Re: [PATCH v2 1/3] doc: dt: add documentation for Mediatek spi-nor controller

Rob Herring
2015-09-21T13:52:02Z

On 09/18/2015 01:58 AM, Bayi Cheng wrote:
> Add device tree binding documentation for serial flash with
> Mediatek serial flash controller
>
> Signed-off-by: Bayi Cheng <bayi.cheng@mediatek.com>
> ---
> .../devicetree/bindings/mtd/mtk_quadspi.txt | 27 ++++++++++++++++++++++
> 1 file changed, 27 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mtd/mtk_quadspi.txt
>
> diff --git a/Documentation/devicetree/bindings/mtd/mtk_quadspi.txt b/Documentation/devicetree/bindings/mtd/mtk_quadspi.txt
> new file mode 100644
> index 0000000..380b907
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mtd/mtk_quadspi.txt
> @@ -0,0 +1,27 @@
> +* MTD SPI nor driver for MTK MT81xx (and similar) serial flash controller
> +
> +Required properties:
> +- compatible: should be "mediatek,mt8173-nor";
> +- reg: physical base address and length of the controller's register
> +- clocks: the phandle of the clock needed by the QuadSPI controller

QuadSPI?

Please document number of clocks and their use/function.

> +- clock-names: the name of the clocks
> + See Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
> +- #address-cells: should be <1>
> +- #size-cells: should be <0>
> +
> +Example:
> +
> +nor_flash: spi@1100d000 {
> + compatible = "mediatek,mt8173-nor";
> + reg = <0 0x1100d000 0 0xe0>;
> + clocks = <&pericfg CLK_PERI_SPI>,
> + <&topckgen CLK_TOP_SPINFI_IFR_SEL>;
> + clock-names = "spi", "sf";
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + flash@0 {
> + ....
> + };
> +};
> +
>