i.MX31: Enable SPI and MC13783/RTC support for the Litekit board

This patch enables SPI and MC13783/RTC support for the Litekit board.

Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com>

board/imx31_litekit/imx31_litekit.c

@@ -52,6 +52,18 @@ int board_init (void)
 	mx31_gpio_mux(MUX_RTS1__UART1_RTS_B);
 	mx31_gpio_mux(MUX_RTS1__UART1_CTS_B);
 
+	/* SPI2 */
+	mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SS2);
+	mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SCLK);
+	mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SPI_RDY);
+	mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_MOSI);
+	mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_MISO);
+	mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SS0);
+	mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SS1);
+
+	/* start SPI2 clock */
+	__REG(CCM_CGR2) = __REG(CCM_CGR2) | (3 << 4);
+
 	gd->bd->bi_arch_number = MACH_TYPE_MX31LITE; /* board id for linux */
 	gd->bd->bi_boot_params = (0x80000100);	/* adress of boot parameters */
 

include/configs/imx31_litekit.h

@@ -63,6 +63,12 @@
 #define CONFIG_MX31_UART	1
 #define CFG_MX31_UART1		1
 
+#define CONFIG_HARD_SPI		1
+#define CONFIG_MXC_SPI		1
+#define CONFIG_MXC_SPI_IFACE	1
+
+#define CONFIG_RTC_MC13783	1
+
 /* allow to overwrite serial and ethaddr */
 #define CONFIG_ENV_OVERWRITE
 #define CONFIG_CONS_INDEX	1
@@ -77,6 +83,8 @@
 
 #define CONFIG_CMD_MII
 #define CONFIG_CMD_PING
+#define CONFIG_CMD_SPI
+#define CONFIG_CMD_DATE
 
 #define CONFIG_BOOTDELAY	3