linux-kernel - [PATCH v4 06/15] Documentation: add BCM6358 pincontroller binding documentation

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Message-Id: <20210304085710.7128-7-noltari@gmail.com>
Date:   Thu,  4 Mar 2021 09:57:01 +0100
From:   Álvaro Fernández Rojas 
        <noltari@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Michael Walle <michael@...le.cc>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Álvaro Fernández Rojas 
        <noltari@...il.com>, Jonas Gorski <jonas.gorski@...il.com>,
        Necip Fazil Yildiran <fazilyildiran@...il.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v4 06/15] Documentation: add BCM6358 pincontroller binding documentation

Add binding documentation for the pincontrol core found in BCM6358 SoCs.

Signed-off-by: Álvaro Fernández Rojas <noltari@...il.com>
Signed-off-by: Jonas Gorski <jonas.gorski@...il.com>
---
 v4: no changes
 v3: add new gpio node
 v2: remove interrupts

 .../pinctrl/brcm,bcm6358-pinctrl.yaml         | 137 ++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/brcm,bcm6358-pinctrl.yaml

diff --git a/Documentation/devicetree/bindings/pinctrl/brcm,bcm6358-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/brcm,bcm6358-pinctrl.yaml
new file mode 100644
index 000000000000..eb14dd4cdaaa
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/brcm,bcm6358-pinctrl.yaml
@@ -0,0 +1,137 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/brcm,bcm6358-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM6358 pin controller
+
+maintainers:
+  - Álvaro Fernández Rojas <noltari@...il.com>
+  - Jonas Gorski <jonas.gorski@...il.com>
+
+description: |+
+  The pin controller node should be the child of a syscon node.
+
+  Refer to the the bindings described in
+  Documentation/devicetree/bindings/mfd/syscon.yaml
+
+properties:
+  compatible:
+    const: brcm,bcm6358-pinctrl
+
+patternProperties:
+  '^gpio$':
+    type: object
+    properties:
+      compatible:
+        const: brcm,bcm6358-gpio
+
+      data:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: |
+          Offset in the register map for the data register (in bytes).
+
+      dirout:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: |
+          Offset in the register map for the dirout register (in bytes).
+
+      gpio-controller: true
+
+      "#gpio-cells":
+        const: 2
+
+      gpio-ranges:
+        maxItems: 1
+
+    required:
+      - gpio-controller
+      - gpio-ranges
+      - '#gpio-cells'
+
+  '^.*$':
+    if:
+      type: object
+    then:
+      properties:
+        function:
+          $ref: "/schemas/types.yaml#/definitions/string"
+          enum: [ ebi_cs, uart1, serial_led, legacy_led, led, spi_cs, utopia,
+                  pwm_syn_clk, sys_irq ]
+
+        pins:
+          $ref: "/schemas/types.yaml#/definitions/string"
+          enum: [ ebi_cs_grp, uart1_grp, serial_led_grp, legacy_led_grp,
+                  led_grp, spi_cs_grp, utopia_grp, pwm_syn_clk, sys_irq_grp ]
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    gpio_cntl@...e0080 {
+      compatible = "syscon", "simple-mfd";
+      reg = <0xfffe0080 0x80>;
+
+      pinctrl: pinctrl {
+        compatible = "brcm,bcm6358-pinctrl";
+
+        gpio {
+          compatible = "brcm,bcm6358-gpio";
+          data = <0xc>;
+          dirout = <0x4>;
+
+          gpio-controller;
+          gpio-ranges = <&pinctrl 0 0 40>;
+          #gpio-cells = <2>;
+        };
+
+        pinctrl_ebi_cs: ebi_cs {
+          function = "ebi_cs";
+          groups = "ebi_cs_grp";
+        };
+
+        pinctrl_uart1: uart1 {
+          function = "uart1";
+          groups = "uart1_grp";
+        };
+
+        pinctrl_serial_led: serial_led {
+          function = "serial_led";
+          groups = "serial_led_grp";
+        };
+
+        pinctrl_legacy_led: legacy_led {
+          function = "legacy_led";
+          groups = "legacy_led_grp";
+        };
+
+        pinctrl_led: led {
+          function = "led";
+          groups = "led_grp";
+        };
+
+        pinctrl_spi_cs_23: spi_cs {
+          function = "spi_cs";
+          groups = "spi_cs_grp";
+        };
+
+        pinctrl_utopia: utopia {
+          function = "utopia";
+          groups = "utopia_grp";
+        };
+
+        pinctrl_pwm_syn_clk: pwm_syn_clk {
+          function = "pwm_syn_clk";
+          groups = "pwm_syn_clk_grp";
+        };
+
+        pinctrl_sys_irq: sys_irq {
+          function = "sys_irq";
+          groups = "sys_irq_grp";
+        };
+      };
+    };
-- 
2.20.1