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+/*
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+ *
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+ * Clock initialization for OMAP4
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+ *
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+ * (C) Copyright 2010
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+ * Texas Instruments, <www.ti.com>
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+ *
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+ * Aneesh V <aneesh@ti.com>
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+ *
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+ * Based on previous work by:
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+ * Santosh Shilimkar <santosh.shilimkar@ti.com>
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+ * Rajendra Nayak <rnayak@ti.com>
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+ *
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+ * See file CREDITS for list of people who contributed to this
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+ * project.
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License as
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+ * published by the Free Software Foundation; either version 2 of
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+ * the License, or (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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+ * MA 02111-1307 USA
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+ */
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+#include <common.h>
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+#include <asm/omap_common.h>
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+#include <asm/arch/clocks.h>
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+#include <asm/arch/sys_proto.h>
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+#include <asm/utils.h>
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+#include <asm/omap_gpio.h>
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+
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+#ifndef CONFIG_SPL_BUILD
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+/*
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+ * printing to console doesn't work unless
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+ * this code is executed from SPL
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+ */
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+#define printf(fmt, args...)
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+#define puts(s)
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+#endif
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+
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+#define abs(x) (((x) < 0) ? ((x)*-1) : (x))
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+
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+struct omap4_prcm_regs *const prcm = (struct omap4_prcm_regs *)0x4A004100;
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+
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+static const u32 sys_clk_array[8] = {
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+ 12000000, /* 12 MHz */
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+ 13000000, /* 13 MHz */
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+ 16800000, /* 16.8 MHz */
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+ 19200000, /* 19.2 MHz */
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+ 26000000, /* 26 MHz */
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+ 27000000, /* 27 MHz */
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+ 38400000, /* 38.4 MHz */
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+};
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+
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+/*
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+ * The M & N values in the following tables are created using the
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+ * following tool:
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+ * tools/omap/clocks_get_m_n.c
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+ * Please use this tool for creating the table for any new frequency.
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+ */
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+
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+/* dpll locked at 1840 MHz MPU clk at 920 MHz(OPP Turbo 4460) - DCC OFF */
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+static const struct dpll_params mpu_dpll_params_1840mhz[NUM_SYS_CLKS] = {
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+ {230, 2, 1, -1, -1, -1, -1, -1}, /* 12 MHz */
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+ {920, 12, 1, -1, -1, -1, -1, -1}, /* 13 MHz */
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+ {219, 3, 1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
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+ {575, 11, 1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
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+ {460, 12, 1, -1, -1, -1, -1, -1}, /* 26 MHz */
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+ {920, 26, 1, -1, -1, -1, -1, -1}, /* 27 MHz */
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+ {575, 23, 1, -1, -1, -1, -1, -1} /* 38.4 MHz */
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+};
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+
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+/* dpll locked at 1584 MHz - MPU clk at 792 MHz(OPP Turbo 4430) */
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+static const struct dpll_params mpu_dpll_params_1584mhz[NUM_SYS_CLKS] = {
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+ {66, 0, 1, -1, -1, -1, -1, -1}, /* 12 MHz */
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+ {792, 12, 1, -1, -1, -1, -1, -1}, /* 13 MHz */
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+ {330, 6, 1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
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+ {165, 3, 1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
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+ {396, 12, 1, -1, -1, -1, -1, -1}, /* 26 MHz */
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+ {88, 2, 1, -1, -1, -1, -1, -1}, /* 27 MHz */
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+ {165, 7, 1, -1, -1, -1, -1, -1} /* 38.4 MHz */
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+};
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+
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+/* dpll locked at 1200 MHz - MPU clk at 600 MHz */
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+static const struct dpll_params mpu_dpll_params_1200mhz[NUM_SYS_CLKS] = {
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+ {50, 0, 1, -1, -1, -1, -1, -1}, /* 12 MHz */
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+ {600, 12, 1, -1, -1, -1, -1, -1}, /* 13 MHz */
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+ {250, 6, 1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
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+ {125, 3, 1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
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+ {300, 12, 1, -1, -1, -1, -1, -1}, /* 26 MHz */
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+ {200, 8, 1, -1, -1, -1, -1, -1}, /* 27 MHz */
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+ {125, 7, 1, -1, -1, -1, -1, -1} /* 38.4 MHz */
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+};
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+
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+static const struct dpll_params core_dpll_params_1600mhz[NUM_SYS_CLKS] = {
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+ {200, 2, 1, 5, 8, 4, 6, 5}, /* 12 MHz */
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+ {800, 12, 1, 5, 8, 4, 6, 5}, /* 13 MHz */
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+ {619, 12, 1, 5, 8, 4, 6, 5}, /* 16.8 MHz */
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+ {125, 2, 1, 5, 8, 4, 6, 5}, /* 19.2 MHz */
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+ {400, 12, 1, 5, 8, 4, 6, 5}, /* 26 MHz */
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+ {800, 26, 1, 5, 8, 4, 6, 5}, /* 27 MHz */
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+ {125, 5, 1, 5, 8, 4, 6, 5} /* 38.4 MHz */
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+};
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+
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+static const struct dpll_params core_dpll_params_es1_1524mhz[NUM_SYS_CLKS] = {
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+ {127, 1, 1, 5, 8, 4, 6, 5}, /* 12 MHz */
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+ {762, 12, 1, 5, 8, 4, 6, 5}, /* 13 MHz */
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+ {635, 13, 1, 5, 8, 4, 6, 5}, /* 16.8 MHz */
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+ {635, 15, 1, 5, 8, 4, 6, 5}, /* 19.2 MHz */
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+ {381, 12, 1, 5, 8, 4, 6, 5}, /* 26 MHz */
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+ {254, 8, 1, 5, 8, 4, 6, 5}, /* 27 MHz */
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+ {496, 24, 1, 5, 8, 4, 6, 5} /* 38.4 MHz */
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+};
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+
