linux-kernel - [PATCH v2 2/3] PCI: imx: No-op imx6_pcie_reset

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Message-Id: <20181206073545.10967-3-andrew.smirnov@gmail.com>
Date:   Wed,  5 Dec 2018 23:35:44 -0800
From:   Andrey Smirnov <andrew.smirnov@...il.com>
To:     linux-pci@...r.kernel.org
Cc:     Andrey Smirnov <andrew.smirnov@...il.com>, bhelgaas@...gle.com,
        Fabio Estevam <fabio.estevam@....com>, cphealy@...il.com,
        l.stach@...gutronix.de, Leonard Crestez <leonard.crestez@....com>,
        "A.s. Dong" <aisheng.dong@....com>,
        Richard Zhu <hongxing.zhu@....com>, linux-imx@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/3] PCI: imx: No-op imx6_pcie_reset_phy() on i.MX7D

PCIE PHY IP block on i.MX7D differs from the one used on i.MX6 family,
so none of the code in current implementation of imx6_pcie_reset_phy()
is applicable.

Cc: bhelgaas@...gle.com
Cc: Fabio Estevam <fabio.estevam@....com>
Cc: cphealy@...il.com
Cc: l.stach@...gutronix.de
Cc: Leonard Crestez <leonard.crestez@....com>
Cc: "A.s. Dong" <aisheng.dong@....com>
Cc: Richard Zhu <hongxing.zhu@....com>
Cc: linux-imx@....com
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
Cc: linux-pci@...r.kernel.org
Tested-by: Trent Piepho <tpiepho@...inj.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
---
 drivers/pci/controller/dwc/pci-imx6.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index c140f7987598..3c3002861d25 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -245,6 +245,9 @@ static void imx6_pcie_reset_phy(struct imx6_pcie *imx6_pcie)
 {
 	u32 tmp;
 
+	if (imx6_pcie->variant == IMX7D)
+		return;
+
 	pcie_phy_read(imx6_pcie, PHY_RX_OVRD_IN_LO, &tmp);
 	tmp |= (PHY_RX_OVRD_IN_LO_RX_DATA_EN |
 		PHY_RX_OVRD_IN_LO_RX_PLL_EN);
-- 
2.19.1