linux-kernel - [PATCH V3 05/21] PCI: tegra194: Apply pinctrl settings for both PCIe RP and EP

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Date:   Fri, 14 Oct 2022 00:08:38 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     <lpieralisi@...nel.org>, <robh@...nel.org>, <kw@...ux.com>,
        <bhelgaas@...gle.com>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>, <kishon@...com>, <vkoul@...nel.org>,
        <mani@...nel.org>, <Sergey.Semin@...kalelectronics.ru>,
        <ffclaire1224@...il.com>
CC:     <linux-pci@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-phy@...ts.infradead.org>,
        <kthota@...dia.com>, <mmaddireddy@...dia.com>, <vidyas@...dia.com>,
        <sagar.tv@...il.com>
Subject: [PATCH V3 05/21] PCI: tegra194: Apply pinctrl settings for both PCIe RP and EP

PERST# and CLKREQ# pinctrl settings should be applied for both root port
and endpoint mode. Move pinctrl_pm_select_default_state() function call
from root port specific configuration function to probe().

Signed-off-by: Vidya Sagar <vidyas@...dia.com>
---
V3:
* None

V2:
* None

 drivers/pci/controller/dwc/pcie-tegra194.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index ae7e0d8f693b..69e11a74a0d7 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1716,12 +1716,6 @@ static int tegra_pcie_config_rp(struct tegra_pcie_dw *pcie)
 		goto fail_pm_get_sync;
 	}
 
-	ret = pinctrl_pm_select_default_state(dev);
-	if (ret < 0) {
-		dev_err(dev, "Failed to configure sideband pins: %d\n", ret);
-		goto fail_pm_get_sync;
-	}
-
 	ret = tegra_pcie_init_controller(pcie);
 	if (ret < 0) {
 		dev_err(dev, "Failed to initialize controller: %d\n", ret);
@@ -2191,6 +2185,19 @@ static int tegra_pcie_dw_probe(struct platform_device *pdev)
 	pp = &pci->pp;
 	pp->num_vectors = MAX_MSI_IRQS;
 
+	ret = pinctrl_pm_select_default_state(dev);
+	if (ret < 0) {
+		const char *level = KERN_ERR;
+
+		if (ret == -EPROBE_DEFER)
+			level = KERN_DEBUG;
+
+		dev_printk(level, dev,
+			   "Failed to configure sideband pins: %d\n",
+			   ret);
+		return ret;
+	}
+
 	ret = tegra_pcie_dw_parse_dt(pcie);
 	if (ret < 0) {
 		const char *level = KERN_ERR;
-- 
2.17.1