linux-kernel - Re:[PATCH v4 0/3] drm: rockchip: vop2: Add VP clock resets support

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Message-ID: <3e8f91fa.8700.1936251b29e.Coremail.andyshrk@163.com>
Date: Mon, 25 Nov 2024 15:55:41 +0800 (CST)
From: "Andy Yan" <andyshrk@....com>
To: "Detlev Casanova" <detlev.casanova@...labora.com>
Cc: linux-kernel@...r.kernel.org, "Sandy Huang" <hjc@...k-chips.com>, 
	Heiko Stübner <heiko@...ech.de>, 
	"Andy Yan" <andy.yan@...k-chips.com>, 
	"David Airlie" <airlied@...il.com>, 
	"Simona Vetter" <simona@...ll.ch>, 
	"Maarten Lankhorst" <maarten.lankhorst@...ux.intel.com>, 
	"Maxime Ripard" <mripard@...nel.org>, 
	"Thomas Zimmermann" <tzimmermann@...e.de>, 
	"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>, 
	"Cristian Ciocaltea" <cristian.ciocaltea@...labora.com>, 
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, 
	linux-rockchip@...ts.infradead.org, kernel@...labora.com, 
	"Algea Cao" <algea.cao@...k-chips.com>
Subject: Re:[PATCH v4 0/3] drm: rockchip: vop2: Add VP clock resets support

Hello Detlev,

At 2024-11-16 00:20:39, "Detlev Casanova" <detlev.casanova@...labora.com> wrote:
>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.

Can you provide some detail about how to reproduce this issue ?
If we can reproduce this issue, we might be able to do a more deep analysis.

>
>This adds support for rk3588(s) based SoCs.
>
>Changes since v3:
>- Rebased on drm-misc-next
>- Reword first patch subject
>- Reorder commits for different trees
>
>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):
>  dt-bindings: display: vop2: Add VP clock resets
>  drm/rockchip: vop2: Add clock resets support
>  arm64: dts: rockchip: Add VOP clock resets for rk3588s
>
> .../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