From 6f8c85e8d1865730c158d9ef5a06c70c3a10600a Mon Sep 17 00:00:00 2001
From: Dave Liu <r63238@freescale.com>
Date: Wed, 26 Mar 2008 22:56:36 +0800
Subject: [PATCH] mpc83xx: initialize serdes for MPC837xEMDS boards

This patch is stolen from Anton Vorontsov's patch
for mpc837xerdb boards.

The reference clk and xcorevdd voltage of serdes1/2
is same between mpc837xemds and mpc837xerdb.

8377E: LYNX1- 2 SATA	LYNX2- 2 PCIE
8378E: LYNX1- 2 SGMII	LYNX2- 2 PCIE
8379E: LYNX1- 2 SATA	LYNX2- 2 SATA

Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
---
 board/freescale/mpc837xemds/mpc837xemds.c | 33 +++++++++++++++++++++++
 include/configs/MPC837XEMDS.h             |  5 ++++
 2 files changed, 38 insertions(+)

diff --git a/board/freescale/mpc837xemds/mpc837xemds.c b/board/freescale/mpc837xemds/mpc837xemds.c
index e57a53fde3..6fbd0e0c31 100644
--- a/board/freescale/mpc837xemds/mpc837xemds.c
+++ b/board/freescale/mpc837xemds/mpc837xemds.c
@@ -12,6 +12,8 @@
 
 #include <common.h>
 #include <i2c.h>
+#include <asm/io.h>
+#include <asm/fsl_serdes.h>
 #include <spd_sdram.h>
 #if defined(CONFIG_OF_LIBFDT)
 #include <libfdt.h>
@@ -29,6 +31,37 @@ int board_early_init_f(void)
 	/* Clear all of the interrupt of BCSR */
 	bcsr[0xe] = 0xff;
 
+#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;
 }
 
diff --git a/include/configs/MPC837XEMDS.h b/include/configs/MPC837XEMDS.h
index b307bf71ef..4006026d6d 100644
--- a/include/configs/MPC837XEMDS.h
+++ b/include/configs/MPC837XEMDS.h
@@ -389,6 +389,11 @@
 /* Options are: TSEC[0-1] */
 #define CONFIG_ETHPRIME		"eTSEC1"
 
+/* SERDES */
+#define CONFIG_FSL_SERDES
+#define CONFIG_FSL_SERDES1	0xe3000
+#define CONFIG_FSL_SERDES2	0xe3100
+
 /*
  * Environment
  */
-- 
2.39.5