From: Dave Gerlach <d-gerlach@ti.com>
Date: Tue, 18 Feb 2014 12:32:01 +0000 (-0500)
Subject: ARM: AM43xx: Change DDR3 Reset Value
X-Git-Tag: v2014.04-rc2~1^2~10
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=b56b9a0884afab53f7c93cd3c90648437ca7e35e;p=u-boot

ARM: AM43xx: Change DDR3 Reset Value

The bit DDR3_RST_DEF_VAL inside CTRL_DDR_IO represents the default value
of the ddr reset value for DDR3 before the EMIF takes over. We must have
this bit set high so that on exit from DeepSleep0 within the kernel the
reset line has the proper value.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
---

diff --git a/arch/arm/cpu/armv7/am33xx/emif4.c b/arch/arm/cpu/armv7/am33xx/emif4.c
index d28fceb75c..3e39752380 100644
--- a/arch/arm/cpu/armv7/am33xx/emif4.c
+++ b/arch/arm/cpu/armv7/am33xx/emif4.c
@@ -113,7 +113,7 @@ void config_ddr(unsigned int pll, const struct ctrl_ioregs *ioregs,
 	writel(readl(&cm_device->cm_dll_ctrl) & ~0x1, &cm_device->cm_dll_ctrl);
 	while ((readl(&cm_device->cm_dll_ctrl) && CM_DLL_READYST) == 0)
 		;
-	writel(0x0, &ddrctrl->ddrioctrl);
+	writel(0x80000000, &ddrctrl->ddrioctrl);
 
 	config_io_ctrl(ioregs);