diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/controller/dwc/pci-imx6.c | 15 | ||||
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware.c | 5 | ||||
| -rw-r--r-- | drivers/pci/controller/pcie-apple.c | 3 | ||||
| -rw-r--r-- | drivers/pci/pci-acpi.c | 23 | ||||
| -rw-r--r-- | drivers/pci/probe.c | 7 |
5 files changed, 36 insertions, 17 deletions
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index ea5c06371171..1b6fbf507166 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -48,6 +48,8 @@ #define IMX95_PCIE_SS_RW_REG_0 0xf0 #define IMX95_PCIE_REF_CLKEN BIT(23) #define IMX95_PCIE_PHY_CR_PARA_SEL BIT(9) +#define IMX95_PCIE_SS_RW_REG_1 0xf4 +#define IMX95_PCIE_SYS_AUX_PWR_DET BIT(31) #define IMX95_PE0_GEN_CTRL_1 0x1050 #define IMX95_PCIE_DEVICE_TYPE GENMASK(3, 0) @@ -231,6 +233,19 @@ static unsigned int imx_pcie_grp_offset(const struct imx_pcie *imx_pcie) static int imx95_pcie_init_phy(struct imx_pcie *imx_pcie) { + /* + * ERR051624: The Controller Without Vaux Cannot Exit L23 Ready + * Through Beacon or PERST# De-assertion + * + * When the auxiliary power is not available, the controller + * cannot exit from L23 Ready with beacon or PERST# de-assertion + * when main power is not removed. + * + * Workaround: Set SS_RW_REG_1[SYS_AUX_PWR_DET] to 1. + */ + regmap_set_bits(imx_pcie->iomuxc_gpr, IMX95_PCIE_SS_RW_REG_1, + IMX95_PCIE_SYS_AUX_PWR_DET); + regmap_update_bits(imx_pcie->iomuxc_gpr, IMX95_PCIE_SS_RW_REG_0, IMX95_PCIE_PHY_CR_PARA_SEL, diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 97d76d3dc066..be348b341e3c 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -797,22 +797,19 @@ static void dw_pcie_link_set_max_link_width(struct dw_pcie *pci, u32 num_lanes) /* Set link width speed control register */ lwsc = dw_pcie_readl_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL); lwsc &= ~PORT_LOGIC_LINK_WIDTH_MASK; + lwsc |= PORT_LOGIC_LINK_WIDTH_1_LANES; switch (num_lanes) { case 1: plc |= PORT_LINK_MODE_1_LANES; - lwsc |= PORT_LOGIC_LINK_WIDTH_1_LANES; break; case 2: plc |= PORT_LINK_MODE_2_LANES; - lwsc |= PORT_LOGIC_LINK_WIDTH_2_LANES; break; case 4: plc |= PORT_LINK_MODE_4_LANES; - lwsc |= PORT_LOGIC_LINK_WIDTH_4_LANES; break; case 8: plc |= PORT_LINK_MODE_8_LANES; - lwsc |= PORT_LOGIC_LINK_WIDTH_8_LANES; break; default: dev_err(pci->dev, "num-lanes %u: invalid value\n", num_lanes); diff --git a/drivers/pci/controller/pcie-apple.c b/drivers/pci/controller/pcie-apple.c index 32f57b8a6ecb..8f7fc9161760 100644 --- a/drivers/pci/controller/pcie-apple.c +++ b/drivers/pci/controller/pcie-apple.c @@ -584,6 +584,9 @@ static int apple_pcie_setup_port(struct apple_pcie *pcie, list_add_tail(&port->entry, &pcie->ports); init_completion(&pcie->event); + /* In the success path, we keep a reference to np around */ + of_node_get(np); + ret = apple_pcie_port_register_irqs(port); WARN_ON(ret); diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index b78e0e417324..af370628e583 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -1676,19 +1676,24 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) return NULL; root_ops = kzalloc(sizeof(*root_ops), GFP_KERNEL); - if (!root_ops) - goto free_ri; + if (!root_ops) { + kfree(ri); + return NULL; + } ri->cfg = pci_acpi_setup_ecam_mapping(root); - if (!ri->cfg) - goto free_root_ops; + if (!ri->cfg) { + kfree(ri); + kfree(root_ops); + return NULL; + } root_ops->release_info = pci_acpi_generic_release_info; root_ops->prepare_resources = pci_acpi_root_prepare_resources; root_ops->pci_ops = (struct pci_ops *)&ri->cfg->ops->pci_ops; bus = acpi_pci_root_create(root, root_ops, &ri->common, ri->cfg); if (!bus) - goto free_cfg; + return NULL; /* If we must preserve the resource configuration, claim now */ host = pci_find_host_bridge(bus); @@ -1705,14 +1710,6 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) pcie_bus_configure_settings(child); return bus; - -free_cfg: - pci_ecam_free(ri->cfg); -free_root_ops: - kfree(root_ops); -free_ri: - kfree(ri); - return NULL; } void pcibios_add_bus(struct pci_bus *bus) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 364fa2a514f8..e03dcab8c3df 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2508,6 +2508,7 @@ bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l, } EXPORT_SYMBOL(pci_bus_read_dev_vendor_id); +#if IS_ENABLED(CONFIG_PCI_PWRCTRL) static struct platform_device *pci_pwrctrl_create_device(struct pci_bus *bus, int devfn) { struct pci_host_bridge *host = pci_find_host_bridge(bus); @@ -2537,6 +2538,12 @@ static struct platform_device *pci_pwrctrl_create_device(struct pci_bus *bus, in return pdev; } +#else +static struct platform_device *pci_pwrctrl_create_device(struct pci_bus *bus, int devfn) +{ + return NULL; +} +#endif /* * Read the config data for a PCI device, sanity-check it, |