[U-Boot] [PATCH 24/24] mx6qsabrelite: add i2c multi-bus support

Troy Kisky
2012-06-22T04:12:19Z

This includes bus recovery support.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
---
board/freescale/mx6qsabrelite/mx6qsabrelite.c | 50 +++++++++++++++++++++++--
include/configs/mx6qsabrelite.h | 6 +--
2 files changed, 48 insertions(+), 8 deletions(-)

diff --git a/board/freescale/mx6qsabrelite/mx6qsabrelite.c b/board/freescale/mx6qsabrelite/mx6qsabrelite.c
index 74ce84c..29c6630 100644
--- a/board/freescale/mx6qsabrelite/mx6qsabrelite.c
+++ b/board/freescale/mx6qsabrelite/mx6qsabrelite.c
@@ -27,6 +27,7 @@
#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>
@@ -72,9 +73,48 @@ 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[] = {
@@ -292,7 +332,9 @@ 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);

return 0;
}
diff --git a/include/configs/mx6qsabrelite.h b/include/configs/mx6qsabrelite.h
index df2b735..c3c6be2 100644
--- 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
--
1.7.9.5