linux-kernel - [PATCH v4 4/6] gpio: sifive: Add DT documentation for SiFive GPIO

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Message-Id: <1575976274-13487-5-git-send-email-yash.shah@sifive.com>
Date:   Tue, 10 Dec 2019 16:41:12 +0530
From:   Yash Shah <yash.shah@...ive.com>
To:     linus.walleij@...aro.org, bgolaszewski@...libre.com,
        robh+dt@...nel.org, mark.rutland@....com, palmer@...belt.com,
        paul.walmsley@...ive.com
Cc:     aou@...s.berkeley.edu, tglx@...utronix.de, jason@...edaemon.net,
        maz@...nel.org, bmeng.cn@...il.com, atish.patra@....com,
        sagar.kadam@...ive.com, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, sachin.ghadi@...ive.com,
        Yash Shah <yash.shah@...ive.com>
Subject: [PATCH v4 4/6] gpio: sifive: Add DT documentation for SiFive GPIO

DT json-schema for GPIO controller added.

Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Wesley W. Terpstra <wesley@...ive.com>
[Atish: Compatible string update]
Signed-off-by: Atish Patra <atish.patra@....com>
Signed-off-by: Yash Shah <yash.shah@...ive.com>
---
 .../devicetree/bindings/gpio/sifive,gpio.yaml      | 68 ++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/sifive,gpio.yaml

diff --git a/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml b/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml
new file mode 100644
index 0000000..418e838
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/sifive,gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SiFive GPIO controller
+
+maintainers:
+  - Yash Shah <yash.shah@...ive.com>
+  - Paul Walmsley <paul.walmsley@...ive.com>
+
+properties:
+  compatible:
+    items:
+      - const: sifive,fu540-c000-gpio
+      - const: sifive,gpio0
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    description:
+      interrupt mapping one per GPIO. Maximum 16 GPIOs.
+    minItems: 1
+    maxItems: 16
+
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 2
+
+  clocks:
+    maxItems: 1
+
+  "#gpio-cells":
+    const: 2
+
+  gpio-controller: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-controller
+  - "#interrupt-cells"
+  - clocks
+  - "#gpio-cells"
+  - gpio-controller
+
+additionalProperties: false
+
+examples:
+  - |
+      #include <dt-bindings/clock/sifive-fu540-prci.h>
+      gpio@...60000 {
+        compatible = "sifive,fu540-c000-gpio", "sifive,gpio0";
+        interrupt-parent = <&plic>;
+        interrupts = <7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22>;
+        reg = <0x0 0x10060000 0x0 0x1000>;
+        clocks = <&tlclk PRCI_CLK_TLCLK>;
+        gpio-controller;
+        #gpio-cells = <2>;
+        interrupt-controller;
+        #interrupt-cells = <2>;
+      };
+
+...
-- 
2.7.4