heads/patches/coreboot-4.14/0002-mb-purism-librem_14-set-SA-slew-rate-to-fast-16.patch
Matt DeVillier ffde47133f patches/coreboot-4.14: Add patches for Librem mini, 14
Patches for the Librem Mini (v1/v2) and Librem 14 upstreamed
post-4.14. Fixes some issues with acoustic noise and headphone
jack detection.

Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
2021-10-15 15:11:39 -04:00

31 lines
1.1 KiB
Diff

From 154c2089204962d290860eeecee58165f72868eb Mon Sep 17 00:00:00 2001
From: Matt DeVillier <matt.devillier@puri.sm>
Date: Tue, 18 May 2021 11:07:16 -0500
Subject: [PATCH 1/4] mb/purism/librem_14: set SA slew rate to fast/16
Decrease SA slew rate to match other domains and reduce
high-frequency noise slightly.
Change-Id: I02cd93481f6bfba6249cb338a0e2f47d471a438e
Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
---
.../purism/librem_cnl/variants/librem_14/devicetree.cb | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/mainboard/purism/librem_cnl/variants/librem_14/devicetree.cb b/src/mainboard/purism/librem_cnl/variants/librem_14/devicetree.cb
index f61eb2b60a..6d0eb205e7 100644
--- a/src/mainboard/purism/librem_cnl/variants/librem_14/devicetree.cb
+++ b/src/mainboard/purism/librem_cnl/variants/librem_14/devicetree.cb
@@ -39,7 +39,7 @@ chip soc/intel/cannonlake
register "SlowSlewRateForIa" = "3" # fast/16
register "SlowSlewRateForGt" = "3" # fast/16
- register "SlowSlewRateForSa" = "2" # fast/8
+ register "SlowSlewRateForSa" = "3" # fast/16
register "SlowSlewRateForFivr" = "3" # fast/16
# Power
--
2.30.2