Re: [PATCH RFC 5/6] riscv: dts: thead: Add PVT node

Drew Fustini
2025-05-27T08:00:15Z

On Sat, May 24, 2025 at 11:14:59PM +0200, Michal Wilczynski wrote:
> Add PVT DT node for thermal sensor.
>
> Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com>
> ---
> arch/riscv/boot/dts/thead/th1520.dtsi | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/thead/th1520.dtsi
> index f24e12d7259fabcfbdc2dfa966d759db06684ab4..faf5c3aaf209b24cd99ddc377a88e08a8cce24fe 100644
> --- a/arch/riscv/boot/dts/thead/th1520.dtsi
> +++ b/arch/riscv/boot/dts/thead/th1520.dtsi
> @@ -648,6 +648,17 @@ padctrl_aosys: pinctrl@fffff4a000 {
> thead,pad-group = <1>;
> };
>
> + pvt: pvt@fffff4e000 {
> + compatible = "moortec,mr75203";
> + reg = <0xff 0xfff4e000 0x0 0x80>,
> + <0xff 0xfff4e080 0x0 0x100>,
> + <0xff 0xfff4e180 0x0 0x680>,
> + <0xff 0xfff4e800 0x0 0x600>;
> + reg-names = "common", "ts", "pd", "vm";
> + clocks = <&aonsys_clk>;
> + #thermal-sensor-cells = <1>;
> + };
> +
> gpio@fffff52000 {
> compatible = "snps,dw-apb-gpio";
> reg = <0xff 0xfff52000 0x0 0x1000>;
>
> --
> 2.34.1
>

I found that on my lpi4a that boot while hang after applying this patch.
I think that it is related to clocks as boot finished okay when using
clk_ignore_unused on the kernel cmdline. Do you happen have that in your
kernel cmdline?

I need to investigate further to understand which clocks are causing the
problem.

Thanks,
Drew