linux-kernel - Re: [PATCH v14 7/7] riscv: dts: thead: Add PWM fan and thermal control

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Message-ID: <aKjXzyyYd9QneIKf@x1>
Date: Fri, 22 Aug 2025 13:49:19 -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>, 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>,
	Daniel Almeida <daniel.almeida@...labora.com>,
	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
Subject: Re: [PATCH v14 7/7] riscv: dts: thead: Add PWM fan and thermal
 control

On Wed, Aug 20, 2025 at 10:35:42AM +0200, Michal Wilczynski wrote:
> Add Device Tree nodes to enable a PWM controlled fan and it's associated
> thermal management for the Lichee Pi 4A board.
> 
> This enables temperature-controlled active cooling for the Lichee Pi 4A
> board based on SoC temperature.
> 
> Reviewed-by: Drew Fustini <fustini@...nel.org>
> Tested-by: Drew Fustini <fustini@...nel.org>
> Signed-off-by: Michal Wilczynski <m.wilczynski@...sung.com>
> ---
>  arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts | 67 +++++++++++++++++++++++
>  1 file changed, 67 insertions(+)

Do you think it makes sense to coordinate this with the "Initial thermal
management for Lichee Pi 4A board" series [1] from Icenowy?

Thanks,
Drew

[1] https://lore.kernel.org/linux-riscv/20250816093209.2600355-1-uwu@icenowy.me/