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Message-ID: <57D16972.9040801@ti.com>
Date: Thu, 8 Sep 2016 19:06:50 +0530
From: Kishon Vijay Abraham I <kishon@...com>
To: Chris Zhong <zyw@...k-chips.com>, <dianders@...omium.org>,
<tfiga@...omium.org>, <heiko@...ech.de>, <yzq@...k-chips.com>,
<groeck@...omium.org>, <myungjoo.ham@...sung.com>,
<cw00.choi@...sung.com>, <wulf@...k-chips.com>,
<marcheu@...omium.org>, <briannorris@...omium.org>
CC: <linux-rockchip@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<linux@...ck-us.net>, <kever.yang@...k-chips.com>,
<galak@...eaurora.org>, <linux-kernel@...r.kernel.org>,
<ijc+devicetree@...lion.org.uk>, <robh+dt@...nel.org>,
<pawel.moll@....com>, <mark.rutland@....com>,
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RESEND v14 PATCH 1/5] Documentation: bindings: add dt doc for
Rockchip USB Type-C PHY
On Tuesday 06 September 2016 10:30 PM, Chris Zhong wrote:
> This patch adds a binding that describes the Rockchip USB Type-C PHY
> for rk3399
>
> Signed-off-by: Chris Zhong <zyw@...k-chips.com>
> Reviewed-by: Tomasz Figa <tfiga@...omium.org>
> Reviewed-by: Kever Yang <kever.yang@...k-chips.com>
> Reviewed-by: Guenter Roeck <linux@...ck-us.net>
> Acked-by: Rob Herring <robh@...nel.org>
merged, thanks.
-Kishon
>
> ---
>
> Changes in v14: None
> Changes in v13: None
> Changes in v12: None
> Changes in v11:
> - make a clearer emarcation between usb phy and dp phy
>
> Changes in v10:
> - remove rockchip,uphy-dp-sel property
>
> Changes in v9:
> - change #phy-cells to 1
>
> Changes in v8: None
> Changes in v7: None
> Changes in v6:
> - add assigned-clocks and assigned-clock-rates
>
> Changes in v5: None
> Changes in v4:
> - add a #phy-cells node
>
> Changes in v3:
> - use compatible: rockchip,rk3399-typec-phy
> - use dashes instead of underscores.
>
> Changes in v2:
> - add some registers description
>
> Changes in v1:
> - add extcon node description
> - move the registers in phy driver
> - remove the suffix of reset
>
> .../devicetree/bindings/phy/phy-rockchip-typec.txt | 101 +++++++++++++++++++++
> 1 file changed, 101 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt
>
> diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt
> new file mode 100644
> index 0000000..6ea867e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt
> @@ -0,0 +1,101 @@
> +* ROCKCHIP type-c PHY
> +---------------------
> +
> +Required properties:
> + - compatible : must be "rockchip,rk3399-typec-phy"
> + - reg: Address and length of the usb phy control register set
> + - rockchip,grf : phandle to the syscon managing the "general
> + register files"
> + - clocks : phandle + clock specifier for the phy clocks
> + - clock-names : string, clock name, must be "tcpdcore", "tcpdphy-ref";
> + - assigned-clocks: main clock, should be <&cru SCLK_UPHY0_TCPDCORE> or
> + <&cru SCLK_UPHY1_TCPDCORE>;
> + - assigned-clock-rates : the phy core clk frequency, shall be: 50000000
> + - resets : a list of phandle + reset specifier pairs
> + - reset-names : string reset name, must be:
> + "uphy", "uphy-pipe", "uphy-tcphy"
> + - extcon : extcon specifier for the Power Delivery
> +
> +Note, there are 2 type-c phys for RK3399, and they are almost identical, except
> +these registers(description below), every register node contains 3 sections:
> +offset, enable bit, write mask bit.
