mx6qsabrelite: add i2c multi-bus support

This includes bus recovery support.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Jason Liu <r64343@freescale.com>

diff --git a/board/freescale/mx6qsabrelite/mx6qsabrelite.c b/board/freescale/mx6qsabrelite/mx6qsabrelite.c
index 34f65e98e4719bc131f2e9c3fdf235a36def16ad..01e508354aa65a380f7beb3b31d370fd9b6e2b58 100644 (file)
--- a/board/freescale/mx6qsabrelite/mx6qsabrelite.c
+++ b/board/freescale/mx6qsabrelite/mx6qsabrelite.c
@@ -28,6 +28,7 @@
 #include <asm/errno.h>
 #include <asm/gpio.h>
 #include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/mxc_i2c.h>
 #include <mmc.h>
 #include <fsl_esdhc.h>
 #include <micrel.h>
@@ -77,9 +78,48 @@ iomux_v3_cfg_t uart2_pads[] = {
        MX6Q_PAD_EIM_D27__UART2_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
 };
 
-iomux_v3_cfg_t i2c3_pads[] = {
-       MX6Q_PAD_GPIO_5__I2C3_SCL | MUX_PAD_CTRL(I2C_PAD_CTRL),
-       MX6Q_PAD_GPIO_16__I2C3_SDA | MUX_PAD_CTRL(I2C_PAD_CTRL),
+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+
+/* I2C1, SGTL5000 */
+struct i2c_pads_info i2c_pad_info0 = {
+       .scl = {
+               .i2c_mode = MX6Q_PAD_EIM_D21__I2C1_SCL | PC,
+               .gpio_mode = MX6Q_PAD_EIM_D21__GPIO_3_21 | PC,
+               .gp = GPIO_NUMBER(3, 21)
+       },
+       .sda = {
+               .i2c_mode = MX6Q_PAD_EIM_D28__I2C1_SDA | PC,
+               .gpio_mode = MX6Q_PAD_EIM_D28__GPIO_3_28 | PC,
+               .gp = GPIO_NUMBER(3, 28)
+       }
+};
+
+/* I2C2 Camera, MIPI */
+struct i2c_pads_info i2c_pad_info1 = {
+       .scl = {
+               .i2c_mode = MX6Q_PAD_KEY_COL3__I2C2_SCL | PC,
+               .gpio_mode = MX6Q_PAD_KEY_COL3__GPIO_4_12 | PC,
+               .gp = GPIO_NUMBER(4, 12)
+       },
+       .sda = {
+               .i2c_mode = MX6Q_PAD_KEY_ROW3__I2C2_SDA | PC,
+               .gpio_mode = MX6Q_PAD_KEY_ROW3__GPIO_4_13 | PC,
+               .gp = GPIO_NUMBER(4, 13)
+       }
+};
+
+/* I2C3, J15 - RGB connector */
+struct i2c_pads_info i2c_pad_info2 = {
+       .scl = {
+               .i2c_mode = MX6Q_PAD_GPIO_5__I2C3_SCL | PC,
+               .gpio_mode = MX6Q_PAD_GPIO_5__GPIO_1_5 | PC,
+               .gp = GPIO_NUMBER(1, 5)
+       },
+       .sda = {
+               .i2c_mode = MX6Q_PAD_GPIO_16__I2C3_SDA | PC,
+               .gpio_mode = MX6Q_PAD_GPIO_16__GPIO_7_11 | PC,
+               .gp = GPIO_NUMBER(7, 11)
+       }
 };
 
 iomux_v3_cfg_t usdhc3_pads[] = {
@@ -346,7 +386,9 @@ int board_init(void)
 #ifdef CONFIG_MXC_SPI
        setup_spi();
 #endif
-       imx_iomux_v3_setup_multiple_pads(i2c3_pads, ARRAY_SIZE(i2c3_pads));
+       setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0);
+       setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
+       setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
 
 #ifdef CONFIG_CMD_SATA
        setup_sata();

diff --git a/include/configs/mx6qsabrelite.h b/include/configs/mx6qsabrelite.h
index e42fe6b00b445e2ea0623fb682cb758fdf09c586..0d376ba5cf67df31ca7ec0c583e73a31ce3dbee0 100644 (file)
--- a/include/configs/mx6qsabrelite.h
+++ b/include/configs/mx6qsabrelite.h
@@ -60,11 +60,9 @@
 
 /* I2C Configs */
 #define CONFIG_CMD_I2C
-#define CONFIG_HARD_I2C
+#define CONFIG_I2C_MULTI_BUS
 #define CONFIG_I2C_MXC
-#define CONFIG_SYS_I2C_BASE            I2C3_BASE_ADDR
-#define CONFIG_SYS_I2C_SPEED            100000
-#define CONFIG_SYS_I2C_SLAVE            0xfe
+#define CONFIG_SYS_I2C_SPEED           100000
 
 /* MMC Configs */
 #define CONFIG_FSL_ESDHC