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>

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)

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
 

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);
+}

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