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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>
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@ -26,6 +26,11 @@ Optional properties :
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- i2c-scl-falling-time-ns : Only for STM32F7, I2C SCL Falling time for the board
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- i2c-scl-falling-time-ns : Only for STM32F7, I2C SCL Falling time for the board
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(default: 10)
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(default: 10)
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I2C Timings are derived from these 2 values
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I2C Timings are derived from these 2 values
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- st,syscfg-fmp: Only for STM32F7, use to set Fast Mode Plus bit within SYSCFG
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whether Fast Mode Plus speed is selected by slave.
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1st cell : phandle to syscfg
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2nd cell : register offset within SYSCFG
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3rd cell : register bitmask for FMP bit
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Example :
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Example :
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@ -53,4 +58,5 @@ Example :
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clocks = <&rcc 1 CLK_I2C1>;
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clocks = <&rcc 1 CLK_I2C1>;
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pinctrl-0 = <&i2c1_sda_pin>, <&i2c1_scl_pin>;
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pinctrl-0 = <&i2c1_sda_pin>, <&i2c1_scl_pin>;
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pinctrl-names = "default";
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pinctrl-names = "default";
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st,syscfg-fmp = <&syscfg 0x4 0x1>;
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};
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};
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