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Message-Id: <1655189942-12678-5-git-send-email-hongxing.zhu@nxp.com>
Date: Tue, 14 Jun 2022 14:58:58 +0800
From: Richard Zhu <hongxing.zhu@....com>
To: l.stach@...gutronix.de, bhelgaas@...gle.com, robh+dt@...nel.org,
broonie@...nel.org, lorenzo.pieralisi@....com, festevam@...il.com,
francesco.dolcini@...adex.com
Cc: hongxing.zhu@....com, linux-pci@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
kernel@...gutronix.de, linux-imx@....com
Subject: [PATCH v11 4/8] PCI: imx6: Disable iMX6QDL PCIe REF clock when disable PCIe clocks
When disable PCIe clocks, disable i.MX6QDL PCIe REF clock too.
Signed-off-by: Richard Zhu <hongxing.zhu@....com>
Reviewed-by: Lucas Stach <l.stach@...gutronix.de>
---
drivers/pci/controller/dwc/pci-imx6.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 511aedec2cfb..368e14e9cade 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -541,6 +541,14 @@ static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie)
clk_disable_unprepare(imx6_pcie->pcie_bus);
switch (imx6_pcie->drvdata->variant) {
+ case IMX6Q:
+ case IMX6QP:
+ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
+ IMX6Q_GPR1_PCIE_REF_CLK_EN, 0);
+ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
+ IMX6Q_GPR1_PCIE_TEST_PD,
+ IMX6Q_GPR1_PCIE_TEST_PD);
+ break;
case IMX6SX:
clk_disable_unprepare(imx6_pcie->pcie_inbound_axi);
break;
--
2.25.1
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