[U-Boot] [PATCH 4/5] mmc: sh_sdhi: Add MMC version 5.0 support

[Nobuhiro Iwamatsu]

Hi,

2017-05-13 22:51 GMT+09:00 Marek Vasut <marek.vasut at gmail.com>:
> From: Kouei Abe <kouei.abe.cp at renesas.com>
>
> Renesas SDHI SD/MMC driver did not support MMC version 5.0 devices.
> This adds MMC version 5.0 device support.
>
> Signed-off-by: Kouei Abe <kouei.abe.cp at renesas.com>
> Signed-off-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx at renesas.com>
> Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
> Cc: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx at renesas.com>
> Cc: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>
> Cc: Jaehoon Chung <jh80.chung at samsung.com>

Reviewed-by: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>

> ---
>  arch/arm/mach-rmobile/include/mach/sh_sdhi.h |  7 ++++++-
>  drivers/mmc/sh_sdhi.c                        | 24 +++++++++++++++++++-----
>  2 files changed, 25 insertions(+), 6 deletions(-)
>
> diff --git a/arch/arm/mach-rmobile/include/mach/sh_sdhi.h b/arch/arm/mach-rmobile/include/mach/sh_sdhi.h
> index a5ea45b707..1fb0648b12 100644
> --- a/arch/arm/mach-rmobile/include/mach/sh_sdhi.h
> +++ b/arch/arm/mach-rmobile/include/mach/sh_sdhi.h
> @@ -50,8 +50,10 @@
>  /* SDHI CMD VALUE */
>  #define CMD_MASK                       0x0000ffff
>  #define SDHI_APP                       0x0040
> +#define SDHI_MMC_SEND_OP_COND          0x0701
>  #define SDHI_SD_APP_SEND_SCR           0x0073
>  #define SDHI_SD_SWITCH                 0x1C06
> +#define SDHI_MMC_SEND_EXT_CSD          0x1C08
>
>  /* SDHI_PORTSEL */
>  #define USE_1PORT                      (1 << 8) /* 1 port */
> @@ -120,7 +122,10 @@
>  #define CLK_ENABLE                     (1 << 8)
>
>  /* SDHI_OPTION */
> -#define OPT_BUS_WIDTH_1                        (1 << 15)       /* bus width = 1 bit */
> +#define OPT_BUS_WIDTH_M                        (5 << 13)       /* 101b (15-13bit) */
> +#define OPT_BUS_WIDTH_1                        (4 << 13)       /* bus width = 1 bit */
> +#define OPT_BUS_WIDTH_4                        (0 << 13)       /* bus width = 4 bit */
> +#define OPT_BUS_WIDTH_8                        (1 << 13)       /* bus width = 8 bit */
>
>  /* SDHI_ERR_STS1 */
>  #define ERR_STS1_CRC_ERROR             ((1 << 11) | (1 << 10) | (1 << 9) | \
> diff --git a/drivers/mmc/sh_sdhi.c b/drivers/mmc/sh_sdhi.c
> index d1dd0f0fc3..c64beb6e2a 100644
> --- a/drivers/mmc/sh_sdhi.c
> +++ b/drivers/mmc/sh_sdhi.c
> @@ -489,6 +489,13 @@ static unsigned short sh_sdhi_set_cmd(struct sh_sdhi_host *host,
>                 else /* SD_SWITCH */
>                         opc = SDHI_SD_SWITCH;
>                 break;
> +       case MMC_CMD_SEND_OP_COND:
> +               opc = SDHI_MMC_SEND_OP_COND;
> +               break;
> +       case MMC_CMD_SEND_EXT_CSD:
> +               if (data)
> +                       opc = SDHI_MMC_SEND_EXT_CSD;
> +               break;
>         default:
>                 break;
>         }
> @@ -513,6 +520,7 @@ static unsigned short sh_sdhi_data_trans(struct sh_sdhi_host *host,
>         case MMC_CMD_READ_SINGLE_BLOCK:
>         case SDHI_SD_APP_SEND_SCR:
>         case SDHI_SD_SWITCH: /* SD_SWITCH */
> +       case SDHI_MMC_SEND_EXT_CSD:
>                 ret = sh_sdhi_single_read(host, data);
>                 break;
>         default:
> @@ -648,12 +656,18 @@ static int sh_sdhi_set_ios(struct mmc *mmc)
>         if (ret)
>                 return -EINVAL;
>
> -       if (mmc->bus_width == 4)
> -               sh_sdhi_writew(host, SDHI_OPTION, ~OPT_BUS_WIDTH_1 &
> -                              sh_sdhi_readw(host, SDHI_OPTION));
> +       if (mmc->bus_width == 8)
> +               sh_sdhi_writew(host, SDHI_OPTION,
> +                              OPT_BUS_WIDTH_8 | (~OPT_BUS_WIDTH_M &
> +                              sh_sdhi_readw(host, SDHI_OPTION)));
> +       else if (mmc->bus_width == 4)
> +               sh_sdhi_writew(host, SDHI_OPTION,
> +                              OPT_BUS_WIDTH_4 | (~OPT_BUS_WIDTH_M &
> +                              sh_sdhi_readw(host, SDHI_OPTION)));
>         else
> -               sh_sdhi_writew(host, SDHI_OPTION, OPT_BUS_WIDTH_1 |
> -                              sh_sdhi_readw(host, SDHI_OPTION));
> +               sh_sdhi_writew(host, SDHI_OPTION,
> +                              OPT_BUS_WIDTH_1 | (~OPT_BUS_WIDTH_M &
> +                              sh_sdhi_readw(host, SDHI_OPTION)));
>
>         debug("clock = %d, buswidth = %d\n", mmc->clock, mmc->bus_width);
>
> --
> 2.11.0
>



-- 
Nobuhiro Iwamatsu
   iwamatsu at {nigauri.org / debian.org}
   GPG ID: 40AD1FA6