From 9d9aa7ec7baf62640cd4e1a869746b2356731e93 Mon Sep 17 00:00:00 2001 From: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Date: Mon, 19 Nov 2018 12:03:31 +0100 Subject: [PATCH] dt-bindings: i2c-stm32: SYSCFG Fast Mode Plus support for I2C STM32F7 Append optional bindings to update SYSCFG Fast Mode Plus bits if Fast Mode Plus speed is selected. Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> --- Documentation/devicetree/bindings/i2c/i2c-stm32.txt | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/i2c-stm32.txt b/Documentation/devicetree/bindings/i2c/i2c-stm32.txt index 3b54899666342b..69240e189b01e6 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-stm32.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-stm32.txt @@ -26,6 +26,11 @@ Optional properties : - i2c-scl-falling-time-ns : Only for STM32F7, I2C SCL Falling time for the board (default: 10) I2C Timings are derived from these 2 values +- st,syscfg-fmp: Only for STM32F7, use to set Fast Mode Plus bit within SYSCFG + whether Fast Mode Plus speed is selected by slave. + 1st cell : phandle to syscfg + 2nd cell : register offset within SYSCFG + 3rd cell : register bitmask for FMP bit Example : @@ -53,4 +58,5 @@ Example : clocks = <&rcc 1 CLK_I2C1>; pinctrl-0 = <&i2c1_sda_pin>, <&i2c1_scl_pin>; pinctrl-names = "default"; + st,syscfg-fmp = <&syscfg 0x4 0x1>; }; -- GitLab