On Wed, Sep 26, 2018 at 01:52:03PM -0700, Ryan Case wrote:
> From: Girish Mahadevan <[email protected]>
>
> Bindings for Qualcomm Quad SPI used on SoCs such as sdm845.
>
> Signed-off-by: Girish Mahadevan <[email protected]>
> Signed-off-by: Ryan Case <[email protected]>
> ---
>
> Changes in v3:
> - Added generic compatible string in addition to specific SoC
>
> Changes in v2:
> - Added commit text
> - Removed invalid property
> - Updated example to match sdm845 with attached spi-nor
>
> .../bindings/spi/qcom,spi-qcom-qspi.txt | 36 +++++++++++++++++++
> 1 file changed, 36 insertions(+)
> create mode 100644
> Documentation/devicetree/bindings/spi/qcom,spi-qcom-qspi.txt
>
> diff --git a/Documentation/devicetree/bindings/spi/qcom,spi-qcom-qspi.txt
> b/Documentation/devicetree/bindings/spi/qcom,spi-qcom-qspi.txt
> new file mode 100644
> index 000000000000..e13f5bb314ad
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/qcom,spi-qcom-qspi.txt
> @@ -0,0 +1,36 @@
> +Qualcomm Quad Serial Peripheral Interface (QSPI)
> +
> +The QSPI controller allows SPI protocol communication in single, dual, or
> quad
> +wire transmission modes for read/write access to slaves such as NOR flash.
> +
> +Required properties:
> +- compatible: An SoC specific identifier followed by "qcom,qspi-v1",
> such as
> + "qcom,sdm845-qspi", "qcom,qspi-v1"
> +- reg: Should contain the base register location and length.
> +- interrupts: Interrupt number used by the controller.
> +- clocks: Should contain the core and AHB clock.
> +- clock-names: Should be "core" for core clock and "iface" for AHB
> clock.
> +
> +SPI slave nodes must be children of the SPI master node and can contain
> +properties described in Documentation/devicetree/bindings/spi/spi-bus.txt
> +
> +Example:
> +
> + qspi: qspi@88df000 {
spi@...
> + compatible = "qcom,sdm845-qspi", "qcom,qspi-v1";
> + reg = <0x88df000 0x600>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
> + clock-names = "iface", "core";
> + clocks = <&gcc GCC_QSPI_CNOC_PERIPH_AHB_CLK>,
> + <&gcc GCC_QSPI_CORE_CLK>;
> +
> + device@0 {
flash@0
With that,
Reviewed-by: Rob Herring <[email protected]>
> + compatible = "jedec,spi-nor";
> + reg = <0>;
> + spi-max-frequency = <25000000>;
> + spi-tx-bus-width = <2>;
> + spi-rx-bus-width = <2>;
> + };
> + };
> --
> 2.19.0.605.g01d371f741-goog
>
