linux-kernel - [PATCH v4 02/11] dt-bindings: pinctrl: mediatek,mt8365-pinctrl: add drive strength property

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Message-Id: <20230203-evk-board-support-v4-2-5cffe66a38c0@baylibre.com>
Date:   Fri, 31 Mar 2023 19:54:46 +0200
From:   Alexandre Mergnat <amergnat@...libre.com>
To:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Chaotian Jing <chaotian.jing@...iatek.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Wenbin Mei <wenbin.mei@...iatek.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Zhiyong Tao <zhiyong.tao@...iatek.com>,
        Bernhard Rosenkränzer <bero@...libre.com>
Cc:     linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-mmc@...r.kernel.org,
        linux-gpio@...r.kernel.org,
        Alexandre Bailon <abailon@...libre.com>,
        Fabien Parent <fparent@...libre.com>,
        Amjad Ouled-Ameur <aouledameur@...libre.com>,
        Alexandre Mergnat <amergnat@...libre.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v4 02/11] dt-bindings: pinctrl: mediatek,mt8365-pinctrl:
 add drive strength property

This SoC is able to drive the following output current:
- 2 mA
- 4 mA
- 6 mA
- 8 mA
- 10 mA
- 12 mA
- 14 mA
- 16 mA

Then drive-strength property is set with enum to reflect its HW capability.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Signed-off-by: Alexandre Mergnat <amergnat@...libre.com>
---
 Documentation/devicetree/bindings/pinctrl/mediatek,mt8365-pinctrl.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/pinctrl/mediatek,mt8365-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/mediatek,mt8365-pinctrl.yaml
index 4ebc7f1caf55..df8e9b32ac2c 100644
--- a/Documentation/devicetree/bindings/pinctrl/mediatek,mt8365-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/mediatek,mt8365-pinctrl.yaml
@@ -99,6 +99,9 @@ patternProperties:
               2: (R1, R0) = (1, 0) which means R1 enabled and R0 disabled.
               3: (R1, R0) = (1, 1) which means R1 enabled and R0 enabled.
 
+          drive-strength:
+            enum: [2, 4, 6, 8, 10, 12, 14, 16]
+
           input-enable: true
 
           input-disable: true

-- 
2.25.1