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/* $OpenBSD: imxdwusb.c,v 1.5 2022/04/06 18:59:28 naddy Exp $ */
/*
* Copyright (c) 2017, 2018 Mark Kettenis <kettenis@openbsd.org>
* Copyright (c) 2020 Patrick Wildt <patrick@blueri.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/fdt.h>
#include <arm64/dev/simplebusvar.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_clock.h>
#include <dev/ofw/ofw_power.h>
#include <dev/ofw/fdt.h>
/*
* This driver is based on preliminary device tree bindings and will
* almost certainly need changes once the official bindings land in
* mainline Linux. Support for these preliminary bindings will be
* dropped as soon as official bindings are available.
*/
struct imxdwusb_softc {
struct simplebus_softc sc_sbus;
};
int imxdwusb_match(struct device *, void *, void *);
void imxdwusb_attach(struct device *, struct device *, void *);
const struct cfattach imxdwusb_ca = {
sizeof(struct imxdwusb_softc), imxdwusb_match, imxdwusb_attach
};
struct cfdriver imxdwusb_cd = {
NULL, "imxdwusb", DV_DULL
};
int
imxdwusb_match(struct device *parent, void *match, void *aux)
{
struct fdt_attach_args *faa = aux;
return OF_is_compatible(faa->fa_node, "fsl,imx8mp-dwc3");
}
void
imxdwusb_attach(struct device *parent, struct device *self, void *aux)
{
struct imxdwusb_softc *sc = (struct imxdwusb_softc *)self;
struct fdt_attach_args *faa = aux;
power_domain_enable(faa->fa_node);
clock_enable_all(faa->fa_node);
reset_deassert_all(faa->fa_node);
simplebus_attach(parent, &sc->sc_sbus.sc_dev, faa);
}
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