linux-kernel - Re: [PATCH v5 8/9] riscv: dts: thead: Add PVT node

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Message-ID: <aGLzK8wTFcWuR4Zv@x1>
Date: Mon, 30 Jun 2025 13:27:23 -0700
From: Drew Fustini <fustini@...nel.org>
To: Michal Wilczynski <m.wilczynski@...sung.com>
Cc: Uwe Kleine-König <ukleinek@...nel.org>,
	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>, Drew Fustini <drew@...7.com>,
	Guo Ren <guoren@...nel.org>, Fu Wei <wefu@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Benno Lossin <lossin@...nel.org>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>, linux-kernel@...r.kernel.org,
	linux-pwm@...r.kernel.org, rust-for-linux@...r.kernel.org,
	linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-clk@...r.kernel.org
Subject: Re: [PATCH v5 8/9] riscv: dts: thead: Add PVT node

On Mon, Jun 23, 2025 at 08:08:56PM +0200, Michal Wilczynski wrote:
> Add PVT DT node for thermal sensor.
> 
> Signed-off-by: Michal Wilczynski <m.wilczynski@...sung.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 26996422e1efe5d2dde68819c2cec1c3fa782a23..bef30780034e06b07aa29b27b0225ea891a4b531 100644
> --- a/arch/riscv/boot/dts/thead/th1520.dtsi
> +++ b/arch/riscv/boot/dts/thead/th1520.dtsi
> @@ -669,6 +669,17 @@ padctrl_aosys: pinctrl@...ff4a000 {
>  			thead,pad-group = <1>;
>  		};
>  
> +		pvt: pvt@...ff4e000 {
> +			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@...ff52000 {
>  			compatible = "snps,dw-apb-gpio";
>  			reg = <0xff 0xfff52000 0x0 0x1000>;
> 
> -- 
> 2.34.1
> 

The PVT sensor is useful for more than just the fan so I'm okay with
taking this even though the PWM driver has yet to be accepted. I have
applied this patch to thead-dt-for-next [1] as commit c31f289 [2].

The required clk driver fix has been applied to thead-clk-for-next [3]
as commit 0370395 [4], so PVT sensor will be able to be tested in next.

Thanks,
Drew

[1] https://github.com/pdp7/linux/commits/thead-dt-for-next/
[2] https://github.com/pdp7/linux/commit/c31f2899eab084b3557e9f9e10fc7898113ef18d
[3] https://github.com/pdp7/linux/commits/thead-clk-for-next/
[4] https://github.com/pdp7/linux/commit/0370395d45ca6dd53bb931978f0e91ac8dd6f1c5