Driver provides probe and attach functions for LS1046A clockgen and passes configuration information to QorIQ clockgen class. It may be used as a reference implementation for different QorIQ clockgen devices. Submitted by: Dawid Gorecki <dgr@semihalf.com> Reviewed by: mmel, manu Obtained from: Semihalf Sponsored by: Alstom Group Differential Revision: https://reviews.freebsd.org/D24352
256 lines
6.1 KiB
C
256 lines
6.1 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2020 Alstom Group.
|
|
* Copyright (c) 2020 Semihalf.
|
|
*
|
|
* 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/bus.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/rman.h>
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/fdt/simplebus.h>
|
|
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
|
|
#include <dev/extres/clk/clk_fixed.h>
|
|
|
|
#include <arm64/qoriq/clk/qoriq_clkgen.h>
|
|
|
|
static uint8_t ls1046a_pltfrm_pll_divs[] = {
|
|
2, 4, 0
|
|
};
|
|
|
|
static struct qoriq_clk_pll_def ls1046a_pltfrm_pll = {
|
|
.clkdef = {
|
|
.name = "ls1046a_platform_pll",
|
|
.id = QORIQ_CLK_ID(QORIQ_TYPE_PLATFORM_PLL, 0),
|
|
.flags = 0
|
|
},
|
|
.offset = 0xC00,
|
|
.shift = 1,
|
|
.mask = 0x7E,
|
|
.dividers = ls1046a_pltfrm_pll_divs,
|
|
.flags = 0
|
|
};
|
|
|
|
static const uint8_t ls1046a_cga1_pll_divs[] = {
|
|
2, 3, 4, 0
|
|
};
|
|
|
|
static struct qoriq_clk_pll_def ls1046a_cga1_pll = {
|
|
.clkdef = {
|
|
.name = "ls1046a_cga_pll1",
|
|
.id = QORIQ_CLK_ID(QORIQ_TYPE_INTERNAL, 0),
|
|
.flags = 0
|
|
},
|
|
.offset = 0x800,
|
|
.shift = 1,
|
|
.mask = 0x1FE,
|
|
.dividers = ls1046a_cga1_pll_divs,
|
|
.flags = QORIQ_CLK_PLL_HAS_KILL_BIT
|
|
};
|
|
|
|
static struct qoriq_clk_pll_def ls1046a_cga2_pll = {
|
|
.clkdef = {
|
|
.name = "ls1046a_cga_pll2",
|
|
.id = QORIQ_CLK_ID(QORIQ_TYPE_INTERNAL, 20),
|
|
.flags = 0
|
|
},
|
|
.offset = 0x820,
|
|
.shift = 1,
|
|
.mask = 0x1FE,
|
|
.dividers = ls1046a_cga1_pll_divs,
|
|
.flags = QORIQ_CLK_PLL_HAS_KILL_BIT
|
|
};
|
|
|
|
static struct qoriq_clk_pll_def *ls1046a_cga_plls[] = {
|
|
&ls1046a_cga1_pll,
|
|
&ls1046a_cga2_pll
|
|
};
|
|
|
|
static const char *ls1046a_cmux0_parent_names[] = {
|
|
"ls1046a_cga_pll1",
|
|
NULL,
|
|
"ls1046a_cga_pll1_div2",
|
|
NULL,
|
|
"ls1046a_cga_pll2",
|
|
NULL,
|
|
"ls1046a_cga_pll2_div2"
|
|
};
|
|
|
|
static struct clk_mux_def ls1046a_cmux0 = {
|
|
.clkdef = {
|
|
.name = "ls1046a_cmux0",
|
|
.id = QORIQ_CLK_ID(QORIQ_TYPE_CMUX, 0),
|
|
.parent_names = ls1046a_cmux0_parent_names,
|
|
.parent_cnt = nitems(ls1046a_cmux0_parent_names),
|
|
.flags = 0
|
|
},
|
|
.offset = 0,
|
|
.shift = 27,
|
|
.width = 4,
|
|
.mux_flags = 0
|
|
};
|
|
|
|
static const char *ls1046a_hwaccel1_parent_names[] = {
|
|
NULL,
|
|
NULL,
|
|
"ls1046a_cga_pll1_div2",
|
|
"ls1046a_cga_pll1_div3",
|
|
"ls1046a_cga_pll1_div4",
|
|
"ls1046a_platform_pll",
|
|
"ls1046a_cga_pll2_div2",
|
|
"ls1046a_cga_pll2_div3"
|
|
};
|
|
|
|
static const char *ls1046a_hwaccel2_parent_names[] = {
|
|
NULL,
|
|
"ls1046a_cga_pll2",
|
|
"ls1046a_cga_pll2_div2",
