[PATCH 0/2] phy: amlogic: meson-g12a-usb2: add S4 support

[neil.armstrong at linaro.org]

On 10/25/26 20:22, christian.koever-draxl at student.uibk.ac.at wrote:
> From: Christian Stefan Kövér-Draxl <ckoever at outlook.de>
> 
> The S4 USB2 PHY is the A1 design with different analog trims and an
> extra disconnect threshold; without its PMA update bit the host sees no
> root ports. Add a compatible and the S4 settings from the vendor driver.
> 
> Tested: both host ports enumerate keyboards, mice, hubs and storage.
> 
> Tool use (Documentation/process/generated-content.rst):
> This work was done with the help of an AI coding assistant, Claude
> (Anthropic), used through Claude Code over many sessions. It did a large
> part of the hands-on work: it read the vendor kernel and the firmware
> interfaces, probed registers on the board, drafted the code and the
> changelogs, and ran the builds, checkpatch, dt_binding_check and the
> tests on the hardware. I directed the work, reviewed every change and
> the final patches, and take responsibility for them. There is no single
> prompt to quote; the sessions were of the form "find out why X fails on
> this board, fix it, test it on the box".
> 
> Tested on an Amediatech X98Q TV box (Amlogic S905W2, S4 family, 2 GiB),
> vendor U-Boot and BL31/OP-TEE, Linux 7.3 plus this work.
> 
> Christian Stefan Kövér-Draxl (2):
>    dt-bindings: phy: amlogic,g12a-usb2-phy: add S4 compatible
>    phy: amlogic: meson-g12a-usb2: add S4 support
> 
>   .../bindings/phy/amlogic,g12a-usb2-phy.yaml   |  1 +
>   drivers/phy/amlogic/phy-meson-g12a-usb2.c     | 65 ++++++++++++++-----
>   2 files changed, 49 insertions(+), 17 deletions(-)
> 
> 
> base-commit: 7be4bc52fd9e0e55dc9a2e0232b89427d2c4b614

Acked-by: Neil Armstrong <neil.armstrong at linaro.org>

Thanks,
Neil