ARM: OMAP3: SDRC: add timing data for Micron MT46H32M32LF-6, v2

Add timing data for the Micron MT46H32M32LF-6 SDRAM chip, used on the OMAP3 Beagle and EVM boards. Original timing data is from the Micron datasheet PDF downloaded from: http://download.micron.com/pdf/datasheets/dram/mobile/1gb_ddr_mobile_sdram_t48m.pdf Thanks to Rajendra Nayak <rnayak@ti.com> for his help identifying the chips used on Beagle & OMAP3EVM. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
git-mirror · May 28, 2009 · 2e12bd7 · 2e12bd7
1 parent 2aa57be
commit 2e12bd7
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Showing 4 changed files with 62 additions and 3 deletions.
diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -105,6 +105,8 @@ static struct platform_device omap3beagle_nand_device = {
 	.resource	= &omap3beagle_nand_resource,
 };
 
+#include "sdram-micron-mt46h32m32lf-6.h"
+
 static struct omap_uart_config omap3_beagle_uart_config __initdata = {
 	.enabled_uarts	= ((1 << 0) | (1 << 1) | (1 << 2)),
 };
@@ -185,7 +187,7 @@ static int __init omap3_beagle_i2c_init(void)
 
 static void __init omap3_beagle_init_irq(void)
 {
-	omap2_init_common_hw(NULL);
+	omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 	omap_init_irq();
 #ifdef CONFIG_OMAP_32K_TIMER
 	omap2_gp_clockevent_set_gptimer(12);

diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
@@ -36,6 +36,7 @@
 #include <mach/mcspi.h>
 #include <mach/usb.h>
 
+#include "sdram-micron-mt46h32m32lf-6.h"
 #include "mmc-twl4030.h"
 
 #define OMAP3_PANDORA_TS_GPIO		94
@@ -118,7 +119,7 @@ static int __init omap3pandora_i2c_init(void)
 
 static void __init omap3pandora_init_irq(void)
 {
-	omap2_init_common_hw(NULL);
+	omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 	omap_init_irq();
 	omap_gpio_init();
 }

diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
@@ -45,6 +45,7 @@
 #include <mach/nand.h>
 #include <mach/usb.h>
 
+#include "sdram-micron-mt46h32m32lf-6.h"
 #include "mmc-twl4030.h"
 
 #define OVERO_GPIO_BT_XGATE	15
@@ -303,7 +304,7 @@ static int __init overo_i2c_init(void)
 
 static void __init overo_init_irq(void)
 {
-	omap2_init_common_hw(NULL);
+	omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 	omap_init_irq();
 	omap_gpio_init();
 }

diff --git a/arch/arm/mach-omap2/sdram-micron-mt46h32m32lf-6.h b/arch/arm/mach-omap2/sdram-micron-mt46h32m32lf-6.h
@@ -0,0 +1,55 @@
+/*
+ * SDRC register values for the Micron MT46H32M32LF-6
+ *
+ * Copyright (C) 2008 Texas Instruments, Inc.
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Paul Walmsley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef ARCH_ARM_MACH_OMAP2_SDRAM_MICRON_MT46H32M32LF
+#define ARCH_ARM_MACH_OMAP2_SDRAM_MICRON_MT46H32M32LF
+
+#include <mach/sdrc.h>
+
+/* Micron MT46H32M32LF-6 */
+/* XXX Using ARE = 0x1 (no autorefresh burst) -- can this be changed? */
+static struct omap_sdrc_params mt46h32m32lf6_sdrc_params[] = {
+	[0] = {
+		.rate	     = 166000000,
+		.actim_ctrla = 0x9a9db4c6,
+		.actim_ctrlb = 0x00011217,
+		.rfr_ctrl    = 0x0004dc01,
+		.mr	     = 0x00000032,
+	},
+	[1] = {
+		.rate	     = 165941176,
+		.actim_ctrla = 0x9a9db4c6,
+		.actim_ctrlb = 0x00011217,
+		.rfr_ctrl    = 0x0004dc01,
+		.mr	     = 0x00000032,
+	},
+	[2] = {
+		.rate	     = 83000000,
+		.actim_ctrla = 0x51512283,
+		.actim_ctrlb = 0x0001120c,
+		.rfr_ctrl    = 0x00025501,
+		.mr	     = 0x00000032,
+	},
+	[3] = {
+		.rate	     = 82970588,
+		.actim_ctrla = 0x51512283,
+		.actim_ctrlb = 0x0001120c,
+		.rfr_ctrl    = 0x00025501,
+		.mr	     = 0x00000032,
+	},
+	[4] = {
+		.rate	     = 0
+	},
+};
+
+#endif