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From: Alina Yu <alina_yu@richtek.com>
To: <lgirdwood@gmail.com>, <broonie@kernel.org>, <robh+dt@kernel.org>,
	<krzysztof.kozlowski+dt@linaro.org>, <conor+dt@kernel.org>
CC: <linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
	<alina_yu@richtek.com>, <johnny_lai@richtek.com>, <cy_huang@richtek.com>
Subject: [PATCH 1/2] regulator: dt-bindings: rtq2208: Add property to get ldo of RTQ2208 is adjustable or not
Date: Mon, 29 Apr 2024 18:16:46 +0800
Message-ID: <1714385807-22393-2-git-send-email-alina_yu@richtek.com>
In-Reply-To: <1714385807-22393-1-git-send-email-alina_yu@richtek.com>
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Since there is no way to check is ldo is adjustable or not.
'richtek,use-fix-dvs' is added for that. user is supposed to know whether vout of ldo is adjustable.

Signed-off-by: Alina Yu <alina_yu@richtek.com>
---
 .../devicetree/bindings/regulator/richtek,rtq2208.yaml         | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml b/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml
index 609c066..3951679 100644
--- a/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml
+++ b/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml
@@ -75,6 +75,14 @@ properties:
         description:
           regulator description for ldo[1-2].
 
+        properties:
+          richtek,use-fix-dvs:
+            type: boolean
+            description: |
+              ldo vout ability is determined by this setting. If it's set, the voltage is unadjustable.
+              There is no risk-free method for software to determine whether the ldo vout is fixed or not.
+              Therefore, it can only be done in this way.
+
 required:
   - compatible
   - reg
@@ -180,6 +188,7 @@ examples:
             regulator-min-microvolt = <1200000>;
             regulator-max-microvolt = <1200000>;
             regulator-always-on;
+            richtek,use-fix-dvs;
             regulator-state-mem {
               regulator-on-in-suspend;
             };
@@ -188,6 +197,7 @@ examples:
             regulator-min-microvolt = <3300000>;
             regulator-max-microvolt = <3300000>;
             regulator-always-on;
+            richtek,use-fix-dvs;
             regulator-state-mem {
               regulator-on-in-suspend;
             };
-- 
2.7.4