This is split off of a larger series[1] that describes the USB and DP topology of ARM chromebooks such as Trogdor (sc7180-trogdor.dtsi). These patches can land at any time, so I'm sending them split out to hopefully focus review and land them earlier. The first patch updates the realtek binding to describe the downstream facing ports (it has 4 ports). Child devices can also be hard-wired to the hub, in which case the binding allows those devices to only have reg properties with the valid port numbers (1 through 4). The second patch sets the connect_type member of the usb port to reflect what the DT binding indicates. More details are in the patch, but the general goal is to set the connect_type based on DT so that it can be queried by userspace in sysfs. ChromeOS wants to know if a usb device is hard-wired or not so it can apply more or less security to the device. Changes from v1 (https://lore.kernel.org/r/20240210070934.2549994-4-swboyd@xxxxxxxxxxxx): * Moved the code to of.c to keep it tidy * Updated the check for child nodes to only be for usb devices or graph binding in case of things like HSIC where a child node 'ulpi' could exist * Fixed the binding to have #size-cells and #address-cells Stephen Boyd (2): dt-bindings: usb: Add downstream facing ports to realtek binding usb: core: Set connect_type of ports based on DT node .../bindings/usb/realtek,rts5411.yaml | 55 ++++++++++++++ drivers/usb/core/of.c | 71 +++++++++++++++++++ drivers/usb/core/port.c | 2 + include/linux/usb/of.h | 7 ++ 4 files changed, 135 insertions(+) Cc: Conor Dooley <conor+dt@xxxxxxxxxx> Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx> Cc: <linux-usb@xxxxxxxxxxxxxxx> Cc: maciek swiech <drmasquatch@xxxxxxxxxx> Cc: Matthias Kaehlcke <mka@xxxxxxxxxxxx> [1] https://lore.kernel.org/r/20240210070934.2549994-1-swboyd@xxxxxxxxxxxx base-commit: 6613476e225e090cc9aad49be7fa504e290dd33d -- https://chromeos.dev
