ARM: MXS: fix Uninitialized variable error

[u-boot] / 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 3baf4ddefcfbf8ddd0f7215f43448cddabc8fb38..97ef67d8c5843b06fcd6c7d903cd3d4cb21d976b 100644 (file)
--- a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
@@ -240,9 +240,14 @@ 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)
@@ -269,7 +274,13 @@ 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);