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 (file)
--- a/arch/arm/cpu/armv7/am33xx/clock.c
+++ b/arch/arm/cpu/armv7/am33xx/clock.c
@@ -133,6 +133,11 @@ static void enable_per_clocks(void)
        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 (file)
--- a/board/ti/am335x/evm.c
+++ b/board/ti/am335x/evm.c
@@ -30,6 +30,7 @@ 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 (file)
--- 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 (file)
--- 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