drm: rcar-du: Add quirk for H3 ES1.x pclk workaround

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[ Upstream commit 4f548bc48a ]

rcar_du_crtc.c does a soc_device_match() in
rcar_du_crtc_set_display_timing() to find out if the SoC is H3 ES1.x, and
if so, apply a workaround.

We will need another H3 ES1.x check in the following patch, so rather than
adding more soc_device_match() calls, let's add a rcar_du_device_info
entry for the ES1, and a quirk flag,
RCAR_DU_QUIRK_H3_ES1_PCLK_STABILITY, for the workaround.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Tomi Valkeinen 2023-01-23 12:47:40 +02:00 • committed by Greg Kroah-Hartman

parent 25a6499b1a

commit afc9da1352

3 changed files with 50 additions and 7 deletions

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8

drivers/gpu/drm/rcar-du/rcar_du_crtc.c

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48

drivers/gpu/drm/rcar-du/rcar_du_drv.c

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1

drivers/gpu/drm/rcar-du/rcar_du_drv.h

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