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PCI: tegra194: Use devm_gpiod_get_optional() to parse "nvidia,refclk-select"

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[ Upstream commit f62bc7917d ]

The GPIO DT property "nvidia,refclk-select", to select the PCIe reference
clock is optional. Use devm_gpiod_get_optional() to get it.

Fixes: c57247f940 ("PCI: tegra: Add support for PCIe endpoint mode in Tegra194")
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Vidya Sagar <vidyas@nvidia.com>
Link: https://patch.msgid.link/20260324190755.1094879-7-mmaddireddy@nvidia.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Vidya Sagar
2026-05-23 13:03:14 +02:00
committed by Greg Kroah-Hartman
parent 997122b965
commit 272e9c4bca
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/pci/controller/dwc/pcie-tegra194.c
+3 -3
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@@ -1197,9 +1197,9 @@ static int tegra_pcie_dw_parse_dt(struct tegra_pcie_dw *pcie)
return err;
}
pcie->pex_refclk_sel_gpiod = devm_gpiod_get(pcie->dev,
"nvidia,refclk-select",
GPIOD_OUT_HIGH);
pcie->pex_refclk_sel_gpiod = devm_gpiod_get_optional(pcie->dev,
"nvidia,refclk-select",
GPIOD_OUT_HIGH);
if (IS_ERR(pcie->pex_refclk_sel_gpiod)) {
int err = PTR_ERR(pcie->pex_refclk_sel_gpiod);
const char *level = KERN_ERR;