From: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
To: dri-devel@lists.freedesktop.org
Cc: andrey.gusakov@cogentembedded.com, cphealy@gmail.com
Subject: [PATCH v3 2/7] drm/bridge: tc358767: filter out too high modes
Date: Tue, 7 Nov 2017 19:56:20 +0300 [thread overview]
Message-ID: <1510073785-16108-3-git-send-email-andrey.gusakov@cogentembedded.com> (raw)
In-Reply-To: <1510073785-16108-1-git-send-email-andrey.gusakov@cogentembedded.com>
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>
---
drivers/gpu/drm/bridge/tc358767.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index d52cd41..948a486 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -1103,7 +1103,10 @@ static bool tc_bridge_mode_fixup(struct drm_bridge *bridge,
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;
}
--
1.7.10.4
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next prev parent reply other threads:[~2017-11-07 16:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20171107165655epcas5p2624324a816baaf76db0739bae64ad87e@epcas5p2.samsung.com>
2017-11-07 16:56 ` [PATCH v3 0/7] drm/bridge: tc358767: fixes and improvements Andrey Gusakov
2017-11-07 16:56 ` [PATCH v3 1/7] drm/bridge: tc358767: do no fail on hi-res displays Andrey Gusakov
2017-11-07 16:56 ` Andrey Gusakov [this message]
2017-11-07 16:56 ` [PATCH v3 3/7] drm/bridge: tc358767: fix DP0_MISC register set Andrey Gusakov
2017-11-07 16:56 ` [PATCH v3 4/7] drm/bridge: tc358767: fix timing calculations Andrey Gusakov
2017-11-07 16:56 ` [PATCH v3 5/7] drm/bridge: tc358767: fix AUXDATAn registers access Andrey Gusakov
2017-11-07 16:56 ` [PATCH v3 6/7] drm/bridge: tc358767: fix 1-lane behavior Andrey Gusakov
2017-11-07 16:56 ` [PATCH v3 7/7] drm/bridge: tc358767: add copyright lines Andrey Gusakov
2017-11-07 17:12 ` Chris Healy
2017-11-29 11:03 ` [PATCH v3 0/7] drm/bridge: tc358767: fixes and improvements Andrzej Hajda
2017-11-29 14:55 ` Andrey Gusakov
2017-11-30 7:20 ` Andrzej Hajda
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