[U-Boot] [PATCH 1/2] imx7: SPI: add suport for SPI flash in mikroBUS slot

[Jagan Teki]

On Thu, Nov 10, 2016 at 9:34 PM, Angus Ainslie <angus at akkea.ca> wrote:
> Enable the escpi3 nets attached to the mikroBUS slot
> on the i.MX7 Sabre evalution board. Also enble the SPI flash
> commands to work with the "flash click" board.
> ---
>  board/freescale/mx7dsabresd/mx7dsabresd.c | 24 ++++++++++++++++++++++++
>  configs/mx7dsabresd_secure_defconfig      |  2 ++
>  include/configs/mx7dsabresd.h             |  4 ++++
>  3 files changed, 30 insertions(+)
>
> CC: Stefano Babic <sbabic at denx.de>
> CC: Jagan Teki <jteki at openedev.com>
> diff --git a/board/freescale/mx7dsabresd/mx7dsabresd.c b/board/freescale/mx7dsabresd/mx7dsabresd.c
> index b936544..6ccdd4b 100644
> --- a/board/freescale/mx7dsabresd/mx7dsabresd.c
> +++ b/board/freescale/mx7dsabresd/mx7dsabresd.c
> @@ -50,6 +50,9 @@ DECLARE_GLOBAL_DATA_PTR;
>
>  #define NAND_PAD_CTRL (PAD_CTL_DSE_3P3V_49OHM | PAD_CTL_SRE_SLOW | PAD_CTL_HYS)
>
> +#define SPI_PAD_CTRL \
> +  (PAD_CTL_HYS | PAD_CTL_DSE_3P3V_49OHM | PAD_CTL_SRE_FAST)
> +
>  #define NAND_PAD_READY0_CTRL (PAD_CTL_DSE_3P3V_49OHM | PAD_CTL_PUS_PU5KOHM)
>  #ifdef CONFIG_SYS_I2C_MXC
>  #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
> @@ -68,6 +71,23 @@ static struct i2c_pads_info i2c_pad_info1 = {
>  };
>  #endif
>
> +static iomux_v3_cfg_t const ecspi3_pads[] = {
> +    MX7D_PAD_SAI2_RX_DATA__ECSPI3_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
> +    MX7D_PAD_SAI2_TX_SYNC__ECSPI3_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
> +    MX7D_PAD_SAI2_TX_BCLK__ECSPI3_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
> +    MX7D_PAD_SAI2_TX_DATA__GPIO6_IO22 | MUX_PAD_CTRL(NO_PAD_CTRL),
> +};
> +
> +int board_spi_cs_gpio(unsigned bus, unsigned cs)
> +{
> +         return (bus == 2 && cs == 0) ? (IMX_GPIO_NR(6, 22)) : -1;
> +}
> +
> +static void setup_spi(void)
> +{
> +         imx_iomux_v3_setup_multiple_pads(ecspi3_pads, ARRAY_SIZE(ecspi3_pads));
> +}
> +
>  int dram_init(void)
>  {
>         gd->ram_size = PHYS_SDRAM_SIZE;
> @@ -553,6 +573,10 @@ int board_init(void)
>         board_qspi_init();
>  #endif
>
> +#ifdef CONFIG_MXC_SPI
> +       setup_spi();
> +#endif
> +
>         return 0;
>  }
>
> diff --git a/configs/mx7dsabresd_secure_defconfig b/configs/mx7dsabresd_secure_defconfig
> index 126ce31..c16ba97 100644
> --- a/configs/mx7dsabresd_secure_defconfig
> +++ b/configs/mx7dsabresd_secure_defconfig
> @@ -45,3 +45,5 @@ CONFIG_G_DNL_MANUFACTURER="FSL"
>  CONFIG_G_DNL_VENDOR_NUM=0x0525
>  CONFIG_G_DNL_PRODUCT_NUM=0xa4a5
>  CONFIG_OF_LIBFDT=y
> +CONFIG_SPI_FLASH=y
> +CONFIG_SPI_FLASH_EON=y
> diff --git a/include/configs/mx7dsabresd.h b/include/configs/mx7dsabresd.h
> index 360a5e0..5609bbe 100644
> --- a/include/configs/mx7dsabresd.h
> +++ b/include/configs/mx7dsabresd.h
> @@ -201,6 +201,10 @@
>  #define CONFIG_ENV_SIZE                        SZ_8K
>  #define CONFIG_ENV_IS_IN_MMC
>
> +/* SPI flash support */
> +#define CONFIG_CMD_SF

Move this to defconfig.

thanks!
-- 
Jagan Teki
Free Software Engineer | www.openedev.com
U-Boot, Linux | Upstream Maintainer
Hyderabad, India.