[U-Boot] [PATCH] mxs: Boost the memory power supply
Marek Vasut
marex at denx.de
Mon Jan 21 23:51:50 CET 2013
The memory power supply on MX23 didn't pump out enough juice into
the DRAM chip, thus caused occasional memory corruption. Fix this.
Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Otavio Salvador <otavio at ossystems.com.br>
Cc: Fabio Estevam <fabio.estevam at freescale.com>
Cc: Stefano Babic <sbabic at denx.de>
---
arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c | 4 ++--
board/olimex/mx23_olinuxino/spl_boot.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
index 5944dd2..836e636 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
@@ -230,7 +230,7 @@ static void mx23_mem_setup_vddmem(void)
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
- writel((0x10 << POWER_VDDMEMCTRL_TRG_OFFSET) |
+ writel((0x12 << POWER_VDDMEMCTRL_TRG_OFFSET) |
POWER_VDDMEMCTRL_ENABLE_ILIMIT |
POWER_VDDMEMCTRL_ENABLE_LINREG |
POWER_VDDMEMCTRL_PULLDOWN_ACTIVE,
@@ -238,7 +238,7 @@ static void mx23_mem_setup_vddmem(void)
early_delay(10000);
- writel((0x10 << POWER_VDDMEMCTRL_TRG_OFFSET) |
+ writel((0x12 << POWER_VDDMEMCTRL_TRG_OFFSET) |
POWER_VDDMEMCTRL_ENABLE_LINREG,
&power_regs->hw_power_vddmemctrl);
}
diff --git a/board/olimex/mx23_olinuxino/spl_boot.c b/board/olimex/mx23_olinuxino/spl_boot.c
index 3cc40cd..d42bb14 100644
--- a/board/olimex/mx23_olinuxino/spl_boot.c
+++ b/board/olimex/mx23_olinuxino/spl_boot.c
@@ -29,7 +29,7 @@
#include <asm/arch/imx-regs.h>
#include <asm/arch/sys_proto.h>
-#define MUX_CONFIG_EMI (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL)
+#define MUX_CONFIG_EMI (MXS_PAD_3V3 | MXS_PAD_16MA | MXS_PAD_PULLUP)
#define MUX_CONFIG_SSP (MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP)
const iomux_cfg_t iomux_setup[] = {
--
1.7.10.4
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