[PATCH 1/2] ARM: dts: imx7d: Add node for PCIe PHY

[l.stach@pengutronix.de (Lucas Stach)]

Am Mittwoch, den 18.07.2018, 12:44 -0700 schrieb Trent Piepho:
> There isn't yet any code in the kernel that uses this device's register,
> but there will be some for a PCIe PLL erratum wortkaround.
> 
> This adds the PHY as a new node.??The PCI-e controller node gains a
> phandle property that points to it.??There is no driver for the PHY at
> this point and all the existing code that relates to the PHY is part of
> the PCI-e controller driver (and does not need register access, yet).
> 
> > Cc: Shawn Guo <shawnguo@kernel.org>
> > Cc: Sascha Hauer <kernel@pengutronix.de>
> > Cc: Fabio Estevam <fabio.estevam@nxp.com>
> > Cc: Richard Zhu <hongxing.zhu@nxp.com>
> > Cc: Lucas Stach <l.stach@pengutronix.de>
> > Signed-off-by: Trent Piepho <tpiepho@impinj.com>
> ---
> ?Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt | 11 +++++++++++
> ?arch/arm/boot/dts/imx7d.dtsi?????????????????????????????|??9 +++++++++
> ?2 files changed, 20 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
> index cb33421184a0..c7aeda6878ff 100644
> --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
> +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
> @@ -50,6 +50,7 @@ Additional required properties for imx7d-pcie:
> ?- reset-names: Must contain the following entires:
> > ?	???????- "pciephy"
> > ?	???????- "apps"
> +- fsl,pcie-phy: A phandle to an fsl,imx-pcie-phy node.
> ?
> ?Example:
> ?
> @@ -76,3 +77,13 @@ Example:
> > ?		clocks = <&clks 144>, <&clks 206>, <&clks 189>;
> > ?		clock-names = "pcie", "pcie_bus", "pcie_phy";
> > ?	};
> +
> +* Freescale i.MX7d PCIe PHY
> +
> +This is the PHY associated with the IMX7d PCIe controller.??It's used by the
> +PCI-e controller via the fsl,pcie-phy phandle.
> +
> +Required properties:
> +- compatible:
> +	- "fsl,imx-pcie-phy"

This is too generic. Please change it to "fsl,imx7-pcie-phy".

> +- reg: base address and length of the PCIe PHY controller
> diff --git a/arch/arm/boot/dts/imx7d.dtsi b/arch/arm/boot/dts/imx7d.dtsi
> index 200714e3feea..31f5c8576251 100644
> --- a/arch/arm/boot/dts/imx7d.dtsi
> +++ b/arch/arm/boot/dts/imx7d.dtsi
> @@ -94,6 +94,14 @@
> > ?	};
> ?};
> ?
> +&aips2 {
> > > +	pcie_phy: pcie-phy at 306d0000 {
> > +		??compatible = "fsl,imx-pcie-phy";
> > +		??reg = <0x306d0000 0x10000>;
> > +		??status = "disabled";
> > +	};
> +};
> +
> ?&aips3 {
> > > ?	usbotg2: usb at 30b20000 {
> > ?		compatible = "fsl,imx7d-usb", "fsl,imx27-usb";
> @@ -167,6 +175,7 @@
> > ?			?<&src IMX7_RESET_PCIE_CTRL_APPS_EN>;
> > ?		reset-names = "pciephy", "apps";
> > ?		status = "disabled";
> > +		fsl,pcie-phy = <&pcie_phy>;
> > ?	};
> ?};
> ?