diff options
Diffstat (limited to 'sys/arm/nvidia/tegra124/tegra124_car.c')
-rw-r--r-- | sys/arm/nvidia/tegra124/tegra124_car.c | 603 |
1 files changed, 603 insertions, 0 deletions
diff --git a/sys/arm/nvidia/tegra124/tegra124_car.c b/sys/arm/nvidia/tegra124/tegra124_car.c new file mode 100644 index 000000000000..89f3e392c0bc --- /dev/null +++ b/sys/arm/nvidia/tegra124/tegra124_car.c @@ -0,0 +1,603 @@ +/*- + * Copyright (c) 2016 Michal Meloun <mmel@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/kobj.h> +#include <sys/module.h> +#include <sys/malloc.h> +#include <sys/rman.h> +#include <sys/lock.h> +#include <sys/mutex.h> + +#include <machine/bus.h> +#include <machine/cpu.h> + +#include <dev/extres/clk/clk_div.h> +#include <dev/extres/clk/clk_fixed.h> +#include <dev/extres/clk/clk_gate.h> +#include <dev/extres/clk/clk_mux.h> +#include <dev/extres/hwreset/hwreset.h> +#include <dev/ofw/openfirm.h> +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> + +#include <dt-bindings/clock/tegra124-car.h> + +#include "clkdev_if.h" +#include "hwreset_if.h" +#include "tegra124_car.h" + +static struct ofw_compat_data compat_data[] = { + {"nvidia,tegra124-car", 1}, + {NULL, 0}, +}; + +#define PLIST(x) static const char *x[] + +/* Pure multiplexer. */ +#define MUX(_id, cname, plists, o, s, w) \ +{ \ + .clkdef.id = _id, \ + .clkdef.name = cname, \ + .clkdef.parent_names = plists, \ + .clkdef.parent_cnt = nitems(plists), \ + .clkdef.flags = CLK_NODE_STATIC_STRINGS, \ + .offset = o, \ + .shift = s, \ + .width = w, \ +} + +/* Fractional divider (7.1). */ +#define DIV7_1(_id, cname, plist, o, s) \ +{ \ + .clkdef.id = _id, \ + .clkdef.name = cname, \ + .clkdef.parent_names = (const char *[]){plist}, \ + .clkdef.parent_cnt = 1, \ + .clkdef.flags = CLK_NODE_STATIC_STRINGS, \ + .offset = o, \ + .i_shift = (s) + 1, \ + .i_width = 7, \ + .f_shift = s, \ + .f_width = 1, \ +} + +/* Integer divider. */ +#define DIV(_id, cname, plist, o, s, w, f) \ +{ \ + .clkdef.id = _id, \ + .clkdef.name = cname, \ + .clkdef.parent_names = (const char *[]){plist}, \ + .clkdef.parent_cnt = 1, \ + .clkdef.flags = CLK_NODE_STATIC_STRINGS, \ + .offset = o, \ + .i_shift = s, \ + .i_width = w, \ + .div_flags = f, \ +} + +/* Gate in PLL block. */ +#define GATE_PLL(_id, cname, plist, o, s) \ +{ \ + .clkdef.id = _id, \ + .clkdef.name = cname, \ + .clkdef.parent_names = (const char *[]){plist}, \ + .clkdef.parent_cnt = 1, \ + .clkdef.flags = CLK_NODE_STATIC_STRINGS, \ + .offset = o, \ + .shift = s, \ + .mask = 3, \ + .on_value = 3, \ + .off_value = 0, \ +} + +/* Standard gate. */ +#define GATE(_id, cname, plist, o, s) \ +{ \ + .clkdef.id = _id, \ + .clkdef.name = cname, \ + .clkdef.parent_names = (const char *[]){plist}, \ + .clkdef.parent_cnt = 1, \ + .clkdef.flags = CLK_NODE_STATIC_STRINGS, \ + .offset = o, \ + .shift = s, \ + .mask = 1, \ + .on_value = 1, \ + .off_value = 0, \ +} + +/* Inverted gate. */ +#define GATE_INV(_id, cname, plist, o, s) \ +{ \ + .clkdef.id = _id, \ + .clkdef.name = cname, \ + .clkdef.parent_names = (const char *[]){plist}, \ + .clkdef.parent_cnt = 1, \ + .clkdef.flags = CLK_NODE_STATIC_STRINGS, \ + .offset = o, \ + .shift = s, \ + .mask = 1, \ + .on_value = 0, \ + .off_value = 1, \ +} + +/* Fixed rate clock. */ +#define FRATE(_id, cname, _freq) \ +{ \ + .clkdef.id = _id, \ + .clkdef.name = cname, \ + .clkdef.parent_names = NULL, \ + .clkdef.parent_cnt = 0, \ + .clkdef.flags = CLK_NODE_STATIC_STRINGS, \ + .freq = _freq, \ +} + +/* Fixed rate multipier/divider. */ +#define FACT(_id, cname, pname, _mult, _div) \ +{ \ + .clkdef.id = _id, \ + .clkdef.name = cname, \ + .clkdef.parent_names = (const char *[]){pname}, \ + .clkdef.parent_cnt = 1, \ + .clkdef.flags = CLK_NODE_STATIC_STRINGS, \ + .mult = _mult, \ + .div = _div, \ +} + +static uint32_t osc_freqs[16] = { + [0] = 13000000, + [1] = 16800000, + [4] = 19200000, + [5] = 38400000, + [8] = 12000000, + [9] = 48000000, + [12] = 260000000, +}; + +/* Parent lists. */ +PLIST(mux_pll_srcs) = {"osc_div_clk", NULL, "pllP_out0", NULL}; /* FIXME */ +PLIST(mux_plle_src1) = {"osc_div_clk", "pllP_out0"}; +PLIST(mux_plle_src) = {"pllE_src1", "pllREFE_out"}; +PLIST(mux_plld_out0_plld2_out0) = {"pllD_out0", "pllD2_out0"}; +PLIST(mux_xusb_hs) = {"xusb_ss_div2", "pllU_60"}; +PLIST(mux_xusb_ss) = {"pc_xusb_ss", "osc_div_clk"}; + +/* Clocks ajusted online. */ +static struct clk_fixed_def fixed_clk_m = + FRATE(TEGRA124_CLK_CLK_M, "clk_m", 12000000); +static struct clk_fixed_def fixed_osc_div_clk = + FACT(0, "osc_div_clk", "clk_m", 1, 1); + +static struct clk_fixed_def tegra124_fixed_clks[] = { + /* Core clocks. */ + FRATE(0, "clk_s", 32768), + FACT(0, "clk_m_div2", "clk_m", 1, 2), + FACT(0, "clk_m_div4", "clk_m", 1, 3), + FACT(0, "pllU_60", "pllU_out", 1, 8), + FACT(0, "pllU_48", "pllU_out", 1, 10), + FACT(0, "pllU_12", "pllU_out", 1, 40), + FACT(TEGRA124_CLK_PLL_D_OUT0, "pllD_out0", "pllD_out", 1, 2), + FACT(TEGRA124_CLK_PLL_D2_OUT0, "pllD2_out0", "pllD2_out", 1, 1), + FACT(0, "pllX_out0", "pllX_out", 1, 2), + FACT(0, "pllC_UD", "pllC_out0", 1, 1), + FACT(0, "pllM_UD", "pllM_out0", 1, 1), + + /* Audio clocks. */ + FRATE(0, "audio0", 10000000), + FRATE(0, "audio1", 10000000), + FRATE(0, "audio2", 10000000), + FRATE(0, "audio3", 10000000), + FRATE(0, "audio4", 10000000), + FRATE(0, "ext_vimclk", 10000000), + + /* XUSB */ + FACT(TEGRA124_CLK_XUSB_SS_DIV2, "xusb_ss_div2", "xusb_ss", 1, 2), + +}; + +static struct clk_mux_def tegra124_mux_clks[] = { + /* Core clocks. */ + MUX(0, "pllD2_src", mux_pll_srcs, PLLD2_BASE, 25, 2), + MUX(0, "pllDP_src", mux_pll_srcs, PLLDP_BASE, 25, 2), + MUX(0, "pllC4_src", mux_pll_srcs, PLLC4_BASE, 25, 2), + MUX(0, "pllE_src1", mux_plle_src1, PLLE_AUX, 2, 1), + MUX(0, "pllE_src", mux_plle_src, PLLE_AUX, 28, 1), + + /* Base peripheral clocks. */ + MUX(0, "dsia_mux", mux_plld_out0_plld2_out0, PLLD_BASE, 25, 1), + MUX(0, "dsib_mux", mux_plld_out0_plld2_out0, PLLD2_BASE, 25, 1), + + /* USB. */ + MUX(TEGRA124_CLK_XUSB_HS_SRC, "xusb_hs", mux_xusb_hs, CLK_SOURCE_XUSB_SS, 25, 1), + MUX(0, "xusb_ss_mux", mux_xusb_ss, CLK_SOURCE_XUSB_SS, 24, 1), + +}; + +static struct clk_gate_def tegra124_gate_clks[] = { + /* Core clocks. */ + GATE_PLL(0, "pllC_out1", "pllC_out1_div", PLLC_OUT, 