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drm: renesas: rzg2l_mipi_dsi: Move rzg2l_mipi_dsi_set_display_timing()

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The RZ/G2L hardware manual (Rev. 1.50, May 2025), Section 34.4.2.1,
requires display timings to be set after the HS clock is started. Move
rzg2l_mipi_dsi_set_display_timing() from
rzg2l_mipi_dsi_atomic_pre_enable() to rzg2l_mipi_dsi_atomic_enable(),
placing it after rzg2l_mipi_dsi_start_hs_clock(). Drop the unused ret
variable from rzg2l_mipi_dsi_atomic_pre_enable().

Fixes: 5ce16c169a ("drm: renesas: rz-du: Add atomic_pre_enable")
Fixes: 7a043f978e ("drm: rcar-du: Add RZ/G2L DSI driver")
Cc: stable@vger.kernel.org
Reviewed-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Tested-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/20260330104450.128512-2-biju.das.jz@bp.renesas.com
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
This commit is contained in:
Biju Das 2026-03-30 11:44:44 +01:00
parent 2d1e82f122
commit 5bfa858d53
1 changed files with 10 additions and 6 deletions
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16
drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
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@ -1025,29 +1025,33 @@ static void rzg2l_mipi_dsi_atomic_pre_enable(struct drm_bridge *bridge,
const struct drm_display_mode *mode;
struct drm_connector *connector;
struct drm_crtc *crtc;
int ret;
connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder);
crtc = drm_atomic_get_new_connector_state(state, connector)->crtc;
mode = &drm_atomic_get_new_crtc_state(state, crtc)->adjusted_mode;
ret = rzg2l_mipi_dsi_startup(dsi, mode);
if (ret < 0)
return;
rzg2l_mipi_dsi_set_display_timing(dsi, mode);
rzg2l_mipi_dsi_startup(dsi, mode);
}
static void rzg2l_mipi_dsi_atomic_enable(struct drm_bridge *bridge,
struct drm_atomic_state *state)
{
struct rzg2l_mipi_dsi *dsi = bridge_to_rzg2l_mipi_dsi(bridge);
const struct drm_display_mode *mode;
struct drm_connector *connector;
struct drm_crtc *crtc;
int ret;
ret = rzg2l_mipi_dsi_start_hs_clock(dsi);
if (ret < 0)
goto err_stop;
connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder);
crtc = drm_atomic_get_new_connector_state(state, connector)->crtc;
mode = &drm_atomic_get_new_crtc_state(state, crtc)->adjusted_mode;
rzg2l_mipi_dsi_set_display_timing(dsi, mode);
ret = rzg2l_mipi_dsi_start_video(dsi);
if (ret < 0)
goto err_stop_clock;