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| author | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-03-15 15:18:31 +0100 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-03-15 15:18:31 +0100 |
| commit | 6579d15c58e2b6b051f126ea8b77dd767252aa14 (patch) | |
| tree | cac9f9205db8c28a764ad8282d3a909bf95e8db4 /arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c | |
| parent | c44bb3a30f5a1332176edce1a91c0e2cf666ee8f (diff) | |
| parent | 19a0f7fa271de0345bb2df90d443c547c41e8037 (diff) | |
Merge branch 'u-boot-imx/master' into 'u-boot-arm/master'
Diffstat (limited to 'arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c index f8392f6398..fdac73cfaa 100644 --- a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c +++ b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c @@ -27,6 +27,7 @@ #include <config.h> #include <asm/io.h> #include <asm/arch/imx-regs.h> +#include <asm/arch/sys_proto.h> #include <linux/compiler.h> #include "mxs_init.h" @@ -119,6 +120,10 @@ static void initialize_dram_values(void) writel(dram_vals[i], MXS_DRAM_BASE + (4 * i)); #ifdef CONFIG_MX23 + /* + * Enable tRAS lockout in HW_DRAM_CTL08 ; it must be the last + * element to be set + */ writel((1 << 24), MXS_DRAM_BASE + (4 * 8)); #endif } @@ -229,7 +234,7 @@ static void mx23_mem_setup_vddmem(void) struct mxs_power_regs *power_regs = (struct mxs_power_regs *)MXS_POWER_BASE; - writel((0x12 << POWER_VDDMEMCTRL_TRG_OFFSET) | + writel((0x10 << POWER_VDDMEMCTRL_TRG_OFFSET) | POWER_VDDMEMCTRL_ENABLE_ILIMIT | POWER_VDDMEMCTRL_ENABLE_LINREG | POWER_VDDMEMCTRL_PULLDOWN_ACTIVE, @@ -237,13 +242,20 @@ static void mx23_mem_setup_vddmem(void) early_delay(10000); - writel((0x12 << POWER_VDDMEMCTRL_TRG_OFFSET) | + writel((0x10 << POWER_VDDMEMCTRL_TRG_OFFSET) | POWER_VDDMEMCTRL_ENABLE_LINREG, &power_regs->hw_power_vddmemctrl); } static void mx23_mem_init(void) { + /* + * Reset/ungate the EMI block. This is essential, otherwise the system + * suffers from memory instability. This thing is mx23 specific and is + * no longer present on mx28. + */ + mxs_reset_block((struct mxs_register_32 *)MXS_EMI_BASE); + mx23_mem_setup_vddmem(); /* |