LPI2C_SCR
u32 scr = readl(lpi2c_imx->base + LPI2C_SCR);
writel(SCR_RST, lpi2c_imx->base + LPI2C_SCR);
writel(0, lpi2c_imx->base + LPI2C_SCR);
writel(SCR_SEN | SCR_FILTEN, lpi2c_imx->base + LPI2C_SCR);
writel(SCR_RST, lpi2c_imx->base + LPI2C_SCR);
writel(0, lpi2c_imx->base + LPI2C_SCR);