f69c06c303
This patch ensures only minimal level of compatibility necessary to boot on RK3288 based boards. GPIO and pinctrl interaction, missing in current implementation, will be improved by own patch in the near future. MFC after: 2 weeks MFC with: r351452
81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2018 Emmanuel Vadot <manu@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/rman.h>
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#include <machine/bus.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/extres/syscon/syscon.h>
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#include <dev/fdt/simple_mfd.h>
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static struct ofw_compat_data compat_data[] = {
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{"rockchip,rk3288-grf", 1},
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{"rockchip,rk3328-grf", 1},
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{"rockchip,rk3399-grf", 1},
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{"rockchip,rk3399-pmugrf", 1},
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{NULL, 0}
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};
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static int
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rk_grf_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
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return (ENXIO);
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device_set_desc(dev, "RockChip General Register Files");
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return (BUS_PROBE_DEFAULT);
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}
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static device_method_t rk_grf_methods[] = {
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DEVMETHOD(device_probe, rk_grf_probe),
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DEVMETHOD_END
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};
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DEFINE_CLASS_1(rk_grf, rk_grf_driver, rk_grf_methods,
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sizeof(struct simple_mfd_softc), simple_mfd_driver);
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static devclass_t rk_grf_devclass;
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EARLY_DRIVER_MODULE(rk_grf, simplebus, rk_grf_driver, rk_grf_devclass,
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0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
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MODULE_VERSION(rk_grf, 1);
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