On 10/04/2018 06:14 AM, Faiz Abbas wrote:
> Add information to document bindings for the MMC PHY
> on TI's AM654 devices.
>
> Signed-off-by: Faiz Abbas <faiz_abbas@xxxxxx>
> Signed-off-by: Sekhar Nori <nsekhar@xxxxxx>
> ---
> .../devicetree/bindings/phy/am654-mmc-phy.txt | 42 +++++++++++++++++++
> 1 file changed, 42 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/am654-mmc-phy.txt
>
> diff --git a/Documentation/devicetree/bindings/phy/am654-mmc-phy.txt b/Documentation/devicetree/bindings/phy/am654-mmc-phy.txt
> new file mode 100644
> index 000000000000..766921612758
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/am654-mmc-phy.txt
Name ti,am654-mmc-phy.txt might be more consistent name.
> @@ -0,0 +1,42 @@
> +TI AM654 MMC PHY
> +-------------------
> +
> +Required properties:
> + - compatible: ti,am654-emmc-phy
> + - #phy-cells: must be 0
> + - reg: PHY registers address offset and size
> + - clocks: must be phandle of the clock provider which is the host
> + controller
> + - clock-names: must be "mmcclk"
> + - ti,otap-del-sel: Output Tap Delay select.
> + - ti,trm-icp: DLL trim select.
> + - ti,driver-strength-ohm: driver strength in ohms.
> + Valid values are 33, 40, 50, 66, and 100 ohms.
> +
> +Example:
> + mmc_phy1: mmc_phy@10100 {
> + compatible = "ti,am654-mmc-phy";
> + reg = <0x10100 0x34>;
> + clocks = <&sdhci1>;
> + clock-names = "mmcclk";
> + #phy-cells = <0>;
> + ti,otap-del-sel = <0x2>;
> + ti,trm-icp = <0x8>;
> + status = "disabled";
No need for disabled in the example case. Also not sure the host
controller example below needs to be here, there are already examples
for that binding in mmc/arasan,sdhci.txt.
Andrew
> + };
> +
> +Host controller node:
> +
> + sdhci1: sdhci@0 {
> + compatible = "ti,am654-sdhci-5.1";
> + reg = <0x0 0x1000>;
> + power-domains = <&k3_pds 48>;
> + clocks = <&k3_clks 48 0>, <&k3_clks 48 1>;
> + clock-names = "clk_ahb", "clk_xin";
> + interrupts = <GIC_SPI 137 IRQ_TYPE_LEVEL_HIGH>;
> + clock-output-names = "mmc_cardclck";
> + #clock-cells = <0>;
> + phys=<&mmc_phy1>;
> + phy-names = "phy_arasan";
> + status = "disabled";
> + };
>
