the following patch was just integrated into master: commit 84394616dffac91bcf94423ed02b2877fc2d270f Author: Rizwan Qureshi rizwan.qureshi@intel.com Date: Thu Feb 2 12:23:37 2017 +0530
google/poppy: Set GPIO GPP_D22 high
same change as I49935e659bf67225d3f5db1b06acc2cd046dcd74 this is required for poppy board as well.
GPIO GPP_D22 controls the I2S buffer for isolating the I2S signals when doing GPIO-driven I2S. This needs to be high by default so the DSP can drive these signals, instead of low where it is enabled for GPIO-driven I2S and the DSP cannot drive these signals.
BUG=None BRANCH=None TEST=play test sound in OS over internal speaker
Change-Id: I1695e9198f8f78e9c5ad6df6c1ac073ac1762c6b Signed-off-by: Rizwan Qureshi rizwan.qureshi@intel.com Reviewed-on: https://review.coreboot.org/18282 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin adurbin@chromium.org
See https://review.coreboot.org/18282 for details.
-gerrit