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Add support for the utmi clock. It's needed on STM32MP15, when using
the integrated full-speed PHY. This clock is an output of USBPHYC, but
HS USBPHYC is not attached as PHY in this case: Full-Speed PHY is directly
managed in dwc2 glue, through GGPIO register. Typical DT when using FS PHY
&usbotg_hs {
compatible = "st,stm32mp15-fsotg", "snps,dwc2";
pinctrl-names = "default";
pinctrl-0 = <&usbotg_hs_pins_a &usbotg_fs_dp_dm_pins_a>;
vbus-supply = <&vbus_otg>;
status = "okay";
};
In this configuration, USBPHYC clock output must be defined, so it can
be properly enabled as a clock provider:
clocks = <&rcc USBO_K>, <&usbphyc>;
clock-names = "otg", "utmi";
Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20230414084137.1050487-4-fabrice.gasnier@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
02329adeae