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+static const struct dpll_params
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+ core_dpll_params_es2_1600mhz_ddr200mhz[NUM_SYS_CLKS] = {
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+ {200, 2, 2, 5, 8, 4, 6, 5}, /* 12 MHz */
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+ {800, 12, 2, 5, 8, 4, 6, 5}, /* 13 MHz */
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+ {619, 12, 2, 5, 8, 4, 6, 5}, /* 16.8 MHz */
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+ {125, 2, 2, 5, 8, 4, 6, 5}, /* 19.2 MHz */
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+ {400, 12, 2, 5, 8, 4, 6, 5}, /* 26 MHz */
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+ {800, 26, 2, 5, 8, 4, 6, 5}, /* 27 MHz */
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+ {125, 5, 2, 5, 8, 4, 6, 5} /* 38.4 MHz */
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+};
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+
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+static const struct dpll_params per_dpll_params_1536mhz[NUM_SYS_CLKS] = {
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+ {64, 0, 8, 6, 12, 9, 4, 5}, /* 12 MHz */
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+ {768, 12, 8, 6, 12, 9, 4, 5}, /* 13 MHz */
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+ {320, 6, 8, 6, 12, 9, 4, 5}, /* 16.8 MHz */
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+ {40, 0, 8, 6, 12, 9, 4, 5}, /* 19.2 MHz */
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+ {384, 12, 8, 6, 12, 9, 4, 5}, /* 26 MHz */
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+ {256, 8, 8, 6, 12, 9, 4, 5}, /* 27 MHz */
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+ {20, 0, 8, 6, 12, 9, 4, 5} /* 38.4 MHz */
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+};
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+
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+static const struct dpll_params iva_dpll_params_1862mhz[NUM_SYS_CLKS] = {
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+ {931, 11, -1, -1, 4, 7, -1, -1}, /* 12 MHz */
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+ {931, 12, -1, -1, 4, 7, -1, -1}, /* 13 MHz */
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+ {665, 11, -1, -1, 4, 7, -1, -1}, /* 16.8 MHz */
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+ {727, 14, -1, -1, 4, 7, -1, -1}, /* 19.2 MHz */
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+ {931, 25, -1, -1, 4, 7, -1, -1}, /* 26 MHz */
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+ {931, 26, -1, -1, 4, 7, -1, -1}, /* 27 MHz */
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+ {412, 16, -1, -1, 4, 7, -1, -1} /* 38.4 MHz */
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+};
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+
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+/* ABE M & N values with sys_clk as source */
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+static const struct dpll_params
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+ abe_dpll_params_sysclk_196608khz[NUM_SYS_CLKS] = {
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+ {49, 5, 1, 1, -1, -1, -1, -1}, /* 12 MHz */
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+ {68, 8, 1, 1, -1, -1, -1, -1}, /* 13 MHz */
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+ {35, 5, 1, 1, -1, -1, -1, -1}, /* 16.8 MHz */
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+ {46, 8, 1, 1, -1, -1, -1, -1}, /* 19.2 MHz */
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+ {34, 8, 1, 1, -1, -1, -1, -1}, /* 26 MHz */
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+ {29, 7, 1, 1, -1, -1, -1, -1}, /* 27 MHz */
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+ {64, 24, 1, 1, -1, -1, -1, -1} /* 38.4 MHz */
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+};
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+
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+/* ABE M & N values with 32K clock as source */
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+static const struct dpll_params abe_dpll_params_32k_196608khz = {
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+ 750, 0, 1, 1, -1, -1, -1, -1
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+};
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+
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+
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+static const struct dpll_params usb_dpll_params_1920mhz[NUM_SYS_CLKS] = {
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+ {80, 0, 2, -1, -1, -1, -1, -1}, /* 12 MHz */
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+ {960, 12, 2, -1, -1, -1, -1, -1}, /* 13 MHz */
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+ {400, 6, 2, -1, -1, -1, -1, -1}, /* 16.8 MHz */
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+ {50, 0, 2, -1, -1, -1, -1, -1}, /* 19.2 MHz */
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+ {480, 12, 2, -1, -1, -1, -1, -1}, /* 26 MHz */
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+ {320, 8, 2, -1, -1, -1, -1, -1}, /* 27 MHz */
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+ {25, 0, 2, -1, -1, -1, -1, -1} /* 38.4 MHz */
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+};
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+
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+static inline u32 __get_sys_clk_index(void)
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+{
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+ u32 ind;
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+ /*
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+ * For ES1 the ROM code calibration of sys clock is not reliable
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+ * due to hw issue. So, use hard-coded value. If this value is not
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+ * correct for any board over-ride this function in board file
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+ * From ES2.0 onwards you will get this information from
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+ * CM_SYS_CLKSEL
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+ */
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+ if (omap_revision() == OMAP4430_ES1_0)
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+ ind = OMAP_SYS_CLK_IND_38_4_MHZ;
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+ else {
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+ /* SYS_CLKSEL - 1 to match the dpll param array indices */
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+ ind = (readl(&prcm->cm_sys_clksel) &
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+ CM_SYS_CLKSEL_SYS_CLKSEL_MASK) - 1;
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+ }
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+ return ind;
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+}
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+
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+u32 get_sys_clk_index(void)
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+ __attribute__ ((weak, alias("__get_sys_clk_index")));
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+
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+u32 get_sys_clk_freq(void)
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+{
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+ u8 index = get_sys_clk_index();
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+ return sys_clk_array[index];
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+}
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+
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+static inline void do_bypass_dpll(u32 *const base)
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+{
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+ struct dpll_regs *dpll_regs = (struct dpll_regs *)base;
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+
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+ clrsetbits_le32(&dpll_regs->cm_clkmode_dpll,
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+ CM_CLKMODE_DPLL_DPLL_EN_MASK,
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+ DPLL_EN_FAST_RELOCK_BYPASS <<
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+ CM_CLKMODE_DPLL_EN_SHIFT);
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+}
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+
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+static inline void wait_for_bypass(u32 *const base)
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+{
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+ struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
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+
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+ if (!wait_on_value(ST_DPLL_CLK_MASK, 0, &dpll_regs->cm_idlest_dpll,
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+ LDELAY)) {
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+ printf("Bypassing DPLL failed %p\n", base);
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+ }
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+}
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+
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+static inline void do_lock_dpll(u32 *const base)
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+{
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+ struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
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+
