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Subject: edid-decode: the 590 MHz limitation for 4:2:0 is for HDMI 2.1 only
Author: Hans Verkuil <hverkuil-ci...@xs4all.nl>
Date: Mon Feb 28 11:11:36 2022 +0100
HDMI 2.0 had no 590 MHz limitation, that was added in 2.1. I still
don't understand why, the spec gives no rationale for this.
In any case, clarify the warning that it is for HDMI 2.1 only (and
presumable future higher versions as well).
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
edid-decode.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/edid-decode.cpp b/edid-decode.cpp
index 2c49dc3cca09..4a90ababb864 100644
--- a/edid-decode.cpp
+++ b/edid-decode.cpp
@@ -626,7 +626,7 @@ bool edid_state::print_timings(const char *prefix, const
struct timings *t,
}
if (t->ycbcr420 && t->pixclk_khz < 590000)
- warn_once("Some YCbCr 4:2:0 timings are invalid for HDMI (which
requires an RGB timings pixel rate >= 590 MHz).\n");
+ warn_once("Some YCbCr 4:2:0 timings are invalid for HDMI 2.1
(which requires an RGB timings pixel rate >= 590 MHz).\n");
if (t->hfp <= 0)
fail("0 or negative horizontal front porch.\n");
if (t->hbp <= 0)
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