From: Stefan Wahren <wahrenst@gmx.net>
To: "Maíra Canal" <mcanal@igalia.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Dave Stevenson" <dave.stevenson@raspberrypi.com>,
"Raspberry Pi Kernel Maintenance" <kernel-list@raspberrypi.com>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Florian Fainelli" <florian.fainelli@broadcom.com>,
"Ray Jui" <rjui@broadcom.com>,
"Scott Branden" <sbranden@broadcom.com>,
"Broadcom internal kernel review list"
<bcm-kernel-feedback-list@broadcom.com>
Cc: kernel-dev@igalia.com, dri-devel@lists.freedesktop.org,
devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 4/4] ARM: dts: bcm2835: Add the V3D reset line
Date: Sun, 16 Aug 2026 22:35:53 +0200 [thread overview]
Message-ID: <87f2ee85-e53b-4154-ad5e-60a00b2bdf39@gmx.net> (raw)
In-Reply-To: <20260816-vc4-reset-control-v1-4-896444373716@igalia.com>
Am 16.08.26 um 16:05 schrieb Maíra Canal:
> The PM block exposes a reset line for the V3D block, which the vc4 driver
> uses to reset the GPU when recovering from a hang instead of forcing its
> power domain down. Wire it up in the shared V3D node, covering BCM2835,
> BCM2836 and BCM2837.
>
> BCM2711 already describes the same reset line for its V3D node.
>
> Signed-off-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Stefan Wahren <wahrenst@gmx.net>
> ---
> arch/arm/boot/dts/broadcom/bcm2835-common.dtsi | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/boot/dts/broadcom/bcm2835-common.dtsi b/arch/arm/boot/dts/broadcom/bcm2835-common.dtsi
> index 1e76b290510d..39eea8ce1058 100644
> --- a/arch/arm/boot/dts/broadcom/bcm2835-common.dtsi
> +++ b/arch/arm/boot/dts/broadcom/bcm2835-common.dtsi
> @@ -139,6 +139,7 @@ v3d: v3d@7ec00000 {
> compatible = "brcm,bcm2835-v3d";
> reg = <0x7ec00000 0x1000>;
> interrupts = <1 10>;
> + resets = <&pm BCM2835_RESET_V3D>;
> };
>
> };
>
prev parent reply other threads:[~2026-08-16 20:36 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-16 14:05 [PATCH 0/4] drm/vc4: Reset the V3D block through the reset controller Maíra Canal
2026-08-16 14:05 ` [PATCH 1/4] drm/vc4: Drop the undocumented brcm,vc4-v3d compatible Maíra Canal
2026-08-16 14:13 ` sashiko-bot
2026-08-16 14:05 ` [PATCH 2/4] dt-bindings: display: bcm2835-v3d: Add an optional reset line Maíra Canal
2026-08-16 20:20 ` Stefan Wahren
2026-08-16 14:05 ` [PATCH 3/4] drm/vc4: Use the reset controller to recover from a GPU hang Maíra Canal
2026-08-16 14:22 ` sashiko-bot
2026-08-16 14:05 ` [PATCH 4/4] ARM: dts: bcm2835: Add the V3D reset line Maíra Canal
2026-08-16 14:15 ` sashiko-bot
2026-08-16 20:35 ` Stefan Wahren [this message]
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