Patchwork [U-Boot,11/18] mx23: SPL: Initialize DDR at 133MHz

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Submitter Marek Vasut
Date Jan. 11, 2013, 1:19 p.m.
Message ID <1357910358-22132-11-git-send-email-marex@denx.de>
Download mbox | patch
Permalink /patch/211342/
State Awaiting Upstream
Delegated to: Stefano Babic
Headers show

Comments

Marek Vasut - Jan. 11, 2013, 1:19 p.m.
From: Otavio Salvador <otavio@ossystems.com.br>

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
---
 arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

Patch

diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
index 401c513..9d05f83 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
@@ -83,6 +83,22 @@  static uint32_t dram_vals[] = {
 	0x06120612, 0x04320432, 0x04320432, 0x00040004,
 	0x00040004, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00010001
+
+/*
+ * i.MX23 DDR at 133MHz
+ */
+#elif defined(CONFIG_MX23)
+	0x01010001, 0x00010100, 0x01000101, 0x00000001,
+	0x00000101, 0x00000000, 0x00010000, 0x01000001,
+	0x00000000, 0x00000001, 0x07000200, 0x00070202,
+	0x02020000, 0x04040a01, 0x00000201, 0x02040000,
+	0x02000000, 0x19000f08, 0x0d0d0000, 0x02021313,
+	0x02061521, 0x0000000a, 0x00080008, 0x00200020,
+	0x00200020, 0x00200020, 0x000003f7, 0x00000000,
+	0x00000000, 0x00000020, 0x00000020, 0x00c80000,
+	0x000a23cd, 0x000000c8, 0x00006665, 0x00000000,
+	0x00000101, 0x00040001, 0x00000000, 0x00000000,
+	0x00010000
 #else
 #error Unsupported memory initialization
 #endif
@@ -102,6 +118,10 @@  static void initialize_dram_values(void)
 
 	for (i = 0; i < ARRAY_SIZE(dram_vals); i++)
 		writel(dram_vals[i], MXS_DRAM_BASE + (4 * i));
+
+#ifdef CONFIG_MX23
+	writel((1 << 24), MXS_DRAM_BASE + (4 * 8));
+#endif
 }
 
 static void mxs_mem_init_clock(void)