From 010dd4c8f0129a3b53e322c743ee5b46315dde74 Mon Sep 17 00:00:00 2001
From: Matt DeVillier <matt.devillier@gmail.com>
Date: Mon, 27 Feb 2023 16:40:47 -0600
Subject: ec/google/wilco/acpi/dptf: Fix mutex synclevel

Both Windows and MacOS get cranky if the Mutex synclevel is non-zero,
aborting any Acquire() call with Mutex param that has a non-zero
synclevel.

TEST=build/boot Win11 on google/drallion, verify DPTF driver loaded and
functional.

Change-Id: Ie77e9ed04658b508b2063ae219afcdc0ac465c58
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77279
Reviewed-by: CoolStar <coolstarorganization@gmail.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/ec/google/wilco/acpi/dptf.asl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/ec/google/wilco')

diff --git a/src/ec/google/wilco/acpi/dptf.asl b/src/ec/google/wilco/acpi/dptf.asl
index 1b2bf80c2e..2e865f951f 100644
--- a/src/ec/google/wilco/acpi/dptf.asl
+++ b/src/ec/google/wilco/acpi/dptf.asl
@@ -5,7 +5,7 @@
  */
 
 /* Mutex for EC PAT interface */
-Mutex (PATM, 1)
+Mutex (PATM, 0)
 
 /* Read requested temperature sensor */
 Method (TSRD, 1, Serialized)
-- 
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