linux-kernel - [PATCH v3 0/3] drm: rockchip: vop2: Add VP clock resets support

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Message-ID: <20241108185212.198603-1-detlev.casanova@collabora.com>
Date: Fri,  8 Nov 2024 13:50:38 -0500
From: Detlev Casanova <detlev.casanova@...labora.com>
To: linux-kernel@...r.kernel.org
Cc: Sandy Huang <hjc@...k-chips.com>,
	Heiko Stubner <heiko@...ech.de>,
	Andy Yan <andy.yan@...k-chips.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>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko.stuebner@...rry.de>,
	Sebastian Reichel <sebastian.reichel@...labora.com>,
	Dragan Simic <dsimic@...jaro.org>,
	Alexey Charkov <alchark@...il.com>,
	Jianfeng Liu <liujianfeng1994@...il.com>,
	dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	kernel@...labora.com,
	Detlev Casanova <detlev.casanova@...labora.com>
Subject: [PATCH v3 0/3] drm: rockchip: vop2: Add VP clock resets support

The clock reset must be used when the VOP is configured. Skipping it can
put the VOP in an unknown state where the HDMI signal is either lost or
not matching the selected mode.

This adds support for rk3588(s) based SoCs.

Changes since v2:
- Rebase on latest master
- Add details on how to reproduce the issue

Changes since v1:
- Add AXI and AHB clock resets
- Set maxItems for !rk3588 in vop2 bindings

Detlev Casanova (3):
  vop2: Add clock resets support
  arm64: dts: rockchip: Add VOP clock resets for rk3588s
  dt-bindings: display: vop2: Add VP clock resets

 .../display/rockchip/rockchip-vop2.yaml       | 40 +++++++++++++++++++
 arch/arm64/boot/dts/rockchip/rk3588-base.dtsi | 12 ++++++
 drivers/gpu/drm/rockchip/rockchip_drm_vop2.c  | 30 ++++++++++++++
 3 files changed, 82 insertions(+)

-- 
2.47.0