[PATCH 1/1] ARM: dts: imx7: Move hsic_phy power domain to HSIC PHY node

[Jun Li]

> -----Original Message-----
> From: Alexander Stein <alexander.stein at ew.tq-group.com>
> Sent: Monday, May 9, 2022 7:07 PM
> To: Rob Herring <robh+dt at kernel.org>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt at linaro.org>; Shawn Guo <shawnguo at kernel.org>;
> Sascha Hauer <s.hauer at pengutronix.de>; Fabio Estevam <festevam at gmail.com>
> Cc: Alexander Stein <alexander.stein at ew.tq-group.com>;
> devicetree at vger.kernel.org; linux-arm-kernel at lists.infradead.org; Jun Li
> <jun.li at nxp.com>
> Subject: [PATCH 1/1] ARM: dts: imx7: Move hsic_phy power domain to HSIC PHY
> node
> 
> Move the power domain to its actual user. This keeps the power domain enabled
> even when the USB host is runtime suspended. This is necessary to detect
> any downstream events, like device attach.
> 
> Suggested-by: Jun Li <jun.li at nxp.com>
> Signed-off-by: Alexander Stein <alexander.stein at ew.tq-group.com>

This is a fix and should be applied to stable tree too.

Li Jun  

> ---
> This patch superseeds the initial patch from [1].
> 
> [1]
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.
> kernel.org%2Flinux-arm-kernel%2F5566202.DvuYhMxLoT%40steina-w%2FT%2F&am
> p;data=05%7C01%7Cjun.li%40nxp.com%7Cae99c3d6780d4f4b513c08da31ac14c5%7C
> 686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C637876912401414970%7CUnknown
> %7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJX
> VCI6Mn0%3D%7C3000%7C%7C%7C&sdata=vKVI%2F%2BIrMJejYM%2BYEex2TCxskxPu
> IZeLxYWSKFw%2FKZk%3D&reserved=0
>  arch/arm/boot/dts/imx7s.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
> index 008e3da460f1..039eed79d2e7 100644
> --- a/arch/arm/boot/dts/imx7s.dtsi
> +++ b/arch/arm/boot/dts/imx7s.dtsi
> @@ -120,6 +120,7 @@ usbphynop3: usbphynop3 {
>  		compatible = "usb-nop-xceiv";
>  		clocks = <&clks IMX7D_USB_HSIC_ROOT_CLK>;
>  		clock-names = "main_clk";
> +		power-domains = <&pgc_hsic_phy>;
>  		#phy-cells = <0>;
>  	};
> 
> @@ -1153,7 +1154,6 @@ usbh: usb at 30b30000 {
>  				compatible = "fsl,imx7d-usb", "fsl,imx27-usb";
>  				reg = <0x30b30000 0x200>;
>  				interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
> -				power-domains = <&pgc_hsic_phy>;
>  				clocks = <&clks IMX7D_USB_CTRL_CLK>;
>  				fsl,usbphy = <&usbphynop3>;
>  				fsl,usbmisc = <&usbmisc3 0>;
> --
> 2.25.1