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From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 6/8] ARM: am33xx: beaglebone: split out DDR2 init for BB White
Date: Thu, 22 Aug 2013 22:36:57 +0200	[thread overview]
Message-ID: <1377203819-23074-7-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1377203819-23074-1-git-send-email-s.hauer@pengutronix.de>

From: Jan Luebbe <jlu@pengutronix.de>

To make place for the DDR3 init for the BB black.

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/boards/beaglebone/Makefile   |   2 +-
 arch/arm/boards/beaglebone/ddr.h      |   1 +
 arch/arm/boards/beaglebone/ddr2.c     | 178 ++++++++++++++++++++++++++++++++++
 arch/arm/boards/beaglebone/lowlevel.c | 175 +--------------------------------
 4 files changed, 184 insertions(+), 172 deletions(-)
 create mode 100644 arch/arm/boards/beaglebone/ddr.h
 create mode 100644 arch/arm/boards/beaglebone/ddr2.c

diff --git a/arch/arm/boards/beaglebone/Makefile b/arch/arm/boards/beaglebone/Makefile
index 092c31d..7ec0c8b 100644
--- a/arch/arm/boards/beaglebone/Makefile
+++ b/arch/arm/boards/beaglebone/Makefile
@@ -1,2 +1,2 @@
-lwl-y += lowlevel.o
+lwl-y += lowlevel.o ddr2.o
 obj-y += board.o
diff --git a/arch/arm/boards/beaglebone/ddr.h b/arch/arm/boards/beaglebone/ddr.h
new file mode 100644
index 0000000..d2f0c95
--- /dev/null
+++ b/arch/arm/boards/beaglebone/ddr.h
@@ -0,0 +1 @@
+void beaglebone_config_ddr2(void);
diff --git a/arch/arm/boards/beaglebone/ddr2.c b/arch/arm/boards/beaglebone/ddr2.c
new file mode 100644
index 0000000..42a099d
--- /dev/null
+++ b/arch/arm/boards/beaglebone/ddr2.c
@@ -0,0 +1,178 @@
+#include <init.h>
+#include <sizes.h>
+#include <io.h>
+#include <asm/armlinux.h>
+#include <asm/barebox-arm-head.h>
+#include <asm/barebox-arm.h>
+#include <mach/am33xx-silicon.h>
+#include <mach/am33xx-clock.h>
+
+/* AM335X EMIF Register values */
+#define EMIF_SDMGT		0x80000000
+#define EMIF_SDRAM		0x00004650
+#define EMIF_PHYCFG		0x2
+#define DDR_PHY_RESET		(0x1 << 10)
+#define DDR_FUNCTIONAL_MODE_EN	0x1
+#define DDR_PHY_READY		(0x1 << 2)
+#define	VTP_CTRL_READY		(0x1 << 5)
+#define VTP_CTRL_ENABLE		(0x1 << 6)
+#define VTP_CTRL_LOCK_EN	(0x1 << 4)
+#define VTP_CTRL_START_EN	(0x1)
+#define DDR2_RATIO		0x80	/* for mDDR */
+#define CMD_FORCE		0x00	/* common #def */
+#define CMD_DELAY		0x00
+
+#define EMIF_READ_LATENCY	0x05
+#define EMIF_TIM1		0x0666B3D6
