diff options
Diffstat (limited to 'src/soc/intel/braswell/pcie.c')
| -rw-r--r-- | src/soc/intel/braswell/pcie.c | 34 |
1 files changed, 15 insertions, 19 deletions
diff --git a/src/soc/intel/braswell/pcie.c b/src/soc/intel/braswell/pcie.c index 7ab184fd10..4745be9be9 100644 --- a/src/soc/intel/braswell/pcie.c +++ b/src/soc/intel/braswell/pcie.c @@ -40,8 +40,7 @@ static inline int is_first_port(struct device *dev) static void pcie_init(struct device *dev) { - printk(BIOS_SPEW, "%s/%s (%s)\n", - __FILE__, __func__, dev_name(dev)); + printk(BIOS_SPEW, "%s/%s (%s)\n", __FILE__, __func__, dev_name(dev)); } static const struct reg_script no_dev_behind_port[] = { @@ -86,14 +85,12 @@ static void check_device_present(struct device *dev) static struct device *port1_dev; /* - * The SOC has 4 ROOT ports defined with MAX_ROOT_PORTS_BSW. - * For each port initial assumption is that, each port will have - * devices connected to it. Later we will scan each PORT and if - * the device is not attached to that port we will update - * rootports_in_use. If none of the root port is in use we will - * disable PORT1 otherwise we will keep PORT1 enabled per spec. - * In future if the Soc has more number of PCIe Root ports then - * change MAX_ROOT_PORTS_BSW value accordingly. + * The SOC has 4 ROOT ports defined with MAX_ROOT_PORTS_BSW. For each port initial + * assumption is that, each port will have devices connected to it. Later we will + * scan each PORT and if the device is not attached to that port we will update + * rootports_in_use. If none of the root port is in use we will disable PORT1 + * otherwise we will keep PORT1 enabled per spec. In future if the SoC has more + * number of PCIe Root ports then change MAX_ROOT_PORTS_BSW value accordingly. */ static uint32_t rootports_in_use = MAX_ROOT_PORTS_BSW; @@ -109,9 +106,9 @@ static void check_device_present(struct device *dev) printk(BIOS_DEBUG, "No PCIe device present."); /* - * Defer PORT1 disabling for now. When we are at Last port - * we will check rootports_in_use and disable PORT1 if none - * of the port has any device connected + * Defer PORT1 disabling for now. When we are at Last port we will check + * rootports_in_use and disable PORT1 if none of the ports have any device + * connected to it. */ if (!is_first_port(dev)) { reg_script_run_on_dev(dev, no_dev_behind_port); @@ -119,8 +116,8 @@ static void check_device_present(struct device *dev) } else port1_dev = dev; /* - * If none of the ROOT PORT has devices connected then - * disable PORT1 else keep the PORT1 enable + * If none of the ROOT PORT has devices connected then disable PORT1. + * Else, keep the PORT1 enabled. */ if (!rootports_in_use) { reg_script_run_on_dev(port1_dev, no_dev_behind_port); @@ -136,8 +133,8 @@ static void check_device_present(struct device *dev) static void pcie_enable(struct device *dev) { - printk(BIOS_SPEW, "%s/%s (%s)\n", - __FILE__, __func__, dev_name(dev)); + printk(BIOS_SPEW, "%s/%s (%s)\n", __FILE__, __func__, dev_name(dev)); + if (is_first_port(dev)) { struct soc_intel_braswell_config *config = config_of(dev); uint32_t reg = pci_read_config32(dev, PHYCTL2_IOSFBCTL); @@ -146,8 +143,7 @@ static void pcie_enable(struct device *dev) strpfusecfg = pci_read_config32(dev, STRPFUSECFG); if (config->pcie_wake_enable) - smm_southcluster_save_param( - SMM_SAVE_PARAM_PCIE_WAKE_ENABLE, 1); + smm_southcluster_save_param(SMM_SAVE_PARAM_PCIE_WAKE_ENABLE, 1); } /* Check if device is enabled in strapping. */ |