Patch "arm64: dts: allwinner: H6: properly connect USB PHY to port 0" has been added to the 5.4-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    arm64: dts: allwinner: H6: properly connect USB PHY to port 0

to the 5.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     arm64-dts-allwinner-h6-properly-connect-usb-phy-to-p.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 5da4ef370f620a5a8b0ac746bb56b720ff716d6a
Author: Andre Przywara <andre.przywara@xxxxxxx>
Date:   Wed Jan 13 15:26:24 2021 +0000

    arm64: dts: allwinner: H6: properly connect USB PHY to port 0
    
    [ Upstream commit da2fb8457f71138d455cba82edec0d34f858e506 ]
    
    In recent Allwinner SoCs the first USB host controller (HCI0) shares
    the first PHY with the MUSB controller. Probably to make this sharing
    work, we were avoiding to declare this in the DT. This has two
    shortcomings:
    - U-Boot (which uses the same .dts) cannot use this port in host mode
      without a PHY linked, so we were loosing one USB port there.
    - It requires the MUSB driver to be enabled and loaded, although we
      don't actually use it.
    
    To avoid those issues, let's add this PHY link to the H6 .dtsi file.
    After all PHY port 0 *is* connected to HCI0, so we should describe
    it as this.
    
    This makes it work in U-Boot, also improves compatiblity when no MUSB
    driver is loaded (for instance in distribution installers).
    
    Fixes: eabb3d424b6d ("arm64: dts: allwinner: h6: add USB2-related device nodes")
    Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx>
    Acked-by: Chen-Yu Tsai <wens@xxxxxxxx>
    Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20210113152630.28810-3-andre.przywara@xxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index ab081efd59718..8b77bd5a3c017 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
@@ -533,6 +533,8 @@
 				 <&ccu CLK_USB_OHCI0>;
 			resets = <&ccu RST_BUS_OHCI0>,
 				 <&ccu RST_BUS_EHCI0>;
+			phys = <&usb2phy 0>;
+			phy-names = "usb";
 			status = "disabled";
 		};
 
@@ -543,6 +545,8 @@
 			clocks = <&ccu CLK_BUS_OHCI0>,
 				 <&ccu CLK_USB_OHCI0>;
 			resets = <&ccu RST_BUS_OHCI0>;
+			phys = <&usb2phy 0>;
+			phy-names = "usb";
 			status = "disabled";
 		};