[U-Boot] [PATCH 1/2] mx6qsabreauto: Add i2c to mx6qsabreauto board

[Stefano Babic]

On 14/05/2013 06:01, Renato Frias wrote:
> Add i2c2 and 3 to mx6qsabreauto board, i2c3 is multiplexed
> use gpio to set steering.
> 
> Signed-off-by: Renato Frias <b13784 at freescale.com>
> ---
>  board/freescale/mx6qsabreauto/mx6qsabreauto.c |   50 +++++++++++++++++++++++++
>  include/configs/mx6qsabreauto.h               |    6 +++
>  2 files changed, 56 insertions(+)
> 
> diff --git a/board/freescale/mx6qsabreauto/mx6qsabreauto.c b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
> index bfe4868..d6df750 100644
> --- a/board/freescale/mx6qsabreauto/mx6qsabreauto.c
> +++ b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
> @@ -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;
>  }
>  
> diff --git a/include/configs/mx6qsabreauto.h b/include/configs/mx6qsabreauto.h
> index 1583c11..947ea60 100644
> --- a/include/configs/mx6qsabreauto.h
> +++ b/include/configs/mx6qsabreauto.h
> @@ -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 */
> 

Acked-by: Stefano Babic <sbabic at denx.de>

Best regards,
Stefano Babic

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