83xx: initialize serdes for MPC837XRDB boards

On the MPC8377ERDB: 2 SATA and 2 PCI-E.
On the MPC8378ERDB: 2 PCI-E
On the MPC8379ERDB: 4 SATA

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>

board/freescale/mpc837xerdb/mpc837xerdb.c

@@ -15,6 +15,7 @@
 #include <common.h>
 #include <i2c.h>
 #include <asm/io.h>
+#include <asm/fsl_serdes.h>
 #include <spd_sdram.h>
 #include <vsc7385.h>
 
@@ -132,6 +133,42 @@ int checkboard(void)
 	return 0;
 }
 
+int board_early_init_f(void)
+{
+#ifdef CONFIG_FSL_SERDES
+	immap_t *immr = (immap_t *)CFG_IMMR;
+	u32 spridr = in_be32(&immr->sysconf.spridr);
+
+	/* we check only part num, and don't look for CPU revisions */
+	switch (spridr >> 16) {
+	case SPR_8379E_REV10 >> 16:
+	case SPR_8379_REV10 >> 16:
+		fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_SATA,
+				 FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
+		fsl_setup_serdes(CONFIG_FSL_SERDES2, FSL_SERDES_PROTO_SATA,
+				 FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
+		break;
+	case SPR_8378E_REV10 >> 16:
+	case SPR_8378_REV10 >> 16:
+		fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_PEX,
+				 FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
+		break;
+	case SPR_8377E_REV10 >> 16:
+	case SPR_8377_REV10 >> 16:
+		fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_SATA,
+				 FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
+		fsl_setup_serdes(CONFIG_FSL_SERDES2, FSL_SERDES_PROTO_PEX,
+				 FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
+		break;
+	default:
+		printf("serdes not configured: unknown CPU part number: "
+		       "%04x\n", spridr >> 16);
+		break;
+	}
+#endif /* CONFIG_FSL_SERDES */
+	return 0;
+}
+
 /*
  * Miscellaneous late-boot configurations
  *

include/configs/MPC837XERDB.h

@@ -32,6 +32,7 @@
 
 #define CONFIG_PCI	1
 
+#define CONFIG_BOARD_EARLY_INIT_F
 #define CONFIG_MISC_INIT_R
 
 /*
@@ -323,6 +324,11 @@
 #define CFG_NS16550_COM1	(CFG_IMMR+0x4500)
 #define CFG_NS16550_COM2	(CFG_IMMR+0x4600)
 
+/* SERDES */
+#define CONFIG_FSL_SERDES
+#define CONFIG_FSL_SERDES1	0xe3000
+#define CONFIG_FSL_SERDES2	0xe3100
+
 /* Use the HUSH parser */
 #define CFG_HUSH_PARSER
 #ifdef	CFG_HUSH_PARSER