diff mbox series

[v9,4/8] PCI: imx6: Disable iMX6QDL PCIe REF clock when disable PCIe clocks

Message ID 1651801629-30223-5-git-send-email-hongxing.zhu@nxp.com (mailing list archive)
State New, archived
Delegated to: Lorenzo Pieralisi
Headers show
Series PCI: imx6: refine codes and add compliance tests mode support | expand

Commit Message

Hongxing Zhu May 6, 2022, 1:47 a.m. UTC 
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(+)

Comments

Lucas Stach June 8, 2022, 7:18 a.m. UTC | #1 
Am Freitag, dem 06.05.2022 um 09:47 +0800 schrieb Richard Zhu:
> When disable PCIe clocks, disable i.MX6QDL PCIe REF clock too.
> 
> Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>

Reviewed-by: Lucas Stach <l.stach@pengutronix.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 9b0eac64badc..7005a7910003 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -536,6 +536,14 @@ 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;
diff mbox series

Patch

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 9b0eac64badc..7005a7910003 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -536,6 +536,14 @@  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;