+#define EMIF_TIM2		0x143731DA
+#define	EMIF_TIM3		0x00000347
+#define EMIF_SDCFG		0x43805332
+#define EMIF_SDREF		0x0000081a
+#define DDR2_DLL_LOCK_DIFF	0x0
+#define DDR2_RD_DQS		0x12
+#define DDR2_PHY_FIFO_WE	0x80
+
+#define	DDR2_INVERT_CLKOUT	0x00
+#define	DDR2_WR_DQS		0x00
+#define	DDR2_PHY_WRLVL		0x00
+#define	DDR2_PHY_GATELVL	0x00
+#define	DDR2_PHY_WR_DATA	0x40
+#define	PHY_RANK0_DELAY		0x01
+#define PHY_DLL_LOCK_DIFF	0x0
+#define DDR_IOCTRL_VALUE	0x18B
+
+static void beaglebone_data_macro_config_ddr2(int dataMacroNum)
+{
+	u32 BaseAddrOffset = 0x00;
+
+	if (dataMacroNum == 1)
+		BaseAddrOffset = 0xA4;
+
+	__raw_writel(((DDR2_RD_DQS<<30)|(DDR2_RD_DQS<<20)
+		|(DDR2_RD_DQS<<10)|(DDR2_RD_DQS<<0)),
+		(AM33XX_DATA0_RD_DQS_SLAVE_RATIO_0 + BaseAddrOffset));
+	__raw_writel(DDR2_RD_DQS>>2,
+		(AM33XX_DATA0_RD_DQS_SLAVE_RATIO_1 + BaseAddrOffset));
+	__raw_writel(((DDR2_WR_DQS<<30)|(DDR2_WR_DQS<<20)
+		|(DDR2_WR_DQS<<10)|(DDR2_WR_DQS<<0)),
+		(AM33XX_DATA0_WR_DQS_SLAVE_RATIO_0 + BaseAddrOffset));
+	__raw_writel(DDR2_WR_DQS>>2,
+		(AM33XX_DATA0_WR_DQS_SLAVE_RATIO_1 + BaseAddrOffset));
+	__raw_writel(((DDR2_PHY_WRLVL<<30)|(DDR2_PHY_WRLVL<<20)
+		|(DDR2_PHY_WRLVL<<10)|(DDR2_PHY_WRLVL<<0)),
+		(AM33XX_DATA0_WRLVL_INIT_RATIO_0 + BaseAddrOffset));
+	__raw_writel(DDR2_PHY_WRLVL>>2,
+		(AM33XX_DATA0_WRLVL_INIT_RATIO_1 + BaseAddrOffset));
+	__raw_writel(((DDR2_PHY_GATELVL<<30)|(DDR2_PHY_GATELVL<<20)
+		|(DDR2_PHY_GATELVL<<10)|(DDR2_PHY_GATELVL<<0)),
+		(AM33XX_DATA0_GATELVL_INIT_RATIO_0 + BaseAddrOffset));
+	__raw_writel(DDR2_PHY_GATELVL>>2,
+		(AM33XX_DATA0_GATELVL_INIT_RATIO_1 + BaseAddrOffset));
+	__raw_writel(((DDR2_PHY_FIFO_WE<<30)|(DDR2_PHY_FIFO_WE<<20)
+		|(DDR2_PHY_FIFO_WE<<10)|(DDR2_PHY_FIFO_WE<<0)),
+		(AM33XX_DATA0_FIFO_WE_SLAVE_RATIO_0 + BaseAddrOffset));
+	__raw_writel(DDR2_PHY_FIFO_WE>>2,
+		(AM33XX_DATA0_FIFO_WE_SLAVE_RATIO_1 + BaseAddrOffset));
+	__raw_writel(((DDR2_PHY_WR_DATA<<30)|(DDR2_PHY_WR_DATA<<20)
+		|(DDR2_PHY_WR_DATA<<10)|(DDR2_PHY_WR_DATA<<0)),
+		(AM33XX_DATA0_WR_DATA_SLAVE_RATIO_0 + BaseAddrOffset));
+	__raw_writel(DDR2_PHY_WR_DATA>>2,
+		(AM33XX_DATA0_WR_DATA_SLAVE_RATIO_1 + BaseAddrOffset));
+	__raw_writel(PHY_DLL_LOCK_DIFF,
+		(AM33XX_DATA0_DLL_LOCK_DIFF_0 + BaseAddrOffset));
+}
+
+static void beaglebone_cmd_macro_config_ddr2(void)
+{
+	__raw_writel(DDR2_RATIO, AM33XX_CMD0_CTRL_SLAVE_RATIO_0);
+	__raw_writel(CMD_FORCE, AM33XX_CMD0_CTRL_SLAVE_FORCE_0);