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+ clrsetbits_le32(&dpll_regs->cm_clkmode_dpll,
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+ CM_CLKMODE_DPLL_DPLL_EN_MASK,
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+ DPLL_EN_LOCK << CM_CLKMODE_DPLL_EN_SHIFT);
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+}
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+
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+static inline void wait_for_lock(u32 *const base)
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+{
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+ struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
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+
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+ if (!wait_on_value(ST_DPLL_CLK_MASK, ST_DPLL_CLK_MASK,
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+ &dpll_regs->cm_idlest_dpll, LDELAY)) {
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+ printf("DPLL locking failed for %p\n", base);
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+ hang();
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+ }
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+}
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+
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+static void do_setup_dpll(u32 *const base, const struct dpll_params *params,
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+ u8 lock)
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+{
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+ u32 temp;
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+ struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
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+
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+ bypass_dpll(base);
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+
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+ /* Set M & N */
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+ temp = readl(&dpll_regs->cm_clksel_dpll);
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+
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+ temp &= ~CM_CLKSEL_DPLL_M_MASK;
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+ temp |= (params->m << CM_CLKSEL_DPLL_M_SHIFT) & CM_CLKSEL_DPLL_M_MASK;
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+
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+ temp &= ~CM_CLKSEL_DPLL_N_MASK;
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+ temp |= (params->n << CM_CLKSEL_DPLL_N_SHIFT) & CM_CLKSEL_DPLL_N_MASK;
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+
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+ writel(temp, &dpll_regs->cm_clksel_dpll);
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+
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+ /* Lock */
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+ if (lock)
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+ do_lock_dpll(base);
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+
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+ /* Setup post-dividers */
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+ if (params->m2 >= 0)
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+ writel(params->m2, &dpll_regs->cm_div_m2_dpll);
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+ if (params->m3 >= 0)
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+ writel(params->m3, &dpll_regs->cm_div_m3_dpll);
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+ if (params->m4 >= 0)
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+ writel(params->m4, &dpll_regs->cm_div_m4_dpll);
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+ if (params->m5 >= 0)
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+ writel(params->m5, &dpll_regs->cm_div_m5_dpll);
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+ if (params->m6 >= 0)
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+ writel(params->m6, &dpll_regs->cm_div_m6_dpll);
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+ if (params->m7 >= 0)
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+ writel(params->m7, &dpll_regs->cm_div_m7_dpll);
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+
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+ /* Wait till the DPLL locks */
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+ if (lock)
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+ wait_for_lock(base);
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+}
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+
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+const struct dpll_params *get_core_dpll_params(void)
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+{
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+ u32 sysclk_ind = get_sys_clk_index();
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+
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+ switch (omap_revision()) {
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+ case OMAP4430_ES1_0:
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+ return &core_dpll_params_es1_1524mhz[sysclk_ind];
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+ case OMAP4430_ES2_0:
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+ case OMAP4430_SILICON_ID_INVALID:
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+ /* safest */
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+ return &core_dpll_params_es2_1600mhz_ddr200mhz[sysclk_ind];
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+ default:
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+ return &core_dpll_params_1600mhz[sysclk_ind];
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+ }
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+}
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+
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+u32 omap4_ddr_clk(void)
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+{
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+ u32 ddr_clk, sys_clk_khz;
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+ const struct dpll_params *core_dpll_params;
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+
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+ sys_clk_khz = get_sys_clk_freq() / 1000;
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+
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+ core_dpll_params = get_core_dpll_params();
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+
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+ debug("sys_clk %d\n ", sys_clk_khz * 1000);
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+
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+ /* Find Core DPLL locked frequency first */
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+ ddr_clk = sys_clk_khz * 2 * core_dpll_params->m /
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+ (core_dpll_params->n + 1);
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+ /*
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+ * DDR frequency is PHY_ROOT_CLK/2
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+ * PHY_ROOT_CLK = Fdpll/2/M2
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+ */
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+ ddr_clk = ddr_clk / 4 / core_dpll_params->m2;
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+
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+ ddr_clk *= 1000; /* convert to Hz */
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+ debug("ddr_clk %d\n ", ddr_clk);
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+
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+ return ddr_clk;
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+}
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+
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+/*
|
|
|
+ * Lock MPU dpll
|
|
|
+ *
|
|
|
+ * Resulting MPU frequencies:
|
|
|
+ * 4430 ES1.0 : 600 MHz
|
|
|
+ * 4430 ES2.x : 792 MHz (OPP Turbo)
|
|
|
+ * 4460 : 920 MHz (OPP Turbo) - DCC disabled
|
|
|
+ */
|
|
|
+void configure_mpu_dpll(void)
|
|
|
+{
|
|
|
+ const struct dpll_params *params;
|
|
|
+ struct dpll_regs *mpu_dpll_regs;
|
|
|
+ u32 omap4_rev, sysclk_ind;
|
|
|
+
|
|
|
+ omap4_rev = omap_revision();
|
|
|
+ sysclk_ind = get_sys_clk_index();
|
|
|
+
|
|
|
+ if (omap4_rev == OMAP4430_ES1_0)
|
|
|
+ params = &mpu_dpll_params_1200mhz[sysclk_ind];
|
|
|
+ else if (omap4_rev < OMAP4460_ES1_0)
|
|
|
+ params = &mpu_dpll_params_1584mhz[sysclk_ind];
|
|
|
+ else
|
|
|
+ params = &mpu_dpll_params_1840mhz[sysclk_ind];
|
|
|
+
|
|
|
+ /* DCC and clock divider settings for 4460 */
|
|
|
+ if (omap4_rev >= OMAP4460_ES1_0) {
|
|
|
+ mpu_dpll_regs =
|
|
|
+ (struct dpll_regs *)&prcm->cm_clkmode_dpll_mpu;
|
|
|
+ bypass_dpll(&prcm->cm_clkmode_dpll_mpu);
|
|
|
+ clrbits_le32(&prcm->cm_mpu_mpu_clkctrl,
|
|
|
+ MPU_CLKCTRL_CLKSEL_EMIF_DIV_MODE_MASK);
|
|
|
+ setbits_le32(&prcm->cm_mpu_mpu_clkctrl,
|
|
|
+ MPU_CLKCTRL_CLKSEL_ABE_DIV_MODE_MASK);
|
|
|
+ clrbits_le32(&mpu_dpll_regs->cm_clksel_dpll,
|
|
|
+ CM_CLKSEL_DCC_EN_MASK);
|
|
|
+ }
|
|
|
+
|
|
|
+ do_setup_dpll(&prcm->cm_clkmode_dpll_mpu, params, DPLL_LOCK);
|
|
|
+ debug("MPU DPLL locked\n");
|
|
|
+}
|
|
|
+
|
|
|
+static void setup_dplls(void)
|
|
|
+{
|
|
|
+ u32 sysclk_ind, temp;
|
|
|
+ const struct dpll_params *params;
|
|
|
+ debug("setup_dplls\n");
|
|
|
+
|
|
|
+ sysclk_ind = get_sys_clk_index();
|
|
|
+
|
|
|
+ /* CORE dpll */
|
|
|
+ params = get_core_dpll_params(); /* default - safest */
|
|
|
+ /*
|
|
|
+ * Do not lock the core DPLL now. Just set it up.
