linux-kernel - Re: [PATCH v2 1/2] dt-bindings: mmc: add DT bindings for Milbeaut SD controller

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Message-ID: <20190708212630.GA20487@bogus>
Date:   Mon, 8 Jul 2019 15:26:30 -0600
From:   Rob Herring <robh@...nel.org>
To:     Takao Orito <orito.takao@...ionext.com>
Cc:     ulf.hansson@...aro.org, mark.rutland@....com,
        linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, masami.hiramatsu@...aro.org,
        jaswinder.singh@...aro.org, sugaya.taichi@...ionext.com,
        kasai.kazuhiro@...ionext.com, kanematsu.shinji@...ionext.com
Subject: Re: [PATCH v2 1/2] dt-bindings: mmc: add DT bindings for Milbeaut SD
 controller

On Thu, May 30, 2019 at 06:22:11PM +0900, Takao Orito wrote:
> Add the device-tree binding documentation for Milbeaut SDHCI driver.
> 
> Signed-off-by: Takao Orito <orito.takao@...ionext.com>
> ---
>  .../devicetree/bindings/mmc/sdhci-milbeaut.txt     | 32 ++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-milbeaut.txt
> 
> diff --git a/Documentation/devicetree/bindings/mmc/sdhci-milbeaut.txt b/Documentation/devicetree/bindings/mmc/sdhci-milbeaut.txt
> new file mode 100644
> index 0000000..6063116
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/sdhci-milbeaut.txt
> @@ -0,0 +1,32 @@
> +* SOCIONEXT Milbeaut SDHCI controller
> +
> +This file documents differences between the core properties in mmc.txt
> +and the properties used by the sdhci_milbeaut driver.
> +
> +Required properties:
> +- compatible: "socionext,milbeaut-m10v-sdhci-3.0"
> +- clocks: Must contain an entry for each entry in clock-names. It is a
> +  list of phandles and clock-specifier pairs.
> +  See ../clocks/clock-bindings.txt for details.
> +- clock-names: Should contain the following two entries:
> +	"iface" - clock used for sdhci interface
> +	"core"  - core clock for sdhci controller
> +- vmmc-supply: a phandle of a fixed GPIO regulator

Being a fixed GPIO regulator is board specific and outside the scope of 
the binding. Otherwise,

Reviewed-by: Rob Herring <robh@...nel.org>

> +
> +Optional properties:
> +- fujitsu,cmd-dat-delay-select: boolean property indicating that this host
> +  requires the CMD_DAT_DELAY control to be enabled.
> +
> +Example:
> +	sdhci3: mmc@...10000 {
> +		compatible = "socionext,milbeaut-m10v-sdhci-3.0";
> +		reg = <0x1b010000 0x10000>;
> +		interrupts = <0 265 0x4>;
> +		voltage-ranges = <3300 3300>;
> +		bus-width = <4>;
> +		clocks = <&clk 7>, <&ahb_clk>;
> +		clock-names = "core", "iface";
> +		cap-sdio-irq;
> +		vmmc-supply = <&vcc_sdhci3>;
> +		fujitsu,cmd-dat-delay-select;
> +	};
> -- 
> 1.9.1
> 
>