pmdomain: imx8mp-blk-ctrl: fix adb handshake handlingHEADmaster

Fix powering the DWC3 USB subsystem which is part of the HSIO BLKCTRL.
Currently we enable the USB clocks and the USB module clock within the
HSIO BLKCTRL. The later get stuck during the first call of
imx8mp_blk_ctrl_power_on() since the parent GPCv2 device is not powered
yet.

Fix this by porting the Linux imx8mp_blk_ctrl::power_nb notifier_block
logic. The Linux driver enable/disable the USB module to propagate the
ADB handshake instead of powering it permanently. The logic is executed
after the parent GPCv2 power domain is powered so we can access the HSIO
BLKCTRL registers.

Fixes: 5cb41f0b62dc ("pmdomain: imx: add i.MX8MP HSIO blk-ctrl driver")
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Acked-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20240403153151.2859387-1-m.felsch@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

0 files changed, 0 insertions, 0 deletions