diff mbox series

[v3,1/2] dt-bindings: leds: pca995x: Add binding document for PCA995X chips

Message ID 20230705231326.232356-1-marex@denx.de
State Superseded
Headers show
Series [v3,1/2] dt-bindings: leds: pca995x: Add binding document for PCA995X chips | expand

Commit Message

Marek Vasut July 5, 2023, 11:13 p.m. UTC 
The PCA995x chips are I2C controlled LED drivers. Each chip has
up to 16 outputs, each one with an individual 8-bit resolution
PWM for brightness control. Add binding document.

Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Isai Gaspar <isaiezequiel.gaspar@nxp.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Lee Jones <lee@kernel.org>
Cc: Marek Vasut <marex@denx.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-leds@vger.kernel.org
---
V2: Fix the led@[0-9]+ match
V3: Unit addresses for leds@ are hex, add a-f into the glob
---
 .../devicetree/bindings/leds/nxp,pca995x.yaml | 81 +++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/nxp,pca995x.yaml

Comments

Rob Herring (Arm) July 6, 2023, 7:06 p.m. UTC | #1 
On Thu, 06 Jul 2023 01:13:25 +0200, Marek Vasut wrote:
> The PCA995x chips are I2C controlled LED drivers. Each chip has
> up to 16 outputs, each one with an individual 8-bit resolution
> PWM for brightness control. Add binding document.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> ---
> Cc: Conor Dooley <conor+dt@kernel.org>
> Cc: Isai Gaspar <isaiezequiel.gaspar@nxp.com>
> Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
> Cc: Lee Jones <lee@kernel.org>
> Cc: Marek Vasut <marex@denx.de>
> Cc: Pavel Machek <pavel@ucw.cz>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: devicetree@vger.kernel.org
> Cc: linux-leds@vger.kernel.org
> ---
> V2: Fix the led@[0-9]+ match
> V3: Unit addresses for leds@ are hex, add a-f into the glob
> ---
>  .../devicetree/bindings/leds/nxp,pca995x.yaml | 81 +++++++++++++++++++
>  1 file changed, 81 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/leds/nxp,pca995x.yaml
> 

Reviewed-by: Rob Herring <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/leds/nxp,pca995x.yaml b/Documentation/devicetree/bindings/leds/nxp,pca995x.yaml
new file mode 100644
index 0000000000000..654915c1f687f
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/nxp,pca995x.yaml
@@ -0,0 +1,81 @@ 
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/nxp,pca995x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP PCA995x LED controllers
+
+maintainers:
+  - Isai Gaspar <isaiezequiel.gaspar@nxp.com>
+  - Marek Vasut <marex@denx.de>
+
+description:
+  The NXP PCA9952/PCA9955B are programmable LED controllers connected via I2C
+  that can drive 16 separate lines. Each of them can be individually switched
+  on and off, and brightness can be controlled via individual PWM.
+
+  Datasheets are available at
+  https://www.nxp.com/docs/en/data-sheet/PCA9952_PCA9955.pdf
+  https://www.nxp.com/docs/en/data-sheet/PCA9955B.pdf
+
+properties:
+  compatible:
+    enum:
+      - nxp,pca9952
+      - nxp,pca9955b
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^led@[0-9a-f]+$":
+    type: object
+    $ref: common.yaml#
+    unevaluatedProperties: false
+
+    properties:
+      reg:
+        minimum: 0
+        maximum: 15
+
+    required:
+      - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/leds/common.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        led-controller@1 {
+            compatible = "nxp,pca9955b";
+            reg = <0x01>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            led@0 {
+                reg = <0x0>;
+                color = <LED_COLOR_ID_RED>;
+                function = LED_FUNCTION_POWER;
+            };
+
+            led@2 {
+                reg = <0x2>;
+                color = <LED_COLOR_ID_WHITE>;
+                function = LED_FUNCTION_STATUS;
+            };
+        };
+    };
+
+...