omap: am335x_evm: enable i2c1 channel
This patch sets up pinmux, enables fclk, and
defines CONFIG_I2C_MULTI_BUS
Signed-off-by: Steve Sakoman <steve@sakoman.com>
diff --git a/arch/arm/cpu/armv7/am33xx/clock.c b/arch/arm/cpu/armv7/am33xx/clock.c
index ddce213..16beb4f 100644
--- a/arch/arm/cpu/armv7/am33xx/clock.c
+++ b/arch/arm/cpu/armv7/am33xx/clock.c
@@ -133,6 +133,11 @@
writel(PRCM_MOD_EN, &cmper->gpio3clkctrl);
while (readl(&cmper->gpio3clkctrl) != 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 f2e355c..0d0affa 100644
--- a/board/ti/am335x/evm.c
+++ b/board/ti/am335x/evm.c
@@ -30,6 +30,7 @@
#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 @@
{-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 @@
{
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