|
|
|
+ * Core DPLL will be locked after setting up EMIF
|
|
|
+ * using the FREQ_UPDATE method(freq_update_core())
|
|
|
+ */
|
|
|
+ do_setup_dpll(&prcm->cm_clkmode_dpll_core, params, DPLL_NO_LOCK);
|
|
|
+ /* Set the ratios for CORE_CLK, L3_CLK, L4_CLK */
|
|
|
+ temp = (CLKSEL_CORE_X2_DIV_1 << CLKSEL_CORE_SHIFT) |
|
|
|
+ (CLKSEL_L3_CORE_DIV_2 << CLKSEL_L3_SHIFT) |
|
|
|
+ (CLKSEL_L4_L3_DIV_2 << CLKSEL_L4_SHIFT);
|
|
|
+ writel(temp, &prcm->cm_clksel_core);
|
|
|
+ debug("Core DPLL configured\n");
|
|
|
+
|
|
|
+ /* lock PER dpll */
|
|
|
+ do_setup_dpll(&prcm->cm_clkmode_dpll_per,
|
|
|
+ &per_dpll_params_1536mhz[sysclk_ind], DPLL_LOCK);
|
|
|
+ debug("PER DPLL locked\n");
|
|
|
+
|
|
|
+ /* MPU dpll */
|
|
|
+ configure_mpu_dpll();
|
|
|
+}
|
|
|
+
|
|
|
+static void setup_non_essential_dplls(void)
|
|
|
+{
|
|
|
+ u32 sys_clk_khz, abe_ref_clk;
|
|
|
+ u32 sysclk_ind, sd_div, num, den;
|
|
|
+ const struct dpll_params *params;
|
|
|
+
|
|
|
+ sysclk_ind = get_sys_clk_index();
|
|
|
+ sys_clk_khz = get_sys_clk_freq() / 1000;
|
|
|
+
|
|
|
+ /* IVA */
|
|
|
+ clrsetbits_le32(&prcm->cm_bypclk_dpll_iva,
|
|
|
+ CM_BYPCLK_DPLL_IVA_CLKSEL_MASK, DPLL_IVA_CLKSEL_CORE_X2_DIV_2);
|
|
|
+
|
|
|
+ do_setup_dpll(&prcm->cm_clkmode_dpll_iva,
|
|
|
+ &iva_dpll_params_1862mhz[sysclk_ind], DPLL_LOCK);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * USB:
|
|
|
+ * USB dpll is J-type. Need to set DPLL_SD_DIV for jitter correction
|
|
|
+ * DPLL_SD_DIV = CEILING ([DPLL_MULT/(DPLL_DIV+1)]* CLKINP / 250)
|
|
|
+ * - where CLKINP is sys_clk in MHz
|
|
|
+ * Use CLKINP in KHz and adjust the denominator accordingly so
|
|
|
+ * that we have enough accuracy and at the same time no overflow
|
|
|
+ */
|
|
|
+ params = &usb_dpll_params_1920mhz[sysclk_ind];
|
|
|
+ num = params->m * sys_clk_khz;
|
|
|
+ den = (params->n + 1) * 250 * 1000;
|
|
|
+ num += den - 1;
|
|
|
+ sd_div = num / den;
|
|
|
+ clrsetbits_le32(&prcm->cm_clksel_dpll_usb,
|
|
|
+ CM_CLKSEL_DPLL_DPLL_SD_DIV_MASK,
|
|
|
+ sd_div << CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT);
|
|
|
+
|
|
|
+ /* Now setup the dpll with the regular function */
|
|
|
+ do_setup_dpll(&prcm->cm_clkmode_dpll_usb, params, DPLL_LOCK);
|
|
|
+
|
|
|
+#ifdef CONFIG_SYS_OMAP4_ABE_SYSCK
|
|
|
+ params = &abe_dpll_params_sysclk_196608khz[sysclk_ind];
|
|
|
+ abe_ref_clk = CM_ABE_PLL_REF_CLKSEL_CLKSEL_SYSCLK;
|
|
|
+#else
|
|
|
+ params = &abe_dpll_params_32k_196608khz;
|
|
|
+ abe_ref_clk = CM_ABE_PLL_REF_CLKSEL_CLKSEL_32KCLK;
|
|
|
+ /*
|
|
|
+ * We need to enable some additional options to achieve
|
|
|
+ * 196.608MHz from 32768 Hz
|
|
|
+ */
|
|
|
+ setbits_le32(&prcm->cm_clkmode_dpll_abe,
|
|
|
+ CM_CLKMODE_DPLL_DRIFTGUARD_EN_MASK|
|
|
|
+ CM_CLKMODE_DPLL_RELOCK_RAMP_EN_MASK|
|
|
|
+ CM_CLKMODE_DPLL_LPMODE_EN_MASK|
|
|
|
+ CM_CLKMODE_DPLL_REGM4XEN_MASK);
|
|
|
+ /* Spend 4 REFCLK cycles at each stage */
|
|
|
+ clrsetbits_le32(&prcm->cm_clkmode_dpll_abe,
|
|
|
+ CM_CLKMODE_DPLL_RAMP_RATE_MASK,
|
|
|
+ 1 << CM_CLKMODE_DPLL_RAMP_RATE_SHIFT);
|
|
|
+#endif
|
|
|
+
|
|
|
+ /* Select the right reference clk */
|
|
|
+ clrsetbits_le32(&prcm->cm_abe_pll_ref_clksel,
|
|
|
+ CM_ABE_PLL_REF_CLKSEL_CLKSEL_MASK,
|
|
|
+ abe_ref_clk << CM_ABE_PLL_REF_CLKSEL_CLKSEL_SHIFT);
|
|
|
+ /* Lock the dpll */
|
|
|
+ do_setup_dpll(&prcm->cm_clkmode_dpll_abe, params, DPLL_LOCK);
|
|
|
+}
|
|
|
+
|
|
|
+static void do_scale_tps62361(u32 reg, u32 volt_mv)
|
|
|
+{
|
|
|
+ u32 temp, step;
|
|
|
+
|
|
|
+ step = volt_mv - TPS62361_BASE_VOLT_MV;
|
|
|
+ step /= 10;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Select SET1 in TPS62361:
