linux-kernel - [PATCH 3/6] PCI: tegra: Add support to configure sideband pins

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Message-ID: <20190826073143.4582-4-vidyas@nvidia.com>
Date:   Mon, 26 Aug 2019 13:01:40 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     <lorenzo.pieralisi@....com>, <bhelgaas@...gle.com>,
        <robh+dt@...nel.org>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>
CC:     <kishon@...com>, <gustavo.pimentel@...opsys.com>,
        <digetx@...il.com>, <mperttunen@...dia.com>,
        <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <kthota@...dia.com>,
        <mmaddireddy@...dia.com>, <vidyas@...dia.com>, <sagar.tv@...il.com>
Subject: [PATCH 3/6] PCI: tegra: Add support to configure sideband pins

Add support to configure sideband signal pins when information is present
in respective controller's device-tree node.

Signed-off-by: Vidya Sagar <vidyas@...dia.com>
---
 drivers/pci/controller/dwc/pcie-tegra194.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index fc0dbeb31d78..8a27b25893c9 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1308,6 +1308,12 @@ static int tegra_pcie_config_rp(struct tegra_pcie_dw *pcie)
 		return ret;
 	}
 
+	ret = pinctrl_pm_select_default_state(pcie->dev);
+	if (ret < 0) {
+		dev_err(pcie->dev, "Failed to configure sideband pins\n");
+		return ret;
+	}
+
 	tegra_pcie_init_controller(pcie);
 
 	pcie->link_state = tegra_pcie_dw_link_up(&pcie->pci);
-- 
2.17.1