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authorFabio Estevam <festevam@gmail.com>2012-04-30 08:12:04 +0000
committerJohn Rigby <john.rigby@linaro.org>2012-05-02 19:44:15 -0600
commit2b1a445b1be9675b78ff652708656fb117d5ca8b (patch)
tree737ffdf6adf80ee13ef7e1cb126091a5071ce498
parent5bba013622b119b68411711f65ce4b105198d2f3 (diff)
downloadu-boot-linaro-stable-2b1a445b1be9675b78ff652708656fb117d5ca8b.tar.gz
mx53loco: Add support for 1GHz operation for DA9053-based boards2012.05.12012.05-12012.05
There are two types of mx53loco boards: initial boards were built with a Dialog DA9053 PMIC and more recent version is based on a Freescale MC34708 PMIC. Add DA9053 PMIC support and adjust the required voltages and clocks for running the CPU at 1GHz. Tested on both versions of mx53loco boards. In the case of a MC34708-based board the CPU operating voltage remains at 800MHz. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
-rw-r--r--board/freescale/mx53loco/mx53loco.c71
-rw-r--r--include/configs/mx53loco.h14
2 files changed, 85 insertions, 0 deletions
diff --git a/board/freescale/mx53loco/mx53loco.c b/board/freescale/mx53loco/mx53loco.c
index 46aaeb215..0dcec9b98 100644
--- a/board/freescale/mx53loco/mx53loco.c
+++ b/board/freescale/mx53loco/mx53loco.c
@@ -36,6 +36,8 @@
#include <mmc.h>
#include <fsl_esdhc.h>
#include <asm/gpio.h>
+#include <pmic.h>
+#include <dialog_pmic.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -291,6 +293,71 @@ int board_mmc_init(bd_t *bis)
}
#endif
+static void setup_iomux_i2c(void)
+{
+ /* 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);
+}
+
+static int power_init(void)
+{
+ unsigned int val, ret;
+ struct pmic *p;
+
+ pmic_init();
+ p = get_pmic();
+
+ /* Set VDDA to 1.25V */
+ val = DA9052_BUCKCORE_BCOREEN | DA_BUCKCORE_VBCORE_1_250V;
+ ret = pmic_reg_write(p, DA9053_BUCKCORE_REG, val);
+
+ ret |= pmic_reg_read(p, DA9053_SUPPLY_REG, &val);
+ val |= DA9052_SUPPLY_VBCOREGO;
+ ret |= pmic_reg_write(p, DA9053_SUPPLY_REG, val);
+
+ /* Set Vcc peripheral to 1.35V */
+ ret |= pmic_reg_write(p, DA9053_BUCKPRO_REG, 0x62);
+ ret |= pmic_reg_write(p, DA9053_SUPPLY_REG, 0x62);
+
+ return ret;
+}
+
+static void clock_1GHz(void)
+{
+ int ret;
+ u32 ref_clk = CONFIG_SYS_MX5_HCLK;
+ /*
+ * After increasing voltage to 1.25V, we can switch
+ * CPU clock to 1GHz and DDR to 400MHz safely
+ */
+ ret = mxc_set_clock(ref_clk, 1000, MXC_ARM_CLK);
+ if (ret)
+ 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("CPU: Switch DDR clock to 400MHz failed\n");
+}
+
int board_early_init_f(void)
{
setup_iomux_uart();
@@ -316,7 +383,11 @@ int print_cpuinfo(void)
#ifdef CONFIG_BOARD_LATE_INIT
int board_late_init(void)
{
+ setup_iomux_i2c();
+ if (!power_init())
+ clock_1GHz();
print_cpuinfo();
+
return 0;
}
#endif
diff --git a/include/configs/mx53loco.h b/include/configs/mx53loco.h
index bc4aba915..7cca599b2 100644
--- a/include/configs/mx53loco.h
+++ b/include/configs/mx53loco.h
@@ -41,6 +41,7 @@
#define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE + 2 * 1024 * 1024)
#define CONFIG_BOARD_EARLY_INIT_F
+#define CONFIG_BOARD_LATE_INIT
#define CONFIG_MXC_GPIO
#define CONFIG_MXC_UART
@@ -98,6 +99,19 @@
#define CONFIG_MXC_USB_PORTSC (PORT_PTS_UTMI | PORT_PTS_PTW)
#define CONFIG_MXC_USB_FLAGS 0
+/* I2C Configs */
+#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 Controller */
+#define CONFIG_PMIC
+#define CONFIG_PMIC_I2C
+#define CONFIG_DIALOG_PMIC
+#define CONFIG_SYS_DIALOG_PMIC_I2C_ADDR 0x48
+
/* allow to overwrite serial and ethaddr */
#define CONFIG_ENV_OVERWRITE
#define CONFIG_CONS_INDEX 1