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Wed, 23 Jul 2025 00:25:20 -0700 (PDT) From: Langyan Ye To: dianders@chromium.org, neil.armstrong@linaro.org, jessica.zhang@oss.qualcomm.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Langyan Ye Subject: [PATCH v2] drm/panel-edp: Add 50ms disable delay for four panels Date: Wed, 23 Jul 2025 15:25:13 +0800 Message-Id: <20250723072513.2880369-1-yelangyan@huaqin.corp-partner.google.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add 50ms disable delay for NV116WHM-N49, NV122WUM-N41, and MNC207QS1-1 to satisfy T9+T10 timing. Add 50ms disable delay for MNE007JA1-2 as well, since MNE007JA1-2 copies the timing of MNC207QS1-1. Specifically, it should be noted that the MNE007JA1-2 panel was added by someone who did not have the panel documentation, so they simply copied the timing from the MNC207QS1-1 panel. Adding an extra 50 ms of delay should be safe. Fixes: 0547692ac146 ("drm/panel-edp: Add several generic edp panels") Fixes: 50625eab3972 ("drm/edp-panel: Add panel used by T14s Gen6 Snapdragon= ") Signed-off-by: Langyan Ye Reviewed-by: Douglas Anderson --- v2: - Deleted "delay_200_500_e50_d50_p2e200" structure and renamed/replaced "= delay_200_500_e50_p2e200" - Link to v1: https://lore.kernel.org/all/20250722024512.983313-1-yelangy= an@huaqin.corp-partner.google.com/ --- --- drivers/gpu/drm/panel/panel-edp.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/pane= l-edp.c index 09170470b3ef..d0aa602ecc9d 100644 --- a/drivers/gpu/drm/panel/panel-edp.c +++ b/drivers/gpu/drm/panel/panel-edp.c @@ -1736,10 +1736,11 @@ static const struct panel_delay delay_200_500_e50 = =3D { .enable =3D 50, }; =20 -static const struct panel_delay delay_200_500_e50_p2e200 =3D { +static const struct panel_delay delay_200_500_e50_d50_p2e200 =3D { .hpd_absent =3D 200, .unprepare =3D 500, .enable =3D 50, + .disable =3D 50, .prepare_to_enable =3D 200, }; =20 @@ -1941,13 +1942,13 @@ static const struct edp_panel_entry edp_panels[] = =3D { EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"= ), EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a1b, &delay_200_500_e50, "NV133WUM-N63"= ), EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a36, &delay_200_500_e200, "Unknown"), - EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a3e, &delay_200_500_e80, "NV116WHM-N49"= ), + EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a3e, &delay_200_500_e80_d50, "NV116WHM-= N49"), EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"= ), EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"= ), EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ae8, &delay_200_500_e50_p2e80, "NV140WU= M-N41"), EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b09, &delay_200_500_e50_po2e200, "NV140= FHM-NZ"), EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b1e, &delay_200_500_e80, "NE140QDM-N6A"= ), - EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b34, &delay_200_500_e80, "NV122WUM-N41"= ), + EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b34, &delay_200_500_e80_d50, "NV122WUM-= N41"), EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b43, &delay_200_500_e200, "NV140FHM-T09= "), EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b56, &delay_200_500_e80, "NT140FHM-N47"= ), EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b66, &delay_200_500_e80, "NE140WUM-N6G"= ), @@ -1986,8 +1987,8 @@ static const struct edp_panel_entry edp_panels[] =3D { EDP_PANEL_ENTRY('C', 'M', 'N', 0x14e5, &delay_200_500_e80_d50, "N140HGA-E= A1"), EDP_PANEL_ENTRY('C', 'M', 'N', 0x162b, &delay_200_500_e80_d50, "N160JCE-E= LL"), =20 - EDP_PANEL_ENTRY('C', 'S', 'O', 0x1200, &delay_200_500_e50_p2e200, "MNC207= QS1-1"), - EDP_PANEL_ENTRY('C', 'S', 'O', 0x1413, &delay_200_500_e50_p2e200, "MNE007= JA1-2"), + EDP_PANEL_ENTRY('C', 'S', 'O', 0x1200, &delay_200_500_e50_d50_p2e200, "MN= C207QS1-1"), + EDP_PANEL_ENTRY('C', 'S', 'O', 0x1413, &delay_200_500_e50_d50_p2e200, "MN= E007JA1-2"), =20 EDP_PANEL_ENTRY('C', 'S', 'W', 0x1100, &delay_200_500_e80_d50, "MNB601LS1= -1"), EDP_PANEL_ENTRY('C', 'S', 'W', 0x1103, &delay_200_500_e80_d50, "MNB601LS1= -3"), --=20 2.34.1