linux-kernel - [PATCH v2 1/2] regulator: dt-bindings: richtek,rt4801: use existing ena

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Date:   Sat, 23 Apr 2022 20:14:18 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        ChiYuan Huang <cy_huang@...htek.com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Rob Herring <robh@...nel.org>
Subject: [PATCH v2 1/2] regulator: dt-bindings: richtek,rt4801: use existing ena_gpiod feature

The binding and driver duplicated regulator core feature of controlling
regulators with GPIOs (of_parse_cb + ena_gpiod) and created its own
enable-gpios property with multiple GPIOs.

This is a less preferred way, because enable-gpios should enable only one
element, not multiple. It also duplicates existing solution.

Deprecate the original 'enable-gpios' and add per-regulator property.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../regulator/richtek,rt4801-regulator.yaml        | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/regulator/richtek,rt4801-regulator.yaml b/Documentation/devicetree/bindings/regulator/richtek,rt4801-regulator.yaml
index 4a4dfa7d9d09..091150c4e579 100644
--- a/Documentation/devicetree/bindings/regulator/richtek,rt4801-regulator.yaml
+++ b/Documentation/devicetree/bindings/regulator/richtek,rt4801-regulator.yaml
@@ -32,8 +32,11 @@ properties:
       If only one gpio is specified, only one gpio used to control ENP/ENM.
       Else if both are specified, DSVP/DSVN could be controlled individually.
       If this property not specified, treat both as always-on regulators.
+
+      Property is deprecated. Use enable-gpios in each regulator.
     minItems: 1
     maxItems: 2
+    deprecated: true
 
 patternProperties:
   "^DSV(P|N)$":
@@ -42,6 +45,14 @@ patternProperties:
     description:
       Properties for single display bias regulator.
 
+    properties:
+      enable-gpios:
+        description:
+          GPIO to use to enable DSVP/DSVN regulator. One GPIO can be configured
+          for controlling both regulators.  If this property not specified for
+          any regulator, treat both as always-on regulators.
+        maxItems: 1
+
 required:
   - compatible
   - reg
@@ -57,19 +68,20 @@ examples:
         rt4801@73 {
             compatible = "richtek,rt4801";
             reg = <0x73>;
-            enable-gpios = <&gpio26 2 0>, <&gpio26 3 0>;
 
             dsvp: DSVP {
                 regulator-name = "rt4801,dsvp";
                 regulator-min-microvolt = <4000000>;
                 regulator-max-microvolt = <6000000>;
                 regulator-boot-on;
+                enable-gpios = <&gpio26 2 0>;
             };
             dsvn: DSVN {
                 regulator-name = "rt4801,dsvn";
                 regulator-min-microvolt = <4000000>;
                 regulator-max-microvolt = <6000000>;
                 regulator-boot-on;
+                enable-gpios = <&gpio26 3 0>;
             };
 
         };
-- 
2.32.0