Re: [PATCH 2/3] dt-bindings: spi: apple,spi: Add binding for Apple SPI controllers
From: Rob Herring <robh@kernel.org>
Date: 2021-12-15 20:05:22
Also in:
linux-devicetree, linux-spi, lkml
On Sun, Dec 12, 2021 at 12:47:25PM +0900, Hector Martin wrote:
quoted hunk ↗ jump to hunk
The Apple SPI controller is present in SoCs such as the M1 (t8103) and M1 Pro/Max (t600x). This controller uses one IRQ and one clock, and doesn't need any special properties, so the binding is trivial. Signed-off-by: Hector Martin <redacted> --- .../devicetree/bindings/spi/apple,spi.yaml | 63 +++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/apple,spi.yamldiff --git a/Documentation/devicetree/bindings/spi/apple,spi.yaml b/Documentation/devicetree/bindings/spi/apple,spi.yaml new file mode 100644 index 000000000000..bcbdc8943e92 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/apple,spi.yaml@@ -0,0 +1,63 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spi/apple,spi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple ARM SoC SPI controller + +allOf: + - $ref: "spi-controller.yaml#" + +maintainers: + - Hector Martin <marcan@marcan.st> + +properties: + compatible: + items: + - enum: + - apple,t8103-spi + - apple,t6000-spi + - const: apple,spi + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + interrupts: + maxItems: 1 + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + - clocks + - interrupts
+ - '#address-cells' + - '#size-cells'
Already required by spi-controller.yaml. Otherwise, Reviewed-by: Rob Herring <robh@kernel.org>
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/apple-aic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ spi: spi@39b104000 {
+ compatible = "apple,t6000-spi", "apple,spi";
+ reg = <0x3 0x9b104000 0x0 0x4000>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 0 1107 IRQ_TYPE_LEVEL_HIGH>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clocks = <&clk>;
+ };
+ };
--
2.33.0
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