+	__raw_writel(CMD_DELAY, AM33XX_CMD0_CTRL_SLAVE_DELAY_0);
+	__raw_writel(DDR2_DLL_LOCK_DIFF, AM33XX_CMD0_DLL_LOCK_DIFF_0);
+	__raw_writel(DDR2_INVERT_CLKOUT, AM33XX_CMD0_INVERT_CLKOUT_0);
+
+	__raw_writel(DDR2_RATIO, AM33XX_CMD1_CTRL_SLAVE_RATIO_0);
+	__raw_writel(CMD_FORCE, AM33XX_CMD1_CTRL_SLAVE_FORCE_0);
+	__raw_writel(CMD_DELAY, AM33XX_CMD1_CTRL_SLAVE_DELAY_0);
+	__raw_writel(DDR2_DLL_LOCK_DIFF, AM33XX_CMD1_DLL_LOCK_DIFF_0);
+	__raw_writel(DDR2_INVERT_CLKOUT, AM33XX_CMD1_INVERT_CLKOUT_0);
+
+	__raw_writel(DDR2_RATIO, AM33XX_CMD2_CTRL_SLAVE_RATIO_0);
+	__raw_writel(CMD_FORCE, AM33XX_CMD2_CTRL_SLAVE_FORCE_0);
+	__raw_writel(CMD_DELAY, AM33XX_CMD2_CTRL_SLAVE_DELAY_0);
+	__raw_writel(DDR2_DLL_LOCK_DIFF, AM33XX_CMD2_DLL_LOCK_DIFF_0);
+	__raw_writel(DDR2_INVERT_CLKOUT, AM33XX_CMD2_INVERT_CLKOUT_0);
+}
+
+static void beaglebone_config_vtp_ddr2(void)
+{
+	__raw_writel(__raw_readl(AM33XX_VTP0_CTRL_REG) | VTP_CTRL_ENABLE,
+		AM33XX_VTP0_CTRL_REG);
+	__raw_writel(__raw_readl(AM33XX_VTP0_CTRL_REG) & (~VTP_CTRL_START_EN),
+		AM33XX_VTP0_CTRL_REG);
+	__raw_writel(__raw_readl(AM33XX_VTP0_CTRL_REG) | VTP_CTRL_START_EN,
+		AM33XX_VTP0_CTRL_REG);
+
+	/* Poll for READY */
+	while ((__raw_readl(AM33XX_VTP0_CTRL_REG) & VTP_CTRL_READY) != VTP_CTRL_READY);
+}
+
+static void beaglebone_config_emif_ddr2(void)
+{
+	u32 i;
+
+	/*Program EMIF0 CFG Registers*/
+	__raw_writel(EMIF_READ_LATENCY, AM33XX_EMIF4_0_REG(DDR_PHY_CTRL_1));
+	__raw_writel(EMIF_READ_LATENCY, AM33XX_EMIF4_0_REG(DDR_PHY_CTRL_1_SHADOW));
+	__raw_writel(EMIF_READ_LATENCY, AM33XX_EMIF4_0_REG(DDR_PHY_CTRL_2));
+	__raw_writel(EMIF_TIM1, AM33XX_EMIF4_0_REG(SDRAM_TIM_1));
+	__raw_writel(EMIF_TIM1, AM33XX_EMIF4_0_REG(SDRAM_TIM_1_SHADOW));
+	__raw_writel(EMIF_TIM2, AM33XX_EMIF4_0_REG(SDRAM_TIM_2));
+	__raw_writel(EMIF_TIM2, AM33XX_EMIF4_0_REG(SDRAM_TIM_2_SHADOW));
+	__raw_writel(EMIF_TIM3, AM33XX_EMIF4_0_REG(SDRAM_TIM_3));
+	__raw_writel(EMIF_TIM3, AM33XX_EMIF4_0_REG(SDRAM_TIM_3_SHADOW));
+
+	__raw_writel(EMIF_SDCFG, AM33XX_EMIF4_0_REG(SDRAM_CONFIG));
+	__raw_writel(EMIF_SDCFG, AM33XX_EMIF4_0_REG(SDRAM_CONFIG2));
+
+	/* __raw_writel(EMIF_SDMGT, EMIF0_0_SDRAM_MGMT_CTRL);
+	__raw_writel(EMIF_SDMGT, EMIF0_0_SDRAM_MGMT_CTRL_SHD); */
+	__raw_writel(0x00004650, AM33XX_EMIF4_0_REG(SDRAM_REF_CTRL));
+	__raw_writel(0x00004650, AM33XX_EMIF4_0_REG(SDRAM_REF_CTRL_SHADOW));
+
+	for (i = 0; i < 5000; i++) {
+
+	}
+
