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    SubjectRe: [PATCH v6 1/3] doc: dt: add documentation for Mediatek spi-nor controller
    On Fri, Nov 06, 2015 at 11:48:07PM +0800, 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>

    Acked-by: Rob Herring <robh@kernel.org>

    > ---
    > .../devicetree/bindings/mtd/mtk-quadspi.txt | 41 ++++++++++++++++++++++
    > 1 file changed, 41 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..866b492
    > --- /dev/null
    > +++ b/Documentation/devicetree/bindings/mtd/mtk-quadspi.txt
    > @@ -0,0 +1,41 @@
    > +* 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 nor controller
    > +- clock-names: the name of the clocks
    > + the clocks needed "spi" and "sf". "spi" is used for spi bus,
    > + and "sf" is used for controller, these are the clocks witch
    > + hardware needs to enabling nor flash and nor flash controller.
    > + See Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
    > +- #address-cells: should be <1>
    > +- #size-cells: should be <0>
    > +
    > +The SPI Flash must be a child of the nor_flash node and must have a
    > +compatible property.
    > +
    > +Required properties:
    > +- compatible: May include a device-specific string consisting of the manufacturer
    > + and name of the chip. Must also include "jedec,spi-nor" for any
    > + SPI NOR flash that can be identified by the JEDEC READ ID opcode (0x9F).
    > +- reg : Chip-Select number
    > +
    > +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>;
    > + status = "disabled";
    > +
    > + flash@0 {
    > + compatible = "jedec,spi-nor";
    > + reg = <0>;
    > + };
    > +};
    > +
    > --
    > 1.8.1.1.dirty
    >


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