linux-kernel - [PATCH v3 0/4] Add USB2.0 PHY and USB3.0 PHY support for SpacemiT K1

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-Id: <20250517-b4-k1-usb3-phy-v2-v3-0-e0655613a163@whut.edu.cn>
Date: Sat, 17 May 2025 22:25:13 +0800
From: Ze Huang <huangze@...t.edu.cn>
To: Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Yixun Lan <dlan@...too.org>, 
 Philipp Zabel <p.zabel@...gutronix.de>
Cc: linux-phy@...ts.infradead.org, devicetree@...r.kernel.org, 
 linux-riscv@...ts.infradead.org, spacemit@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, Ze Huang <huangze@...t.edu.cn>, 
 Junzhong Pan <junzhong.pan@...cemit.com>
Subject: [PATCH v3 0/4] Add USB2.0 PHY and USB3.0 PHY support for SpacemiT
 K1

This patch series introduces support for the USB2.0 PHY and PCIe/USB3.0
Combo PHY on the SpacemiT K1 SoC. The implementation has been tested on the
Milk-V Jupiter and BananaPi-f3.

K1 includes three USB ports as follows[1]:
- A USB2.0 OTG Port
- A USB2.0 Host Only Port
- A USB3.0 Port with a USB2.0 DRD interface

USB3.0 PHY for USB3.0 Port is shared with PCIe port A, meaning that only one of
these interfaces (PCIe or USB3.0) can be active at a given time.

Link: https://developer.spacemit.com/documentation?token=AjHDwrW78igAAEkiHracBI9HnTb#part5 [1]

Signed-off-by: Ze Huang <huangze@...t.edu.cn>
---
Changes in v3:
- improve commit message, provide more info about phy hardware
- drop superfluous local variable in `spacemit_combphy_wait_ready`
- replace devm_reset_control_get with devm_reset_control_get_exclusive
- Link to v2: https://lore.kernel.org/r/20250418-b4-k1-usb3-phy-v2-v2-0-b69e02da84eb@whut.edu.cn

Changes in v2:
- combphy dt-bindings:
  - fix reg-names
  - describe reg
  - describe #phy-cells argument
- drop stale ".owner" in driver struct
- add support for usb lfps_thres in combphy
- fix Kconfig depends on
- Link to v1: https://lore.kernel.org/all/20250407-b4-k1-usb3-v3-2-v1-0-bf0bcc41c9ba@whut.edu.cn

---
Ze Huang (4):
      dt-bindings: phy: spacemit: add K1 USB2 PHY
      dt-bindings: phy: spacemit: add K1 PCIe/USB3 combo PHY
      phy: spacemit: support K1 USB2.0 PHY controller
      phy: spacemit: add USB3 support for K1 PCIe/USB3 combo PHY

 .../bindings/phy/spacemit,k1-combphy.yaml          |  72 ++++++
 .../devicetree/bindings/phy/spacemit,usb2-phy.yaml |  40 ++++
 drivers/phy/Kconfig                                |   1 +
 drivers/phy/Makefile                               |   1 +
 drivers/phy/spacemit/Kconfig                       |  21 ++
 drivers/phy/spacemit/Makefile                      |   3 +
 drivers/phy/spacemit/phy-k1-combphy.c              | 248 +++++++++++++++++++++
 drivers/phy/spacemit/phy-k1-usb2.c                 | 131 +++++++++++
 8 files changed, 517 insertions(+)
---
base-commit: 64e9fdfc89a76fed38d8ddeed72d42ec71957ed9
change-id: 20250417-b4-k1-usb3-phy-v2-fb1e41849049

Best regards,
-- 
Ze Huang <huangze@...t.edu.cn>