> -----Original Message-----
> From: Bjorn Helgaas <helgaas@xxxxxxxxxx>
> Sent: 2022年6月16日 7:16
> To: Hongxing Zhu <hongxing.zhu@xxxxxxx>; Lucas Stach
> <l.stach@xxxxxxxxxxxxxx>; Rob Herring <robh+dt@xxxxxxxxxx>; Mark Brown
> <broonie@xxxxxxxxxx>; Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>; Fabio
> Estevam <festevam@xxxxxxxxx>; Francesco Dolcini
> <francesco.dolcini@xxxxxxxxxxx>
> Cc: linux-pci@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx; kernel@xxxxxxxxxxxxxx; dl-linux-imx
> <linux-imx@xxxxxxx>; Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> Subject: [PATCH v12 05/13] PCI: imx6: Factor out ref clock disable to match
> enable
>
> From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
>
> The PCIe ref clocks are specific to different variants. The enables are already
> split out into imx6_pcie_enable_ref_clk(), but the disables were combined with
> the more generic bus/phy/pcie clock disables in imx6_pcie_clk_disable().
>
> Split out the variant-specific disables into imx6_pcie_disable_ref_clk() to match
> imx6_pcie_enable_ref_clk().
>
> No functional change intended.
>
> Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Acked-by: Richard Zhu <hongxing.zhu@xxxxxxx>
Best Regards
Richard Zhu
> ---
> drivers/pci/controller/dwc/pci-imx6.c | 16 ++++++++++------
> 1 file changed, 10 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/pci/controller/dwc/pci-imx6.c
> b/drivers/pci/controller/dwc/pci-imx6.c
> index 38f208eea2d7..f458461880dc 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -580,12 +580,8 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie
> *imx6_pcie)
> return ret;
> }
>
> -static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie)
> +static void imx6_pcie_disable_ref_clk(struct imx6_pcie *imx6_pcie)
> {
> - clk_disable_unprepare(imx6_pcie->pcie);
> - clk_disable_unprepare(imx6_pcie->pcie_phy);
> - clk_disable_unprepare(imx6_pcie->pcie_bus);
> -
> switch (imx6_pcie->drvdata->variant) {
> case IMX6SX:
> clk_disable_unprepare(imx6_pcie->pcie_inbound_axi);
> @@ -595,8 +591,8 @@ static void imx6_pcie_clk_disable(struct imx6_pcie
> *imx6_pcie)
> IMX7D_GPR12_PCIE_PHY_REFCLK_SEL,
> IMX7D_GPR12_PCIE_PHY_REFCLK_SEL);
> break;
> - case IMX8MQ:
> case IMX8MM:
> + case IMX8MQ:
> clk_disable_unprepare(imx6_pcie->pcie_aux);
> break;
> default:
> @@ -604,6 +600,14 @@ static void imx6_pcie_clk_disable(struct imx6_pcie
> *imx6_pcie)
> }
> }
>
> +static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie) {
> + clk_disable_unprepare(imx6_pcie->pcie);
> + clk_disable_unprepare(imx6_pcie->pcie_phy);
> + clk_disable_unprepare(imx6_pcie->pcie_bus);
> + imx6_pcie_disable_ref_clk(imx6_pcie);
> +}
> +
> static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie) {
> struct device *dev = imx6_pcie->pci->dev;
> --
> 2.25.1
