From e38165e1c4480abdfd3db0fb049f43f02f1583b7 Mon Sep 17 00:00:00 2001
From: carbon <carbon@milkv.io>
Date: Thu, 7 Sep 2023 14:40:45 +0800
Subject: [PATCH] kernel: change i2c1 frequency from 400K to 100K

Some I2C devices can only operate at a frequency of 100KHz
---
 .../cv1800b_milkv_duo_sd/dts_riscv/cv1800b_milkv_duo_sd.dts  | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/build/boards/cv180x/cv1800b_milkv_duo_sd/dts_riscv/cv1800b_milkv_duo_sd.dts b/build/boards/cv180x/cv1800b_milkv_duo_sd/dts_riscv/cv1800b_milkv_duo_sd.dts
index 25b5d7e83..1f4715487 100644
--- a/build/boards/cv180x/cv1800b_milkv_duo_sd/dts_riscv/cv1800b_milkv_duo_sd.dts
+++ b/build/boards/cv180x/cv1800b_milkv_duo_sd/dts_riscv/cv1800b_milkv_duo_sd.dts
@@ -20,6 +20,11 @@
 	status = "okay";
 };
 
+&i2c1 {
+       status = "okay";
+       clock-frequency = <100000>;
+};
+
 / {
 
 };