summaryrefslogtreecommitdiff
path: root/drivers/pci/controller/cadence/pci-j721e.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pci/controller/cadence/pci-j721e.c')
-rw-r--r--drivers/pci/controller/cadence/pci-j721e.c33
1 files changed, 11 insertions, 22 deletions
diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c
index 5bc5ab20aa6d..ecd1b0312400 100644
--- a/drivers/pci/controller/cadence/pci-j721e.c
+++ b/drivers/pci/controller/cadence/pci-j721e.c
@@ -477,9 +477,7 @@ static int j721e_pcie_probe(struct platform_device *pdev)
struct j721e_pcie *pcie;
struct cdns_pcie_rc *rc = NULL;
struct cdns_pcie_ep *ep = NULL;
- struct gpio_desc *gpiod;
void __iomem *base;
- struct clk *clk;
u32 num_lanes;
u32 mode;
int ret;
@@ -590,12 +588,12 @@ static int j721e_pcie_probe(struct platform_device *pdev)
switch (mode) {
case PCI_MODE_RC:
- gpiod = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
- if (IS_ERR(gpiod)) {
- ret = dev_err_probe(dev, PTR_ERR(gpiod), "Failed to get reset GPIO\n");
+ pcie->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(pcie->reset_gpio)) {
+ ret = dev_err_probe(dev, PTR_ERR(pcie->reset_gpio),
+ "Failed to get reset GPIO\n");
goto err_get_sync;
}
- pcie->reset_gpio = gpiod;
ret = cdns_pcie_init_phy(dev, cdns_pcie);
if (ret) {
@@ -603,19 +601,13 @@ static int j721e_pcie_probe(struct platform_device *pdev)
goto err_get_sync;
}
- clk = devm_clk_get_optional(dev, "pcie_refclk");
- if (IS_ERR(clk)) {
- ret = dev_err_probe(dev, PTR_ERR(clk), "failed to get pcie_refclk\n");
+ pcie->refclk = devm_clk_get_optional_enabled(dev, "pcie_refclk");
+ if (IS_ERR(pcie->refclk)) {
+ ret = dev_err_probe(dev, PTR_ERR(pcie->refclk),
+ "failed to enable pcie_refclk\n");
goto err_pcie_setup;
}
- ret = clk_prepare_enable(clk);
- if (ret) {
- dev_err_probe(dev, ret, "failed to enable pcie_refclk\n");
- goto err_pcie_setup;
- }
- pcie->refclk = clk;
-
/*
* Section 2.2 of the PCI Express Card Electromechanical
* Specification (Revision 5.1) mandates that the deassertion
@@ -623,16 +615,14 @@ static int j721e_pcie_probe(struct platform_device *pdev)
* This shall ensure that the power and the reference clock
* are stable.
*/
- if (gpiod) {
+ if (pcie->reset_gpio) {
msleep(PCIE_T_PVPERL_MS);
- gpiod_set_value_cansleep(gpiod, 1);
+ gpiod_set_value_cansleep(pcie->reset_gpio, 1);
}
ret = cdns_pcie_host_setup(rc);
- if (ret < 0) {
- clk_disable_unprepare(pcie->refclk);
+ if (ret < 0)
goto err_pcie_setup;
- }
break;
case PCI_MODE_EP:
@@ -679,7 +669,6 @@ static void j721e_pcie_remove(struct platform_device *pdev)
gpiod_set_value_cansleep(pcie->reset_gpio, 0);
- clk_disable_unprepare(pcie->refclk);
cdns_pcie_disable_phy(cdns_pcie);
j721e_pcie_disable_link_irq(pcie);
pm_runtime_put(dev);