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authorJason Liu <jason.hui@linaro.org>2011-04-12 16:30:06 +0800
committerEric Miao <eric.miao@linaro.org>2011-06-28 18:46:23 +0800
commit1140fd5b523336f116c86b3994c164f76acac44c (patch)
tree9d337dd9e1e054a2902cfaf839c73b362685e91b
parent83c32e2da57aa75eb72d569ed4ce8036cb5dd7f4 (diff)
downloadu-boot-linaro-natty-1140fd5b523336f116c86b3994c164f76acac44c.tar.gz
mx53loco: Add power init support
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> Signed-off-by: Eric Miao <eric.miao@linaro.org>
-rw-r--r--arch/arm/include/asm/arch-mx5/sys_proto.h2
-rw-r--r--board/freescale/mx53loco/mx53loco.c93
-rw-r--r--include/configs/mx53loco.h12
3 files changed, 107 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-mx5/sys_proto.h b/arch/arm/include/asm/arch-mx5/sys_proto.h
index f687503..2d7e9ed 100644
--- a/arch/arm/include/asm/arch-mx5/sys_proto.h
+++ b/arch/arm/include/asm/arch-mx5/sys_proto.h
@@ -27,5 +27,7 @@
u32 get_cpu_rev(void);
#define is_soc_rev(rev) ((get_cpu_rev() & 0xFF) - rev)
void sdelay(unsigned long);
+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 d032428..62ed400 100644
--- a/board/freescale/mx53loco/mx53loco.c
+++ b/board/freescale/mx53loco/mx53loco.c
@@ -35,6 +35,7 @@
#include <mmc.h>
#include <fsl_esdhc.h>
#include <mxc_gpio.h>
+#include <da9053.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -278,6 +279,93 @@ 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();
@@ -291,6 +379,11 @@ 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 bf545cf..cb01b88 100644
--- a/include/configs/mx53loco.h
+++ b/include/configs/mx53loco.h
@@ -48,6 +48,18 @@
#define CONFIG_MXC_UART
#define CONFIG_SYS_MX53_UART1
+/* I2C Configs */
+#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_DIALOG_PMIC
+#define CONFIG_SYS_DIALOG_PMIC_I2C_ADDR 0x48
+
/* MMC Configs */
#define CONFIG_FSL_ESDHC
#define CONFIG_SYS_FSL_ESDHC_ADDR 0