+	/* __raw_writel(EMIF_SDMGT, EMIF0_0_SDRAM_MGMT_CTRL);
+	__raw_writel(EMIF_SDMGT, EMIF0_0_SDRAM_MGMT_CTRL_SHD); */
+	__raw_writel(EMIF_SDREF, AM33XX_EMIF4_0_REG(SDRAM_REF_CTRL));
+	__raw_writel(EMIF_SDREF, AM33XX_EMIF4_0_REG(SDRAM_REF_CTRL_SHADOW));
+
+	__raw_writel(EMIF_SDCFG, AM33XX_EMIF4_0_REG(SDRAM_CONFIG));
+	__raw_writel(EMIF_SDCFG, AM33XX_EMIF4_0_REG(SDRAM_CONFIG2));
+}
+
+void beaglebone_config_ddr2(void)
+{
+	enable_ddr_clocks();
+
+	beaglebone_config_vtp_ddr2();
+
+	beaglebone_cmd_macro_config_ddr2();
+	beaglebone_data_macro_config_ddr2(0);
+	beaglebone_data_macro_config_ddr2(1);
+
+	__raw_writel(PHY_RANK0_DELAY, AM33XX_DATA0_RANK0_DELAYS_0);
+	__raw_writel(PHY_RANK0_DELAY, AM33XX_DATA1_RANK0_DELAYS_0);
+
+	__raw_writel(DDR_IOCTRL_VALUE, AM33XX_DDR_CMD0_IOCTRL);
+	__raw_writel(DDR_IOCTRL_VALUE, AM33XX_DDR_CMD1_IOCTRL);
+	__raw_writel(DDR_IOCTRL_VALUE, AM33XX_DDR_CMD2_IOCTRL);
+	__raw_writel(DDR_IOCTRL_VALUE, AM33XX_DDR_DATA0_IOCTRL);
+	__raw_writel(DDR_IOCTRL_VALUE, AM33XX_DDR_DATA1_IOCTRL);
+
+	__raw_writel(__raw_readl(AM33XX_DDR_IO_CTRL) & 0xefffffff, AM33XX_DDR_IO_CTRL);
+	__raw_writel(__raw_readl(AM33XX_DDR_CKE_CTRL) | 0x00000001, AM33XX_DDR_CKE_CTRL);
+
+	beaglebone_config_emif_ddr2();
+}
diff --git a/arch/arm/boards/beaglebone/lowlevel.c b/arch/arm/boards/beaglebone/lowlevel.c
index e6c490a..e869a7b 100644
--- a/arch/arm/boards/beaglebone/lowlevel.c
+++ b/arch/arm/boards/beaglebone/lowlevel.c
@@ -13,6 +13,8 @@
 #include <mach/am33xx-generic.h>
 #include <mach/wdt.h>
 
+#include "ddr.h"
+
 /* UART Defines */
 #define UART_SYSCFG_OFFSET  (0x54)
 #define UART_SYSSTS_OFFSET  (0x58)
@@ -21,176 +23,6 @@
 #define UART_CLK_RUNNING_MASK   0x1
 #define UART_SMART_IDLE_EN  (0x1 << 0x3)
 
-/* AM335X EMIF Register values */
-#define EMIF_SDMGT		0x80000000
-#define EMIF_SDRAM		0x00004650
-#define EMIF_PHYCFG		0x2
-#define DDR_PHY_RESET		(0x1 << 10)
-#define DDR_FUNCTIONAL_MODE_EN	0x1
-#define DDR_PHY_READY		(0x1 << 2)
-#define	VTP_CTRL_READY		(0x1 << 5)
-#define VTP_CTRL_ENABLE		(0x1 << 6)
-#define VTP_CTRL_LOCK_EN	(0x1 << 4)
-#define VTP_CTRL_START_EN	(0x1)
-#define DDR2_RATIO		0x80	/* for mDDR */
-#define CMD_FORCE		0x00	/* common #def */
-#define CMD_DELAY		0x00
-
-#define EMIF_READ_LATENCY	0x05
-#define EMIF_TIM1		0x0666B3D6
-#define EMIF_TIM2		0x143731DA
-#define	EMIF_TIM3		0x00000347
-#define EMIF_SDCFG		0x43805332
-#define EMIF_SDREF		0x0000081a
