Thread (10 messages) 10 messages, 2 authors, 2023-08-28

Re: [PATCH v6 1/2] dt-binding: pinctrl: Add NPCM8XX pinctrl and GPIO documentation

From: Tomer Maimon <tmaimon77@gmail.com>
Date: 2023-08-28 10:28:04
Also in: linux-gpio, lkml, openbmc

Hi Krzysztof,

Thanks for your comments

On Mon, 28 Aug 2023 at 10:10, Krzysztof Kozlowski
[off-list ref] wrote:
On 27/08/2023 22:36, Tomer Maimon wrote:
quoted
Added device tree binding documentation for Nuvoton Arbel BMC NPCM8XX
pinmux and GPIO controller.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
quoted
+  '^pin':
+    $ref: pincfg-node.yaml#
+
+    properties:
+      pins:
+        description:
+          A list of pins to configure in certain ways, such as enabling
+          debouncing
What pin names are allowed?
Do you mean to describe all the allowed pin items?
for example:
      items:
        pattern:
'GPIO0/IOX1_DI/SMB6C_SDA/SMB18_SDA|GPIO1/IOX1_LD/SMB6C_SCL/SMB18_SCL'
or
      items:
        pattern: '^GPIO([0-9]|[0-9][0-9]|[1-2][0-4][0-9]|25[0-6])$'

is good enough?
quoted
+
+      bias-disable: true
+
+      bias-pull-up: true
+
+      bias-pull-down: true
+
+      input-enable: true
+
+      output-low: true
+
+      output-high: true
+
+      drive-push-pull: true
+
+      drive-open-drain: true
+
+      input-debounce:
+        description:
+          Debouncing periods in microseconds, one period per interrupt
+          bank found in the controller
+        $ref: /schemas/types.yaml#/definitions/uint32-array
+        minItems: 1
+        maxItems: 4
+
+      slew-rate:
+        description: |
+          0: Low rate
+          1: High rate
+        $ref: /schemas/types.yaml#/definitions/uint32
+        enum: [0, 1]
+
+      drive-strength:
+        enum: [ 0, 1, 2, 4, 8, 12 ]
+
+    additionalProperties: false
+
+allOf:
+  - $ref: pinctrl.yaml#
+
+required:
+  - compatible
+  - ranges
+  - '#address-cells'
+  - '#size-cells'
+  - nuvoton,sysgcr
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/gpio/gpio.h>
+
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      pinctrl: pinctrl@f0800260 {
Nothing improved here. Test your DTS. This is being reported - I checked.
what do you suggest since the pinctrl doesn't have a reg parameter,
maybe pinctrl: pinctrl@0?
BTW, I have run both dt_binding_check and W=1 dtbs_check, and didn't
see an issue related to the pinctrl: pinctrl@f0800260, do I need to
add another flag to see the issue?
quoted
+        compatible = "nuvoton,npcm845-pinctrl";
+        ranges = <0x0 0x0 0xf0010000 0x8000>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        nuvoton,sysgcr = <&gcr>;
+
+        gpio0: gpio@0 {
+          gpio-controller;
+          #gpio-cells = <2>;
+          reg = <0x0 0xB0>;
Keep lowercase hex.
will be done in V7

Best regards,
Krzysztof
Best regards,

Tomer
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