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89 lines
2.2 KiB
Diff
89 lines
2.2 KiB
Diff
From c26ea602ff1a0f7d01421320ed5bea2f611f73cd Mon Sep 17 00:00:00 2001
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From: Hector Martin <marcan@marcan.st>
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Date: Sun, 12 Dec 2021 11:46:33 +0900
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Subject: [PATCH 068/171] dt-bindings: spi: apple,spi: Add binding for Apple
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SPI controllers
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The Apple SPI controller is present in SoCs such as the M1 (t8103) and
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M1 Pro/Max (t600x). This controller uses one IRQ and one clock, and
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doesn't need any special properties, so the binding is trivial.
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Signed-off-by: Hector Martin <marcan@marcan.st>
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---
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.../devicetree/bindings/spi/apple,spi.yaml | 63 +++++++++++++++++++
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1 file changed, 63 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/spi/apple,spi.yaml
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diff --git a/Documentation/devicetree/bindings/spi/apple,spi.yaml b/Documentation/devicetree/bindings/spi/apple,spi.yaml
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new file mode 100644
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index 000000000000..bcbdc8943e92
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/spi/apple,spi.yaml
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@@ -0,0 +1,63 @@
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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+%YAML 1.2
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+---
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+$id: http://devicetree.org/schemas/spi/apple,spi.yaml#
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+$schema: http://devicetree.org/meta-schemas/core.yaml#
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+
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+title: Apple ARM SoC SPI controller
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+
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+allOf:
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+ - $ref: "spi-controller.yaml#"
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+
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+maintainers:
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+ - Hector Martin <marcan@marcan.st>
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+
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+properties:
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+ compatible:
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+ items:
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+ - enum:
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+ - apple,t8103-spi
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+ - apple,t6000-spi
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+ - const: apple,spi
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+
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+ reg:
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+ maxItems: 1
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+
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+ clocks:
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+ maxItems: 1
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+
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+ interrupts:
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+ maxItems: 1
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+
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+ power-domains:
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+ maxItems: 1
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+
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+required:
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+ - compatible
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+ - reg
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+ - clocks
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+ - interrupts
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+ - '#address-cells'
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+ - '#size-cells'
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+
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+unevaluatedProperties: false
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+
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+examples:
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+ - |
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+ #include <dt-bindings/interrupt-controller/apple-aic.h>
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+ #include <dt-bindings/interrupt-controller/irq.h>
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+
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+ soc {
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+ #address-cells = <2>;
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+ #size-cells = <2>;
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+
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+ spi: spi@39b104000 {
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+ compatible = "apple,t6000-spi", "apple,spi";
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+ reg = <0x3 0x9b104000 0x0 0x4000>;
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+ interrupt-parent = <&aic>;
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+ interrupts = <AIC_IRQ 0 1107 IRQ_TYPE_LEVEL_HIGH>;
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ clocks = <&clk>;
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+ };
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+ };
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--
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2.34.1
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