-#define DDR2_DLL_LOCK_DIFF	0x0
-#define DDR2_RD_DQS		0x12
-#define DDR2_PHY_FIFO_WE	0x80
-
-#define	DDR2_INVERT_CLKOUT	0x00
-#define	DDR2_WR_DQS		0x00
-#define	DDR2_PHY_WRLVL		0x00
-#define	DDR2_PHY_GATELVL	0x00
-#define	DDR2_PHY_WR_DATA	0x40
-#define	PHY_RANK0_DELAY		0x01
-#define PHY_DLL_LOCK_DIFF	0x0
-#define DDR_IOCTRL_VALUE	0x18B
-
-static void beaglebone_data_macro_config(int dataMacroNum)
-{
-	u32 BaseAddrOffset = 0x00;
-
-	if (dataMacroNum == 1)
-		BaseAddrOffset = 0xA4;
-
-	__raw_writel(((DDR2_RD_DQS<<30)|(DDR2_RD_DQS<<20)
-		|(DDR2_RD_DQS<<10)|(DDR2_RD_DQS<<0)),
-		(AM33XX_DATA0_RD_DQS_SLAVE_RATIO_0 + BaseAddrOffset));
-	__raw_writel(DDR2_RD_DQS>>2,
-		(AM33XX_DATA0_RD_DQS_SLAVE_RATIO_1 + BaseAddrOffset));
-	__raw_writel(((DDR2_WR_DQS<<30)|(DDR2_WR_DQS<<20)
-		|(DDR2_WR_DQS<<10)|(DDR2_WR_DQS<<0)),
-		(AM33XX_DATA0_WR_DQS_SLAVE_RATIO_0 + BaseAddrOffset));
-	__raw_writel(DDR2_WR_DQS>>2,
-		(AM33XX_DATA0_WR_DQS_SLAVE_RATIO_1 + BaseAddrOffset));
-	__raw_writel(((DDR2_PHY_WRLVL<<30)|(DDR2_PHY_WRLVL<<20)
-		|(DDR2_PHY_WRLVL<<10)|(DDR2_PHY_WRLVL<<0)),
-		(AM33XX_DATA0_WRLVL_INIT_RATIO_0 + BaseAddrOffset));
-	__raw_writel(DDR2_PHY_WRLVL>>2,
-		(AM33XX_DATA0_WRLVL_INIT_RATIO_1 + BaseAddrOffset));
-	__raw_writel(((DDR2_PHY_GATELVL<<30)|(DDR2_PHY_GATELVL<<20)
-		|(DDR2_PHY_GATELVL<<10)|(DDR2_PHY_GATELVL<<0)),
-		(AM33XX_DATA0_GATELVL_INIT_RATIO_0 + BaseAddrOffset));
-	__raw_writel(DDR2_PHY_GATELVL>>2,
-		(AM33XX_DATA0_GATELVL_INIT_RATIO_1 + BaseAddrOffset));
-	__raw_writel(((DDR2_PHY_FIFO_WE<<30)|(DDR2_PHY_FIFO_WE<<20)
-		|(DDR2_PHY_FIFO_WE<<10)|(DDR2_PHY_FIFO_WE<<0)),
-		(AM33XX_DATA0_FIFO_WE_SLAVE_RATIO_0 + BaseAddrOffset));
-	__raw_writel(DDR2_PHY_FIFO_WE>>2,
-		(AM33XX_DATA0_FIFO_WE_SLAVE_RATIO_1 + BaseAddrOffset));
-	__raw_writel(((DDR2_PHY_WR_DATA<<30)|(DDR2_PHY_WR_DATA<<20)
-		|(DDR2_PHY_WR_DATA<<10)|(DDR2_PHY_WR_DATA<<0)),
-		(AM33XX_DATA0_WR_DATA_SLAVE_RATIO_0 + BaseAddrOffset));
-	__raw_writel(DDR2_PHY_WR_DATA>>2,
-		(AM33XX_DATA0_WR_DATA_SLAVE_RATIO_1 + BaseAddrOffset));
-	__raw_writel(PHY_DLL_LOCK_DIFF,
-		(AM33XX_DATA0_DLL_LOCK_DIFF_0 + BaseAddrOffset));
-}
-
-static void beaglebone_cmd_macro_config(void)
-{
-	__raw_writel(DDR2_RATIO, AM33XX_CMD0_CTRL_SLAVE_RATIO_0);
-	__raw_writel(CMD_FORCE, AM33XX_CMD0_CTRL_SLAVE_FORCE_0);
-	__raw_writel(CMD_DELAY, AM33XX_CMD0_CTRL_SLAVE_DELAY_0);
-	__raw_writel(DDR2_DLL_LOCK_DIFF, AM33XX_CMD0_DLL_LOCK_DIFF_0);
