Patchwork [U-Boot,2/2] MX53: loco: Add power init support

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Submitter Jason Liu
Date April 13, 2011, 1:29 p.m.
Message ID <1302701359-10996-3-git-send-email-jason.hui@linaro.org>
Download mbox | patch
Permalink /patch/91011/
State Superseded
Headers show

Comments

Jason Liu - April 13, 2011, 1:29 p.m.
Increase CPU core power to 1.25v via DA9053 PMIC,
and after that CPU can ran to 1GHZ and DDR 400Mhz.

Signed-off-by: Jason Liu <jason.hui@linaro.org>
---
 arch/arm/include/asm/arch-mx5/sys_proto.h |    2 +
 board/freescale/mx53loco/mx53loco.c       |   94 +++++++++++++++++++++++++++++
 include/configs/mx53loco.h                |   13 ++--
 3 files changed, 102 insertions(+), 7 deletions(-)

Patch

diff --git a/arch/arm/include/asm/arch-mx5/sys_proto.h b/arch/arm/include/asm/arch-mx5/sys_proto.h
index 89ab8e8..9fc209d 100644
--- a/arch/arm/include/asm/arch-mx5/sys_proto.h
+++ b/arch/arm/include/asm/arch-mx5/sys_proto.h
@@ -29,5 +29,7 @@  u32 get_cpu_rev(void);
 void sdelay(unsigned long);
 void invalidate_dcache(u32);
 u32 get_device_type(void);
+void pmic_reg_write(u32 reg, u32 value);
+u32 pmic_reg_read(u32 reg);
 
 #endif
diff --git a/board/freescale/mx53loco/mx53loco.c b/board/freescale/mx53loco/mx53loco.c
index fd56c3d..9f15fa4 100755
--- a/board/freescale/mx53loco/mx53loco.c
+++ b/board/freescale/mx53loco/mx53loco.c
@@ -28,12 +28,14 @@ 
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/crm_regs.h>
 #include <asm/arch/iomux.h>
+#include <asm/arch/clock.h>
 #include <asm/errno.h>
 #include <netdev.h>
 #include <i2c.h>
 #include <mmc.h>
 #include <fsl_esdhc.h>
 #include <mxc_gpio.h>
+#include <da9053.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -273,6 +275,93 @@  int board_mmc_init(bd_t *bis)
 }
 #endif
 
