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drm: renesas: rz-du: Make DU reset control optional for RZ/T2H support

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Update the DU CRTC initialisation to request the reset control using
devm_reset_control_get_optional_shared(). On RZ/T2H SoCs the DU block does
not expose a reset line, and treating the reset as mandatory prevents the
driver from probing on those platforms.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Link: https://patch.msgid.link/20260519160825.4082566-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
This commit is contained in:
Lad Prabhakar 2026-05-19 17:08:23 +01:00 committed by Biju Das
parent 4608f1ce7a
commit 62ca607fcb
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.c
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@ -380,7 +380,7 @@ int rzg2l_du_crtc_create(struct rzg2l_du_device *rcdu)
struct drm_plane *primary;
int ret;
rcrtc->rstc = devm_reset_control_get_shared(rcdu->dev, NULL);
rcrtc->rstc = devm_reset_control_get_optional_shared(rcdu->dev, NULL);
if (IS_ERR(rcrtc->rstc)) {
dev_err(rcdu->dev, "can't get cpg reset\n");
return PTR_ERR(rcrtc->rstc);