diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pcie_imx.c | 40 |
1 files changed, 36 insertions, 4 deletions
diff --git a/drivers/pci/pcie_imx.c b/drivers/pci/pcie_imx.c index a3982c4553e..fd7e4d499f0 100644 --- a/drivers/pci/pcie_imx.c +++ b/drivers/pci/pcie_imx.c @@ -23,13 +23,20 @@ #define PCI_ACCESS_READ 0 #define PCI_ACCESS_WRITE 1 +#ifdef CONFIG_MX6SX +#define MX6_DBI_ADDR 0x08ffc000 +#define MX6_IO_ADDR 0x08000000 +#define MX6_MEM_ADDR 0x08100000 +#define MX6_ROOT_ADDR 0x08f00000 +#else #define MX6_DBI_ADDR 0x01ffc000 -#define MX6_DBI_SIZE 0x4000 #define MX6_IO_ADDR 0x01000000 -#define MX6_IO_SIZE 0x100000 #define MX6_MEM_ADDR 0x01100000 -#define MX6_MEM_SIZE 0xe00000 #define MX6_ROOT_ADDR 0x01f00000 +#endif +#define MX6_DBI_SIZE 0x4000 +#define MX6_IO_SIZE 0x100000 +#define MX6_MEM_SIZE 0xe00000 #define MX6_ROOT_SIZE 0xfc000 /* PCIe Port Logic registers (memory-mapped) */ @@ -57,6 +64,8 @@ #define PHY_RX_OVRD_IN_LO_RX_DATA_EN (1 << 5) #define PHY_RX_OVRD_IN_LO_RX_PLL_EN (1 << 3) +#define PCIE_PHY_PUP_REQ (1 << 7) + /* iATU registers */ #define PCIE_ATU_VIEWPORT 0x900 #define PCIE_ATU_REGION_INBOUND (0x1 << 31) @@ -421,9 +430,19 @@ static int imx_pcie_write_config(struct pci_controller *hose, pci_dev_t d, static int imx6_pcie_assert_core_reset(void) { struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR; - +#if defined(CONFIG_MX6SX) + struct gpc *gpc_regs = (struct gpc *)GPC_BASE_ADDR; + + /* SSP_EN is not used on MX6SX anymore */ + setbits_le32(&iomuxc_regs->gpr[12], IOMUXC_GPR12_TEST_POWERDOWN); + /* Force PCIe PHY reset */ + setbits_le32(&iomuxc_regs->gpr[5], IOMUXC_GPR5_PCIE_BTNRST); + /* Power up PCIe PHY */ + setbits_le32(&gpc_regs->cntr, PCIE_PHY_PUP_REQ); +#else setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_TEST_POWERDOWN); clrbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_REF_SSP_EN); +#endif return 0; } @@ -441,6 +460,12 @@ static int imx6_pcie_init_phy(void) IOMUXC_GPR12_LOS_LEVEL_MASK, IOMUXC_GPR12_LOS_LEVEL_9); +#ifdef CONFIG_MX6SX + clrsetbits_le32(&iomuxc_regs->gpr[12], + IOMUXC_GPR12_RX_EQ_MASK, + IOMUXC_GPR12_RX_EQ_2); +#endif + writel((0x0 << IOMUXC_GPR8_PCS_TX_DEEMPH_GEN1_OFFSET) | (0x0 << IOMUXC_GPR8_PCS_TX_DEEMPH_GEN2_3P5DB_OFFSET) | (20 << IOMUXC_GPR8_PCS_TX_DEEMPH_GEN2_6DB_OFFSET) | @@ -517,9 +542,16 @@ static int imx6_pcie_deassert_core_reset(void) */ mdelay(50); +#if defined(CONFIG_MX6SX) + /* SSP_EN is not used on MX6SX anymore */ + clrbits_le32(&iomuxc_regs->gpr[12], IOMUXC_GPR12_TEST_POWERDOWN); + /* Clear PCIe PHY reset bit */ + clrbits_le32(&iomuxc_regs->gpr[5], IOMUXC_GPR5_PCIE_BTNRST); +#else /* Enable PCIe */ clrbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_TEST_POWERDOWN); setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_REF_SSP_EN); +#endif imx6_pcie_toggle_reset(); |