linux-kernel - [PATCH v6 6/7] PCI: imx6: Pass correct sub mode when calling phy_set_mode

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Message-Id: <20241028-pci_fixup_addr-v6-6-ebebcd8fd4ff@nxp.com>
Date: Mon, 28 Oct 2024 15:06:00 -0400
From: Frank Li <Frank.Li@....com>
To: Rob Herring <robh@...nel.org>, Saravana Kannan <saravanak@...gle.com>, 
 Jingoo Han <jingoohan1@...il.com>, 
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>, 
 Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Krzysztof Wilczyński <kw@...ux.com>, 
 Bjorn Helgaas <bhelgaas@...gle.com>, Richard Zhu <hongxing.zhu@....com>, 
 Lucas Stach <l.stach@...gutronix.de>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-pci@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 imx@...ts.linux.dev, Frank Li <Frank.Li@....com>
Subject: [PATCH v6 6/7] PCI: imx6: Pass correct sub mode when calling
 phy_set_mode_ext()

Fix hardcoding to Root Complex (RC) mode by adding a drvdata mode check.
Pass PHY_MODE_PCIE_EP if the PCI controller operates in Endpoint (EP) mode.

Fixes: 8026f2d8e8a9 ("PCI: imx6: Call common PHY API to set mode, speed, and submode")
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Reviewed-by: Richard Zhu <hongxing.zhu@....com>
Signed-off-by: Frank Li <Frank.Li@....com>
---
Change from v3->v6
- none
Change from v2->v3
- Add mani's review tag
---
 drivers/pci/controller/dwc/pci-imx6.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 533905b3942a1..8102a02a00b38 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -960,7 +960,9 @@ static int imx_pcie_host_init(struct dw_pcie_rp *pp)
 			goto err_clk_disable;
 		}
 
-		ret = phy_set_mode_ext(imx_pcie->phy, PHY_MODE_PCIE, PHY_MODE_PCIE_RC);
+		ret = phy_set_mode_ext(imx_pcie->phy, PHY_MODE_PCIE,
+				       imx_pcie->drvdata->mode == DW_PCIE_EP_TYPE ?
+						PHY_MODE_PCIE_EP : PHY_MODE_PCIE_RC);
 		if (ret) {
 			dev_err(dev, "unable to set PCIe PHY mode\n");
 			goto err_phy_exit;

-- 
2.34.1