[PATCH v3 0/3] Register at91 OHCI into DM and add SAMA7 USB PHY's

[Sergiu Moga]

This patch series originates from a bigger patch series:
https://lists.denx.de/pipermail/u-boot/2022-December/502865.html

Register ohci-at91 driver into Driver Model. In order for the VBUS to
stay enabled, a `child_pre_probe` method has been added to overcome the
DM core disabling it in `usb_scan_device`: when the generic `device_probe`
method is called, the pinctrl is processed once again, undoing whatever
changes have been made in our driver's probe method.
In order to enable USB on SAMA7G5 the addition of the USB 2.0 PHY
drivers were required.

v1 -> v2:
- squashed previous 3/4 patch into 2/4 patch
- used *_bulk API's
- re-wrote at91_for_each_port
- use dev_read_u32_default for pdata->ports

v2 -> v3:
- corrected memory leak in the utmi phy driver probe method
- checked dev_read_addr return value
- add clk_disable in case of failure after at91_start_hc
- prefer using if (CONFIG_IS_ENABLED(...))
- add comment regarding why non-DM version must stay


Sergiu Moga (3):
  phy: at91: Add support for the USB 2.0 PHY's of SAMA7
  usb: ohci-at91: Enable OHCI functionality and register into DM
  usb: ohci-at91: Add USB PHY functionality

 drivers/phy/Kconfig              |  10 ++
 drivers/phy/Makefile             |   1 +
 drivers/phy/phy-sama7-usb.c      |  90 +++++++++++++
 drivers/phy/phy-sama7-utmi-clk.c | 216 +++++++++++++++++++++++++++++++
 drivers/usb/host/Kconfig         |   1 +
 drivers/usb/host/ohci-at91.c     | 187 ++++++++++++++++++++++++++
 6 files changed, 505 insertions(+)
 create mode 100644 drivers/phy/phy-sama7-usb.c
 create mode 100644 drivers/phy/phy-sama7-utmi-clk.c

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2.34.1