-	__raw_writel(DDR2_INVERT_CLKOUT, AM33XX_CMD0_INVERT_CLKOUT_0);
-
-	__raw_writel(DDR2_RATIO, AM33XX_CMD1_CTRL_SLAVE_RATIO_0);
-	__raw_writel(CMD_FORCE, AM33XX_CMD1_CTRL_SLAVE_FORCE_0);
-	__raw_writel(CMD_DELAY, AM33XX_CMD1_CTRL_SLAVE_DELAY_0);
-	__raw_writel(DDR2_DLL_LOCK_DIFF, AM33XX_CMD1_DLL_LOCK_DIFF_0);
-	__raw_writel(DDR2_INVERT_CLKOUT, AM33XX_CMD1_INVERT_CLKOUT_0);
-
-	__raw_writel(DDR2_RATIO, AM33XX_CMD2_CTRL_SLAVE_RATIO_0);
-	__raw_writel(CMD_FORCE, AM33XX_CMD2_CTRL_SLAVE_FORCE_0);
-	__raw_writel(CMD_DELAY, AM33XX_CMD2_CTRL_SLAVE_DELAY_0);
-	__raw_writel(DDR2_DLL_LOCK_DIFF, AM33XX_CMD2_DLL_LOCK_DIFF_0);
-	__raw_writel(DDR2_INVERT_CLKOUT, AM33XX_CMD2_INVERT_CLKOUT_0);
-}
-
-static void beaglebone_config_vtp(void)
-{
-	__raw_writel(__raw_readl(AM33XX_VTP0_CTRL_REG) | VTP_CTRL_ENABLE,
-		AM33XX_VTP0_CTRL_REG);
-	__raw_writel(__raw_readl(AM33XX_VTP0_CTRL_REG) & (~VTP_CTRL_START_EN),
-		AM33XX_VTP0_CTRL_REG);
-	__raw_writel(__raw_readl(AM33XX_VTP0_CTRL_REG) | VTP_CTRL_START_EN,
-		AM33XX_VTP0_CTRL_REG);
-
-	/* Poll for READY */
-	while ((__raw_readl(AM33XX_VTP0_CTRL_REG) & VTP_CTRL_READY) != VTP_CTRL_READY);
-}
-
-static void beaglebone_config_emif_ddr2(void)
-{
-	u32 i;
-
-	/*Program EMIF0 CFG Registers*/
-	__raw_writel(EMIF_READ_LATENCY, AM33XX_EMIF4_0_REG(DDR_PHY_CTRL_1));
-	__raw_writel(EMIF_READ_LATENCY, AM33XX_EMIF4_0_REG(DDR_PHY_CTRL_1_SHADOW));
-	__raw_writel(EMIF_READ_LATENCY, AM33XX_EMIF4_0_REG(DDR_PHY_CTRL_2));
-	__raw_writel(EMIF_TIM1, AM33XX_EMIF4_0_REG(SDRAM_TIM_1));
-	__raw_writel(EMIF_TIM1, AM33XX_EMIF4_0_REG(SDRAM_TIM_1_SHADOW));
-	__raw_writel(EMIF_TIM2, AM33XX_EMIF4_0_REG(SDRAM_TIM_2));
-	__raw_writel(EMIF_TIM2, AM33XX_EMIF4_0_REG(SDRAM_TIM_2_SHADOW));
-	__raw_writel(EMIF_TIM3, AM33XX_EMIF4_0_REG(SDRAM_TIM_3));
-	__raw_writel(EMIF_TIM3, AM33XX_EMIF4_0_REG(SDRAM_TIM_3_SHADOW));
-
-	__raw_writel(EMIF_SDCFG, AM33XX_EMIF4_0_REG(SDRAM_CONFIG));
-	__raw_writel(EMIF_SDCFG, AM33XX_EMIF4_0_REG(SDRAM_CONFIG2));
-
-	/* __raw_writel(EMIF_SDMGT, EMIF0_0_SDRAM_MGMT_CTRL);
-	__raw_writel(EMIF_SDMGT, EMIF0_0_SDRAM_MGMT_CTRL_SHD); */
-	__raw_writel(0x00004650, AM33XX_EMIF4_0_REG(SDRAM_REF_CTRL));
-	__raw_writel(0x00004650, AM33XX_EMIF4_0_REG(SDRAM_REF_CTRL_SHADOW));
-
-	for (i = 0; i < 5000; i++) {
-
-	}
-
-	/* __raw_writel(EMIF_SDMGT, EMIF0_0_SDRAM_MGMT_CTRL);
-	__raw_writel(EMIF_SDMGT, EMIF0_0_SDRAM_MGMT_CTRL_SHD); */
-	__raw_writel(EMIF_SDREF, AM33XX_EMIF4_0_REG(SDRAM_REF_CTRL));
