linux-kernel - [PATCH v2 11/14] drm/imx: dc-ed: Drop initial source selection

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Message-Id: <20250923-imx8-dc-prefetch-v2-11-5d69dc9ac8b5@nxp.com>
Date: Tue, 23 Sep 2025 10:08:01 +0800
From: Liu Ying <victor.liu@....com>
To: Philipp Zabel <p.zabel@...gutronix.de>, 
 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>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Dmitry Baryshkov <lumag@...nel.org>
Cc: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, Liu Ying <victor.liu@....com>, 
 Frank Li <Frank.Li@....com>
Subject: [PATCH v2 11/14] drm/imx: dc-ed: Drop initial source selection

It's unnecessary to set initial ExtDst source selection because KMS
driver would do that when doing atomic commits.  Drop the selection.
This is needed as a preparation for reading ExtDst source selection
when trying to disable CRTC at boot in an upcoming commit.

Reviewed-by: Frank Li <Frank.Li@....com>
Signed-off-by: Liu Ying <victor.liu@....com>
---
v2:
- Collect Frank's R-b tag.
---
 drivers/gpu/drm/imx/dc/dc-ed.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/imx/dc/dc-ed.c b/drivers/gpu/drm/imx/dc/dc-ed.c
index b514790bb765329295553f89d16ee1167ef411dd..1b141ced57b895c24b6358332cbe5e308dad7c01 100644
--- a/drivers/gpu/drm/imx/dc/dc-ed.c
+++ b/drivers/gpu/drm/imx/dc/dc-ed.c
@@ -203,7 +203,6 @@ static inline void dc_ed_disable_gamma_apply(struct dc_ed *ed)
 
 void dc_ed_init(struct dc_ed *ed)
 {
-	dc_ed_pec_src_sel(ed, LINK_ID_NONE);
 	dc_ed_pec_enable_shden(ed);
 	dc_ed_pec_poweron(ed);
 	dc_ed_pec_sync_mode_single(ed);

-- 
2.34.1