linux-kernel - Re: [PATCH v5 6/8] riscv: dts: thead: th1520: Add GPU clkgen reset to AON node

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Message-ID: <CAMRc=MeiCT2f902h4viFbue1tejv7EGBvEjdQhOTuqDqEViwRg@mail.gmail.com>
Date: Wed, 18 Jun 2025 15:43:02 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Michal Wilczynski <m.wilczynski@...sung.com>
Cc: 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>, 
	Philipp Zabel <p.zabel@...gutronix.de>, Frank Binns <frank.binns@...tec.com>, 
	Matt Coster <matt.coster@...tec.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>, 
	Ulf Hansson <ulf.hansson@...aro.org>, Marek Szyprowski <m.szyprowski@...sung.com>, 
	linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org, 
	dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v5 6/8] riscv: dts: thead: th1520: Add GPU clkgen reset to
 AON node

On Wed, Jun 18, 2025 at 12:22 PM Michal Wilczynski
<m.wilczynski@...sung.com> wrote:
>
> Add the "gpu-clkgen" reset property to the AON device tree node. This
> allows the AON power domain driver to detect the capability to power
> sequence the GPU and spawn the necessary pwrseq-thead-gpu auxiliary
> driver for managing the GPU's complex power sequence.
>
> This commit also adds the prerequisite
> dt-bindings/reset/thead,th1520-reset.h include to make the
> TH1520_RESET_ID_GPU_CLKGEN available. This include was previously
> dropped during a conflict resolution [1].
>
> Link: https://lore.kernel.org/all/aAvfn2mq0Ksi8DF2@x1/ [1]
>
> Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>
> Signed-off-by: Michal Wilczynski <m.wilczynski@...sung.com>
> ---
>  arch/riscv/boot/dts/thead/th1520.dtsi | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/thead/th1520.dtsi
> index 1db0054c4e093400e9dbebcee5fcfa5b5cae6e32..f3f5db0201ab8c0306d4d63072a1573431e51893 100644
> --- a/arch/riscv/boot/dts/thead/th1520.dtsi
> +++ b/arch/riscv/boot/dts/thead/th1520.dtsi
> @@ -7,6 +7,7 @@
>  #include <dt-bindings/interrupt-controller/irq.h>
>  #include <dt-bindings/clock/thead,th1520-clk-ap.h>
>  #include <dt-bindings/power/thead,th1520-power.h>
> +#include <dt-bindings/reset/thead,th1520-reset.h>
>
>  / {
>         compatible = "thead,th1520";
> @@ -234,6 +235,8 @@ aon: aon {
>                 compatible = "thead,th1520-aon";
>                 mboxes = <&mbox_910t 1>;
>                 mbox-names = "aon";
> +               resets = <&rst TH1520_RESET_ID_GPU_CLKGEN>;
> +               reset-names = "gpu-clkgen";
>                 #power-domain-cells = <1>;
>         };
>
>
> --
> 2.34.1
>

Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>