全志V3s IIC控制器驱动分析
设备树节点i2c0: i2c@01c2ac00 { compatible = "allwinner,sun6i-a31-i2c"; reg = <0x01c2ac00 0x400>; interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>; clocks = <&ccu CLK_BUS_I2C0>; resets = <&