+static void setup_i2c(unsigned int port_number)
+{
+	switch (port_number) {
+	case 0:
+		/* i2c1 SDA */
+		mxc_request_iomux(MX53_PIN_CSI0_D8,
+				IOMUX_CONFIG_ALT5 | IOMUX_CONFIG_SION);
+		mxc_iomux_set_input(MX53_I2C1_IPP_SDA_IN_SELECT_INPUT,
+				INPUT_CTL_PATH0);
+		mxc_iomux_set_pad(MX53_PIN_CSI0_D8,
+				PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH |
+				PAD_CTL_100K_PU | PAD_CTL_PKE_ENABLE |
+				PAD_CTL_PUE_PULL |
+				PAD_CTL_ODE_OPENDRAIN_ENABLE);
+		/* i2c1 SCL */
+		mxc_request_iomux(MX53_PIN_CSI0_D9,
+				IOMUX_CONFIG_ALT5 | IOMUX_CONFIG_SION);
+		mxc_iomux_set_input(MX53_I2C1_IPP_SCL_IN_SELECT_INPUT,
+				INPUT_CTL_PATH0);
+		mxc_iomux_set_pad(MX53_PIN_CSI0_D9,
+				PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH |
+				PAD_CTL_100K_PU | PAD_CTL_PKE_ENABLE |
+				PAD_CTL_PUE_PULL |
+				PAD_CTL_ODE_OPENDRAIN_ENABLE);
+		break;
+	case 1:
+		/* i2c2 SDA */
+		mxc_request_iomux(MX53_PIN_KEY_ROW3,
+				IOMUX_CONFIG_ALT4 | IOMUX_CONFIG_SION);
+		mxc_iomux_set_input(MX53_I2C2_IPP_SDA_IN_SELECT_INPUT,
+				INPUT_CTL_PATH0);
+		mxc_iomux_set_pad(MX53_PIN_KEY_ROW3,
+				PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH |
+				PAD_CTL_100K_PU | PAD_CTL_HYS_ENABLE |
+				PAD_CTL_ODE_OPENDRAIN_ENABLE);
+
+		/* i2c2 SCL */
+		mxc_request_iomux(MX53_PIN_KEY_COL3,
+				IOMUX_CONFIG_ALT4 | IOMUX_CONFIG_SION);
+		mxc_iomux_set_input(MX53_I2C2_IPP_SCL_IN_SELECT_INPUT,
+				INPUT_CTL_PATH0);
+		mxc_iomux_set_pad(MX53_PIN_KEY_COL3,
+				PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH |
+				PAD_CTL_100K_PU | PAD_CTL_HYS_ENABLE |
+				PAD_CTL_ODE_OPENDRAIN_ENABLE);
+		break;
+	default:
+		printf("Warning: Wrong I2C port number\n");
+		break;
+	}
+}
+
+static void clock_init(void)
+{
+	int ret;
+	u32 ref_clk = CONFIG_SYS_MX5_HCLK;
+	/*
+	 * After increase voltage to 1.25V, We can switch
+	 * CPU clokc to 1Ghz and DDR to 400Mhz safely now
+	 */
+	ret = mxc_set_clock(ref_clk, 1000, MXC_ARM_CLK);
+	if (!ret)
+		printf("CPU:   Switch CPU clock to 1GHZ OK\n");
+	else
+		printf("CPU:   Switch CPU clock to 1GHZ failed\n");
+
+	ret = mxc_set_clock(ref_clk, 400, MXC_PERIPH_CLK);
+	ret |= mxc_set_clock(ref_clk, 400, MXC_DDR_CLK);
+	if (!ret)
+		printf("DDR:   Switch DDR clock to 400MHz OK\n");
+	else
+		printf("CPU:   Switch DDR clock to 1GHZ failed\n");
+}
+
+static void power_init(void)
+{
+	unsigned int val;
+
+	/* Set VDDA to 1.25V */
+	val = DA9052_BUCKCORE_BCOREEN;
+	val |= DA_BUCKCORE_VBCORE_1_250V;
+	pmic_reg_write(DA9053_BUCKCORE_REG, val);
+	val = pmic_reg_read(DA9053_SUPPLY_REG);
+	val |= DA9052_SUPPLY_VBCOREGO;
+	pmic_reg_write(DA9053_SUPPLY_REG, val);
+}
+
 int board_early_init_f(void)
 {
 	setup_iomux_uart();
@@ -286,6 +375,11 @@  int board_init(void)
 	gd->bd->bi_arch_number = MACH_TYPE_MX53_LOCO;
 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 
+#ifdef CONFIG_I2C_MXC
+	setup_i2c(0);
+	power_init();
+	clock_init();
+#endif
 	return 0;
 }
 
diff --git a/include/configs/mx53loco.h b/include/configs/mx53loco.h
index 1e60335..ad94c31 100644
--- a/include/configs/mx53loco.h
+++ b/include/configs/mx53loco.h
@@ -47,17 +47,16 @@ 
 #define CONFIG_SYS_MX53_UART1
 
 /* I2C Configs */
-#define CONFIG_CMD_I2C          1
-#define CONFIG_HARD_I2C         1
-#define CONFIG_I2C_MXC          1
-#define CONFIG_SYS_I2C_MX53_PORT2       1
+#define CONFIG_CMD_I2C
+#define CONFIG_HARD_I2C
+#define CONFIG_I2C_MXC
+#define CONFIG_SYS_I2C_MX53_PORT1
 #define CONFIG_SYS_I2C_SPEED            100000
 #define CONFIG_SYS_I2C_SLAVE            0xfe
 
 /* PMIC Configs */
-#define CONFIG_FSL_PMIC
-#define CONFIG_FSL_PMIC_I2C
-#define CONFIG_SYS_FSL_PMIC_I2C_ADDR    8
+#define CONFIG_DIALOG_PMIC
+#define CONFIG_SYS_DIALOG_PMIC_I2C_ADDR    0x48
 
 /* MMC Configs */
 #define CONFIG_FSL_ESDHC