|
|
|
+ * VSEL1 is grounded on board. So the following selects
|
|
|
+ * VSEL1 = 0 and VSEL0 = 1
|
|
|
+ */
|
|
|
+ omap_set_gpio_direction(TPS62361_VSEL0_GPIO, 0);
|
|
|
+ omap_set_gpio_dataout(TPS62361_VSEL0_GPIO, 1);
|
|
|
+
|
|
|
+ temp = TPS62361_I2C_SLAVE_ADDR |
|
|
|
+ (reg << PRM_VC_VAL_BYPASS_REGADDR_SHIFT) |
|
|
|
+ (step << PRM_VC_VAL_BYPASS_DATA_SHIFT) |
|
|
|
+ PRM_VC_VAL_BYPASS_VALID_BIT;
|
|
|
+ debug("do_scale_tps62361: volt - %d step - 0x%x\n", volt_mv, step);
|
|
|
+
|
|
|
+ writel(temp, &prcm->prm_vc_val_bypass);
|
|
|
+ if (!wait_on_value(PRM_VC_VAL_BYPASS_VALID_BIT, 0,
|
|
|
+ &prcm->prm_vc_val_bypass, LDELAY)) {
|
|
|
+ puts("Scaling voltage failed for vdd_mpu from TPS\n");
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static void do_scale_vcore(u32 vcore_reg, u32 volt_mv)
|
|
|
+{
|
|
|
+ u32 temp, offset_code;
|
|
|
+ u32 step = 12660; /* 12.66 mV represented in uV */
|
|
|
+ u32 offset = volt_mv;
|
|
|
+
|
|
|
+ /* convert to uV for better accuracy in the calculations */
|
|
|
+ offset *= 1000;
|
|
|
+
|
|
|
+ if (omap_revision() == OMAP4430_ES1_0)
|
|
|
+ offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_UV;
|
|
|
+ else
|
|
|
+ offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_WITH_OFFSET_UV;
|
|
|
+
|
|
|
+ offset_code = (offset + step - 1) / step;
|
|
|
+ /* The code starts at 1 not 0 */
|
|
|
+ offset_code++;
|
|
|
+
|
|
|
+ debug("do_scale_vcore: volt - %d offset_code - 0x%x\n", volt_mv,
|
|
|
+ offset_code);
|
|
|
+
|
|
|
+ temp = SMPS_I2C_SLAVE_ADDR |
|
|
|
+ (vcore_reg << PRM_VC_VAL_BYPASS_REGADDR_SHIFT) |
|
|
|
+ (offset_code << PRM_VC_VAL_BYPASS_DATA_SHIFT) |
|
|
|
+ PRM_VC_VAL_BYPASS_VALID_BIT;
|
|
|
+ writel(temp, &prcm->prm_vc_val_bypass);
|
|
|
+ if (!wait_on_value(PRM_VC_VAL_BYPASS_VALID_BIT, 0,
|
|
|
+ &prcm->prm_vc_val_bypass, LDELAY)) {
|
|
|
+ printf("Scaling voltage failed for 0x%x\n", vcore_reg);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * Setup the voltages for vdd_mpu, vdd_core, and vdd_iva
|
|
|
+ * We set the maximum voltages allowed here because Smart-Reflex is not
|
|
|
+ * enabled in bootloader. Voltage initialization in the kernel will set
|
|
|
+ * these to the nominal values after enabling Smart-Reflex
|
|
|
+ */
|
|
|
+static void scale_vcores(void)
|
|
|
+{
|
|
|
+ u32 volt, sys_clk_khz, cycles_hi, cycles_low, temp, omap4_rev;
|
|
|
+
|
|
|
+ sys_clk_khz = get_sys_clk_freq() / 1000;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Setup the dedicated I2C controller for Voltage Control
|
|
|
+ * I2C clk - high period 40% low period 60%
|
|
|
+ */
|
|
|
+ cycles_hi = sys_clk_khz * 4 / PRM_VC_I2C_CHANNEL_FREQ_KHZ / 10;
|
|
|
+ cycles_low = sys_clk_khz * 6 / PRM_VC_I2C_CHANNEL_FREQ_KHZ / 10;
|
|
|
+ /* values to be set in register - less by 5 & 7 respectively */
|
|
|
+ cycles_hi -= 5;
|
|
|
+ cycles_low -= 7;
|
|
|
+ temp = (cycles_hi << PRM_VC_CFG_I2C_CLK_SCLH_SHIFT) |
|
|
|
+ (cycles_low << PRM_VC_CFG_I2C_CLK_SCLL_SHIFT);
|
|
|
+ writel(temp, &prcm->prm_vc_cfg_i2c_clk);
|
|
|
+
|
|
|
+ /* Disable high speed mode and all advanced features */
|
|
|
+ writel(0x0, &prcm->prm_vc_cfg_i2c_mode);
|
|
|
+
|
|
|
+ omap4_rev = omap_revision();
|
|
|
+ /* TPS - supplies vdd_mpu on 4460 */
|
|
|
+ if (omap4_rev >= OMAP4460_ES1_0) {
|
|
|
+ volt = 1430;
|
|
|
+ do_scale_tps62361(TPS62361_REG_ADDR_SET1, volt);
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * VCORE 1
|
|
|
+ *
|
|
|
+ * 4430 : supplies vdd_mpu
|
|
|
+ * Setting a high voltage for Nitro mode as smart reflex is not enabled.
