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mx6qsabrelite: add i2c multi-bus support

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This includes bus recovery support.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Jason Liu <r64343@freescale.com>
This commit is contained in:
Troy Kisky 2012-07-19 08:18:26 +00:00 committed by Heiko Schocher
parent cc54a0f7cc
commit 9c06782863
2 changed files with 48 additions and 8 deletions
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50
board/freescale/mx6qsabrelite/mx6qsabrelite.c
View file

@ -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();

6
include/configs/mx6qsabrelite.h
View file

@ -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