the following patch was just integrated into master: commit 8c3ab6a5f1e36ddf2c22abacee47afaddd7d0bb8 Author: Yakir Yang ykk@rock-chips.com Date: Mon Jul 27 08:50:36 2015 -0500
rockchip: rk3288: multiple NPLL rate in pll_para_config
Due to HDMI need to set dclk_rate to 27Mhz, and we can't caclu a suitable config paramters for this rate, so we need to multiple rate unless the vco larger then VCO_MAX.
When NPLL rate multiple to 54MHz, pll_para_config could caclu a right paramters, and I have verify the clock jitter is okay to HDMI output.
Jitter Reports: Dclk Rate NPLL Rate nr/no/nf jitter Margin 27MHz 54MHz 2/10/45 449.0ps +51.0%
BRANCH=None BUG=chrome-os-partner:42946 TEST=Mickey board, show right recovery picture on TV, and 480p clock jitter test passed
Change-Id: Iaa0a6622e63d88918ed465900e630bdf16fde706 Signed-off-by: Patrick Georgi patrick@georgi-clan.de Original-Commit-Id: 59f1552026889f61167cfeaec3def668ba709c10 Original-Signed-off-by: Yakir Yang ykk@rock-chips.com Original-Change-Id: Iab274b41f163d2d61332df13e5091f0b605cb65c Original-Reviewed-on: https://chromium-review.googlesource.com/288416 Original-Commit-Queue: David Hendricks dhendrix@chromium.org Original-Tested-by: David Hendricks dhendrix@chromium.org Original-Reviewed-by: Julius Werner jwerner@chromium.org Original-Reviewed-on: https://chromium-review.googlesource.com/290331 Original-Reviewed-by: David Hendricks dhendrix@chromium.org Reviewed-on: http://review.coreboot.org/11393 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer stefan.reinauer@coreboot.org
See http://review.coreboot.org/11393 for details.
-gerrit