karo: merge with Ka-Ro specific tree for secure boot support

[karo-tx-uboot.git] / arch / arm / cpu / arm926ejs / mxs / spl_mem_init.c

diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
index 44cf84d5a9822d09840c61a0b130720f8ba831f9..d5842e68133e880ba142c65b45512f9912827a54 100644 (file)
--- a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
@@ -241,9 +241,14 @@ static void mx23_mem_setup_vddmem(void)
        struct mxs_power_regs *power_regs =
                (struct mxs_power_regs *)MXS_POWER_BASE;
 
+       /* We must wait before and after disabling the current limiter! */
+       early_delay(10000);
+
        clrbits_le32(&power_regs->hw_power_vddmemctrl,
                POWER_VDDMEMCTRL_ENABLE_ILIMIT);
 
+       early_delay(10000);
+
 }
 
 static void mx23_mem_init(void)
@@ -270,7 +275,13 @@ static void mx23_mem_init(void)
        setbits_le32(MXS_DRAM_BASE + 0x20, 1 << 16);
 
        clrbits_le32(MXS_DRAM_BASE + 0x40, 1 << 17);
-       early_delay(20000);
+
+       /* Wait for EMI_STAT bit DRAM_HALTED */
+       for (;;) {
+               if (!(readl(MXS_EMI_BASE + 0x10) & (1 << 1)))
+                       break;
+               early_delay(1000);
+       }
 
        /* Adjust EMI port priority. */
        clrsetbits_le32(0x80020000, 0x1f << 16, 0x2);