linux-kernel - [PATCH] dt-bindings: pinctrl: mt8195: Add and use drive-strength-microamp

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Date:   Thu, 30 Jun 2022 15:15:43 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     linus.walleij@...aro.org
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        matthias.bgg@...il.com, sean.wang@...iatek.com,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        nfraprado@...labora.com,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Subject: [PATCH] dt-bindings: pinctrl: mt8195: Add and use drive-strength-microamp

As was already done for MT8192 in commit b52e695324bb ("dt-bindings:
pinctrl: mt8192: Add drive-strength-microamp"), replace the custom
mediatek,drive-strength-adv property with the standardized pinconf
'drive-strength-microamp' one.

Similarly to the mt8192 counterpart, there's no user of property
'mediatek,drive-strength-adv', hence removing it is safe.

Fixes: 69c3d58dc187 ("dt-bindings: pinctrl: mt8195: Add mediatek,drive-strength-adv property")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 .../bindings/pinctrl/pinctrl-mt8195.yaml      | 27 ++-----------------
 1 file changed, 2 insertions(+), 25 deletions(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml b/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml
index b0fea44403e7..85e96a5e1708 100644
--- a/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml
@@ -100,31 +100,8 @@ patternProperties:
           drive-strength:
             enum: [2, 4, 6, 8, 10, 12, 14, 16]
 
-          mediatek,drive-strength-adv:
-            description: |
-              Describe the specific driving setup property.
-              For I2C pins, the existing generic driving setup can only support
-              2/4/6/8/10/12/14/16mA driving. But in specific driving setup, they
-              can support 0.125/0.25/0.5/1mA adjustment. If we enable specific
-              driving setup, the existing generic setup will be disabled.
-              The specific driving setup is controlled by E1E0EN.
-              When E1=0/E0=0, the strength is 0.125mA.
-              When E1=0/E0=1, the strength is 0.25mA.
-              When E1=1/E0=0, the strength is 0.5mA.
-              When E1=1/E0=1, the strength is 1mA.
-              EN is used to enable or disable the specific driving setup.
-              Valid arguments are described as below:
-              0: (E1, E0, EN) = (0, 0, 0)
-              1: (E1, E0, EN) = (0, 0, 1)
-              2: (E1, E0, EN) = (0, 1, 0)
-              3: (E1, E0, EN) = (0, 1, 1)
-              4: (E1, E0, EN) = (1, 0, 0)
-              5: (E1, E0, EN) = (1, 0, 1)
-              6: (E1, E0, EN) = (1, 1, 0)
-              7: (E1, E0, EN) = (1, 1, 1)
-              So the valid arguments are from 0 to 7.
-            $ref: /schemas/types.yaml#/definitions/uint32
-            enum: [0, 1, 2, 3, 4, 5, 6, 7]
+          drive-strength-microamp:
+            enum: [125, 250, 500, 1000]
 
           bias-pull-down:
             oneOf:
-- 
2.35.1