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From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>,
	Trent Piepho <tpiepho@impinj.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Chris Healy <cphealy@gmail.com>,
	Lucas Stach <l.stach@pengutronix.de>,
	linux-imx@nxp.com, linux-kernel@vger.kernel.org,
	linux-pci@vger.kernel.org
Subject: [PATCH] PCI: imx6: Don't request "pci_aux" clock on i.MX7
Date: Fri,  1 Mar 2019 00:55:59 -0800
Message-ID: <20190301085559.18736-1-andrew.smirnov@gmail.com> (raw)

The clock in question is not present on i.MX7, so move the code
requesting it into i.MX8MQ-only path.

Fixes: eeb61c4e8530 ("PCI: imx6: Add code to request/control
"pcie_aux" clock for i.MX8MQ")
Reported-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Trent Piepho <tpiepho@impinj.com>
Cc: linux-imx@nxp.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-pci@vger.kernel.org
---
 drivers/pci/controller/dwc/pci-imx6.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 08f1ee050c73..5fe364a9959d 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -1100,8 +1100,14 @@ static int imx6_pcie_probe(struct platform_device *pdev)
 			return PTR_ERR(imx6_pcie->pcie_inbound_axi);
 		}
 		break;
-	case IMX7D:
 	case IMX8MQ:
+		imx6_pcie->pcie_aux = devm_clk_get(dev, "pcie_aux");
+		if (IS_ERR(imx6_pcie->pcie_aux)) {
+			dev_err(dev, "pcie_aux clock source missing or invalid\n");
+			return PTR_ERR(imx6_pcie->pcie_aux);
+		}
+		/* fall through */
+	case IMX7D:
 		if (dbi_base->start == IMX8MQ_PCIE2_BASE_ADDR)
 			imx6_pcie->controller_id = 1;
 
@@ -1118,12 +1124,6 @@ static int imx6_pcie_probe(struct platform_device *pdev)
 			dev_err(dev, "Failed to get PCIE APPS reset control\n");
 			return PTR_ERR(imx6_pcie->apps_reset);
 		}
-
-		imx6_pcie->pcie_aux = devm_clk_get(dev, "pcie_aux");
-		if (IS_ERR(imx6_pcie->pcie_aux)) {
-			dev_err(dev, "pcie_aux clock source missing or invalid\n");
-			return PTR_ERR(imx6_pcie->pcie_aux);
-		}
 		break;
 	default:
 		break;
-- 
2.20.1


             reply index

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-01  8:55 Andrey Smirnov [this message]
2019-03-01 11:32 ` Lorenzo Pieralisi
2019-03-01 19:36 ` Trent Piepho

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