linux-kernel - [PATCH v4 12/14] drm/imx: dc-lb: Drop initial primary and secondary input selections

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Message-Id: <20251016-imx8-dc-prefetch-v4-12-dfda347cb3c5@nxp.com>
Date: Thu, 16 Oct 2025 14:32:30 +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, Marek Vasut <marek.vasut@...lbox.org>, 
 Liu Ying <victor.liu@....com>, Frank Li <Frank.Li@....com>
Subject: [PATCH v4 12/14] drm/imx: dc-lb: Drop initial primary and
 secondary input selections

It's unnecessary to set initial primary and secondary input selections
because KMS driver would do that when doing atomic commits.  Drop the
selections.  This is needed as a preparation for reading LayerBlend
secondary input 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-lb.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/imx/dc/dc-lb.c b/drivers/gpu/drm/imx/dc/dc-lb.c
index 8622efac3f3d566ee6eeef33d90e2e26899f6502..4776e54439fb3df42075667d6fc2971da590662a 100644
--- a/drivers/gpu/drm/imx/dc/dc-lb.c
+++ b/drivers/gpu/drm/imx/dc/dc-lb.c
@@ -254,8 +254,6 @@ int dc_lb_get_id(struct dc_lb *lb)
 
 void dc_lb_init(struct dc_lb *lb)
 {
-	dc_lb_pec_dynamic_prim_sel(lb, LINK_ID_NONE);
-	dc_lb_pec_dynamic_sec_sel(lb, LINK_ID_NONE);
 	dc_lb_pec_clken(lb, CLKEN_DISABLE);
 	dc_lb_shdldsel(lb, BOTH);
 	dc_lb_shdtoksel(lb, BOTH);

-- 
2.34.1