[U-Boot] [PATCH V2] omap: am335x_evm: enable i2c1 channel
Steve Sakoman
steve at sakoman.com
Fri Jun 22 19:45:57 CEST 2012
This patch sets up pinmux, enables fclk, and
defines CONFIG_I2C_MULTI_BUS
Signed-off-by: Steve Sakoman <steve at sakoman.com>
---
diff --git a/arch/arm/cpu/armv7/am33xx/clock.c
b/arch/arm/cpu/armv7/am33xx/clock.c
index bbb9c13..57bec98 100644
--- a/arch/arm/cpu/armv7/am33xx/clock.c
+++ b/arch/arm/cpu/armv7/am33xx/clock.c
@@ -118,6 +118,11 @@ static void enable_per_clocks(void)
writel(PRCM_MOD_EN, &cmwkup->wkup_i2c0ctrl);
while (readl(&cmwkup->wkup_i2c0ctrl) != PRCM_MOD_EN)
;
+
+ /* i2c1 */
+ writel(PRCM_MOD_EN, &cmper->i2c1clkctrl);
+ while (readl(&cmper->i2c1clkctrl) != PRCM_MOD_EN)
+ ;
}
static void mpu_pll_config(void)
diff --git a/board/ti/am335x/evm.c b/board/ti/am335x/evm.c
index 33758b5..ef27694 100644
--- a/board/ti/am335x/evm.c
+++ b/board/ti/am335x/evm.c
@@ -41,6 +41,7 @@ int board_init(void)
#ifdef CONFIG_I2C
enable_i2c0_pin_mux();
+ enable_i2c1_pin_mux();
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
diff --git a/board/ti/am335x/mux.c b/board/ti/am335x/mux.c
index 9ccb436..c696c0f 100644
--- a/board/ti/am335x/mux.c
+++ b/board/ti/am335x/mux.c
@@ -280,6 +280,14 @@ static struct module_pin_mux i2c0_pin_mux[] = {
{-1},
};
+static struct module_pin_mux i2c1_pin_mux[] = {
+ {OFFSET(spi0_d1), (MODE(2) | RXACTIVE |
+ PULLUDEN | SLEWCTRL)}, /* I2C_DATA */
+ {OFFSET(spi0_cs0), (MODE(2) | RXACTIVE |
+ PULLUDEN | SLEWCTRL)}, /* I2C_SCLK */
+ {-1},
+};
+
/*
* Configure the pin mux for the module
*/
@@ -310,3 +318,8 @@ void enable_i2c0_pin_mux(void)
{
configure_module_pin_mux(i2c0_pin_mux);
}
+
+void enable_i2c1_pin_mux(void)
+{
+ configure_module_pin_mux(i2c1_pin_mux);
+}
diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index 89e2aa0..2b41c1c 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -108,6 +108,7 @@
#define CONFIG_HARD_I2C
#define CONFIG_SYS_I2C_SPEED 100000
#define CONFIG_SYS_I2C_SLAVE 1
+#define CONFIG_I2C_MULTI_BUS
#define CONFIG_DRIVER_OMAP24XX_I2C
#define CONFIG_BAUDRATE 115200
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