|
|
|
+ * We use the maximum possible value in the AVS range because the next
|
|
|
+ * higher voltage in the discrete range (code >= 0b111010) is way too
|
|
|
+ * high
|
|
|
+ *
|
|
|
+ * 4460 : supplies vdd_core
|
|
|
+ */
|
|
|
+ if (omap4_rev < OMAP4460_ES1_0) {
|
|
|
+ volt = 1417;
|
|
|
+ do_scale_vcore(SMPS_REG_ADDR_VCORE1, volt);
|
|
|
+ } else {
|
|
|
+ volt = 1200;
|
|
|
+ do_scale_vcore(SMPS_REG_ADDR_VCORE1, volt);
|
|
|
+ }
|
|
|
+
|
|
|
+ /* VCORE 2 - supplies vdd_iva */
|
|
|
+ volt = 1200;
|
|
|
+ do_scale_vcore(SMPS_REG_ADDR_VCORE2, volt);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * VCORE 3
|
|
|
+ * 4430 : supplies vdd_core
|
|
|
+ * 4460 : not connected
|
|
|
+ */
|
|
|
+ if (omap4_rev < OMAP4460_ES1_0) {
|
|
|
+ volt = 1200;
|
|
|
+ do_scale_vcore(SMPS_REG_ADDR_VCORE3, volt);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static inline void enable_clock_domain(u32 *const clkctrl_reg, u32 enable_mode)
|
|
|
+{
|
|
|
+ clrsetbits_le32(clkctrl_reg, CD_CLKCTRL_CLKTRCTRL_MASK,
|
|
|
+ enable_mode << CD_CLKCTRL_CLKTRCTRL_SHIFT);
|
|
|
+ debug("Enable clock domain - 0x%08x\n", clkctrl_reg);
|
|
|
+}
|
|
|
+
|
|
|
+static inline void wait_for_clk_enable(u32 *clkctrl_addr)
|
|
|
+{
|
|
|
+ u32 clkctrl, idlest = MODULE_CLKCTRL_IDLEST_DISABLED;
|
|
|
+ u32 bound = LDELAY;
|
|
|
+
|
|
|
+ while ((idlest == MODULE_CLKCTRL_IDLEST_DISABLED) ||
|
|
|
+ (idlest == MODULE_CLKCTRL_IDLEST_TRANSITIONING)) {
|
|
|
+
|
|
|
+ clkctrl = readl(clkctrl_addr);
|
|
|
+ idlest = (clkctrl & MODULE_CLKCTRL_IDLEST_MASK) >>
|
|
|
+ MODULE_CLKCTRL_IDLEST_SHIFT;
|
|
|
+ if (--bound == 0) {
|
|
|
+ printf("Clock enable failed for 0x%p idlest 0x%x\n",
|
|
|
+ clkctrl_addr, clkctrl);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static inline void enable_clock_module(u32 *const clkctrl_addr, u32 enable_mode,
|
|
|
+ u32 wait_for_enable)
|
|
|
+{
|
|
|
+ clrsetbits_le32(clkctrl_addr, MODULE_CLKCTRL_MODULEMODE_MASK,
|
|
|
+ enable_mode << MODULE_CLKCTRL_MODULEMODE_SHIFT);
|
|
|
+ debug("Enable clock module - 0x%08x\n", clkctrl_addr);
|
|
|
+ if (wait_for_enable)
|
|
|
+ wait_for_clk_enable(clkctrl_addr);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * Enable essential clock domains, modules and
|
|
|
+ * do some additional special settings needed
|
|
|
+ */
|
|
|
+static void enable_basic_clocks(void)
|
|
|
+{
|
|
|
+ u32 i, max = 100, wait_for_enable = 1;
|
|
|
+ u32 *const clk_domains_essential[] = {
|
|
|
+ &prcm->cm_l4per_clkstctrl,
|
|
|
+ &prcm->cm_l3init_clkstctrl,
|
|
|
+ &prcm->cm_memif_clkstctrl,
|
|
|
+ &prcm->cm_l4cfg_clkstctrl,
|
|
|
+ 0
|
|
|
+ };
|
|
|
+
|
|
|
+ u32 *const clk_modules_hw_auto_essential[] = {
|
|
|
+ &prcm->cm_wkup_gpio1_clkctrl,
|
|
|
+ &prcm->cm_l4per_gpio2_clkctrl,
|
|
|
+ &prcm->cm_l4per_gpio3_clkctrl,
|
|
|
+ &prcm->cm_l4per_gpio4_clkctrl,
|
|
|
+ &prcm->cm_l4per_gpio5_clkctrl,
|
|
|
+ &prcm->cm_l4per_gpio6_clkctrl,
|
|
|
+ &prcm->cm_memif_emif_1_clkctrl,
|
|
|
+ &prcm->cm_memif_emif_2_clkctrl,
|
|
|
+ &prcm->cm_l3init_hsusbotg_clkctrl,
|
|
|
+ &prcm->cm_l3init_usbphy_clkctrl,
|
|
|
+ &prcm->cm_l4cfg_l4_cfg_clkctrl,
|
|
|
+ 0
|
|
|
+ };
|
|
|
+
|
|
|
+ u32 *const clk_modules_explicit_en_essential[] = {
|
|
|
+ &prcm->cm_l4per_gptimer2_clkctrl,
|
|
|
+ &prcm->cm_l3init_hsmmc1_clkctrl,
|
|
|
+ &prcm->cm_l3init_hsmmc2_clkctrl,
|
|
|
+ &prcm->cm_l4per_mcspi1_clkctrl,
|
|
|
+ &prcm->cm_wkup_gptimer1_clkctrl,
|
|
|
+ &prcm->cm_l4per_i2c1_clkctrl,
|
|
|
+ &prcm->cm_l4per_i2c2_clkctrl,
|
|
|
+ &prcm->cm_l4per_i2c3_clkctrl,
|
|
|
+ &prcm->cm_l4per_i2c4_clkctrl,
|
|
|
+ &prcm->cm_wkup_wdtimer2_clkctrl,
|
|
|
+ &prcm->cm_l4per_uart3_clkctrl,
|
|
|
+ 0
|
|
|
+ };
|
|
|
+
|
|
|
+ /* Enable optional additional functional clock for GPIO4 */
|
|
|
+ setbits_le32(&prcm->cm_l4per_gpio4_clkctrl,
|
|
|
+ GPIO4_CLKCTRL_OPTFCLKEN_MASK);
|
|
|
+
|
|
|
+ /* Enable 96 MHz clock for MMC1 & MMC2 */
|
|
|
+ setbits_le32(&prcm->cm_l3init_hsmmc1_clkctrl,
|
|
|
+ HSMMC_CLKCTRL_CLKSEL_MASK);
|
|
|
+ setbits_le32(&prcm->cm_l3init_hsmmc2_clkctrl,
|
|
|
+ HSMMC_CLKCTRL_CLKSEL_MASK);
|
|
|
+
|
|
|
+ /* Select 32KHz clock as the source of GPTIMER1 */
|
|
|
+ setbits_le32(&prcm->cm_wkup_gptimer1_clkctrl,
|
|
|
+ GPTIMER1_CLKCTRL_CLKSEL_MASK);
|
|
|
+
|
|
|
+ /* Enable optional 48M functional clock for USB PHY */
|
|
|
+ setbits_le32(&prcm->cm_l3init_usbphy_clkctrl,
|
|
|
+ USBPHY_CLKCTRL_OPTFCLKEN_PHY_48M_MASK);
|
|
|
+
|
|
|
+ /* Put the clock domains in SW_WKUP mode */
