From: Krzysztof Kozlowski <krzk@kernel.org>
To: "Maíra Canal" <mcanal@igalia.com>
Cc: Maxime Ripard <mripard@kernel.org>,
Dave Stevenson <dave.stevenson@raspberrypi.com>,
Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>,
Stefan Wahren <wahrenst@gmx.net>, 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>,
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 2/4] dt-bindings: display: bcm2835-v3d: Add an optional reset line
Date: Tue, 18 Aug 2026 11:05:24 +0200 [thread overview]
Message-ID: <20260818-idealistic-chivalrous-sawfish-08ddae@quoll> (raw)
In-Reply-To: <20260816-vc4-reset-control-v1-2-896444373716@igalia.com>
On Sun, Aug 16, 2026 at 11:05:41AM -0300, Maíra Canal wrote:
> The BCM2835 PM block has exposed a reset line for the V3D block since
> commit 670c672608a1 ("soc: bcm: bcm2835-pm: Add support for power domains
This is a reset provider driver, so not really relevant here. Driver
commit would be relevant if it was about consumer who implemented
undocumented ABI. I suggest to drop reference to driver and instead
describe the hardware.
> under a new binding."), which allows the GPU to be reset without
> power-cycling its domain. Document it so that the vc4 driver can use it to
> recover from a GPU hang.
Does every device have it? Cygnus as well?
Best regards,
Krzysztof
next prev parent reply other threads:[~2026-08-18 9:05 UTC|newest]
Thread overview: 13+ 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
2026-08-18 9:07 ` Krzysztof Kozlowski
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
2026-08-18 9:05 ` Krzysztof Kozlowski [this message]
2026-08-18 10:35 ` Maíra Canal
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
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