Add both hardware and software i2c support for mt7622.
Reviewed-by: Simon Glass sjg@chromium.org Signed-off-by: Weijie Gao weijie.gao@mediatek.com --- v3 changes: none v2 changes: none --- arch/arm/dts/mt7622-rfb.dts | 18 ++++++++++++++++++ arch/arm/dts/mt7622.dtsi | 24 ++++++++++++++++++++++++ 2 files changed, 42 insertions(+)
diff --git a/arch/arm/dts/mt7622-rfb.dts b/arch/arm/dts/mt7622-rfb.dts index 30a9137407..b44f19f05a 100644 --- a/arch/arm/dts/mt7622-rfb.dts +++ b/arch/arm/dts/mt7622-rfb.dts @@ -159,6 +159,14 @@ };
}; + + i2c1_pins_default: i2c1-default { + mux { + function = "i2c"; + groups = "i2c1_0"; + }; + }; + };
&snfi { @@ -242,3 +250,13 @@ &u3phy { status = "okay"; }; + +&soft_i2c { + status = "disabled"; +}; + +&i2c1 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c1_pins_default>; + status = "okay"; +}; diff --git a/arch/arm/dts/mt7622.dtsi b/arch/arm/dts/mt7622.dtsi index fb6c1b7154..2d89fa08b4 100644 --- a/arch/arm/dts/mt7622.dtsi +++ b/arch/arm/dts/mt7622.dtsi @@ -424,4 +424,28 @@ status = "disabled"; };
+ soft_i2c: soft_i2c@0 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "i2c-gpio"; + gpios = <&gpio 56 GPIO_ACTIVE_HIGH>, /* SDA */ + <&gpio 55 GPIO_ACTIVE_HIGH>; /* CLK */ + i2c-gpio,delay-us = <5>; + status = "disabled"; + }; + + i2c1: i2c@11008000 { + compatible = "mediatek,mt7622-i2c"; + reg = <0x11008000 0x90>, + <0x11000180 0x80>; + interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_LOW>; + clock-div = <16>; + clocks = <&pericfg CLK_PERI_I2C1_PD>, + <&pericfg CLK_PERI_AP_DMA_PD>; + clock-names = "main", "dma"; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; + };