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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>, <cy_huang@richtek.com>
Subject: [PATCH 2/2] regulator: dt-bindings: rtq2208: Add specified fixed LDO VOUT property
Date: Thu, 16 May 2024 17:20:34 +0800
Message-ID: <9c1bbe4b38a4ee5650d888478f1ce2cec2733669.1715846612.git.alina_yu@richtek.com>
In-Reply-To: <cover.1715846612.git.alina_yu@richtek.com>
References: <cover.1715846612.git.alina_yu@richtek.com>
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As the fixed voltage for the LDO is outside the range of the adjustable voltage mode,
the constraints for this scenario are not suitable to represent both modes.
Therefore, A property is added to specify the fixed LDO VOUT.

Examples of fixed LDO VOUT and adjustable LDO VOUT is also added to this version.

Signed-off-by: Alina Yu <alina_yu@richtek.com>
---
 .../devicetree/bindings/regulator/richtek,rtq2208.yaml        | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml b/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml
index 609c066..87accc6 100644
--- a/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml
+++ b/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml
@@ -75,6 +75,12 @@ properties:
         description:
           regulator description for ldo[1-2].
 
+        properties:
+          richtek,fixed-microvolt:
+            description: |
+              This property can be used to set a fixed operating voltage that lies outside
+              the range of the regulator's adjustable mode.
+
 required:
   - compatible
   - reg
@@ -177,6 +183,8 @@ examples:
             };
           };
           ldo1 {
+            /* Fixed LDO VOUT */
+            richtek,fixed-microvolt = <1200000>;
             regulator-min-microvolt = <1200000>;
             regulator-max-microvolt = <1200000>;
             regulator-always-on;
@@ -185,7 +193,8 @@ examples:
             };
           };
           ldo2 {
-            regulator-min-microvolt = <3300000>;
+            /* Adjustable LDO VOUT */
+            regulator-min-microvolt = <1800000>;
             regulator-max-microvolt = <3300000>;
             regulator-always-on;
             regulator-state-mem {
-- 
2.7.4