RE: [RFT PATCH v3 4/4] arm64: dts: exynos: add unit address to DWC3 node wrapper in Exynos7

["Alim Akhtar" <alim.akhtar@samsung.com>]

> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Sent: Saturday, January 28, 2023 2:57 AM
> To: Rob Herring <robh+dt@kernel.org>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt@linaro.org>; Alim Akhtar
> <alim.akhtar@samsung.com>; devicetree@vger.kernel.org; linux-arm-
> kernel@lists.infradead.org; linux-samsung-soc@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Cc: replicant@osuosl.org; phone-devel@vger.kernel.org;
> ~postmarketos/upstreaming@lists.sr.ht; Martin Jücker
> <martin.juecker@gmail.com>; Henrik Grimler <henrik@grimler.se>; Sam
> Protsenko <semen.protsenko@linaro.org>; Chanho Park
> <chanho61.park@samsung.com>; Marek Szyprowski
> <m.szyprowski@samsung.com>; Chanwoo Choi
> <cw00.choi@samsung.com>; Krzysztof Kozlowski
> <krzysztof.kozlowski@linaro.org>
> Subject: [RFT PATCH v3 4/4] arm64: dts: exynos: add unit address to DWC3
> node wrapper in Exynos7
> 
> Neither simple-bus bindings nor dtc W=1 accept device nodes in soc@ node
> which do not have unit address.  Therefore usethe address space of child
> device (actual DWC3 Controller) as the wrapper's address to
> fix:
> 
>   exynos7-espresso.dtb: soc@0: usb: {'compatible': ['samsung,exynos7-
> dwusb3'], ...
>     should not be valid under {'type': 'object'}
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> 
> ---
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>

Tested on exynos7-espresso and xHCI driver still gets probed, so 

Tested-by: Alim Akhtar <alim.akhtar@samsung.com>


> 
> Changes since v1:
> 1. New patch
> ---
>  arch/arm64/boot/dts/exynos/exynos7.dtsi | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi
> b/arch/arm64/boot/dts/exynos/exynos7.dtsi
> index 82fee1b7caab..b1fa68835b09 100644
> --- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
> @@ -690,7 +690,7 @@ usbdrd_phy: phy@15500000 {
>  			#phy-cells = <1>;
>  		};
> 
> -		usbdrd: usb {
> +		usbdrd: usb@15400000 {
>  			compatible = "samsung,exynos7-dwusb3";
>  			clocks = <&clock_fsys0 ACLK_USBDRD300>,
>  			       <&clock_fsys0 SCLK_USBDRD300_SUSPENDCLK>,
> @@ -699,11 +699,11 @@ usbdrd: usb {
>  				"usbdrd30_axius_clk";
>  			#address-cells = <1>;
>  			#size-cells = <1>;
> -			ranges;
> +			ranges = <0x0 0x15400000 0x10000>;
> 
> -			usb@15400000 {
> +			usb@0 {
>  				compatible = "snps,dwc3";
> -				reg = <0x15400000 0x10000>;
> +				reg = <0x0 0x10000>;
>  				interrupts = <GIC_SPI 223
> IRQ_TYPE_LEVEL_HIGH>;
>  				phys = <&usbdrd_phy 0>, <&usbdrd_phy 1>;
>  				phy-names = "usb2-phy", "usb3-phy";
> --
> 2.34.1