linux-kernel - [PATCH v3 0/9] initial usbdrd phy support for Exynosautov920 soc

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Message-Id: <20250613055613.866909-1-pritam.sutar@samsung.com>
Date: Fri, 13 Jun 2025 11:26:04 +0530
From: Pritam Manohar Sutar <pritam.sutar@...sung.com>
To: vkoul@...nel.org, kishon@...nel.org, robh@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, alim.akhtar@...sung.com,
	andre.draszik@...aro.org, peter.griffin@...aro.org, kauschluss@...root.org,
	ivo.ivanov.ivanov1@...il.com, m.szyprowski@...sung.com,
	s.nawrocki@...sung.com, pritam.sutar@...sung.com
Cc: linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, rosa.pila@...sung.com,
	dev.tailor@...sung.com, faraz.ata@...sung.com, muhammed.ali@...sung.com,
	selvarasu.g@...sung.com
Subject: [PATCH v3 0/9] initial usbdrd phy support for Exynosautov920 soc

This SoC has a single USB 3.1 DRD combo phy and three USB2.0 only
DRD phy controllers

  - Combo phy supports USB3.1 SSP+(10Gbps) protocol and is backwards
    compatible to the USB3.0 SS(5Gbps). 'Add-on USB2.0' phy is added
    to support USB2.0 HS(480Mbps), FS(12Mbps) and LS(1.5Mbps) data 
    rates. These two phys are combined to form a combo phy as mentioned
    below.
 
   USB30DRD_0 port

     +-----------------------------------------------------+
     |                                                     |
     |           (combo) USB PHY controller                |
     |     +-----------------------------------------+     |
     |     |               USB HSPHY                 |     |
     |     |  (samsung,exynosautov920-usbdrd-hsphy)  |     |
     |     +-----------------------------------------+     |
     |                                                     |
     |   +---------------------------------------------+   |
     |   |               USB SSPHY                     |   |
     |   |   (samsung,exynosautov920-usb31drd-ssphy)   |   |
     |   +---------------------------------------------+   |
     |                                                     |
     +-----------------------------------------------------+
     |                                                     |
     |                USBDRD30 Link                        |
     |                  Controller                         |
     |                                                     |
     +-----------------------------------------------------+

  - USB2.0 phy supports only UTMI+ interface. USB2.0DRD phy
    is very similar to the existing Exynos850 support in this driver.

    USB20DRD_0/1/2 ports

 
      +---------------------------------------------------+
      |                                                   |
      |                USB PHY controller                 |
      |    +-----------------------------------------+    |
      |    |              USB HSPHY                  |    |
      |    |  (samsung,exynosautov920-usbdrd-phy)    |    |
      |    +-----------------------------------------+    |
      |                                                   |
      +---------------------------------------------------+
      |                                                   |
      |             USBDRD20_* Link                       |
      |                Controller                         |
      |                                                   |
      +---------------------------------------------------+

This patchset only supports device mode and same is verified with
as NCM device with below configfs commands

changelog
----------
Changes in v2:
- Used standard GENMASK() and FIELD_GET() to get the major version
  from controller version register.
  link for v1: https://lore.kernel.org/linux-phy/20250514134813.380807-1-pritam.sutar@samsung.com/

Changes in v3:
- Updated dt-bindings for USB2.0 only.
- Added dt-bindings for combo phy.
- Added implementation for combo phy (SS and HS phy).
- Added added DTS nodes for all the phys.
  link for v2: https://lore.kernel.org/linux-phy/20250516102650.2144487-1-pritam.sutar@samsung.com/

Pritam Manohar Sutar (9):
  dt-bindings: phy: samsung,usb3-drd-phy: add ExynosAutov920 HS phy
    compatible
  phy: exyons5-usbdrd: support HS phy for ExynosAutov920
  arm64: dts: exynos: ExynosAutov920: add USB and USB-phy nodes
  dt-bindings: phy: samsung,usb3-drd-phy: add ExynosAutov920 combo HS
    phy
  phy: exyons5-usbdrd: support HS combo phy for ExynosAutov920
  arm64: dts: exynos: ExynosAutov920: add USB and USB HS combo phy nodes
  dt-bindings: phy: samsung,usb3-drd-phy: add ExynosAutov920 combo SS
    phy
  phy: exyons5-usbdrd: support SS combo phy for ExynosAutov920
  arm64: dts: exynos: ExynosAutov920: add USB and USB SS combo phy nodes

 .../bindings/phy/samsung,usb3-drd-phy.yaml    |   6 +
 .../boot/dts/exynos/exynosautov920-sadk.dts   |  53 ++
 .../arm64/boot/dts/exynos/exynosautov920.dtsi | 155 +++++
 drivers/phy/samsung/phy-exynos5-usbdrd.c      | 529 ++++++++++++++++++
 4 files changed, 743 insertions(+)

-- 
2.34.1