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openSUSE:Leap:42.3:Update
drm
0538-drm-bridge-tc358767-filter-out-too-high-mo...
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File 0538-drm-bridge-tc358767-filter-out-too-high-modes.patch of Package drm
From 8d4bfe89aacf5dbe66fa6dd26587c7d11a9f6a7a Mon Sep 17 00:00:00 2001 From: Andrey Gusakov <andrey.gusakov@cogentembedded.com> Date: Tue, 7 Nov 2017 19:56:20 +0300 Subject: [PATCH] drm/bridge: tc358767: filter out too high modes [ Upstream commit 99fc8e963a4c0203dba26a77cf737db6081bca14 ] Pixel clock limitation for DPI is 154 MHz. Do not accept modes with higher pixel clock rate. Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/1510073785-16108-3-git-send-email-andrey.gusakov@cogentembedded.com Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/gpu/drm/bridge/tc358767.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1109,7 +1109,10 @@ static bool tc_bridge_mode_fixup(struct static int tc_connector_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { - /* Accept any mode */ + /* DPI interface clock limitation: upto 154 MHz */ + if (mode->clock > 154000) + return MODE_CLOCK_HIGH; + return MODE_OK; }
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