linux-kernel - [PATCH v3 1/4] dt-bindings: pinctrl: spacemit: convert drive strength to schema format

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Message-Id: <20260102-02-k3-pinctrl-v3-1-30aa104e2847@gentoo.org>
Date: Fri, 02 Jan 2026 15:00:22 +0800
From: Yixun Lan <dlan@...too.org>
To: Linus Walleij <linusw@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: Troy Mitchell <troy.mitchell@...ux.spacemit.com>, 
 linux-gpio@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-riscv@...ts.infradead.org, spacemit@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, Yixun Lan <dlan@...too.org>
Subject: [PATCH v3 1/4] dt-bindings: pinctrl: spacemit: convert drive
 strength to schema format

In order to better extend the pinctrl support for future new SoC, convert
drive strength setting from free form text to more standard schema format.

Signed-off-by: Yixun Lan <dlan@...too.org>
---
 .../devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml     | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml
index d80e88aa07b4..609d7db97822 100644
--- a/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml
@@ -72,10 +72,14 @@ patternProperties:
             enum: [ 0, 1 ]
 
           drive-strength:
-            description: |
-              typical current when output high level.
-              1.8V output: 11, 21, 32, 42 (mA)
-              3.3V output: 7, 10, 13, 16, 19, 23, 26, 29 (mA)
+            description:
+              typical current (in mA) when the output at high level.
+            oneOf:
+              - enum: [ 11, 21, 32, 42 ]
+                description: For K1 SoC, 1.8V voltage output
+
+              - enum: [ 7, 10, 13, 16, 19, 23, 26, 29 ]
+                description: For K1 SoC, 3.3V voltage output
 
           input-schmitt:
             description: |

-- 
2.52.0