|
|
|
+ for (i = 0; (i < max) && clk_domains_essential[i]; i++) {
|
|
|
+ enable_clock_domain(clk_domains_essential[i],
|
|
|
+ CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Clock modules that need to be put in HW_AUTO */
|
|
|
+ for (i = 0; (i < max) && clk_modules_hw_auto_essential[i]; i++) {
|
|
|
+ enable_clock_module(clk_modules_hw_auto_essential[i],
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_HW_AUTO,
|
|
|
+ wait_for_enable);
|
|
|
+ };
|
|
|
+
|
|
|
+ /* Clock modules that need to be put in SW_EXPLICIT_EN mode */
|
|
|
+ for (i = 0; (i < max) && clk_modules_explicit_en_essential[i]; i++) {
|
|
|
+ enable_clock_module(clk_modules_explicit_en_essential[i],
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN,
|
|
|
+ wait_for_enable);
|
|
|
+ };
|
|
|
+
|
|
|
+ /* Put the clock domains in HW_AUTO mode now */
|
|
|
+ for (i = 0; (i < max) && clk_domains_essential[i]; i++) {
|
|
|
+ enable_clock_domain(clk_domains_essential[i],
|
|
|
+ CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * Enable non-essential clock domains, modules and
|
|
|
+ * do some additional special settings needed
|
|
|
+ */
|
|
|
+static void enable_non_essential_clocks(void)
|
|
|
+{
|
|
|
+ u32 i, max = 100, wait_for_enable = 0;
|
|
|
+ u32 *const clk_domains_non_essential[] = {
|
|
|
+ &prcm->cm_mpu_m3_clkstctrl,
|
|
|
+ &prcm->cm_ivahd_clkstctrl,
|
|
|
+ &prcm->cm_dsp_clkstctrl,
|
|
|
+ &prcm->cm_dss_clkstctrl,
|
|
|
+ &prcm->cm_sgx_clkstctrl,
|
|
|
+ &prcm->cm1_abe_clkstctrl,
|
|
|
+ &prcm->cm_c2c_clkstctrl,
|
|
|
+ &prcm->cm_cam_clkstctrl,
|
|
|
+ &prcm->cm_dss_clkstctrl,
|
|
|
+ &prcm->cm_sdma_clkstctrl,
|
|
|
+ 0
|
|
|
+ };
|
|
|
+
|
|
|
+ u32 *const clk_modules_hw_auto_non_essential[] = {
|
|
|
+ &prcm->cm_mpu_m3_mpu_m3_clkctrl,
|
|
|
+ &prcm->cm_ivahd_ivahd_clkctrl,
|
|
|
+ &prcm->cm_ivahd_sl2_clkctrl,
|
|
|
+ &prcm->cm_dsp_dsp_clkctrl,
|
|
|
+ &prcm->cm_l3_2_gpmc_clkctrl,
|
|
|
+ &prcm->cm_l3instr_l3_3_clkctrl,
|
|
|
+ &prcm->cm_l3instr_l3_instr_clkctrl,
|
|
|
+ &prcm->cm_l3instr_intrconn_wp1_clkctrl,
|
|
|
+ &prcm->cm_l3init_hsi_clkctrl,
|
|
|
+ &prcm->cm_l3init_hsusbtll_clkctrl,
|
|
|
+ 0
|
|
|
+ };
|
|
|
+
|
|
|
+ u32 *const clk_modules_explicit_en_non_essential[] = {
|
|
|
+ &prcm->cm1_abe_aess_clkctrl,
|
|
|
+ &prcm->cm1_abe_pdm_clkctrl,
|
|
|
+ &prcm->cm1_abe_dmic_clkctrl,
|
|
|
+ &prcm->cm1_abe_mcasp_clkctrl,
|
|
|
+ &prcm->cm1_abe_mcbsp1_clkctrl,
|
|
|
+ &prcm->cm1_abe_mcbsp2_clkctrl,
|
|
|
+ &prcm->cm1_abe_mcbsp3_clkctrl,
|
|
|
+ &prcm->cm1_abe_slimbus_clkctrl,
|
|
|
+ &prcm->cm1_abe_timer5_clkctrl,
|
|
|
+ &prcm->cm1_abe_timer6_clkctrl,
|
|
|
+ &prcm->cm1_abe_timer7_clkctrl,
|
|
|
+ &prcm->cm1_abe_timer8_clkctrl,
|
|
|
+ &prcm->cm1_abe_wdt3_clkctrl,
|
|
|
+ &prcm->cm_l4per_gptimer9_clkctrl,
|
|
|
+ &prcm->cm_l4per_gptimer10_clkctrl,
|
|
|
+ &prcm->cm_l4per_gptimer11_clkctrl,
|
|
|
+ &prcm->cm_l4per_gptimer3_clkctrl,
|
|
|
+ &prcm->cm_l4per_gptimer4_clkctrl,
|
|
|
+ &prcm->cm_l4per_hdq1w_clkctrl,
|
|
|
+ &prcm->cm_l4per_mcbsp4_clkctrl,
|
|
|
+ &prcm->cm_l4per_mcspi2_clkctrl,
|
|
|
+ &prcm->cm_l4per_mcspi3_clkctrl,
|
|
|
+ &prcm->cm_l4per_mcspi4_clkctrl,
|
|
|
+ &prcm->cm_l4per_mmcsd3_clkctrl,
|
|
|
+ &prcm->cm_l4per_mmcsd4_clkctrl,
|
|
|
+ &prcm->cm_l4per_mmcsd5_clkctrl,
|
|
|
+ &prcm->cm_l4per_uart1_clkctrl,
|
|
|
+ &prcm->cm_l4per_uart2_clkctrl,
|
|
|
+ &prcm->cm_l4per_uart4_clkctrl,
|
|
|
+ &prcm->cm_wkup_keyboard_clkctrl,
|
|
|
+ &prcm->cm_wkup_wdtimer2_clkctrl,
|
|
|
+ &prcm->cm_cam_iss_clkctrl,
|
|
|
+ &prcm->cm_cam_fdif_clkctrl,
|
|
|
+ &prcm->cm_dss_dss_clkctrl,
|
|
|
+ &prcm->cm_sgx_sgx_clkctrl,
|
|
|
+ &prcm->cm_l3init_hsusbhost_clkctrl,
|
|
|
+ &prcm->cm_l3init_fsusb_clkctrl,
|
|
|
+ 0
|
|
|
+ };
|
|
|
+
|
|
|
+ /* Enable optional functional clock for ISS */
|
|
|
+ setbits_le32(&prcm->cm_cam_iss_clkctrl, ISS_CLKCTRL_OPTFCLKEN_MASK);
|
|
|
+
|
|
|
+ /* Enable all optional functional clocks of DSS */
|
|
|
+ setbits_le32(&prcm->cm_dss_dss_clkctrl, DSS_CLKCTRL_OPTFCLKEN_MASK);
|
|
|
+
|
|
|
+
|
|
|
+ /* Put the clock domains in SW_WKUP mode */
|
|
|
+ for (i = 0; (i < max) && clk_domains_non_essential[i]; i++) {
|
|
|
+ enable_clock_domain(clk_domains_non_essential[i],
|
|
|
+ CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Clock modules that need to be put in HW_AUTO */
|
|
|
+ for (i = 0; (i < max) && clk_modules_hw_auto_non_essential[i]; i++) {
|
|
|
+ enable_clock_module(clk_modules_hw_auto_non_essential[i],