-	__raw_writel(EMIF_SDREF, AM33XX_EMIF4_0_REG(SDRAM_REF_CTRL_SHADOW));
-
-	__raw_writel(EMIF_SDCFG, AM33XX_EMIF4_0_REG(SDRAM_CONFIG));
-	__raw_writel(EMIF_SDCFG, AM33XX_EMIF4_0_REG(SDRAM_CONFIG2));
-}
-
-static void beaglebone_config_ddr(void)
-{
-	enable_ddr_clocks();
-
-	beaglebone_config_vtp();
-
-	beaglebone_cmd_macro_config();
-	beaglebone_data_macro_config(0);
-	beaglebone_data_macro_config(1);
-
-	__raw_writel(PHY_RANK0_DELAY, AM33XX_DATA0_RANK0_DELAYS_0);
-	__raw_writel(PHY_RANK0_DELAY, AM33XX_DATA1_RANK0_DELAYS_0);
-
-	__raw_writel(DDR_IOCTRL_VALUE, AM33XX_DDR_CMD0_IOCTRL);
-	__raw_writel(DDR_IOCTRL_VALUE, AM33XX_DDR_CMD1_IOCTRL);
-	__raw_writel(DDR_IOCTRL_VALUE, AM33XX_DDR_CMD2_IOCTRL);
-	__raw_writel(DDR_IOCTRL_VALUE, AM33XX_DDR_DATA0_IOCTRL);
-	__raw_writel(DDR_IOCTRL_VALUE, AM33XX_DDR_DATA1_IOCTRL);
-
-	__raw_writel(__raw_readl(AM33XX_DDR_IO_CTRL) & 0xefffffff, AM33XX_DDR_IO_CTRL);
-	__raw_writel(__raw_readl(AM33XX_DDR_CKE_CTRL) | 0x00000001, AM33XX_DDR_CKE_CTRL);
-
-	beaglebone_config_emif_ddr2();
-}
-
 /*
  * early system init of muxing and clocks.
  */
@@ -201,7 +33,8 @@ void beaglebone_sram_init(void)
 	/* Setup the PLLs and the clocks for the peripherals */
 	pll_init(MPUPLL_M_500);
 
-	beaglebone_config_ddr();
+	if (get_cpu_rev() == AM335X_ES1_0)
+		beaglebone_config_ddr2();
 
 	/* UART softreset */
 	uart_base = AM33XX_UART0_BASE;
-- 
1.8.4.rc3


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  parent reply	other threads:[~2013-08-22 20:37 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-22 20:36 [PATCH] OMAP fixes and beaglebone black support Sascha Hauer
2013-08-22 20:36 ` [PATCH 1/8] ARM: am33xx: Add SRAM0 address/size defines Sascha Hauer
2013-08-22 20:36 ` [PATCH 2/8] ARM: omap: fix omap_save_bootinfo Sascha Hauer
2013-08-22 20:36 ` [PATCH 3/8] ARM: am33xx: Make uart0 mux init callable during early init Sascha Hauer
2013-08-22 20:36 ` [PATCH 4/8] ARM: cpuinfo: display the core name and version Sascha Hauer
2013-08-22 20:36 ` [PATCH 5/8] ARM: am33xx: implement cpu revision decoding Sascha Hauer
2013-08-22 20:36 ` Sascha Hauer [this message]
2013-08-22 20:36 ` [PATCH 7/8] ARM: am33xx: beaglebone: configure I2C EEPROM Sascha Hauer
2013-08-22 20:36 ` [PATCH 8/8] ARM: am33xx: beaglebone: add support for beaglebone black with DDR3 RAM Sascha Hauer

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