linux-kernel - [PATCH v1 17/43] dt-bindings: spi: Add Cirrus EP93xx

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Message-Id: <20230601053546.9574-18-nikita.shubin@maquefel.me>
Date:   Thu,  1 Jun 2023 08:34:08 +0300
From:   Nikita Shubin <nikita.shubin@...uefel.me>
To:     Alexander Sverdlin <alexander.sverdlin@...il.com>,
        Arnd Bergmann <arnd@...db.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Nikita Shubin <nikita.shubin@...uefel.me>
Cc:     Michael Peters <mpeters@...eddedTS.com>,
        Kris Bahnsen <kris@...eddedTS.com>, linux-spi@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 17/43] dt-bindings: spi: Add Cirrus EP93xx

Add YAML bindings for ep93xx SoC SPI.

Signed-off-by: Nikita Shubin <nikita.shubin@...uefel.me>
---

Notes:
    v0 -> v1:
    Krzysztof Kozlowski:
    - replaced maintainers
    - removed wildcards
    - use fallback compatible and list all possible compatibles
    - drop quotes in ref
    - dropped "clock-names"
    - dropped label
    - fix ident

 .../devicetree/bindings/spi/spi-ep9301.yaml   | 69 +++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/spi-ep9301.yaml

diff --git a/Documentation/devicetree/bindings/spi/spi-ep9301.yaml b/Documentation/devicetree/bindings/spi/spi-ep9301.yaml
new file mode 100644
index 000000000000..c363b25a3074
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-ep9301.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/spi-ep9301.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: EP93xx SoC SPI controller
+
+maintainers:
+  - Alexander Sverdlin <alexander.sverdlin@...il.com>
+  - Nikita Shubin <nikita.shubin@...uefel.me>
+
+allOf:
+  - $ref: spi-controller.yaml#
+
+properties:
+  "#address-cells": true
+  "#size-cells": true
+
+  compatible:
+    oneOf:
+      - const: cirrus,ep9301-spi
+      - items:
+          - enum:
+              - cirrus,ep9302-spi
+              - cirrus,ep9307-spi
+              - cirrus,ep9312-spi
+              - cirrus,ep9315-spi
+          - const: cirrus,ep9301-spi
+
+  reg:
+    items:
+      - description: SPI registers region
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: SPI Controller reference clock source
+
+  cs-gpios: true
+
+  cirrus,ep9301-use-dma:
+    description: Flag indicating that the SPI should use dma
+    type: boolean
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/cirrus,ep93xx-clock.h>
+    spi@...a0000 {
+      compatible = "cirrus,ep9301-spi";
+      reg = <0x808a0000 0x18>;
+      interrupt-parent = <&vic1>;
+      interrupts = <21>;
+      clocks = <&syscon EP93XX_CLK_SPI>;
+      cs-gpios = <&gpio5 2 0>;
+      cirrus,ep9301-use-dma;
+    };
+
+...
-- 
2.37.4