From a63147794f18db239bde3189611d251131111414 Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Mon, 16 Oct 2023 09:06:25 +0100 Subject: [PATCH 0673/1085] dts: bcm2712: Set default I2C baudrates to 100kHz The RP1 I2C interfaces were being left with their default clock rates, apparently 400kHz. Signed-off-by: Phil Elwell --- arch/arm/boot/dts/broadcom/bcm2712-rpi-5-b.dts | 2 ++ arch/arm/boot/dts/broadcom/bcm2712-rpi.dtsi | 2 ++ 2 files changed, 4 insertions(+) --- a/arch/arm/boot/dts/broadcom/bcm2712-rpi-5-b.dts +++ b/arch/arm/boot/dts/broadcom/bcm2712-rpi-5-b.dts @@ -250,11 +250,13 @@ i2c0mux: &rp1_gpio {}; i2c_csi_dsi0: &i2c6 { // Note: This is for MIPI0 connector only pinctrl-0 = <&rp1_i2c6_38_39>; pinctrl-names = "default"; + clock-frequency = <100000>; }; i2c_csi_dsi1: &i2c4 { // Note: This is for MIPI1 connector only pinctrl-0 = <&rp1_i2c4_40_41>; pinctrl-names = "default"; + clock-frequency = <100000>; }; i2c_csi_dsi: &i2c_csi_dsi1 { }; // An alias for compatibility --- a/arch/arm/boot/dts/broadcom/bcm2712-rpi.dtsi +++ b/arch/arm/boot/dts/broadcom/bcm2712-rpi.dtsi @@ -204,11 +204,13 @@ uart4: &rp1_uart4 { }; i2c_vc: &i2c0 { // This is pins 27,28 on the header (not MIPI) pinctrl-0 = <&rp1_i2c0_0_1>; pinctrl-names = "default"; + clock-frequency = <100000>; }; i2c_arm: &i2c1 { pinctrl-names = "default"; pinctrl-0 = <&rp1_i2c1_2_3>; + clock-frequency = <100000>; }; &i2c2 {