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