Re: [PATCH 3/4] arm64: dts: imx93: add usb nodes

[Alexander Stein <alexander.stein@ew.tq-group.com>]

Hi,

thanks for the patch.

Am Donnerstag, 14. Dezember 2023, 12:24:41 CET schrieb Xu Yang:
> There are 2 USB controllers on i.MX93. Add them.
> 
> Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
> ---
>  arch/arm64/boot/dts/freescale/imx93.dtsi | 58 ++++++++++++++++++++++++
>  1 file changed, 58 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx93.dtsi
> b/arch/arm64/boot/dts/freescale/imx93.dtsi index 34c0540276d1..bcf4861cfede
> 100644
> --- a/arch/arm64/boot/dts/freescale/imx93.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx93.dtsi
> @@ -171,6 +171,20 @@ cm33: remoteproc-cm33 {
>  		status = "disabled";
>  	};
> 
> +	usbphynop1: usbphynop1 {
> +		#phy-cells = <0>;
> +		compatible = "usb-nop-xceiv";

compatible first.

> +		clocks = <&clk IMX93_CLK_USB_PHY_BURUNIN>;
> +		clock-names = "main_clk";
> +	};
> +
> +	usbphynop2: usbphynop2 {
> +		#phy-cells = <0>;
> +		compatible = "usb-nop-xceiv";

compatible first.

> +		clocks = <&clk IMX93_CLK_USB_PHY_BURUNIN>;
> +		clock-names = "main_clk";
> +	};
> +
>  	soc@0 {
>  		compatible = "simple-bus";
>  		#address-cells = <1>;
> @@ -1059,5 +1073,49 @@ ddr-pmu@4e300dc0 {
>  			reg = <0x4e300dc0 0x200>;
>  			interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
>  		};
> +
> +		usbotg1: usb@4c100000 {
> +			compatible = "fsl,imx8mm-usb", "fsl,imx7d-usb", 
"fsl,imx27-usb";
> +			reg = <0x4c100000 0x200>;
> +			interrupts = <GIC_SPI 187 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clk IMX93_CLK_USB_CONTROLLER_GATE>,
> +				 <&clk IMX93_CLK_HSIO_32K_GATE>;
> +			clock-names = "usb_ctrl_root_clk", 
"usb_wakeup_clk";

drivers/usb/chipidea/ci_hdrc_imx.c uses 3 clocks: "ipg", "ahb" and "per", see 
imx_get_clks(). How is this supposed to work?

> +			assigned-clocks = <&clk IMX93_CLK_HSIO>;
> +			assigned-clock-parents = <&clk 
IMX93_CLK_SYS_PLL_PFD1_DIV2>;
> +			assigned-clock-rates = <133000000>;
> +			fsl,usbphy = <&usbphynop1>;
> +			fsl,usbmisc = <&usbmisc1 0>;
> +			status = "disabled";
> +		};
> +
> +		usbmisc1: usbmisc@4c100200 {
> +			compatible = "fsl,imx8mm-usbmisc", "fsl,imx7d-
usbmisc",
> +					"fsl,imx6q-usbmisc";

This means you are compatible to fsl,imx7d-usbmisc. Which means you use 
register MX7D_USB_OTG_PHY_STATUS in USB misc (USBNC). But i.MX93 RM Rev. 2 
(04/2023) lacks this and other registers.

> +			#index-cells = <1>;
> +			reg = <0x4c100200 0x200>;

reg after compatible.

> +		};
> +
> +		usbotg2: usb@4c200000 {
> +			compatible = "fsl,imx8mm-usb", "fsl,imx7d-usb", 
"fsl,imx27-usb";
> +			reg = <0x4c200000 0x200>;
> +			interrupts = <GIC_SPI 188 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clk IMX93_CLK_USB_CONTROLLER_GATE>,
> +				 <&clk IMX93_CLK_HSIO_32K_GATE>;
> +			clock-names = "usb_ctrl_root_clk", 
"usb_wakeup_clk";

The same as for usbotg1 applies here.

> +			assigned-clocks = <&clk IMX93_CLK_HSIO>;
> +			assigned-clock-parents = <&clk 
IMX93_CLK_SYS_PLL_PFD1_DIV2>;
> +			assigned-clock-rates = <133000000>;
> +			fsl,usbphy = <&usbphynop2>;
> +			fsl,usbmisc = <&usbmisc2 0>;
> +			status = "disabled";
> +		};
> +
> +		usbmisc2: usbmisc@4c200200 {
> +			compatible = "fsl,imx8mm-usbmisc", "fsl,imx7d-
usbmisc",
> +					"fsl,imx6q-usbmisc";
> +			#index-cells = <1>;
> +			reg = <0x4c200200 0x200>;

The same as for usbmisc1 applies here.

> +		};
>  	};
>  };

Best regards,
Alexander

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