I2C_MST_CNTL
writel(val, i2cd->regs + I2C_MST_CNTL);
writel(I2C_MST_CNTL_GEN_START, i2cd->regs + I2C_MST_CNTL);
writel(I2C_MST_CNTL_GEN_STOP, i2cd->regs + I2C_MST_CNTL);
writel(val, i2cd->regs + I2C_MST_CNTL);
ret = readl_poll_timeout(i2cd->regs + I2C_MST_CNTL, val,
val = readl(i2cd->regs + I2C_MST_CNTL);