Merge remote-tracking branch 'u-boot/master' into u-boot-arm-merged

[people/ms/u-boot.git] / arch / powerpc / cpu / mpc85xx / ddr-gen2.c

diff --git a/arch/powerpc/cpu/mpc85xx/ddr-gen2.c b/arch/powerpc/cpu/mpc85xx/ddr-gen2.c
index 655f99c028ea70536d109630f2cb03652481e90e..a7058625227bdcaa333731b8c5785b779c0299e2 100644 (file)
--- a/arch/powerpc/cpu/mpc85xx/ddr-gen2.c
+++ b/arch/powerpc/cpu/mpc85xx/ddr-gen2.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2008 Freescale Semiconductor, Inc.
+ * Copyright 2008-2011 Freescale Semiconductor, Inc.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -8,6 +8,7 @@
 
 #include <common.h>
 #include <asm/io.h>
+#include <asm/processor.h>
 #include <asm/fsl_ddr_sdram.h>
 
 #if (CONFIG_CHIP_SELECTS_PER_CTRL > 4)
@@ -18,13 +19,33 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
                             unsigned int ctrl_num)
 {
        unsigned int i;
-       volatile ccsr_ddr_t *ddr = (void *)CONFIG_SYS_MPC85xx_DDR_ADDR;
+       ccsr_ddr_t *ddr = (void *)CONFIG_SYS_MPC8xxx_DDR_ADDR;
+
+#if defined(CONFIG_SYS_FSL_ERRATUM_NMG_DDR120) && defined(CONFIG_MPC85xx)
+       ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+       uint svr;
+#endif
 
        if (ctrl_num) {
                printf("%s unexpected ctrl_num = %u\n", __FUNCTION__, ctrl_num);
                return;
        }
 
+#ifdef CONFIG_SYS_FSL_ERRATUM_NMG_DDR120
+       /*
+        * Set the DDR IO receiver to an acceptable bias point.
+        * Fixed in Rev 2.1.
+        */
+       svr = get_svr();
+       if ((SVR_MAJ(svr) == 1) || IS_SVR_REV(svr, 2, 0)) {
+               if ((regs->ddr_sdram_cfg & SDRAM_CFG_SDRAM_TYPE_MASK) ==
+                  SDRAM_CFG_SDRAM_TYPE_DDR2)
+                       out_be32(&gur->ddrioovcr, 0x90000000);
+               else
+                       out_be32(&gur->ddrioovcr, 0xA8000000);
+       }
+#endif
+
        for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
                if (i == 0) {
                        out_be32(&ddr->cs0_bnds, regs->cs[i].bnds);