From 09eacb71f0740dba94345ce452d7c4a2c9cdd47f Mon Sep 17 00:00:00 2001
From: jacqueline <me@jacqueline.id.au>
Date: Tue, 9 Jan 2024 14:17:58 +1100
Subject: bringup r8 muting

---
 src/drivers/gpios.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'src/drivers/gpios.cpp')

diff --git a/src/drivers/gpios.cpp b/src/drivers/gpios.cpp
index e5560665..5c255204 100644
--- a/src/drivers/gpios.cpp
+++ b/src/drivers/gpios.cpp
@@ -37,13 +37,13 @@ static const uint8_t kPortADefault = 0b00111110;
 // 0 - 3.5mm jack detect (active low)
 // 1 - headphone amp power enable
 // 2 - sd card detect
-// 3 - NC
-// 4 - NC
+// 3 - amplifier unmute (revisions < r8)
+// 4 - amplifier mute (revisions >= r8)
 // 5 - NC
 // 6 - NC
 // 7 - NC
 // Default inputs high, amp off.
-static const uint8_t kPortBDefault = 0b00000101;
+static const uint8_t kPortBDefault = 0b00001101;
 
 /*
  * Convenience mehod for packing the port a and b bytes into a single 16 bit
-- 
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