Hi Chukun,
On 2025-03-12 15:35, Chukun Pan wrote:
> Hi,
>
>> The pinctrl-names should be changed to "default" and not "active",
>> something you can fixup or do you want a patch?
>
> Sorry I've been a bit busy this week and forgot to send the v2 patch.
> In rk3528.dtsi, the uart and upcoming i2c nodes do not have pinctrl,
> so I prefer to remove them.
>
>>> Unlike other SoCs, pinctrl-names need to be in "active" state,
>>> I'm not sure about this, but otherwise the pwm-regulator will
>>> not work properly.
>
> BTW, setting the pinctrl of pwm corresponding to pwm-regulator
> to "default" will cause kernel boot suspended.
> Sorry but do you know why?
Not an issue I have seen, do you have any more logs or details? E.g.
what board you use, full regulator node, do you have operating points
defined etc.
I have runtime tested a branch at [1], that use pinctrl-names = default,
have vdd_arm and vdd_logic defined, also an opp table for cpu and gpu.
For E20C there is a commit to enable the vdd_logic, however without gpu
enabled and a mali-supply the pwm-regulator is initialized to
max-microvolt by Linux. Have instead updated U-Boot to initialize the
pwm-regulator's:
```
&vdd_arm {
regulator-init-microvolt = <953000>;
};
&vdd_logic {
regulator-init-microvolt = <900000>;
};
```
[1] https://github.com/Kwiboo/linux-rockchip/commits/next-20250311-rk3528/
Regards,
Jonas
>
> e.g.
> ```
> vdd_arm: regulator-vdd-arm {
> compatible = "pwm-regulator";
> pwms = <&pwm1 0 5000 1>;
> ...
> };
>
> &pwm1 {
> pinctrl-0 = <&pwm1m0_pins>;
> pinctrl-names = "default";
> status = "okay";
> };
> ```
>
> Thanks,
> Chukun
>
> --
> 2.25.1
>
