From: Richard Zhu <hongxing.zhu@nxp.com>
To: l.stach@pengutronix.de, bhelgaas@google.com, broonie@kernel.org,
lorenzo.pieralisi@arm.com, jingoohan1@gmail.com,
festevam@gmail.com, francesco.dolcini@toradex.com
Cc: hongxing.zhu@nxp.com, linux-pci@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kernel@pengutronix.de,
linux-imx@nxp.com
Subject: [PATCH v8 4/8] PCI: imx6: Disable iMX6QDL PCIe REF clock when disable PCIe clocks
Date: Fri, 25 Feb 2022 11:44:23 +0800 [thread overview]
Message-ID: <1645760667-10510-5-git-send-email-hongxing.zhu@nxp.com> (raw)
In-Reply-To: <1645760667-10510-1-git-send-email-hongxing.zhu@nxp.com>
When disable PCIe clocks, disable i.MX6QDL PCIe REF clock too.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
---
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 99fc22d1d55e..0f1b8c873a4a 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -540,6 +540,14 @@ 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
next prev parent reply other threads:[~2022-02-25 3:53 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-25 3:44 [PATCH v8 0/8] PCI: imx6: refine codes and add compliance tests mode support Richard Zhu
2022-02-25 3:44 ` [PATCH v8 1/8] PCI: imx6: Encapsulate the clock enable into one standalone function Richard Zhu
2022-02-25 3:44 ` [PATCH v8 2/8] PCI: imx6: Add the error propagation from host_init Richard Zhu
2022-02-25 3:44 ` [PATCH v8 3/8] PCI: imx6: Move imx6_pcie_clk_disable() earlier Richard Zhu
2022-02-25 3:44 ` Richard Zhu [this message]
2022-02-25 3:44 ` [PATCH v8 5/8] PCI: imx6: Refine the regulator usage Richard Zhu
2022-02-25 9:43 ` Francesco Dolcini
2022-02-28 3:43 ` Hongxing Zhu
2022-03-04 7:45 ` Francesco Dolcini
2022-03-04 8:44 ` Hongxing Zhu
2022-02-25 3:44 ` [PATCH v8 6/8] PCI: dwc: Add dw_pcie_host_ops.host_exit() callback Richard Zhu
2022-04-01 20:43 ` Rob Herring
2022-04-02 3:03 ` Hongxing Zhu
2022-04-04 14:39 ` Rob Herring
2022-04-05 3:15 ` Hongxing Zhu
2022-02-25 3:44 ` [PATCH v8 7/8] PCI: imx6: Disable clocks and regulators after link is down Richard Zhu
2022-02-25 3:44 ` [PATCH v8 8/8] PCI: imx6: Add compliance tests mode support Richard Zhu
2022-04-01 20:26 ` Rob Herring
2022-04-02 3:03 ` Hongxing Zhu
2022-03-14 5:26 ` [PATCH v8 0/8] PCI: imx6: refine codes and add " Hongxing Zhu
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