Patrick Georgi (pgeorgi@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/12443
-gerrit
commit f91f0cc6eb97e8ea228f59554f2af343e9ad7d3e Author: Douglas Anderson dianders@chromium.org Date: Wed Oct 28 09:52:22 2015 -0700
edid: Use a better mode for 640x480
The hardcoded clock value for 640x480 was 25.175 MHz. That's a valid clock to use, but is quite hard to make a non-jittery clock from PLLs. It's much easier to make 25.200 MHz, so let's do that.
The difference between the two modes is 59.9 Hz vs. 60 Hz and it seems better to make a non-jittery 60 Hz rather than a very jittery 59.9 Hz.
BRANCH=none BUG=chrome-os-partner:46256 TEST=Insignia monitor works, so do others
Change-Id: I8aa124d04a90f5dcf9cfa923ed3b693fbb4a06d8 Signed-off-by: Patrick Georgi pgeorgi@chromium.org Original-Commit-Id: e32ce13462101dc60cfed60b6948b7597e93525a Original-Change-Id: Ia9804afe8011a915e4bec306e863d34ad7e27be5 Original-Signed-off-by: Douglas Anderson dianders@chromium.org Original-Reviewed-on: https://chromium-review.googlesource.com/309540 Original-Reviewed-by: Stphane Marchesin marcheu@chromium.org Original-(cherry picked from commit 7f32c9f460991e5e3b947117d6ae4080e630a532) Original-Reviewed-on: https://chromium-review.googlesource.com/309576 Original-Commit-Ready: David Hendricks dhendrix@chromium.org Original-Tested-by: David Hendricks dhendrix@chromium.org Original-Reviewed-by: David Hendricks dhendrix@chromium.org Original-Reviewed-by: Julius Werner jwerner@chromium.org --- src/lib/edid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/lib/edid.c b/src/lib/edid.c index 6663d1c..8c8ab6f 100644 --- a/src/lib/edid.c +++ b/src/lib/edid.c @@ -1003,7 +1003,7 @@ static void dump_breakdown(unsigned char *edid) */ static struct edid_mode known_modes[NUM_KNOWN_MODES] = { [EDID_MODE_640x480_60Hz] = { - .name = "640x480@60Hz", .pixel_clock = 25175, .refresh = 60, + .name = "640x480@60Hz", .pixel_clock = 25200, .refresh = 60, .ha = 640, .hbl = 160, .hso = 16, .hspw = 96, .va = 480, .vbl = 45, .vso = 10, .vspw = 2, .phsync = '-', .pvsync = '-' },