diff options
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/p1021_serdes.c | 49 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/config_mpc85xx.h | 4 | ||||
| -rw-r--r-- | drivers/pci/fsl_pci_init.c | 7 | ||||
| -rw-r--r-- | include/pci.h | 1 |
4 files changed, 60 insertions, 1 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/p1021_serdes.c b/arch/powerpc/cpu/mpc85xx/p1021_serdes.c index 457ab5dca..1849c1642 100644 --- a/arch/powerpc/cpu/mpc85xx/p1021_serdes.c +++ b/arch/powerpc/cpu/mpc85xx/p1021_serdes.c @@ -1,5 +1,5 @@ /* - * Copyright 2010 Freescale Semiconductor, Inc. + * Copyright 2010-2011 Freescale Semiconductor, Inc. * * See file CREDITS for list of people who contributed to this * project. @@ -26,6 +26,24 @@ #include <asm/immap_85xx.h> #include <asm/fsl_serdes.h> +typedef struct serdes_85xx { + u32 srdscr0; /* 0x00 - SRDS Control Register 0 */ + u32 srdscr1; /* 0x04 - SRDS Control Register 1 */ + u32 srdscr2; /* 0x08 - SRDS Control Register 2 */ + u32 srdscr3; /* 0x0C - SRDS Control Register 3 */ + u32 srdscr4; /* 0x10 - SRDS Control Register 4 */ +} serdes_85xx_t; +#define FSL_SRDSCR3_EIC0(x) (((x) & 0x1f) << 8) +#define FSL_SRDSCR3_EIC0_MASK FSL_SRDSCR3_EIC0(0x1f) +#define FSL_SRDSCR3_EIC1(x) (((x) & 0x1f) << 0) +#define FSL_SRDSCR3_EIC1_MASK FSL_SRDSCR3_EIC1(0x1f) +#define FSL_SRDSCR4_EIC2(x) (((x) & 0x1f) << 8) +#define FSL_SRDSCR4_EIC2_MASK FSL_SRDSCR4_EIC2(0x1f) +#define FSL_SRDSCR4_EIC3(x) (((x) & 0x1f) << 0) +#define FSL_SRDSCR4_EIC3_MASK FSL_SRDSCR4_EIC3(0x1f) +#define EIC_PCIE 0x13 +#define EIC_SGMII 0x04 + #define SRDS1_MAX_LANES 4 static u32 serdes1_prtcl_map; @@ -45,10 +63,13 @@ int is_serdes_configured(enum srds_prtcl prtcl) void fsl_serdes_init(void) { ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); + serdes_85xx_t *serdes = (void *)CONFIG_SYS_MPC85xx_SERDES1_ADDR; + u32 pordevsr = in_be32(&gur->pordevsr); u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >> MPC85xx_PORDEVSR_IO_SEL_SHIFT; int lane; + u32 mask, val; debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg); @@ -61,4 +82,30 @@ void fsl_serdes_init(void) enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane]; serdes1_prtcl_map |= (1 << lane_prtcl); } + + /* Init SERDES Receiver electrical idle detection control for PCIe */ + + /* Lane 0 is always PCIe 1 */ + mask = FSL_SRDSCR3_EIC0_MASK; + val = FSL_SRDSCR3_EIC0(EIC_PCIE); + + /* Lane 1 */ + if ((serdes1_cfg_tbl[srds_cfg][1] == PCIE1) || + (serdes1_cfg_tbl[srds_cfg][1] == PCIE2)) { + mask |= FSL_SRDSCR3_EIC1_MASK; + val |= FSL_SRDSCR3_EIC1(EIC_PCIE); + } + + /* Handle lanes 0 & 1 */ + clrsetbits_be32(&serdes->srdscr3, mask, val); + + /* Handle lanes 2 & 3 */ + if (srds_cfg == 0x6) { + mask = FSL_SRDSCR4_EIC2_MASK | FSL_SRDSCR4_EIC3_MASK; + val = FSL_SRDSCR4_EIC2(EIC_PCIE) | FSL_SRDSCR4_EIC3(EIC_PCIE); + clrsetbits_be32(&serdes->srdscr4, mask, val); + } + + /* 100 ms delay */ + udelay(100000); } diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h index 22086a0f0..6c16681b7 100644 --- a/arch/powerpc/include/asm/config_mpc85xx.h +++ b/arch/powerpc/include/asm/config_mpc85xx.h @@ -90,12 +90,14 @@ #define CONFIG_MAX_CPUS 1 #define CONFIG_SYS_FSL_NUM_LAWS 12 #define CONFIG_TSECV2 +#define CONFIG_FSL_PCIE_DISABLE_ASPM #define CONFIG_SYS_FSL_SEC_COMPAT 2 #elif defined(CONFIG_P1012) #define CONFIG_MAX_CPUS 1 #define CONFIG_SYS_FSL_NUM_LAWS 12 #define CONFIG_TSECV2 +#define CONFIG_FSL_PCIE_DISABLE_ASPM #define CONFIG_SYS_FSL_SEC_COMPAT 2 #elif defined(CONFIG_P1013) @@ -117,12 +119,14 @@ #define CONFIG_MAX_CPUS 2 #define CONFIG_SYS_FSL_NUM_LAWS 12 #define CONFIG_TSECV2 +#define CONFIG_FSL_PCIE_DISABLE_ASPM #define CONFIG_SYS_FSL_SEC_COMPAT 2 #elif defined(CONFIG_P1021) #define CONFIG_MAX_CPUS 2 #define CONFIG_SYS_FSL_NUM_LAWS 12 #define CONFIG_TSECV2 +#define CONFIG_FSL_PCIE_DISABLE_ASPM #define CONFIG_SYS_FSL_SEC_COMPAT 2 #elif defined(CONFIG_P1022) diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c index 3118b85fa..dc34bd666 100644 --- a/drivers/pci/fsl_pci_init.c +++ b/drivers/pci/fsl_pci_init.c @@ -317,6 +317,13 @@ void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info) temp32 |= 0xf000e; /* set URR, FER, NFER (but not CER) */ pci_hose_write_config_dword(hose, dev, PCI_DCR, temp32); +#if defined(CONFIG_FSL_PCIE_DISABLE_ASPM) + temp32 = 0; + pci_hose_read_config_dword(hose, dev, PCI_LCR, &temp32); + temp32 &= ~0x03; /* Disable ASPM */ + pci_hose_write_config_dword(hose, dev, PCI_LCR, temp32); + udelay(1); +#endif if (pcie_cap == PCI_CAP_ID_EXP) { pci_hose_read_config_word(hose, dev, PCI_LTSSM, <ssm); enabled = ltssm >= PCI_LTSSM_L0; diff --git a/include/pci.h b/include/pci.h index c6b264bdb..1284c427b 100644 --- a/include/pci.h +++ b/include/pci.h @@ -306,6 +306,7 @@ #define PCI_DCR 0x54 /* PCIe Device Control Register */ #define PCI_DSR 0x56 /* PCIe Device Status Register */ #define PCI_LSR 0x5e /* PCIe Link Status Register */ +#define PCI_LCR 0x5c /* PCIe Link Control Register */ #define PCI_LTSSM 0x404 /* PCIe Link Training, Status State Machine */ #define PCI_LTSSM_L0 0x16 /* L0 state */ |