From: "Maíra Canal" <mcanal@igalia.com>
To: 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>
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,
"Maíra Canal" <mcanal@igalia.com>
Subject: [PATCH v2 2/4] dt-bindings: display: bcm2835-v3d: Add an optional reset line
Date: Tue, 15 Sep 2026 17:51:25 -0300 [thread overview]
Message-ID: <20260915-vc4-reset-control-v2-2-cb3a25b07822@igalia.com> (raw)
In-Reply-To: <20260915-vc4-reset-control-v2-0-cb3a25b07822@igalia.com>
The BCM2835 power management block drives a reset line for the V3D block
that is independent of the graphics power domain, allowing the GPU to be
reset without power-cycling the domain. Expose this reset line in the V3D
binding.
Keep the property optional, as devices like the Broadcom Cygnus don't have
a reset line.
Reviewed-by: Stefan Wahren <wahrenst@gmx.net>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
---
Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml
index c55a8217de25..1063e686647c 100644
--- a/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml
+++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml
@@ -27,6 +27,9 @@ properties:
power-domains:
maxItems: 1
+ resets:
+ maxItems: 1
+
required:
- compatible
- reg
--
2.55.0
next prev parent reply other threads:[~2026-09-15 20:52 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-15 20:51 [PATCH v2 0/4] drm/vc4: Reset the V3D block through the reset controller Maíra Canal
2026-09-15 20:51 ` [PATCH v2 1/4] drm/vc4: Drop the undocumented brcm,vc4-v3d compatible Maíra Canal
2026-09-15 20:51 ` Maíra Canal [this message]
2026-09-18 8:55 ` [PATCH v2 2/4] dt-bindings: display: bcm2835-v3d: Add an optional reset line Krzysztof Kozlowski
2026-09-15 20:51 ` [PATCH v2 3/4] drm/vc4: Use the reset controller to recover from a GPU hang Maíra Canal
2026-09-15 20:51 ` [PATCH v2 4/4] ARM: dts: bcm2835: Add the V3D reset line Maíra Canal
2026-09-18 18:55 ` [PATCH v2 0/4] drm/vc4: Reset the V3D block through the reset controller Maíra Canal
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