linux-kernel - Re: [PATCH v3 5/7] arm64: dts: rockchip: add rk356x dwc3 usb3 nodes

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Date:   Mon, 28 Feb 2022 08:23:56 +0100
From:   Michael Riesch <michael.riesch@...fvision.net>
To:     Peter Geis <pgwipeout@...il.com>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     linux-rockchip@...ts.infradead.org, jbx6244@...il.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 5/7] arm64: dts: rockchip: add rk356x dwc3 usb3 nodes

Hi Peter,

On 2/27/22 16:30, Peter Geis wrote:
> Add the dwc3 device nodes to the rk356x device trees.
> The rk3566 has one usb2 capable dwc3 otg controller and one usb3 capable
> dwc3 host controller.
> The rk3568 has one usb3 capable dwc3 otg controller and one usb3 capable
> dwc3 host controller.
> 
> Signed-off-by: Peter Geis <pgwipeout@...il.com>
> ---
>  arch/arm64/boot/dts/rockchip/rk3566.dtsi | 11 ++++++++
>  arch/arm64/boot/dts/rockchip/rk3568.dtsi |  9 ++++++
>  arch/arm64/boot/dts/rockchip/rk356x.dtsi | 35 +++++++++++++++++++++++-
>  3 files changed, 54 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3566.dtsi b/arch/arm64/boot/dts/rockchip/rk3566.dtsi
> index 3839eef5e4f7..0b957068ff89 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3566.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3566.dtsi
> @@ -6,6 +6,10 @@ / {
>  	compatible = "rockchip,rk3566";
>  };
>  
> +&pipegrf {
> +	compatible = "rockchip,rk3566-pipe-grf", "syscon";
> +};
> +
>  &power {
>  	power-domain@...568_PD_PIPE {
>  		reg = <RK3568_PD_PIPE>;
> @@ -18,3 +22,10 @@ power-domain@...568_PD_PIPE {
>  		#power-domain-cells = <0>;
>  	};
>  };
> +
> +&usb_host0_xhci {
> +	phys = <&usb2phy0_otg>;
> +	phy-names = "usb2-phy";
> +	extcon = <&usb2phy0>;

I wonder what the correct place for this extcon property is. You defined
it on SoC (RK3566) level, in my patch for the RK3568 EVB1 it is added on
board level. Is this common to all RK356x variants?

Best regards,
Michael

> +	maximum-speed = "high-speed";
> +};
> diff --git a/arch/arm64/boot/dts/rockchip/rk3568.dtsi b/arch/arm64/boot/dts/rockchip/rk3568.dtsi
> index 5b0f528d6818..8ba9334f9753 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3568.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3568.dtsi
> @@ -99,6 +99,10 @@ opp-1992000000 {
>  	};
>  };
>  
> +&pipegrf {
> +	compatible = "rockchip,rk3568-pipe-grf", "syscon";
> +};
> +
>  &power {
>  	power-domain@...568_PD_PIPE {
>  		reg = <RK3568_PD_PIPE>;
> @@ -114,3 +118,8 @@ power-domain@...568_PD_PIPE {
>  		#power-domain-cells = <0>;
>  	};
>  };
> +
> +&usb_host0_xhci {
> +	phys = <&usb2phy0_otg>, <&combphy0 PHY_TYPE_USB3>;
> +	phy-names = "usb2-phy", "usb3-phy";
> +};
> diff --git a/arch/arm64/boot/dts/rockchip/rk356x.dtsi b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
> index 7cdef800cb3c..072bb9080cd6 100644
> --- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
> @@ -230,6 +230,40 @@ scmi_shmem: sram@0 {
>  		};
>  	};
>  
> +	usb_host0_xhci: usb@...00000 {
> +		compatible = "snps,dwc3";
> +		reg = <0x0 0xfcc00000 0x0 0x400000>;
> +		interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>;
> +		clocks = <&cru CLK_USB3OTG0_REF>, <&cru CLK_USB3OTG0_SUSPEND>,
> +			 <&cru ACLK_USB3OTG0>;
> +		clock-names = "ref_clk", "suspend_clk",
> +			      "bus_clk";
> +		dr_mode = "host";
> +		phy_type = "utmi_wide";
> +		power-domains = <&power RK3568_PD_PIPE>;
> +		resets = <&cru SRST_USB3OTG0>;
> +		snps,dis_u2_susphy_quirk;
> +		status = "disabled";
> +	};
> +
> +	usb_host1_xhci: usb@...00000 {
> +		compatible = "snps,dwc3";
> +		reg = <0x0 0xfd000000 0x0 0x400000>;
> +		interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>;
> +		clocks = <&cru CLK_USB3OTG1_REF>, <&cru CLK_USB3OTG1_SUSPEND>,
> +			 <&cru ACLK_USB3OTG1>;
> +		clock-names = "ref_clk", "suspend_clk",
> +			      "bus_clk";
> +		dr_mode = "host";
> +		phys = <&usb2phy0_host>, <&combphy1 PHY_TYPE_USB3>;
> +		phy-names = "usb2-phy", "usb3-phy";
> +		phy_type = "utmi_wide";
> +		power-domains = <&power RK3568_PD_PIPE>;
> +		resets = <&cru SRST_USB3OTG1>;
> +		snps,dis_u2_susphy_quirk;
> +		status = "disabled";
> +	};
> +
>  	gic: interrupt-controller@...00000 {
>  		compatible = "arm,gic-v3";
>  		reg = <0x0 0xfd400000 0 0x10000>, /* GICD */
> @@ -297,7 +331,6 @@ pmu_io_domains: io-domains {
>  	};
>  
>  	pipegrf: syscon@...50000 {
> -		compatible = "rockchip,rk3568-pipe-grf", "syscon";
>  		reg = <0x0 0xfdc50000 0x0 0x1000>;
>  	};
>