|
|
"ls1046a_cga_pll2_div3",
|
|
NULL,
|
|
NULL,
|
|
"ls1046a_cga_pll1_div2"
|
|
};
|
|
|
|
static struct clk_mux_def ls1046a_hwaccel1 = {
|
|
.clkdef = {
|
|
.name = "ls1046a_hwaccel1",
|
|
.id = QORIQ_CLK_ID(QORIQ_TYPE_HWACCEL, 0),
|
|
.parent_names = ls1046a_hwaccel1_parent_names,
|
|
.parent_cnt = nitems(ls1046a_hwaccel1_parent_names),
|
|
.flags = 0
|
|
},
|
|
.offset = 0x10,
|
|
.shift = 27,
|
|
.width = 4,
|
|
.mux_flags = 0
|
|
};
|
|
|
|
static struct clk_mux_def ls1046a_hwaccel2 = {
|
|
.clkdef = {
|
|
.name = "ls1046a_hwaccel2",
|
|
.id = QORIQ_CLK_ID(QORIQ_TYPE_HWACCEL, 1),
|
|
.parent_names = ls1046a_hwaccel2_parent_names,
|
|
.parent_cnt = nitems(ls1046a_hwaccel2_parent_names),
|
|
.flags = 0
|
|
},
|
|
.offset = 0x30,
|
|
.shift = 27,
|
|
.width = 4,
|
|
.mux_flags = 0
|
|
};
|
|
|
|
static struct clk_mux_def *ls1046a_mux_nodes[] = {
|
|
&ls1046a_cmux0,
|
|
&ls1046a_hwaccel1,
|
|
&ls1046a_hwaccel2
|
|
};
|
|
|
|
const char *ls1046a_fman_srcs[] = {
|
|
"ls1046a_hwaccel1"
|
|
};
|
|
|
|
static int ls1046a_clkgen_probe(device_t);
|
|
static int ls1046a_clkgen_attach(device_t);
|
|
|
|
static device_method_t ls1046a_clkgen_methods[] = {
|
|
DEVMETHOD(device_probe, ls1046a_clkgen_probe),
|
|
DEVMETHOD(device_attach, ls1046a_clkgen_attach),
|
|
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
DEFINE_CLASS_1(ls1046a_clkgen, ls1046a_clkgen_driver, ls1046a_clkgen_methods,
|
|
sizeof(struct qoriq_clkgen_softc), qoriq_clkgen_driver);
|
|
|
|
static devclass_t ls1046a_clkgen_devclass;
|
|
|
|
EARLY_DRIVER_MODULE(ls1046a_clkgen, simplebus, ls1046a_clkgen_driver,
|
|
ls1046a_clkgen_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
|
|
|
|
static int
|
|
ls1046a_fman_init(device_t dev)
|
|
{
|
|
struct qoriq_clkgen_softc *sc;
|
|
struct clk_fixed_def def;
|
|
int error;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
def.clkdef.name = "ls1046a_fman",
|
|
def.clkdef.id = QORIQ_CLK_ID(QORIQ_TYPE_FMAN, 0),
|
|
def.clkdef.parent_names = ls1046a_fman_srcs;
|
|
def.clkdef.parent_cnt = nitems(ls1046a_fman_srcs);
|
|
def.clkdef.flags = 0;
|
|
def.freq = 0;
|
|
def.mult = 1;
|
|
def.div = 1;
|
|
def.fixed_flags = 0;
|
|
|
|
error = clknode_fixed_register(sc->clkdom, &def);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
ls1046a_clkgen_probe(device_t dev)
|
|
{
|
|
|
|
if (!ofw_bus_status_okay(dev))
|
|
return (ENXIO);
|
|
|
|
if(!ofw_bus_is_compatible(dev, "fsl,ls1046a-clockgen"))
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, "LS1046A clockgen");
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
|
|
static int
|
|
ls1046a_clkgen_attach(device_t dev)
|
|
{
|
|
struct qoriq_clkgen_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
sc->pltfrm_pll_def = &ls1046a_pltfrm_pll;
|
|
sc->cga_pll = ls1046a_cga_plls;
|
|
sc->cga_pll_num = nitems(ls1046a_cga_plls);
|
|
sc->mux = ls1046a_mux_nodes;
|
|
sc->mux_num = nitems(ls1046a_mux_nodes);
|
|
sc->init_func = ls1046a_fman_init;
|
|
sc->flags = 0;
|
|
|
|
return (qoriq_clkgen_attach(dev));
|
|
}
|