From 810c8db7706f40f0436555fdffbaf849dc0a5641 Mon Sep 17 00:00:00 2001
From: Danny <nooges@users.noreply.github.com>
Date: Thu, 20 Jun 2019 01:02:20 -0400
Subject: Set default I2C clock speed to 100kHz for split_common (#6161)

* Set default I2C clock rate for split_common boards to 100kHz

Default from I2C driver is 400kHz.

* Update documentation for setting I2C clock speed
---
 quantum/split_common/post_config.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'quantum')

diff --git a/quantum/split_common/post_config.h b/quantum/split_common/post_config.h
index 0e59df3d0..ff0fc5e19 100644
--- a/quantum/split_common/post_config.h
+++ b/quantum/split_common/post_config.h
@@ -4,6 +4,10 @@
     #define RGBLIGHT_SPLIT
   #endif
 
+  #ifndef F_SCL
+    #define F_SCL 100000UL  // SCL frequency
+  #endif
+
 #else  // use serial
   // When using serial, the user must define RGBLIGHT_SPLIT explicitly
   //  in config.h as needed.
-- 
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