[U-Boot] [PATCH] mx6slevk: Add SPI NOR flash support

[Jagan Teki]

On Fri, Apr 11, 2014 at 5:09 PM, Fabio Estevam <festevam at gmail.com> wrote:
> From: Fabio Estevam <fabio.estevam at freescale.com>
>
> mx6slevk has a m25p32 SPI NOR flash connected to ESCSPI port.
>
> Add support for it.
>
> Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
> ---
>  arch/arm/include/asm/arch-mx6/mx6sl_pins.h |  4 ++++
>  board/freescale/mx6slevk/mx6slevk.c        | 20 ++++++++++++++++++++
>  include/configs/mx6slevk.h                 | 12 ++++++++++++
>  3 files changed, 36 insertions(+)
>
> diff --git a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h
> index 5f9c90a..045ccc4 100644
> --- a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h
> +++ b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h
> @@ -10,6 +10,10 @@
>  #include <asm/imx-common/iomux-v3.h>
>
>  enum {
> +       MX6_PAD_ECSPI1_MISO__ECSPI_MISO                         = IOMUX_PAD(0x0358, 0x0068, 0, 0x0684, 0, 0),
> +       MX6_PAD_ECSPI1_MOSI__ECSPI_MOSI                         = IOMUX_PAD(0x035C, 0x006C, 0, 0x0688, 0, 0),
> +       MX6_PAD_ECSPI1_SCLK__ECSPI_SCLK                         = IOMUX_PAD(0x0360, 0x0070, 0, 0x067C, 0, 0),
> +       MX6_PAD_ECSPI1_SS0__GPIO4_IO11                          = IOMUX_PAD(0x0364, 0x0074, 5, 0x0000, 0, 0),
>         MX6_PAD_SD2_CLK__USDHC2_CLK                             = IOMUX_PAD(0x055C, 0x0254, 0, 0x0000, 0, 0),
>         MX6_PAD_SD2_CMD__USDHC2_CMD                             = IOMUX_PAD(0x0560, 0x0258, 0, 0x0000, 0, 0),
>         MX6_PAD_SD2_DAT0__USDHC2_DAT0                           = IOMUX_PAD(0x0564, 0x025C, 0, 0x0000, 0, 0),
> diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
> index aadad32..d2b64cc 100644
> --- a/board/freescale/mx6slevk/mx6slevk.c
> +++ b/board/freescale/mx6slevk/mx6slevk.c
> @@ -34,6 +34,9 @@ DECLARE_GLOBAL_DATA_PTR;
>         PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED   |             \
>         PAD_CTL_DSE_40ohm   | PAD_CTL_HYS)
>
> +#define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
> +                     PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
> +
>  #define ETH_PHY_RESET  IMX_GPIO_NR(4, 21)
>
>  int dram_init(void)
> @@ -71,6 +74,20 @@ static iomux_v3_cfg_t const fec_pads[] = {
>         MX6_PAD_FEC_TX_CLK__GPIO_4_21 | MUX_PAD_CTRL(NO_PAD_CTRL),
>  };
>
> +#ifdef CONFIG_MXC_SPI
> +static iomux_v3_cfg_t ecspi1_pads[] = {
> +       MX6_PAD_ECSPI1_MISO__ECSPI_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
> +       MX6_PAD_ECSPI1_MOSI__ECSPI_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
> +       MX6_PAD_ECSPI1_SCLK__ECSPI_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
> +       MX6_PAD_ECSPI1_SS0__GPIO4_IO11  | MUX_PAD_CTRL(NO_PAD_CTRL),
> +};
> +
> +static void setup_spi(void)
> +{
> +       imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
> +}
> +#endif
> +
>  static void setup_iomux_uart(void)
>  {
>         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
> @@ -132,6 +149,9 @@ static int setup_fec(void)
>  int board_early_init_f(void)
>  {
>         setup_iomux_uart();
> +#ifdef CONFIG_MXC_SPI
> +       setup_spi();
> +#endif
>         return 0;
>  }
>
> diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h
> index 1876dbf..3d05a64 100644
> --- a/include/configs/mx6slevk.h
> +++ b/include/configs/mx6slevk.h
> @@ -10,6 +10,7 @@
>  #define __CONFIG_H
>
>  #include <asm/arch/imx-regs.h>
> +#include <asm/imx-common/gpio.h>
>  #include <linux/sizes.h>
>  #include "mx6_common.h"
>
> @@ -196,4 +197,15 @@
>  #define CONFIG_CMD_CACHE
>  #endif
>
> +#define CONFIG_CMD_SF
> +#ifdef CONFIG_CMD_SF
> +#define CONFIG_SPI_FLASH
> +#define CONFIG_SPI_FLASH_STMICRO
> +#define CONFIG_MXC_SPI
> +#define CONFIG_SF_DEFAULT_BUS          0

*no_need* to define DEFAULT_BUS as 0 - it's default.

> +#define CONFIG_SF_DEFAULT_CS           (0 | (IMX_GPIO_NR(4, 11) << 8))
> +#define CONFIG_SF_DEFAULT_SPEED                20000000
> +#define CONFIG_SF_DEFAULT_MODE         SPI_MODE_0
> +#endif
> +
>  #endif                         /* __CONFIG_H */
> --
> 1.8.3.2

thanks!
-- 
Jagan.