Add device-tree binding documentation for QCOM QPIC-SNAND-NAND Flash Interface. Co-developed-by: Sricharan Ramabadhran <quic_srichara@xxxxxxxxxxx> Signed-off-by: Sricharan Ramabadhran <quic_srichara@xxxxxxxxxxx> Co-developed-by: Varadarajan Narayanan <quic_varada@xxxxxxxxxxx> Signed-off-by: Varadarajan Narayanan <quic_varada@xxxxxxxxxxx> Signed-off-by: Md Sadre Alam <quic_mdalam@xxxxxxxxxxx> --- .../bindings/spi/qcom,spi-qpic-snand.yaml | 82 +++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/qcom,spi-qpic-snand.yaml diff --git a/Documentation/devicetree/bindings/spi/qcom,spi-qpic-snand.yaml b/Documentation/devicetree/bindings/spi/qcom,spi-qpic-snand.yaml new file mode 100644 index 000000000000..fa7484ce1319 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/qcom,spi-qpic-snand.yaml @@ -0,0 +1,82 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spi/qcom,spi-qpic-snand.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm QPIC NAND controller + +maintainers: + - Md sadre Alam <quic_mdalam@xxxxxxxxxxx> + +properties: + compatible: + enum: + - qcom,ipq9574-snand + + reg: + maxItems: 1 + + clocks: + minItems: 2 + maxItems: 3 + + clock-names: + minItems: 2 + maxItems: 3 + +allOf: + - $ref: /schemas/spi/spi-controller.yaml# + - if: + properties: + compatible: + contains: + enum: + - qcom,ipq9574-snand + + then: + properties: + dmas: + items: + - description: tx DMA channel + - description: rx DMA channel + - description: cmd DMA channel + + dma-names: + items: + - const: tx + - const: rx + - const: cmd +required: + - compatible + - reg + - clocks + - clock-names + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/clock/qcom,ipq9574-gcc.h> + qpic_nand: spi@79b0000 { + compatible = "qcom,ipq9574-snand"; + reg = <0x1ac00000 0x800>; + + clocks = <&gcc GCC_QPIC_CLK>, + <&gcc GCC_QPIC_AHB_CLK>, + <&gcc GCC_QPIC_IO_MACRO_CLK>; + clock-names = "core", "aon", "iom"; + + #address-cells = <1>; + #size-cells = <0>; + + flash@0 { + compatible = "spi-nand"; + reg = <0>; + #address-cells = <1>; + #size-cells = <1>; + nand-ecc-engine = <&qpic_nand>; + nand-ecc-strength = <4>; + nand-ecc-step-size = <512>; + }; + }; -- 2.34.1
