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@xxxxxxxxxx>
Cc: Sascha Hauer <kernel@xxxxxxxxxxxxxx>
Cc: Fabio Estevam <fabio.estevam@xxxxxxx>
Cc: Richard Zhu <hongxing.zhu@xxxxxxx>
Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Signed-off-by: Trent Piepho <tpiepho@xxxxxxxxxx>
---
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"
+- 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@306d0000 {
+ compatible = "fsl,imx-pcie-phy";
+ reg = <0x306d0000 0x10000>;
+ status = "disabled";
+ };
+};
+
&aips3 {
usbotg2: usb@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>;
};
};
--
2.14.4
