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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240524-msm-drm-dsc-dsi-video-upstream-4-v4-2-e61c05b403df@linaro.org> References: <20240524-msm-drm-dsc-dsi-video-upstream-4-v4-0-e61c05b403df@linaro.org> In-Reply-To: <20240524-msm-drm-dsc-dsi-video-upstream-4-v4-0-e61c05b403df@linaro.org> To: Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , Marijn Suijten , David Airlie , Daniel Vetter , Jessica Zhang , Vinod Koul Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Jun Nie X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1716556778; l=1081; i=jun.nie@linaro.org; s=20240403; h=from:subject:message-id; bh=SCnJNIycjKCOU6+DbbjFa7Anywkc1It7tnIXU4WQ6yg=; b=sEk66AQRqgPYNGk32xeRrchV7uu3ZrAvWWbJGODk/QYBOrByjanPmW9jI9kFbdWwYSIY0ltA5 ap1NVCxK4ZmC3cS20S2Fl9I7yKwSQ/K71lMWsa7FlqkOWVPHREINtdu X-Developer-Key: i=jun.nie@linaro.org; a=ed25519; pk=MNiBt/faLPvo+iJoP1hodyY2x6ozVXL8QMptmsKg3cc= data is valid for only half the active window if widebus is enabled Signed-off-by: Jun Nie --- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/= msm/disp/dpu1/dpu_hw_intf.c index 2cf1f8c116b5..3d1bc8fa4ca2 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c @@ -167,6 +167,14 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu= _hw_intf *intf, intf_cfg2 |=3D INTF_CFG2_DATABUS_WIDEN; =20 data_width =3D p->width; + /* + * If widebus is enabled, data is valid for only half the active window + * since the data rate is doubled in this mode. But for the compression + * mode in DP case, the p->width is already adjusted in + * drm_mode_to_intf_timing_params() + */ + if (p->wide_bus_en && !dp_intf) + data_width =3D p->width >> 1; =20 /* TODO: handle DSC+DP case, we only handle DSC+DSI case so far */ if (p->compression_en && !dp_intf) --=20 2.34.1