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Message-Id: <20220705155929.25565-1-pali@kernel.org>
Date:   Tue,  5 Jul 2022 17:59:28 +0200
From:   Pali Rohár <pali@...nel.org>
To:     Pavel Machek <pavel@....cz>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Marek Behún <kabel@...nel.org>
Cc:     linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/2] [RFT] dt-bindings: leds: Add cznic,turris1x-leds.yaml binding

Add device-tree bindings documentation for Turris 1.x RGB LEDs.

Signed-off-by: Pali Rohár <pali@...nel.org>

---
Changes in v2:
* Fix schema errors
---
 .../bindings/leds/cznic,turris1x-leds.yaml    | 118 ++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/cznic,turris1x-leds.yaml

diff --git a/Documentation/devicetree/bindings/leds/cznic,turris1x-leds.yaml b/Documentation/devicetree/bindings/leds/cznic,turris1x-leds.yaml
new file mode 100644
index 000000000000..bcaab5b03128
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/cznic,turris1x-leds.yaml
@@ -0,0 +1,118 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/cznic,turris1x-leds.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: CZ.NIC's Turris 1.x LEDs driver
+
+maintainers:
+  - Pali Rohár <pali@...nel.org>
+
+description:
+  This module adds support for the RGB LEDs found on the front panel of the
+  Turris 1.x routers. There are 8 RGB LEDs that are controlled by CZ.NIC CPLD
+  firmware running on Lattice FPGA. Firmware is open source and available at
+  https://gitlab.nic.cz/turris/hw/turris_cpld/-/blob/master/CZ_NIC_Router_CPLD.v
+
+properties:
+  compatible:
+    const: cznic,turris1x-leds
+
+  reg:
+    description: CPLD address range where LED registers are mapped
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^multi-led@[0-7]$":
+    type: object
+    $ref: leds-class-multicolor.yaml#
+    unevaluatedProperties: false
+
+    properties:
+      reg:
+        minimum: 0
+        maximum: 7
+
+    required:
+      - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/leds/common.h>
+
+    cpld@3,0 {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges = <0x0 0x3 0x0 0x00020000>;
+
+        led-controller@13 {
+            compatible = "cznic,turris1x-leds";
+            reg = <0x13 0x1d>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            multi-led@0 {
+                    reg = <0x0>;
+                    color = <LED_COLOR_ID_RGB>;
+                    function = LED_FUNCTION_WAN;
+            };
+
+            multi-led@1 {
+                    reg = <0x1>;
+                    color = <LED_COLOR_ID_RGB>;
+                    function = LED_FUNCTION_LAN;
+                    function-enumerator = <5>;
+            };
+
+            multi-led@2 {
+                    reg = <0x2>;
+                    color = <LED_COLOR_ID_RGB>;
+                    function = LED_FUNCTION_LAN;
+                    function-enumerator = <4>;
+            };
+
+            multi-led@3 {
+                    reg = <0x3>;
+                    color = <LED_COLOR_ID_RGB>;
+                    function = LED_FUNCTION_LAN;
+                    function-enumerator = <3>;
+            };
+
+            multi-led@4 {
+                    reg = <0x4>;
+                    color = <LED_COLOR_ID_RGB>;
+                    function = LED_FUNCTION_LAN;
+                    function-enumerator = <2>;
+            };
+
+            multi-led@5 {
+                    reg = <0x5>;
+                    color = <LED_COLOR_ID_RGB>;
+                    function = LED_FUNCTION_LAN;
+                    function-enumerator = <1>;
+            };
+
+            multi-led@6 {
+                    reg = <0x6>;
+                    color = <LED_COLOR_ID_RGB>;
+                    function = LED_FUNCTION_WLAN;
+            };
+
+            multi-led@7 {
+                    reg = <0x7>;
+                    color = <LED_COLOR_ID_RGB>;
+                    function = LED_FUNCTION_POWER;
+            };
+        };
+    };
+
+...
-- 
2.20.1

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