linux-kernel - Re: [PATCH] arm64: dts: rockchip: support the usb2phy for rk3399 evb

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Date:	Thu, 07 Jul 2016 12:11:41 +0200
From:	Heiko Stuebner <heiko@...ech.de>
To:	Caesar Wang <wxt@...k-chips.com>
Cc:	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, dianders@...omium.org,
	william.wu@...k-chips.com, huangtao@...k-chips.com,
	eddie.cai@...k-chips.com, Frank Wang <frank.wang@...k-chips.com>
Subject: Re: [PATCH] arm64: dts: rockchip: support the usb2phy for rk3399 evb

Hi,

Am Donnerstag, 7. Juli 2016, 12:46:40 schrieb Caesar Wang:
> From: Frank Wang <frank.wang@...k-chips.com>
> 
> This patch adds the usb2phy needed dts node information for rk3399.
> 
> USB2.0 PHY is comprised of one Host port and one OTG port.
> Host Port is for USB2.0 host controller; OTG port is for USB2.0 part of
> USB3.0 OTG controller, and as a part to construct a fully feature TypeC
> subsystem.
> 
> The USB2.0 vbus gpio is board specific, it's no same with all rk3399
> boards, so move it into evb voard.
> 
> Signed-off-by: Frank Wang <frank.wang@...k-chips.com>
> Signed-off-by: Caesar Wang <wxt@...k-chips.com>
> ---
> 
>  arch/arm64/boot/dts/rockchip/rk3399-evb.dts |  4 ++++
>  arch/arm64/boot/dts/rockchip/rk3399.dtsi    | 19 +++++++++++++++++++
>  2 files changed, 23 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> b/arch/arm64/boot/dts/rockchip/rk3399.dtsi index 4c84229..21d147f 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> @@ -242,6 +242,25 @@
>  		status = "disabled";
>  	};
> 
> +	usb2phy: usb2phy {
> +		compatible = "rockchip,rk3399-usb-phy";
> +		rockchip,grf = <&grf>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		usb2phy0: usb2-phy0 {
> +			#phy-cells = <0>;
> +			#clock-cells = <0>;
> +			reg = <0xe458>;
> +		};
> +
> +		usb2phy1: usb2-phy1 {
> +			#phy-cells = <0>;
> +			#clock-cells = <0>;
> +			reg = <0xe468>;
> +		};
> +	};
> +

The rk3399 uses the innosilicon usb2 phy and the binding we've come up for 
it looks a lot different than the above. So I'm not sure where this is 
coming from, especially as I haven't seen the driver part for the rk3399 at 
all yet. So far Frank was always working on te rk3366 variant, which seemed 
to be the most complete.


Heiko