If regmap_update_bits() fails in lpc18xx_usb_otg_phy_power_on(),
lpc->clk is left enabled.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Changing the frequency of the USB clock must be done before the
PLL is powered on (prepared). This matters when the USB clock
is not setup by either boot ROM or boot loader. Reorder the
function calls to adhere to the order noted in the user manual.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Add PHY driver for the internal USB OTG PHY found on NXP
LPC18xx and LPC43xx devices. This driver takes care of
enabling the PHY in CREG (syscon) and setting the required
clock frequency.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Alexey Khoroshilov
Joachim Eastwood