linux-kernel - [PATCH 0/3] Add support for multiport controller

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

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 31 May 2022 13:50:14 +0530
From:   Harsh Agarwal <quic_harshq@...cinc.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        Felipe Balbi <balbi@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
CC:     <linux-usb@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <quic_pkondeti@...cinc.com>,
        <quic_ppratap@...cinc.com>, <quic_jackp@...cinc.com>,
        Harsh Agarwal <quic_harshq@...cinc.com>
Subject: [PATCH 0/3] Add support for multiport controller 

Currently the DWC3 driver supports only single port controller which 
requires at most two PHYs ie HS and SS PHYs. There are SoCs that has
DWC3 controller with multiple ports that can operate in host mode. Some of
the port supports both SS+HS and other port supports only HS mode.

This change refactors the PHY logic to support multiport controller. The 
implementation has been tested with Generic PHYs as well.

For any multiport controller we would define a new node "multiport" inside
dwc3 and then add subsequent "mport" nodes inside it for individual ports
that it supports. Now each individual "mport" node defines their own PHYs.

e.g.
Consider a Dual port controller where each port supports HS+SS 

multiport {
	mp_1: mport@1 {
		usb-phy = <usb2_phy0>, <usb3_phy0>;
        /* Can define Generic PHYs also */  
	};	
	mp_2: mport@2 {
		usb-phy = <usb2_phy1>, <usb3_phy1>;
	};	

Harsh Agarwal (3):
  dt-bindings: usb: dwc3: Add support for multiport related properties
  usb: phy: Add devm_of_usb_get_phy_by_phandle
  usb: dwc3: Refactor PHY logic to support Multiport Controller

 .../devicetree/bindings/usb/snps,dwc3.yaml         |  55 +++
 drivers/usb/dwc3/core.c                            | 400 +++++++++++++++------
 drivers/usb/dwc3/core.h                            |  12 +-
 drivers/usb/dwc3/drd.c                             |  16 +-
 drivers/usb/dwc3/gadget.c                          |   4 +-
 drivers/usb/phy/phy.c                              |  34 ++
 include/linux/usb/phy.h                            |   8 +
 7 files changed, 402 insertions(+), 127 deletions(-)

-- 
2.7.4