| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20170127200702.biyvgzgoq3yxx7yx@rob-hp-laptop>
Date: Fri, 27 Jan 2017 14:07:02 -0600
From: Rob Herring <robh@...nel.org>
To: Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc: Kishon Vijay Abraham I <kishon@...com>,
Matthias Brugger <matthias.bgg@...il.com>,
Felipe Balbi <felipe.balbi@...ux.intel.com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-usb@...r.kernel.org, linux-mediatek@...ts.infradead.org,
devicetree@...r.kernel.org
Subject: Re: [PATCH v2, 6/6] dt-bindings: phy-mt65xx-usb: add support for new
version phy
On Fri, Jan 20, 2017 at 04:18:41PM +0800, Chunfeng Yun wrote:
> add a new compatible string for "mt2712", and move reference clock
> into each port node;
>
> Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
> ---
> .../devicetree/bindings/phy/phy-mt65xx-usb.txt | 91 +++++++++++++++++---
> 1 file changed, 77 insertions(+), 14 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/phy/phy-mt65xx-usb.txt b/Documentation/devicetree/bindings/phy/phy-mt65xx-usb.txt
> index 33a2b1e..1d06604 100644
> --- a/Documentation/devicetree/bindings/phy/phy-mt65xx-usb.txt
> +++ b/Documentation/devicetree/bindings/phy/phy-mt65xx-usb.txt
> @@ -6,21 +6,27 @@ This binding describes a usb3.0 phy for mt65xx platforms of Medaitek SoC.
> Required properties (controller (parent) node):
> - compatible : should be one of
> "mediatek,mt2701-u3phy"
> + "mediatek,mt2712-u3phy"
> "mediatek,mt8173-u3phy"
> - - reg : offset and length of register for phy, exclude port's
> - register.
> - - clocks : a list of phandle + clock-specifier pairs, one for each
> - entry in clock-names
> - - clock-names : must contain
> - "u3phya_ref": for reference clock of usb3.0 analog phy.
>
> Required nodes : a sub-node is required for each port the controller
> provides. Address range information including the usual
> 'reg' property is used inside these nodes to describe
> the controller's topology.
>
> +Optional properties (controller (parent) node):
> + - reg : offset and length of register shared by multiple ports,
How is this optional?
> + exclude port's private register. It is needed on mt2701
> + and mt8173, but not on mt2712.
> +
> Required properties (port (child) node):
> - reg : address and length of the register set for the port.
> +- clocks : a list of phandle + clock-specifier pairs, one for each
> + entry in clock-names
> +- clock-names : must contain
> + "ref_clk": 48M reference clock for HighSpeed analog phy; and
_clk is redundant. Just "ref"
> + 26M reference clock for SuperSpeed analog phy, sometimes is
> + 24M, 25M or 27M, depended on platform.
> - #phy-cells : should be 1 (See second example)
> cell after port phandle is phy type from:
> - PHY_TYPE_USB2
> @@ -31,21 +37,31 @@ Example:
> u3phy: usb-phy@...90000 {
> compatible = "mediatek,mt8173-u3phy";
> reg = <0 0x11290000 0 0x800>;
> - clocks = <&apmixedsys CLK_APMIXED_REF2USB_TX>;
> - clock-names = "u3phya_ref";
> #address-cells = <2>;
> #size-cells = <2>;
> ranges;
> status = "okay";
>
> - phy_port0: port@...90800 {
> - reg = <0 0x11290800 0 0x800>;
> + u2port0: port@...90800 {
> + reg = <0 0x11290800 0 0x100>;
> + clocks = <&apmixedsys CLK_APMIXED_REF2USB_TX>;
> + clock-names = "ref_clk";
> #phy-cells = <1>;
> status = "okay";
> };
>
> - phy_port1: port@...91000 {
> - reg = <0 0x11291000 0 0x800>;
> + u3port0: port@...90900 {
> + reg = <0 0x11290800 0 0x700>;
> + clocks = <&clk26m>;
> + clock-names = "ref_clk";
> + #phy-cells = <1>;
> + status = "okay";
> + };
> +
> + u2port1: port@...91000 {
> + reg = <0 0x11291000 0 0x100>;
> + clocks = <&apmixedsys CLK_APMIXED_REF2USB_TX>;
> + clock-names = "ref_clk";
> #phy-cells = <1>;
> status = "okay";
> };
> @@ -64,7 +80,54 @@ Example:
>
> usb30: usb@...70000 {
> ...
> - phys = <&phy_port0 PHY_TYPE_USB3>;
> - phy-names = "usb3-0";
> + phys = <&u2port0 PHY_TYPE_USB2>, <&u3port0 PHY_TYPE_USB3>;
> + phy-names = "usb2-0", "usb3-0";
> ...
> };
> +
> +
> +Layout differences of banks between mt8173/mt2701 and mt2712
> +-------------------------------------------------------------
> +mt8173 and mt2701:
> +port offset bank
> +shared 0x0000 SPLLC
> + 0x0100 FMREG
> +u2 port0 0x0800 U2PHY_COM
> +u3 port0 0x0900 U3PHYD
> + 0x0a00 U3PHYD_BANK2
> + 0x0b00 U3PHYA
> + 0x0c00 U3PHYA_DA
> +u2 port1 0x1000 U2PHY_COM
> +u3 port1 0x1100 U3PHYD
> + 0x1200 U3PHYD_BANK2
> + 0x1300 U3PHYA
> + 0x1400 U3PHYA_DA
> +u2 port2 0x1800 U2PHY_COM
> + ...
> +
> +mt2712:
> +port offset bank
> +u2 port0 0x0000 MISC
> + 0x0100 FMREG
> + 0x0300 U2PHY_COM
> +u3 port0 0x0700 SPLLC
> + 0x0800 CHIP
> + 0x0900 U3PHYD
> + 0x0a00 U3PHYD_BANK2
> + 0x0b00 U3PHYA
> + 0x0c00 U3PHYA_DA
> +u2 port1 0x1000 MISC
> + 0x1100 FMREG
> + 0x1300 U2PHY_COM
> +u3 port1 0x1700 SPLLC
> + 0x1800 CHIP
> + 0x1900 U3PHYD
> + 0x1a00 U3PHYD_BANK2
> + 0x1b00 U3PHYA
> + 0x1c00 U3PHYA_DA
> +u2 port2 0x2000 MISC
> + ...
> +
> + SPLLC shared by u3 ports and FMREG shared by u2 ports on
> +mt8173/mt2701 are put back into each port; a new bank MISC for
> +u2 ports and CHIP for u3 ports are added on mt2712.
> --
> 1.7.9.5
>
Powered by blists - more mailing lists