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_HW_AUTO,
|
|
|
+ wait_for_enable);
|
|
|
+ };
|
|
|
+
|
|
|
+ /* Clock modules that need to be put in SW_EXPLICIT_EN mode */
|
|
|
+ for (i = 0; (i < max) && clk_modules_explicit_en_non_essential[i];
|
|
|
+ i++) {
|
|
|
+ enable_clock_module(clk_modules_explicit_en_non_essential[i],
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN,
|
|
|
+ wait_for_enable);
|
|
|
+ };
|
|
|
+
|
|
|
+ /* Put the clock domains in HW_AUTO mode now */
|
|
|
+ for (i = 0; (i < max) && clk_domains_non_essential[i]; i++) {
|
|
|
+ enable_clock_domain(clk_domains_non_essential[i],
|
|
|
+ CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Put camera module in no sleep mode */
|
|
|
+ clrsetbits_le32(&prcm->cm_cam_clkstctrl, MODULE_CLKCTRL_MODULEMODE_MASK,
|
|
|
+ CD_CLKCTRL_CLKTRCTRL_NO_SLEEP <<
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void freq_update_core(void)
|
|
|
+{
|
|
|
+ u32 freq_config1 = 0;
|
|
|
+ const struct dpll_params *core_dpll_params;
|
|
|
+
|
|
|
+ core_dpll_params = get_core_dpll_params();
|
|
|
+ /* Put EMIF clock domain in sw wakeup mode */
|
|
|
+ enable_clock_domain(&prcm->cm_memif_clkstctrl,
|
|
|
+ CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
|
|
|
+ wait_for_clk_enable(&prcm->cm_memif_emif_1_clkctrl);
|
|
|
+ wait_for_clk_enable(&prcm->cm_memif_emif_2_clkctrl);
|
|
|
+
|
|
|
+ freq_config1 = SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK |
|
|
|
+ SHADOW_FREQ_CONFIG1_DLL_RESET_MASK;
|
|
|
+
|
|
|
+ freq_config1 |= (DPLL_EN_LOCK << SHADOW_FREQ_CONFIG1_DPLL_EN_SHIFT) &
|
|
|
+ SHADOW_FREQ_CONFIG1_DPLL_EN_MASK;
|
|
|
+
|
|
|
+ freq_config1 |= (core_dpll_params->m2 <<
|
|
|
+ SHADOW_FREQ_CONFIG1_M2_DIV_SHIFT) &
|
|
|
+ SHADOW_FREQ_CONFIG1_M2_DIV_MASK;
|
|
|
+
|
|
|
+ writel(freq_config1, &prcm->cm_shadow_freq_config1);
|
|
|
+ if (!wait_on_value(SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK, 0,
|
|
|
+ &prcm->cm_shadow_freq_config1, LDELAY)) {
|
|
|
+ puts("FREQ UPDATE procedure failed!!");
|
|
|
+ hang();
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Put EMIF clock domain back in hw auto mode */
|
|
|
+ enable_clock_domain(&prcm->cm_memif_clkstctrl,
|
|
|
+ CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
|
|
|
+ wait_for_clk_enable(&prcm->cm_memif_emif_1_clkctrl);
|
|
|
+ wait_for_clk_enable(&prcm->cm_memif_emif_2_clkctrl);
|
|
|
+}
|
|
|
+
|
|
|
+void bypass_dpll(u32 *const base)
|
|
|
+{
|
|
|
+ do_bypass_dpll(base);
|
|
|
+ wait_for_bypass(base);
|
|
|
+}
|
|
|
+
|
|
|
+void lock_dpll(u32 *const base)
|
|
|
+{
|
|
|
+ do_lock_dpll(base);
|
|
|
+ wait_for_lock(base);
|
|
|
+}
|
|
|
+
|
|
|
+void setup_clocks_for_console(void)
|
|
|
+{
|
|
|
+ /* Do not add any spl_debug prints in this function */
|
|
|
+ clrsetbits_le32(&prcm->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
|
|
|
+ CD_CLKCTRL_CLKTRCTRL_SW_WKUP <<
|
|
|
+ CD_CLKCTRL_CLKTRCTRL_SHIFT);
|
|
|
+
|
|
|
+ /* Enable all UARTs - console will be on one of them */
|
|
|
+ clrsetbits_le32(&prcm->cm_l4per_uart1_clkctrl,
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_MASK,
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
|
|
|
+
|
|
|
+ clrsetbits_le32(&prcm->cm_l4per_uart2_clkctrl,
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_MASK,
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
|
|
|
+
|
|
|
+ clrsetbits_le32(&prcm->cm_l4per_uart3_clkctrl,
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_MASK,
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
|
|
|
+
|
|
|
+ clrsetbits_le32(&prcm->cm_l4per_uart3_clkctrl,
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_MASK,
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
|
|
|
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
|
|
|
+
|
|
|
+ clrsetbits_le32(&prcm->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
|
|
|
+ CD_CLKCTRL_CLKTRCTRL_HW_AUTO <<
|
|
|
+ CD_CLKCTRL_CLKTRCTRL_SHIFT);
|
|
|
+}
|
|
|
+
|
|
|
+void prcm_init(void)
|
|
|
+{
|
|
|
+ switch (omap4_hw_init_context()) {
|
|
|
+ case OMAP_INIT_CONTEXT_SPL:
|
|
|
+ case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
|
|
|
+ case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
|
|
|
+ enable_basic_clocks();
|
|
|
+ scale_vcores();
|
|
|
+ setup_dplls();
|
|
|
+ setup_non_essential_dplls();
|
|
|
+ enable_non_essential_clocks();
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ break;
|
|
|
+ }
|
|
|
+}
|