Messages in this thread | | | From | Tyler Baker <> | Date | Tue, 5 Dec 2017 12:58:32 -0800 | Subject | Re: [PATCH 8/8] PCIe: imx6: imx7d: add support for phy refclk source |
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On Fri, Dec 1, 2017 at 12:21 PM, Fabio Estevam <festevam@gmail.com> wrote: > On Thu, Nov 30, 2017 at 6:14 PM, <tyler@opensourcefoundries.com> wrote: >> From: Tyler Baker <tyler@opensourcefoundries.com> >> >> In the i.MX7D the PCIe PHY can use either externel oscillator or >> internal PLL as a reference clock source. >> Add support for the PHY Reference Clock source including >> device tree property phy-ref-clk. >> External oscillator is used as a default reference clock source. >> >> Signed-off-by: Tyler Baker <tyler@opensourcefoundries.com> >> Signed-off-by: Ilya Ledvich <ilya@compulab.co.il> > > Please submit this one to the PCI list and PCI maintainers.
Ack. Will do.
> > As you are adding a new property you should update > Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt.
I'll add this when I resubmit to the PCI list.
> >> --- >> drivers/pci/dwc/pci-imx6.c | 8 +++++++- >> 1 file changed, 7 insertions(+), 1 deletion(-) >> >> diff --git adrivers/pci/dwc/pci-imx6.c b/drivers/pci/dwc/pci-imx6.c >> index b734835..e935db4 100644 >> --- a/drivers/pci/dwc/pci-imx6.c >> +++ b/drivers/pci/dwc/pci-imx6.c >> @@ -45,6 +45,7 @@ enum imx6_pcie_variants { >> struct imx6_pcie { >> struct dw_pcie *pci; >> int reset_gpio; >> + u32 phy_refclk; > > Could this be bool instead? > >> bool gpio_active_high; >> struct clk *pcie_bus; >> struct clk *pcie_phy; >> @@ -474,7 +475,7 @@ static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie) >> switch (imx6_pcie->variant) { >> case IMX7D: >> regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, >> - IMX7D_GPR12_PCIE_PHY_REFCLK_SEL, 0); >> + BIT(5), imx6_pcie->phy_refclk ? BIT(5) : 0); >> break; >> case IMX6SX: >> regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, >> @@ -733,6 +734,11 @@ static int imx6_pcie_probe(struct platform_device *pdev) >> if (IS_ERR(pci->dbi_base)) >> return PTR_ERR(pci->dbi_base); >> >> + /* Fetch PHY Reference Clock */ >> + if (of_property_read_u32(node, "phy-ref-clk", &imx6_pcie->phy_refclk)) > > You could use of_property_read_bool instead.
Thanks for the review, I'll switch to to use a bool instead.
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