am335x evm: Enable support for spi0

Signed-off-by: Tom Rini <trini@ti.com>

board/ti/am335x/mux.c

@@ -310,6 +310,16 @@ static struct module_pin_mux i2c1_pin_mux[] = {
 	{-1},
 };
 
+static struct module_pin_mux spi0_pin_mux[] = {
+	{OFFSET(spi0_sclk), (MODE(0) | RXACTIVE | PULLUDEN)},	/* SPI0_SCLK */
+	{OFFSET(spi0_d0), (MODE(0) | RXACTIVE |
+			PULLUDEN | PULLUP_EN)},			/* SPI0_D0 */
+	{OFFSET(spi0_d1), (MODE(0) | RXACTIVE | PULLUDEN)},	/* SPI0_D1 */
+	{OFFSET(spi0_cs0), (MODE(0) | RXACTIVE |
+			PULLUDEN | PULLUP_EN)},			/* SPI0_CS0 */
+	{-1},
+};
+
 static struct module_pin_mux gpio0_7_pin_mux[] = {
 	{OFFSET(ecap0_in_pwm0_out), (MODE(7) | PULLUDEN)},	/* GPIO0_7 */
 	{-1},
@@ -430,6 +440,7 @@ void enable_board_pin_mux(struct am335x_baseboard_id *header)
 			configure_module_pin_mux(i2c1_pin_mux);
 		else if (profile == PROFILE_2) {
 			configure_module_pin_mux(mmc1_pin_mux);
+			configure_module_pin_mux(spi0_pin_mux);
 		}
 	} else if (!strncmp(header->name, "A335X_SK", HDR_NAME_LEN)) {
 		/* Starter Kit EVM */

drivers/spi/omap3_spi.c

@@ -173,8 +173,18 @@ int spi_claim_bus(struct spi_slave *slave)
 	/* standard 4-wire master mode:	SCK, MOSI/out, MISO/in, nCS
 	 * REVISIT: this controller could support SPI_3WIRE mode.
 	 */
+#ifdef CONFIG_AM33XX
+	/*
+	 * The reference design on AM33xx has D0 and D1 wired up opposite
+	 * of how it has been done on previous platforms.  We assume that
+	 * custom hardware will also follow this convention.
+	 */
+	conf &= OMAP3_MCSPI_CHCONF_DPE0;
+	conf |= ~(OMAP3_MCSPI_CHCONF_IS|OMAP3_MCSPI_CHCONF_DPE1);
+#else
 	conf &= ~(OMAP3_MCSPI_CHCONF_IS|OMAP3_MCSPI_CHCONF_DPE1);
 	conf |= OMAP3_MCSPI_CHCONF_DPE0;
+#endif
 
 	/* wordlength */
 	conf &= ~OMAP3_MCSPI_CHCONF_WL_MASK;

include/configs/am335x_evm.h

@@ -134,6 +134,14 @@
 #define CONFIG_CMD_FAT
 #define CONFIG_CMD_EXT2
 
+#define CONFIG_SPI
+#define CONFIG_OMAP3_SPI
+#define CONFIG_MTD_DEVICE
+#define CONFIG_SPI_FLASH
+#define CONFIG_SPI_FLASH_WINBOND
+#define CONFIG_CMD_SF
+#define CONFIG_SF_DEFAULT_SPEED		(24000000)
+
  /* Physical Memory Map */
 #define CONFIG_NR_DRAM_BANKS		1		/*  1 bank of DRAM */
 #define PHYS_DRAM_1			0x80000000	/* DRAM Bank #1 */
@@ -163,6 +171,7 @@
 #define CONFIG_I2C_MULTI_BUS
 #define CONFIG_DRIVER_OMAP24XX_I2C
 #define CONFIG_CMD_EEPROM
+#define CONFIG_ENV_EEPROM_IS_ON_I2C
 #define CONFIG_SYS_I2C_EEPROM_ADDR	0x50	/* Main EEPROM */
 #define CONFIG_SYS_I2C_EEPROM_ADDR_LEN	2
 #define CONFIG_SYS_I2C_MULTI_EEPROMS