[coreboot-gerrit] New patch to review for coreboot: ca1840e samus: Set MICBIAS1 to 2.970V

[Stefan Reinauer (stefan.reinauer@coreboot.org)]

Stefan Reinauer (stefan.reinauer at coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9499

-gerrit

commit ca1840ea902f9b3e99303490a99802d42f4515c3
Author: Ben Zhang <benzh at chromium.org>
Date:   Fri Nov 21 11:17:53 2014 -0800

    samus: Set MICBIAS1 to 2.970V
    
    The default micbias1 voltage is 1.476V (1.8V * 0.82) which does
    not match what's specified on the schematic. This patch sets
    the voltage to 2.970V (3.3V * 0.90) according to the schematic.
    
    BUG=chrome-os-partner:32953
    BRANCH=samus
    TEST=Set MICBIAS to 2.970V on Samus and verified with a scope
    
    Change-Id: I1ced834a5afe2de3fccf4bcff8ec9c8e5718f60a
    Signed-off-by: Stefan Reinauer <reinauer at chromium.org>
    Original-Commit-Id: 176f9272801a3de5ed6fc05ade06042e2a2c0a5c
    Original-Change-Id: Icdbc1b5f65fe28591d54544372bdc2dacb50e9c1
    Original-Signed-off-by: Ben Zhang <benzh at chromium.org>
    Original-Signed-off-by: Duncan Laurie <dlaurie at chromium.org>
    Original-Reviewed-on: https://chromium-review.googlesource.com/241178
---
 src/mainboard/google/samus/acpi/mainboard.asl | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mainboard/google/samus/acpi/mainboard.asl b/src/mainboard/google/samus/acpi/mainboard.asl
index 54a46d5..287f595 100644
--- a/src/mainboard/google/samus/acpi/mainboard.asl
+++ b/src/mainboard/google/samus/acpi/mainboard.asl
@@ -177,6 +177,7 @@ Scope (\_SB.PCI0.I2C0)
 		Name (_UID, 1)
 		Name (WAKE, 45) /* DSP_INT (use as codec wake) */
 
+		Name (MB1, 1)   /* MICBIAS1 = 2.970V */
 		Name (DCLK, 0)  /* RT5677_DMIC_CLK1 */
 		Name (PCLK, 1)  /* RT5677_PDM_CLK_DIV2 (~3MHz) */
 		Name (IN1, 1)   /* IN1 differential */
@@ -193,6 +194,7 @@ Scope (\_SB.PCI0.I2C0)
 		Name (_DSD, Package () {
 			ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
 			Package () {
+				Package () { "realtek,micbias1", 1 },
 				Package () { "realtek,in1-differential", 1 },
 				Package () { "realtek,in2-differential", 0 },
 				Package () { "realtek,lout1-differential", 1 },