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mx6qsabreauto: Add i2c to mx6qsabreauto board 

Add i2c2 and 3 to mx6qsabreauto board, i2c3 is multiplexed
use gpio to set steering.

Signed-off-by: Renato Frias <b13784@freescale.com>
Reviewed-by: Otavio Salvador <otavio@ossystems.com.br>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Renato Frias 2013-05-13 18:01:12 +00:00 committed by Stefano Babic
parent af0a37ff18
commit 195781657c
2 changed files with 56 additions and 0 deletions
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50
board/freescale/mx6qsabreauto/mx6qsabreauto.c
View File

@ -26,12 +26,14 @@
#include <asm/errno.h>
#include <asm/gpio.h>
#include <asm/imx-common/iomux-v3.h>
#include <asm/imx-common/mxc_i2c.h>
#include <asm/imx-common/boot_mode.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <miiphy.h>
#include <netdev.h>
#include <asm/arch/sys_proto.h>
#include <i2c.h>
DECLARE_GLOBAL_DATA_PTR;
@ -46,6 +48,12 @@ DECLARE_GLOBAL_DATA_PTR;
#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
#define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
PAD_CTL_ODE | PAD_CTL_SRE_FAST)
#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
@ -76,6 +84,41 @@ iomux_v3_cfg_t const enet_pads[] = {
MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
};
/* I2C2 PMIC, iPod, Tuner, Codec, Touch, HDMI EDID, MIPI CSI2 card */
struct i2c_pads_info i2c_pad_info1 = {
.scl = {
.i2c_mode = MX6_PAD_EIM_EB2__I2C2_SCL | PC,
.gpio_mode = MX6_PAD_EIM_EB2__GPIO_2_30 | PC,
.gp = IMX_GPIO_NR(2, 30)
},
.sda = {
.i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | PC,
.gpio_mode = MX6_PAD_KEY_ROW3__GPIO_4_13 | PC,
.gp = IMX_GPIO_NR(4, 13)
}
};
/*
* I2C3 MLB, Port Expanders (A, B, C), Video ADC, Light Sensor,
* Compass Sensor, Accelerometer, Res Touch
*/
struct i2c_pads_info i2c_pad_info2 = {
.scl = {
.i2c_mode = MX6_PAD_GPIO_3__I2C3_SCL | PC,
.gpio_mode = MX6_PAD_GPIO_3__GPIO_1_3 | PC,
.gp = IMX_GPIO_NR(1, 3)
},
.sda = {
.i2c_mode = MX6_PAD_EIM_D18__I2C3_SDA | PC,
.gpio_mode = MX6_PAD_EIM_D18__GPIO_3_18 | PC,
.gp = IMX_GPIO_NR(3, 18)
}
};
iomux_v3_cfg_t const i2c3_pads[] = {
MX6_PAD_EIM_A24__GPIO_5_4 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
static void setup_iomux_enet(void)
{
imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
@ -216,6 +259,13 @@ int board_init(void)
/* address of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
/* I2C 2 and 3 setup - I2C 3 hw mux with EIM */
setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
/* I2C 3 Steer */
gpio_direction_output(IMX_GPIO_NR(5, 4), 1);
imx_iomux_v3_setup_multiple_pads(i2c3_pads, ARRAY_SIZE(i2c3_pads));
setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
return 0;
}

6
include/configs/mx6qsabreauto.h
View File

@ -38,4 +38,10 @@
#define CONFIG_SYS_MMC_ENV_PART 1 /* Boot partition 1 */
#endif
/* I2C Configs */
#define CONFIG_CMD_I2C
#define CONFIG_I2C_MULTI_BUS
#define CONFIG_I2C_MXC
#define CONFIG_SYS_I2C_SPEED 100000
#endif /* __MX6QSABREAUTO_CONFIG_H */