diff --git a/sys/arm/mv/clk/a37x0_xtal.c b/sys/arm/mv/clk/a37x0_xtal.c new file mode 100644 --- /dev/null +++ b/sys/arm/mv/clk/a37x0_xtal.c @@ -0,0 +1,151 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2021 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 +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include + +#include +#include + +#include "syscon_if.h" + +#define BIT(x) (1 << (x)) + +#define NB_GPIO1_PIN_LT_L 0x8 +#define NB_GPIO1_MPP1_9 BIT(9) + +struct a37x0_xtal_softc { + device_t dev; + struct clkdom *clkdom; +}; + +static devclass_t a37x0_xtal_devclass; + +static int a37x0_xtal_attach(device_t dev); +static int a37x0_xtal_detach(device_t dev); +static int a37x0_xtal_probe(device_t dev); + +static device_method_t a37x0_xtal_methods [] = { + DEVMETHOD(device_probe, a37x0_xtal_probe), + DEVMETHOD(device_attach, a37x0_xtal_attach), + DEVMETHOD(device_detach, a37x0_xtal_detach), + DEVMETHOD_END +}; + +static driver_t a37x0_xtal_driver = { + "a37x0-xtal", + a37x0_xtal_methods, + sizeof(struct a37x0_xtal_softc) +}; + +EARLY_DRIVER_MODULE(a37x0_xtal, simplebus, a37x0_xtal_driver, + a37x0_xtal_devclass, 0, 0, BUS_PASS_TIMER + BUS_PASS_ORDER_EARLY); + +static int +a37x0_xtal_attach(device_t dev) +{ + struct a37x0_xtal_softc *sc; + struct clk_fixed_def def; + struct syscon *syscon; + phandle_t node; + uint32_t reg; + int error; + + node = ofw_bus_get_node(dev); + sc = device_get_softc(dev); + + def.clkdef.name = "armada-3700-xtal"; + def.clkdef.parent_names = NULL; + def.clkdef.parent_cnt = 0; + def.clkdef.id = 1; + def.mult = 0; + def.div = 0; + + if (SYSCON_GET_HANDLE(dev, &syscon) != 0 || syscon == NULL){ + device_printf(dev, "Cannot get syscon driver handle\n"); + return (ENXIO); + } + + reg = SYSCON_READ_4(syscon, NB_GPIO1_PIN_LT_L); + if (reg & NB_GPIO1_MPP1_9) + def.freq = 40000000; + else + def.freq = 25000000; + + sc->clkdom = clkdom_create(dev); + error = clknode_fixed_register(sc->clkdom, &def); + if (error){ + device_printf(dev, "Cannot register clock node\n"); + return (ENXIO); + } + + error = clkdom_finit(sc->clkdom); + if (error){ + device_printf(dev, "Cannot finalize clock domain initialization\n"); + return (ENXIO); + } + + if (bootverbose) + clkdom_dump(sc->clkdom); + + return (0); +} + +static int +a37x0_xtal_probe(device_t dev) +{ + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (!ofw_bus_is_compatible(dev, "marvell,armada-3700-xtal-clock")) + return (ENXIO); + + device_set_desc(dev, "Marvell Armada 3700 Oscillator"); + return (BUS_PROBE_DEFAULT); +} + +static int +a37x0_xtal_detach(device_t dev) +{ + + return (EBUSY); +} diff --git a/sys/arm64/conf/std.marvell b/sys/arm64/conf/std.marvell --- a/sys/arm64/conf/std.marvell +++ b/sys/arm64/conf/std.marvell @@ -53,5 +53,8 @@ options FDT device acpi +# Clocks +device a37x0_xtal # Marvell xtal-clock + # DTBs makeoptions MODULES_EXTRA+="dtb/mv" diff --git a/sys/conf/files.arm64 b/sys/conf/files.arm64 --- a/sys/conf/files.arm64 +++ b/sys/conf/files.arm64 @@ -456,6 +456,7 @@ arm/mv/a37x0_gpio.c optional a37x0_gpio gpio fdt arm/mv/a37x0_iic.c optional a37x0_iic iicbus fdt arm/mv/a37x0_spi.c optional a37x0_spi spibus fdt +arm/mv/clk/a37x0_xtal.c optional a37x0_xtal clk fdt syscon arm/mv/armada38x/armada38x_rtc.c optional mv_rtc fdt arm/mv/gpio.c optional mv_gpio fdt arm/mv/mvebu_gpio.c optional mv_gpio fdt