linux-kernel - [PATCH 0/4] drm/tidss: Fixes data edge sampling

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Message-Id: <20250730-fix-edge-handling-v1-0-1bdfb3fe7922@bootlin.com>
Date: Wed, 30 Jul 2025 19:02:43 +0200
From: Louis Chauvet <louis.chauvet@...tlin.com>
To: Jyri Sarha <jyri.sarha@....fi>, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.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>, Sam Ravnborg <sam@...nborg.org>, 
 Benoit Parrot <bparrot@...com>, Lee Jones <lee@...nel.org>, 
 Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>, 
 Tero Kristo <kristo@...nel.org>
Cc: thomas.petazzoni@...tlin.com, Jyri Sarha <jsarha@...com>, 
 Tomi Valkeinen <tomi.valkeinen@...com>, dri-devel@...ts.freedesktop.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, stable@...r.kernel.org, 
 Louis Chauvet <louis.chauvet@...tlin.com>
Subject: [PATCH 0/4] drm/tidss: Fixes data edge sampling

Currently the driver only configure the data edge sampling partially. The 
AM62 require it to be configured in two distincts registers: one in tidss 
and one in the general device registers.

Introduce a new dt property to link the proper syscon node from the main 
device registers into the tidss driver.

Fixes: 32a1795f57ee ("drm/tidss: New driver for TI Keystone platform Display SubSystem")
---
Cc: stable@...r.kernel.org

Signed-off-by: Louis Chauvet <louis.chauvet@...tlin.com>

---
Louis Chauvet (4):
      dt-bindings: display: ti,am65x-dss: Add clk property for data edge synchronization
      dt-bindings: mfd: syscon: Add ti,am625-dss-clk-ctrl
      arm64: dts: ti: k3-am62-main: Add tidss clk-ctrl property
      drm/tidss: Fix sampling edge configuration

 .../devicetree/bindings/display/ti/ti,am65x-dss.yaml       |  6 ++++++
 Documentation/devicetree/bindings/mfd/syscon.yaml          |  3 ++-
 arch/arm64/boot/dts/ti/k3-am62-main.dtsi                   |  6 ++++++
 drivers/gpu/drm/tidss/tidss_dispc.c                        | 14 ++++++++++++++
 4 files changed, 28 insertions(+), 1 deletion(-)
---
base-commit: 85c23f28905cf20a86ceec3cfd7a0a5572c9eb13
change-id: 20250730-fix-edge-handling-9123f7438910

Best regards,
-- 
Louis Chauvet <louis.chauvet@...tlin.com>