From: Pengyu Luo <mitltlatltl@gmail.com>
To: Rob Clark <robin.clark@oss.qualcomm.com>,
Dmitry Baryshkov <lumag@kernel.org>,
Abhinav Kumar <abhinav.kumar@linux.dev>,
Jessica Zhang <jesszhan0024@gmail.com>,
Sean Paul <sean@poorly.run>,
Marijn Suijten <marijn.suijten@somainline.org>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>
Cc: Pengyu Luo <mitltlatltl@gmail.com>,
linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] drm/msm/dsi: fix bits_per_pclk
Date: Sat, 7 Mar 2026 19:12:48 +0800 [thread overview]
Message-ID: <20260307111250.105772-1-mitltlatltl@gmail.com> (raw)
mipi_dsi_pixel_format_to_bpp return dst bpp not src bpp, dst bpp may
not be the uncompressed data size. use src bpc * 3 to get src bpp,
this aligns with pclk rate calculation.
Fixes: ac47870fd795 ("drm/msm/dsi: fix hdisplay calculation when programming dsi registers")
Signed-off-by: Pengyu Luo <mitltlatltl@gmail.com>
---
drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index e8e83ee61e..7c16216e8b 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1030,7 +1030,7 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
*/
h_total -= hdisplay;
if (wide_bus_enabled)
- bits_per_pclk = mipi_dsi_pixel_format_to_bpp(msm_host->format);
+ bits_per_pclk = dsc->bits_per_component * 3;
else
bits_per_pclk = 24;
--
2.53.0
next reply other threads:[~2026-03-07 11:13 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-07 11:12 Pengyu Luo [this message]
2026-03-07 11:12 ` [PATCH 2/2] drm/msm/dsi: fix hdisplay calculation for CMD mode panel Pengyu Luo
2026-03-29 18:04 ` Marijn Suijten
2026-03-20 1:48 ` [PATCH 1/2] drm/msm/dsi: fix bits_per_pclk Dmitry Baryshkov
2026-03-20 11:11 ` Pengyu Luo
2026-03-27 19:47 ` Dmitry Baryshkov
2026-04-14 10:13 ` Luca Weiss
2026-04-14 18:11 ` Dmitry Baryshkov
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