> + - rockchip,typec-conn-dir : the register of type-c connector direction,
> + for type-c phy0, it must be <0xe580 0 16>;
> + for type-c phy1, it must be <0xe58c 0 16>;
> + - rockchip,usb3tousb2-en : the register of type-c force usb3 to usb2 enable
> + control.
> + for type-c phy0, it must be <0xe580 3 19>;
> + for type-c phy1, it must be <0xe58c 3 19>;
> + - rockchip,external-psm : the register of type-c phy external psm clock
> + selection.
> + for type-c phy0, it must be <0xe588 14 30>;
> + for type-c phy1, it must be <0xe594 14 30>;
> + - rockchip,pipe-status : the register of type-c phy pipe status.
> + for type-c phy0, it must be <0xe5c0 0 0>;
> + for type-c phy1, it must be <0xe5c0 16 16>;
> +
> +Required nodes : a sub-node is required for each port the phy provides.
> + The sub-node name is used to identify dp or usb3 port,
> + and shall be the following entries:
> + * "dp-port" : the name of DP port.
> + * "usb3-port" : the name of USB3 port.
> +
> +Required properties (port (child) node):
> +- #phy-cells : must be 0, See ./phy-bindings.txt for details.
> +
> +Example:
> + tcphy0: phy@...c0000 {
> + compatible = "rockchip,rk3399-typec-phy";
> + reg = <0x0 0xff7c0000 0x0 0x40000>;
> + rockchip,grf = <&grf>;
> + extcon = <&fusb0>;
> + clocks = <&cru SCLK_UPHY0_TCPDCORE>,
> + <&cru SCLK_UPHY0_TCPDPHY_REF>;
> + clock-names = "tcpdcore", "tcpdphy-ref";
> + assigned-clocks = <&cru SCLK_UPHY0_TCPDCORE>;
> + assigned-clock-rates = <50000000>;
> + resets = <&cru SRST_UPHY0>,
> + <&cru SRST_UPHY0_PIPE_L00>,
> + <&cru SRST_P_UPHY0_TCPHY>;
> + reset-names = "uphy", "uphy-pipe", "uphy-tcphy";
> + rockchip,typec-conn-dir = <0xe580 0 16>;
> + rockchip,usb3tousb2-en = <0xe580 3 19>;
> + rockchip,external-psm = <0xe588 14 30>;
> + rockchip,pipe-status = <0xe5c0 0 0>;
> +
> + tcphy0_dp: dp-port {
> + #phy-cells = <0>;
> + };
> +
> + tcphy0_usb3: usb3-port {
> + #phy-cells = <0>;
> + };
> + };
> +
> + tcphy1: phy@...00000 {
> + compatible = "rockchip,rk3399-typec-phy";
> + reg = <0x0 0xff800000 0x0 0x40000>;
> + rockchip,grf = <&grf>;
> + extcon = <&fusb1>;
> + clocks = <&cru SCLK_UPHY1_TCPDCORE>,
> + <&cru SCLK_UPHY1_TCPDPHY_REF>;
> + clock-names = "tcpdcore", "tcpdphy-ref";
> + assigned-clocks = <&cru SCLK_UPHY1_TCPDCORE>;
> + assigned-clock-rates = <50000000>;
> + resets = <&cru SRST_UPHY1>,
> + <&cru SRST_UPHY1_PIPE_L00>,
> + <&cru SRST_P_UPHY1_TCPHY>;
> + reset-names = "uphy", "uphy-pipe", "uphy-tcphy";
> + rockchip,typec-conn-dir = <0xe58c 0 16>;
> + rockchip,usb3tousb2-en = <0xe58c 3 19>;
> + rockchip,external-psm = <0xe594 14 30>;
> + rockchip,pipe-status = <0xe5c0 16 16>;
> +
> + tcphy1_dp: dp-port {
> + #phy-cells = <0>;
> + };
> +
> + tcphy1_usb3: usb3-port {
> + #phy-cells = <0>;
> + };
> + };
>
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