arm64: rockchip: Add driver for the io domain
This driver configure the registers in the GRF according to the value of the regulators for the platform. Some IP can run with either 3.0V or 1.8V, if we don't configure them correctly according to the external voltage used they will not work. It's only done at boot time for now and might be needed at runtime for IP like sdmmc. Reviewed by: mmel Tested On: RockPro64, Firefly-RK3399 (gonzo), AIO-3288 (mmel) MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D22854
This commit is contained in:
Emmanuel Vadot
parent
b68dfe6949
commit
6db3672c08
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=356149
@ -331,6 +331,9 @@ device regulator
|
||||
device syscon
|
||||
device aw_syscon
|
||||
|
||||
# IO Domains
|
||||
device rk_iodomain
|
||||
|
||||
# The `bpf' device enables the Berkeley Packet Filter.
|
||||
# Be aware of the administrative consequences of enabling this!
|
||||
# Note that 'bpf' is required for DHCP.
|
||||
|
||||
207
sys/arm64/rockchip/rk_iodomain.c
Normal file
207
sys/arm64/rockchip/rk_iodomain.c
Normal file
@ -0,0 +1,207 @@
|
||||
/*-
|
||||
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
||||
*
|
||||
* Copyright (c) 2019 Emmanuel Vadot <manu@FreeBSD.org>
|
||||
*
|
||||
* 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 <dev/ofw/ofw_bus.h>
|
||||
#include <dev/ofw/ofw_bus_subr.h>
|
||||
|
||||
#include <dev/extres/syscon/syscon.h>
|
||||
#include <dev/extres/regulator/regulator.h>
|
||||
|
||||
#include "syscon_if.h"
|
||||
|
||||
#define RK3288_GRF_IO_VSEL 0x380
|
||||
#define RK3399_GRF_IO_VSEL 0xe640
|
||||
#define RK3399_PMUGRF_IO_VSEL 0x180
|
||||
|
||||
struct rk_iodomain_supply {
|
||||
char *name;
|
||||
uint32_t bit;
|
||||
};
|
||||
|
||||
struct rk_iodomain_conf {
|
||||
struct rk_iodomain_supply *supply;
|
||||
int nsupply;
|
||||
uint32_t grf_reg;
|
||||
};
|
||||
|
||||
struct rk_iodomain_softc {
|
||||
device_t dev;
|
||||
struct syscon *grf;
|
||||
phandle_t node;
|
||||
struct rk_iodomain_conf *conf;
|
||||
};
|
||||
|
||||
static struct rk_iodomain_supply rk3288_supply[] = {
|
||||
{"lcdc-supply", 0},
|
||||
{"dvp-supply", 1},
|
||||
{"flash0-supply", 2},
|
||||
{"flash1-supply", 3},
|
||||
{"wifi-supply", 4},
|
||||
{"bb-supply", 5},
|
||||
{"audio-supply", 6},
|
||||
{"sdcard-supply", 7},
|
||||
{"gpio30-supply", 8},
|
||||
{"gpio1830-supply", 9},
|
||||
};
|
||||
|
||||
static struct rk_iodomain_conf rk3288_conf = {
|
||||
.supply = rk3288_supply,
|
||||
.nsupply = nitems(rk3288_supply),
|
||||
.grf_reg = RK3288_GRF_IO_VSEL,
|
||||
};
|
||||
|
||||
static struct rk_iodomain_supply rk3399_supply[] = {
|
||||
{"bt656-supply", 0},
|
||||
{"audio-supply", 1},
|
||||
{"sdmmc-supply", 2},
|
||||
{"gpio1830-supply", 3},
|
||||
};
|
||||
|
||||
static struct rk_iodomain_conf rk3399_conf = {
|
||||
.supply = rk3399_supply,
|
||||
.nsupply = nitems(rk3399_supply),
|
||||
.grf_reg = RK3399_GRF_IO_VSEL,
|
||||
};
|
||||
|
||||
static struct rk_iodomain_supply rk3399_pmu_supply[] = {
|
||||
{"pmu1830-supply", 9},
|
||||
};
|
||||
|
||||
static struct rk_iodomain_conf rk3399_pmu_conf = {
|
||||
.supply = rk3399_pmu_supply,
|
||||
.nsupply = nitems(rk3399_pmu_supply),
|
||||
.grf_reg = RK3399_PMUGRF_IO_VSEL,
|
||||
};
|
||||
|
||||
static struct ofw_compat_data compat_data[] = {
|
||||
{"rockchip,rk3288-io-voltage-domain", (uintptr_t)&rk3288_conf},
|
||||
{"rockchip,rk3399-io-voltage-domain", (uintptr_t)&rk3399_conf},
