arm64: dts: meson: sync dt and bindings from v5.6-rc2

Sync the device tree and dt-bindings from Linux v5.6-rc2
11a48a5a18c6 ("Linux 5.6-rc2")

The only exception to this is the mmc pinctrl pin bias of gxl SoC family.
This is a fix which found its way to u-boot but not Linux yet.

Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/arch/arm/dts/meson-g12b-a311d-khadas-vim3.dts b/arch/arm/dts/meson-g12b-a311d-khadas-vim3.dts
index 3a6a1e0c1e..124a809010 100644
--- a/arch/arm/dts/meson-g12b-a311d-khadas-vim3.dts
+++ b/arch/arm/dts/meson-g12b-a311d-khadas-vim3.dts
@@ -14,3 +14,28 @@
 / {
 	compatible = "khadas,vim3", "amlogic,a311d", "amlogic,g12b";
 };
+
+/*
+ * The VIM3 on-board  MCU can mux the PCIe/USB3.0 shared differential
+ * lines using a FUSB340TMX USB 3.1 SuperSpeed Data Switch between
+ * an USB3.0 Type A connector and a M.2 Key M slot.
+ * The PHY driving these differential lines is shared between
+ * the USB3.0 controller and the PCIe Controller, thus only
+ * a single controller can use it.
+ * If the MCU is configured to mux the PCIe/USB3.0 differential lines
+ * to the M.2 Key M slot, uncomment the following block to disable
+ * USB3.0 from the USB Complex and enable the PCIe controller.
+ * The End User is not expected to uncomment the following except for
+ * testing purposes, but instead rely on the firmware/bootloader to
+ * update these nodes accordingly if PCIe mode is selected by the MCU.
+ */
+/*
+&pcie {
+	status = "okay";
+};
+
+&usb {
+	phys = <&usb2_phy0>, <&usb2_phy1>;
+	phy-names = "usb2-phy0", "usb2-phy1";
+};
+ */