ea8b18848f
This code initializes the GMAC clock and sets the pin mux to rgmii. It also override the if_dwc defaults to set the alternate descriptor type and MII clock used on A20. Tested on cubieboard2 and banana pi.
108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/*-
|
|
* Copyright (c) 2015 Luiz Otavio O Souza <loos@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/dwc/if_dwc.h>
|
|
#include <dev/dwc/if_dwcvar.h>
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
|
|
#include <arm/allwinner/a10_clk.h>
|
|
#include <arm/allwinner/a10_gpio.h>
|
|
|
|
#include "if_dwc_if.h"
|
|
|
|
static int
|
|
a20_if_dwc_probe(device_t dev)
|
|
{
|
|
|
|
if (!ofw_bus_status_okay(dev))
|
|
return (ENXIO);
|
|
if (!ofw_bus_is_compatible(dev, "allwinner,sun7i-a20-gmac"))
|
|
return (ENXIO);
|
|
device_set_desc(dev, "A20 Gigabit Ethernet Controller");
|
|
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
|
|
static int
|
|
a20_if_dwc_init(device_t dev)
|
|
{
|
|
|
|
/* Activate GMAC clock and set the pin mux to rgmii. */
|
|
if (a10_clk_gmac_activate(ofw_bus_get_node(dev)) != 0 ||
|
|
a10_gpio_ethernet_activate(A10_GPIO_FUNC_RGMII)) {
|
|
device_printf(dev, "could not activate gmac module\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
a20_if_dwc_mac_type(device_t dev)
|
|
{
|
|
|
|
return (DWC_GMAC_ALT_DESC);
|
|
}
|
|
|
|
static int
|
|
a20_if_dwc_mii_clk(device_t dev)
|
|
{
|
|
|
|
return (GMAC_MII_CLK_150_250M_DIV102);
|
|
}
|
|
|
|
static device_method_t a20_dwc_methods[] = {
|
|
DEVMETHOD(device_probe, a20_if_dwc_probe),
|
|
|
|
DEVMETHOD(if_dwc_init, a20_if_dwc_init),
|
|
DEVMETHOD(if_dwc_mac_type, a20_if_dwc_mac_type),
|
|
DEVMETHOD(if_dwc_mii_clk, a20_if_dwc_mii_clk),
|
|
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
static devclass_t a20_dwc_devclass;
|
|
|
|
extern driver_t dwc_driver;
|
|
|
|
DEFINE_CLASS_1(dwc, a20_dwc_driver, a20_dwc_methods, sizeof(struct dwc_softc),
|
|
dwc_driver);
|
|
DRIVER_MODULE(a20_dwc, simplebus, a20_dwc_driver, a20_dwc_devclass, 0, 0);
|
|
|
|
MODULE_DEPEND(a20_dwc, dwc, 1, 1, 1);
|