462 static void serialio_d21_ltr(u32 bar0)  in serialio_d21_ltr()  argument
465 	clrbits_le32(bar0 + SIO_REG_PPR_GEN, SIO_REG_PPR_GEN_LTR_MODE_MASK);  in serialio_d21_ltr()
468 	clrbits_le32(bar0 + SIO_REG_PPR_RST, SIO_REG_PPR_RST_ASSERT);  in serialio_d21_ltr()
471 	setbits_le32(bar0 + SIO_REG_PPR_RST, SIO_REG_PPR_RST_ASSERT);  in serialio_d21_ltr()
474 	writel(0, bar0 + SIO_REG_AUTO_LTR);  in serialio_d21_ltr()
478 static void serialio_i2c_voltage_sel(u32 bar0, uint voltage)  in serialio_i2c_voltage_sel()  argument
480 	clrsetbits_le32(bar0 + SIO_REG_PPR_GEN, SIO_REG_PPR_GEN_VOLTAGE_MASK,  in serialio_i2c_voltage_sel()
528 	u32 bar0, bar1;  in pch_serialio_init()  local
534 	bar0 = dm_pci_read_bar32(dev, 0);  in pch_serialio_init()
535 	if (!bar0)  in pch_serialio_init()
544 	serialio_d21_ltr(bar0);  in pch_serialio_init()
545 	serialio_i2c_voltage_sel(bar0, 1); /* Select 1.8V always */  in pch_serialio_init()
551 	setbits_le32(bar0 + SIO_REG_PPR_CLOCK, SIO_REG_PPR_CLOCK_EN);  in pch_serialio_init()