mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 15:02:32 +00:00
32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
|
From beadd8dfb16c626c2261fc6f8aab935cd7412603 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Maxime Ripard <maxime@cerno.tech>
|
||
|
|
Date: Mon, 11 Jan 2021 15:23:01 +0100
|
||
|
|
Subject: [PATCH] drm/vc4: hdmi: Update the CEC clock divider on HSM
|
||
|
|
rate change
|
||
|
|
|
||
|
|
As part of the enable sequence we might change the HSM clock rate if the
|
||
|
|
pixel rate is different than the one we were already dealing with.
|
||
|
|
|
||
|
|
On the BCM2835 however, the CEC clock derives from the HSM clock so any
|
||
|
|
rate change will need to be reflected in the CEC clock divider to output
|
||
|
|
40kHz.
|
||
|
|
|
||
|
|
Fixes: cd4cb49dc5bb ("drm/vc4: hdmi: Adjust HSM clock rate depending on pixel rate")
|
||
|
|
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
||
|
|
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
|
||
|
|
---
|
||
|
|
drivers/gpu/drm/vc4/vc4_hdmi.c | 2 ++
|
||
|
|
1 file changed, 2 insertions(+)
|
||
|
|
|
||
|
|
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
|
||
|
|
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
|
||
|
|
@@ -801,6 +801,8 @@ static void vc4_hdmi_encoder_pre_crtc_co
|
||
|
|
|
||
|
|
vc4_hdmi_cec_update_clk_div(vc4_hdmi);
|
||
|
|
|
||
|
|
+ vc4_hdmi_cec_update_clk_div(vc4_hdmi);
|
||
|
|
+
|
||
|
|
/*
|
||
|
|
* FIXME: When the pixel freq is 594MHz (4k60), this needs to be setup
|
||
|
|
* at 300MHz.
|