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drm/rockchip: drv: Support HFR1-17

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HFR1-17 requires that when the frl rate in edid
is protocol undefined, hdmitx must output the
maximum supported frl rate.

Change-Id: I61a0152d570e826207f51724578b0113e8818302
Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
This commit is contained in:
Algea Cao
2024-08-12 15:56:52 +08:00
committed by Tao Huang
parent f1408dc64a
commit d9459b1ea9
1 changed files with 9 additions and 5 deletions
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14
drivers/gpu/drm/rockchip/rockchip_drm_drv.c
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@@ -766,6 +766,10 @@ static
void get_max_frl_rate(int max_frl_rate, u8 *max_lanes, u8 *max_rate_per_lane)
{
switch (max_frl_rate) {
case 0:
*max_lanes = 0;
*max_rate_per_lane = 0;
break;
case 1:
*max_lanes = 3;
*max_rate_per_lane = 3;
@@ -787,13 +791,13 @@ void get_max_frl_rate(int max_frl_rate, u8 *max_lanes, u8 *max_rate_per_lane)
*max_rate_per_lane = 10;
break;
case 6:
/*
* According to CTS HFR1-17, if max frl rate in edid is out
* of hdmi spec range, hdmitx should output its max frl rate.
*/
default:
*max_lanes = 4;
*max_rate_per_lane = 12;
break;
case 0:
default:
*max_lanes = 0;
*max_rate_per_lane = 0;
}
}