linux-kernel - [PATCH v2 1/3] dt-bindings: pinctrl: spacemit: add K3 SoC support

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Message-Id: <20251226-02-k3-pinctrl-v2-1-5172397e6831@gentoo.org>
Date: Fri, 26 Dec 2025 20:58:24 +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 v2 1/3] dt-bindings: pinctrl: spacemit: add K3 SoC support

Add new compatible string for SpacemiT K3 SoC, the pinctrl IP shares
almost same logic with previous K1 generation, but has different register
offset and pin configuration, for example the drive strength and
schmitter trigger settings has been changed.

Signed-off-by: Yixun Lan <dlan@...too.org>
---
 .../devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml     | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml
index d80e88aa07b4..d2cb994e30c1 100644
--- a/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml
@@ -11,7 +11,9 @@ maintainers:
 
 properties:
   compatible:
-    const: spacemit,k1-pinctrl
+    enum:
+      - spacemit,k1-pinctrl
+      - spacemit,k3-pinctrl
 
   reg:
     items:
@@ -74,8 +76,12 @@ patternProperties:
           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)
+              For K1 SoC, the settings show as below:
+                1.8V output: 11, 21, 32, 42 (mA)
+                3.3V output: 7, 10, 13, 16, 19, 23, 26, 29 (mA)
+              For K3 SoC, the settings show as below:
+                1.8V output: 2, 4, 6, 7, 9, 11, 13, 14, 21, 23, 25, 26, 28, 30, 31, 33 (mA)
+                3.3V output: 3, 5, 7, 9, 11, 13, 15, 17, 25, 27, 29, 31, 33, 35, 37, 38 (mA)
 
           input-schmitt:
             description: |

-- 
2.52.0