On Tue, 20 Dec 2022 14:19:20 -0600, Rob Herring wrote:

On Tue, Dec 20, 2022 at 08:55:26AM +0800, Hal Feng wrote:

quoted

From: Jianlong Huang <redacted>

Add pinctrl bindings for StarFive JH7110 SoC sys pinctrl controller.

Signed-off-by: Jianlong Huang <redacted>
Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
---
 .../pinctrl/starfive,jh7110-sys-pinctrl.yaml  | 142 ++++++++++++++++++
 MAINTAINERS                                   |   3 +-
 .../pinctrl/starfive,jh7110-pinctrl.h         | 115 ++++++++++++++
 3 files changed, 259 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/starfive,jh7110-sys-pinctrl.yaml
 create mode 100644 include/dt-bindings/pinctrl/starfive,jh7110-pinctrl.h

diff --git a/Documentation/devicetree/bindings/pinctrl/starfive,jh7110-sys-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/starfive,jh7110-sys-pinctrl.yaml
new file mode 100644
index 000000000000..60e616af2201
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/starfive,jh7110-sys-pinctrl.yaml

@@ -0,0 +1,142 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/starfive,jh7110-sys-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 Sys Pin Controller
+
+description: |
+  Bindings for the JH7110 RISC-V SoC from StarFive Technology Ltd.
+
+  Out of the SoC's many pins only the ones named PAD_GPIO0 to PAD_GPIO63
+  can be multiplexed and have configurable bias, drive strength,
+  schmitt trigger etc.
+  Some peripherals have their I/O go through the 64 "GPIOs". This also
+  includes a number of other UARTs, I2Cs, SPIs, PWMs etc.
+  All these peripherals are connected to all 64 GPIOs such that
+  any GPIO can be set up to be controlled by any of the peripherals.
+
+maintainers:
+  - Jianlong Huang <jianlong.huang@starfivetech.com>
+
+properties:
+  compatible:
+    const: starfive,jh7110-sys-pinctrl
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 2
+
+  gpio-controller: true
+
+  '#gpio-cells':
+    const: 2
+
+patternProperties:
+  '-[0-9]+$':
+    type: object
+    patternProperties:
+      '-pins$':
+        type: object
+        description: |
+          A pinctrl node should contain at least one subnode representing the
+          pinctrl groups available on the machine. Each subnode will list the
+          pins it needs, and how they should be configured, with regard to
+          muxer configuration, system signal configuration, pin groups for
+          vin/vout module, pin voltage, mux functions for output, mux functions
+          for output enable, mux functions for input.
+
+        properties:
+          pinmux:
+            description: |
+              The list of GPIOs and their mux settings that properties in the
+              node apply to. This should be set using the GPIOMUX macro.
+            $ref: /schemas/pinctrl/pinmux-node.yaml#/properties/pinmux

Generally, don't reference individual properties. Instead, '-pins$' 
needs a $ref to pinmux-node.yaml.

Sorry for the late reply. '-pins$' miss a $ref to pincfg-node.yaml here. I will
add it in the next version. 'pinmux' is not a property in pincfg-node.yaml, but
a property in pinmux-node.yaml, so need a individual reference.

quoted

+
+          bias-disable: true
+
+          bias-pull-up:
+            type: boolean
+
+          bias-pull-down:
+            type: boolean
+
+          drive-strength:
+            enum: [ 2, 4, 8, 12 ]
+
+          input-enable: true
+
+          input-disable: true
+
+          input-schmitt-enable: true
+
+          input-schmitt-disable: true
+
+          slew-rate:
+            maximum: 1
+

quoted

+        additionalProperties: false
+
+    additionalProperties: false

It's easier to read if you put these at the beginning before a long 
properties section.

Will fix it. Thank you for your feedback.

Best regards,
Hal

quoted

+
+required:
+  - compatible
+  - reg
+  - clocks
+  - interrupts
+  - interrupt-controller
+  - '#interrupt-cells'
+  - gpio-controller
+  - '#gpio-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    gpio@13040000 {
+        compatible = "starfive,jh7110-sys-pinctrl";
+        reg = <0x13040000 0x10000>;
+        clocks = <&syscrg 112>;
+        resets = <&syscrg 2>;
+        interrupts = <86>;
+        interrupt-controller;
+        #interrupt-cells = <2>;
+        gpio-controller;
+        #gpio-cells = <2>;
+
+        uart0-0 {
+            tx-pins {
+                pinmux = <0xff140005>;
+                bias-disable;
+                drive-strength = <12>;
+                input-disable;
+                input-schmitt-disable;
+                slew-rate = <0>;
+            };
+
+            rx-pins {
+                pinmux = <0x0E000406>;
+                bias-pull-up;
+                drive-strength = <2>;
+                input-enable;
+                input-schmitt-enable;
+                slew-rate = <0>;
+            };
+        };
+    };