Re: [PATCH v2 3/4] arm64: dts: nuvoton: Add pinctrl support for ma35d1

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Dear Krzysztof,

Thanks for your review.

On 2023/11/28 下午 07:06, Krzysztof Kozlowski wrote:
On 28/11/2023 11:45, Jacky Huang wrote:
Dear Krzysztof,

Thanks for your review.

On 2023/11/28 下午 05:34, Krzysztof Kozlowski wrote:
On 28/11/2023 09:37, Jacky Huang wrote:
+			gpion: gpio@40040340 {
+				reg = <0x340 0x40>;
+				interrupts = <GIC_SPI  105 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clk GPN_GATE>;
+				gpio-controller;
+				#gpio-cells = <2>;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+			};
+
+			pcfg_default: pin-default {
+				slew-rate = <0>;
+				input-schmitt-disable;
+				bias-disable;
+				power-source = <1>;
+				drive-strength = <17100>;
+			};
It does not look like you tested the DTS against bindings. Please run
`make dtbs_check W=1` (see
Documentation/devicetree/bindings/writing-schema.rst or
https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/
for instructions).

Best regards,
Krzysztof

I forgot to remove 'ma35d1-pinfunc.h' from my local copy.
After remove the '#include <dt-bindings/pinctrl/ma35d1-pinfunc.h>', it
can pass
the `make dtbs_check W=1` check.
I will fix it in the next version.
Really? Then your bindings look wrong. Why do you mix MMIO nodes and
non-MMIO in one device node?

Best regards,
Krzysztof

Yes, it did pass the 'dtbs_check'. I guess the tool does not detect such
issues.
Anyway, I will fix it in the next version.
Hm, I see your bindings indeed allow pin-.* and unit addresses, so it is
the binding issue.

The examples you used as reference - xlnx,zynqmp-pinctrl.yaml and
realtek,rtd1315e-pinctrl.yaml - do not mix these as you do.

I don't understand why do you need them yet. I don't see any populate of
children. There are no compatibles, either.

Which part of your driver uses them exactly?

Best regards,
Krzysztof


I will move the 'pcfg_default: pin-default' from dtsi to dts, like this:

&pinctrl {
    pcfg_default: pin-default {
        slew-rate = <0>;
        input-schmitt-disable;
        bias-disable;
        power-source = <1>;
        drive-strength = <17100>;
    };

    uart-grp {
        pinctrl_uart0: uart0-pins {
            nuvoton,pins = <4 14 1 &pcfg_default>,
                       <4 15 1 &pcfg_default>;
        };

        pinctrl_uart11: uart11-pins {
            nuvoton,pins = <11 0 2 &pcfg_default>,
                       <11 1 2 &pcfg_default>,
                       <11 2 2 &pcfg_default>,
                       <11 3 2 &pcfg_default>;
        };
...

I use the 'pin-' and just intent to define a generic pin configuration, such as the above 'pin-default'.


Best Regards,
Jacky Huang








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