linux-kernel - Re: [PATCH] mmc: dw_mmc: Add support for IMG Pistachio

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Date:	Wed, 19 Nov 2014 12:04:05 +0100
From:	Ulf Hansson <ulf.hansson@...aro.org>
To:	Andrew Bresticker <abrestic@...omium.org>
Cc:	Seungwon Jeon <tgih.jun@...sung.com>,
	Jaehoon Chung <jh80.chung@...sung.com>,
	Chris Ball <chris@...ntf.net>,
	James Hartley <James.Hartley@...tec.com>,
	Ezequiel Garcia <Ezequiel.Garcia@...tec.com>,
	Doug Anderson <dianders@...omium.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-mmc <linux-mmc@...r.kernel.org>
Subject: Re: [PATCH] mmc: dw_mmc: Add support for IMG Pistachio

On 13 November 2014 19:50, Andrew Bresticker <abrestic@...omium.org> wrote:
> Add support for the DW MMC host found on the Imagination Pistachio SoC.
> Like the DW MMC hosts found on SOCFPGA and Rockchip SoCs, the DW MMC
> host on Pistachio requires the use of SDMMC_CMD_USE_HOLD_REG.
>
> Signed-off-by: Andrew Bresticker <abrestic@...omium.org>

Thanks! Applied for next.

Kind regards
Uffe


> ---
>  .../devicetree/bindings/mmc/img-dw-mshc.txt        | 29 ++++++++++++++++++++++
>  drivers/mmc/host/dw_mmc-pltfm.c                    |  6 +++++
>  2 files changed, 35 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mmc/img-dw-mshc.txt
>
> diff --git a/Documentation/devicetree/bindings/mmc/img-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/img-dw-mshc.txt
> new file mode 100644
> index 0000000..85de99f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/img-dw-mshc.txt
> @@ -0,0 +1,29 @@
> +* Imagination specific extensions to the Synopsys Designware Mobile Storage
> +  Host Controller
> +
> +The Synopsys designware mobile storage host controller is used to interface
> +a SoC with storage medium such as eMMC or SD/MMC cards. This file documents
> +differences between the core Synopsys dw mshc controller properties described
> +by synopsys-dw-mshc.txt and the properties used by the Imagination specific
> +extensions to the Synopsys Designware Mobile Storage Host Controller.
> +
> +Required Properties:
> +
> +* compatible: should be
> +       - "img,pistachio-dw-mshc": for Pistachio SoCs
> +
> +Example:
> +
> +       mmc@...42000 {
> +               compatible = "img,pistachio-dw-mshc";
> +               reg = <0x18142000 0x400>;
> +               interrupts = <GIC_SHARED 39 IRQ_TYPE_LEVEL_HIGH>;
> +
> +               clocks = <&system_clk>, <&sdhost_clk>;
> +               clock-names = "biu", "ciu";
> +
> +               fifo-depth = <0x20>;
> +               bus-width = <4>;
> +               num-slots = <1>;
> +               disable-wp;
> +       };
> diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c
> index 8b65721..ec6dbcd 100644
> --- a/drivers/mmc/host/dw_mmc-pltfm.c
> +++ b/drivers/mmc/host/dw_mmc-pltfm.c
> @@ -35,6 +35,10 @@ static const struct dw_mci_drv_data socfpga_drv_data = {
>         .prepare_command        = dw_mci_pltfm_prepare_command,
>  };
>
> +static const struct dw_mci_drv_data pistachio_drv_data = {
> +       .prepare_command        = dw_mci_pltfm_prepare_command,
> +};
> +
>  int dw_mci_pltfm_register(struct platform_device *pdev,
>                           const struct dw_mci_drv_data *drv_data)
>  {
> @@ -90,6 +94,8 @@ static const struct of_device_id dw_mci_pltfm_match[] = {
>         { .compatible = "snps,dw-mshc", },
>         { .compatible = "altr,socfpga-dw-mshc",
>                 .data = &socfpga_drv_data },
> +       { .compatible = "img,pistachio-dw-mshc",
> +               .data = &pistachio_drv_data },
>         {},
>  };
>  MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
> --
> 2.1.0.rc2.206.gedb03e5
>
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