|
||||
{"rockchip,rk3399-pmu-io-voltage-domain", (uintptr_t)&rk3399_pmu_conf},
|
||||
{NULL, 0}
|
||||
};
|
||||
|
||||
static void
|
||||
rk_iodomain_set(struct rk_iodomain_softc *sc)
|
||||
{
|
||||
regulator_t supply;
|
||||
uint32_t reg = 0;
|
||||
uint32_t mask = 0;
|
||||
int uvolt, i;
|
||||
|
||||
for (i = 0; i < sc->conf->nsupply; i++) {
|
||||
mask |= (1 << sc->conf->supply[i].bit) << 16;
|
||||
if (regulator_get_by_ofw_property(sc->dev, sc->node,
|
||||
sc->conf->supply[i].name, &supply) == 0) {
|
||||
if (regulator_get_voltage(supply, &uvolt) == 0) {
|
||||
if (uvolt == 1800000)
|
||||
reg |= (1 << sc->conf->supply[i].bit);
|
||||
else if (uvolt != 3000000)
|
||||
device_printf(sc->dev,
|
||||
"%s regulator is at %duV, ignoring\n",
|
||||
sc->conf->supply[i].name, uvolt);
|
||||
} else
|
||||
device_printf(sc->dev, "Cannot get current "
|
||||
"voltage for regulator %s\n",
|
||||
sc->conf->supply[i].name);
|
||||
}
|
||||
}
|
||||
|
||||
SYSCON_WRITE_4(sc->grf, sc->conf->grf_reg, reg | mask);
|
||||
}
|
||||
|
||||
static int
|
||||
rk_iodomain_probe(device_t dev)
|
||||
{
|
||||
|
||||
if (!ofw_bus_status_okay(dev))
|
||||
return (ENXIO);
|
||||
|
||||
if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
|
||||
return (ENXIO);
|
||||
|
||||
device_set_desc(dev, "RockChip IO Voltage Domain");
|
||||
return (BUS_PROBE_DEFAULT);
|
||||
}
|
||||
|
||||
static int
|
||||
rk_iodomain_attach(device_t dev)
|
||||
{
|
||||
struct rk_iodomain_softc *sc;
|
||||
int rv;
|
||||
|
||||
sc = device_get_softc(dev);
|
||||
sc->dev = dev;
|
||||
sc->node = ofw_bus_get_node(dev);
|
||||
|
||||
rv = syscon_get_handle_default(dev, &sc->grf);
|
||||
if (rv != 0) {
|
||||
device_printf(dev, "Cannot get grf handle\n");
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
sc->conf = (struct rk_iodomain_conf *)ofw_bus_search_compatible(dev, compat_data)->ocd_data;
|
||||
rk_iodomain_set(sc);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
rk_iodomain_detach(device_t dev)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static device_method_t rk_iodomain_methods[] = {
|
||||
/* Device interface */
|
||||
DEVMETHOD(device_probe, rk_iodomain_probe),
|
||||
DEVMETHOD(device_attach, rk_iodomain_attach),
|
||||
DEVMETHOD(device_detach, rk_iodomain_detach),
|
||||
|
||||
DEVMETHOD_END
|
||||
};
|
||||
|
||||
static driver_t rk_iodomain_driver = {
|
||||
"rk_iodomain",
|
||||
rk_iodomain_methods,
|
||||
sizeof(struct rk_iodomain_softc),
|
||||
};
|
||||
|
||||
static devclass_t rk_iodomain_devclass;
|
||||
|
||||
EARLY_DRIVER_MODULE(rk_iodomain, simplebus, rk_iodomain_driver,
|
||||
rk_iodomain_devclass, 0, 0, BUS_PASS_SUPPORTDEV + BUS_PASS_ORDER_MIDDLE);
|
||||
@ -305,6 +305,7 @@ arm64/rockchip/rk805.c optional fdt rk805 soc_rockchip_rk3328 | fdt rk805 soc_
|
||||
arm64/rockchip/rk_grf.c optional fdt soc_rockchip_rk3328 | fdt soc_rockchip_rk3399
|
||||
arm64/rockchip/rk_pinctrl.c optional fdt rk_pinctrl soc_rockchip_rk3328 | fdt rk_pinctrl soc_rockchip_rk3399
|
||||
arm64/rockchip/rk_gpio.c optional fdt rk_gpio soc_rockchip_rk3328 | fdt rk_gpio soc_rockchip_rk3399
|
||||
arm64/rockchip/rk_iodomain.c optional fdt rk_iodomain
|
||||
arm64/rockchip/rk_spi.c optional fdt rk_spi
|
||||
arm64/rockchip/rk_usb2phy.c optional fdt rk_usb2phy soc_rockchip_rk3328 | soc_rockchip_rk3399
|
||||
arm64/rockchip/rk_typec_phy.c optional fdt rk_typec_phy soc_rockchip_rk3399
|
||||
|
||||
Loading…
Reference in New Issue
Block a user