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mainboard/google/reef: turn off DMIC_CLK_B1 in S0ix 

Wake On Voice stream capture configuration is mono. It is sufficient
to keep DMIC_CLK_A1 on in S0ix; so, turning off DMIC_CLK_B1.
Power saving should be visible in the boards which has more
than one DMIC connected.

BUG=None
BRANCH=None
TEST=WoV and quad channel DMIC capture works

Change-Id: Ic46d4c7b30b945eba47a05d78386f48e4a675a03
Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Reviewed-on: https://review.coreboot.org/19018
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Venkateswarlu V Vinjamuri <venkateswarlu.v.vinjamuri@intel.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
Sathyanarayana Nujella 2017-03-27 13:24:16 -07:00 committed by Martin Roth
parent b4f2b15f05
commit 2e2370075d
1 changed files with 1 additions and 2 deletions
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3
src/mainboard/google/reef/variants/baseboard/gpio.c
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@ -222,8 +222,7 @@ static const struct pad_config gpio_table[] = {
/* DMIC or I2S4 */ /* DMIC or I2S4 */
/* AVS_DMIC_CLK_A1 */ /* AVS_DMIC_CLK_A1 */
PAD_CFG_NF_IOSSTATE(GPIO_79, NATIVE, DEEP, NF1, IGNORE), PAD_CFG_NF_IOSSTATE(GPIO_79, NATIVE, DEEP, NF1, IGNORE),
/* AVS_DMIC_CLK_B1 */ PAD_CFG_NF(GPIO_80, NATIVE, DEEP, NF1), /* AVS_DMIC_CLK_B1 */
PAD_CFG_NF_IOSSTATE(GPIO_80, NATIVE, DEEP, NF1, IGNORE),
PAD_CFG_NF(GPIO_81, NATIVE, DEEP, NF1), /* AVS_DMIC_DATA_1 */ PAD_CFG_NF(GPIO_81, NATIVE, DEEP, NF1), /* AVS_DMIC_DATA_1 */
PAD_CFG_GPI(GPIO_82, DN_20K, DEEP), /* unused -- strap */ PAD_CFG_GPI(GPIO_82, DN_20K, DEEP), /* unused -- strap */
PAD_CFG_NF(GPIO_83, NATIVE, DEEP, NF1), /* AVS_DMIC_DATA_2 */ PAD_CFG_NF(GPIO_83, NATIVE, DEEP, NF1), /* AVS_DMIC_DATA_2 */