diff options
Diffstat (limited to 'drivers/pci/controller/pcie-rcar-host.c')
| -rw-r--r-- | drivers/pci/controller/pcie-rcar-host.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/pci/controller/pcie-rcar-host.c b/drivers/pci/controller/pcie-rcar-host.c index bf7cc0b6a695..996077ab7cfd 100644 --- a/drivers/pci/controller/pcie-rcar-host.c +++ b/drivers/pci/controller/pcie-rcar-host.c @@ -29,6 +29,7 @@ #include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> +#include <linux/regulator/consumer.h> #include "pcie-rcar.h" @@ -953,14 +954,22 @@ static const struct of_device_id rcar_pcie_of_match[] = { {}, }; +/* Design note 346 from Linear Technology says order is not important. */ +static const char * const rcar_pcie_supplies[] = { + "vpcie1v5", + "vpcie3v3", + "vpcie12v", +}; + static int rcar_pcie_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; + struct pci_host_bridge *bridge; struct rcar_pcie_host *host; struct rcar_pcie *pcie; + unsigned int i; u32 data; int err; - struct pci_host_bridge *bridge; bridge = devm_pci_alloc_host_bridge(dev, sizeof(*host)); if (!bridge) @@ -971,6 +980,13 @@ static int rcar_pcie_probe(struct platform_device *pdev) pcie->dev = dev; platform_set_drvdata(pdev, host); + for (i = 0; i < ARRAY_SIZE(rcar_pcie_supplies); i++) { + err = devm_regulator_get_enable_optional(dev, rcar_pcie_supplies[i]); + if (err < 0 && err != -ENODEV) + return dev_err_probe(dev, err, "failed to enable regulator: %s\n", + rcar_pcie_supplies[i]); + } + pm_runtime_enable(pcie->dev); err = pm_runtime_get_sync(pcie->dev); if (err < 0) { |