0), + GATE_PLL(0, "pllM_out1", "pllM_out1_div", PLLM_OUT, 0), + GATE_PLL(TEGRA124_CLK_PLL_U_480M, "pllU_480", "pllU_out", PLLU_BASE, 22), + GATE_PLL(0, "pllP_outX0", "pllP_outX0_div", PLLP_RESHIFT, 0), + GATE_PLL(0, "pllP_out1", "pllP_out1_div", PLLP_OUTA, 0), + GATE_PLL(0, "pllP_out2", "pllP_out2_div", PLLP_OUTA, 16), + GATE_PLL(0, "pllP_out3", "pllP_out3_div", PLLP_OUTB, 0), + GATE_PLL(0, "pllP_out4", "pllP_out4_div", PLLP_OUTB, 16), + GATE_PLL(0, "pllP_out5", "pllP_out5_div", PLLP_OUTC, 16), + GATE_PLL(0, "pllA_out0", "pllA_out1_div", PLLA_OUT, 0), + + /* Base peripheral clocks. */ + GATE(TEGRA124_CLK_CML0, "cml0", "pllE_out0", PLLE_AUX, 0), + GATE(TEGRA124_CLK_CML1, "cml1", "pllE_out0", PLLE_AUX, 1), + GATE_INV(TEGRA124_CLK_HCLK, "hclk", "hclk_div", CLK_SYSTEM_RATE, 7), + GATE_INV(TEGRA124_CLK_PCLK, "pclk", "pclk_div", CLK_SYSTEM_RATE, 3), +}; + +static struct clk_div_def tegra124_div_clks[] = { + /* Core clocks. */ + DIV7_1(0, "pllC_out1_div", "pllC_out0", PLLC_OUT, 2), + DIV7_1(0, "pllM_out1_div", "pllM_out0", PLLM_OUT, 8), + DIV7_1(0, "pllP_outX0_div", "pllP_out0", PLLP_RESHIFT, 2), + DIV7_1(0, "pllP_out1_div", "pllP_out0", PLLP_OUTA, 8), + DIV7_1(0, "pllP_out2_div", "pllP_out0", PLLP_OUTA, 24), + DIV7_1(0, "pllP_out3_div", "pllP_out0", PLLP_OUTB, 8), + DIV7_1(0, "pllP_out4_div", "pllP_out0", PLLP_OUTB, 24), + DIV7_1(0, "pllP_out5_div", "pllP_out0", PLLP_OUTC, 24), + DIV7_1(0, "pllA_out1_div", "pllA_out", PLLA_OUT, 8), + + /* Base peripheral clocks. */ + DIV(0, "hclk_div", "sclk", CLK_SYSTEM_RATE, 4, 2, 0), + DIV(0, "pclk_div", "hclk", CLK_SYSTEM_RATE, 0, 2, 0), +}; + +/* Initial setup table. */ +static struct tegra124_init_item clk_init_table[] = { + /* clock, partent, frequency, enable */ + {"uarta", "pllP_out0", 408000000, 0}, + {"uartb", "pllP_out0", 408000000, 0}, + {"uartc", "pllP_out0", 408000000, 0}, + {"uartd", "pllP_out0", 408000000, 0}, + {"pllA_out", NULL, 282240000, 1}, + {"pllA_out0", NULL, 11289600, 1}, + {"extperiph1", "pllA_out0", 0, 1}, + {"i2s0", "pllA_out0", 11289600, 0}, + {"i2s1", "pllA_out0", 11289600, 0}, + {"i2s2", "pllA_out0", 11289600, 0}, + {"i2s3", "pllA_out0", 11289600, 0}, + {"i2s4", "pllA_out0", 11289600, 0}, + {"vde", "pllP_out0", 0, 0}, + {"host1x", "pllP_out0", 136000000, 1}, + {"sclk", "pllP_out2", 102000000, 1}, + {"dvfs_soc", "pllP_out0", 51000000, 1}, + {"dvfs_ref", "pllP_out0", 51000000, 1}, + {"pllC_out0", NULL, 600000000, 0}, + {"pllC_out1", NULL, 100000000, 0}, + {"spi4", "pllP_out0", 12000000, 1}, + {"tsec", "pllC3_out0", 0, 0}, + {"msenc", "pllC3_out0", 0, 0}, + {"pllREFE_out", NULL, 672000000, 0}, + {"pc_xusb_ss", "pllU_480", 120000000, 0}, + {"xusb_ss", "pc_xusb_ss", 120000000, 0}, + {"pc_xusb_fs", "pllU_48", 48000000, 0}, + {"xusb_hs", "pllU_60", 60000000, 0}, + {"pc_xusb_falcon", "pllREFE_out", 224000000, 0}, + {"xusb_core_host", "pllREFE_out", 112000000, 0}, + {"sata", "pllP_out0", 102000000, 0}, + {"sata_oob", "pllP_out0", 204000000, 0}, + {"sata_cold", NULL, 0, 1}, + {"emc", NULL, 0, 1}, + {"mselect", NULL, 0, 1}, + {"csite", NULL, 0, 1}, + {"tsensor", "clk_m", 400000, 0}, + + /* tegra124 only*/ + {"soc_therm", "pllP_out0", 51000000, 0}, + {"cclk_g", NULL, 0, 1}, + {"hda", "pllP_out0", 102000000, 0}, + {"hda2codec_2x", "pllP_out0", 48000000, 0}, +}; + +static void +init_divs(struct tegra124_car_softc *sc, struct clk_div_def *clks, int nclks) +{ + int i, rv; + + for (i = 0; i < nclks; i++) { + rv = clknode_div_register(sc->clkdom, clks + i); + if (rv != 0) + panic("clk_div_register failed"); + } +} + +static void +init_gates(struct tegra124_car_softc *sc, struct clk_gate_def *clks, int nclks) +{ + int i, rv; + + for (i = 0; i < nclks; i++) { + rv = clknode_gate_register(sc->clkdom, clks + i); + if (rv != 0) + panic("clk_gate_register failed"); + } +} + +static void +init_muxes(struct tegra124_car_softc *sc, struct clk_mux_def *clks, int nclks) +{ + int i, rv; + + for (i = 0; i < nclks; i++) { + rv = clknode_mux_register(sc->clkdom, clks + i); + if (rv != 0) + panic("clk_mux_register failed"); + } +} + +static void +init_fixeds(struct tegra124_car_softc *sc, struct clk_fixed_def *clks, + int nclks) +{ + int i, rv; + uint32_t val; + int osc_idx; + + CLKDEV_READ_4(sc->dev, OSC_CTRL, &val); + osc_idx = val >> OSC_CTRL_OSC_FREQ_SHIFT; + fixed_clk_m.freq = osc_freqs[osc_idx]; + if (fixed_clk_m.freq == 0) + panic("Undefined input frequency"); + rv = clknode_fixed_register(sc->clkdom, &fixed_clk_m); + if (rv != 0) panic("clk_fixed_register failed"); + + val = (val >> OSC_CTRL_PLL_REF_DIV_SHIFT) & 3; + fixed_osc_div_clk.div = 1 << val; + rv = clknode_fixed_register(sc->clkdom, &fixed_osc_div_clk); + if (rv != 0) panic("clk_fixed_register failed"); + + for (i = 0; i < nclks; i++) { + rv = clknode_fixed_register(sc->clkdom, clks + i); + if (rv != 0) + panic("clk_fixed_register failed"); + } +} + +static void +postinit_clock(struct tegra124_car_softc *sc) +{ + int i; + struct tegra124_init_item *tbl; + struct clknode *clknode; + int rv; + + for (i = 0; i < nitems(clk_init_table); i++) { + tbl = &clk_init_table[i]; + + clknode = clknode_find_by_name(tbl->name); + if (clknode == NULL) { + device_printf(sc->dev, "Cannot find clock %s\n", + tbl->name); + continue; + } + if (tbl->parent != NULL) { + rv = clknode_set_parent_by_name(clknode, tbl->parent); + if (rv != 0) { + device_printf(sc->dev, + "Cannot set parent for %s (to %s): %d\n", + tbl->name, tbl->parent, rv); + continue; + } + } + if (tbl->frequency != 0) { + rv = clknode_set_freq(clknode, tbl->frequency, 0 , 9999); + if (rv != 0) { + device_printf(sc->dev, + "Cannot set frequency for %s: %d\n", + tbl->name, rv); + continue; + } + } + if (tbl->enable!= 0) { + rv = clknode_enable(clknode); + if (rv != 0) { + device_printf(sc->dev, + "Cannot enable %s: %d\n", tbl->name, rv); + continue; + } + } + } +} + +static void +register_clocks(device_t dev) +{ + struct tegra124_car_softc *sc; + + sc = device_get_softc(dev); + sc->clkdom = clkdom_create(dev); + if (sc->clkdom == NULL) + panic("clkdom == NULL"); + + tegra124_init_plls(sc); + init_fixeds(sc, tegra124_fixed_clks, nitems(tegra124_fixed_clks)); + init_muxes(sc, tegra124_mux_clks, nitems(tegra124_mux_clks)); + init_divs(sc, tegra124_div_clks, nitems(tegra124_div_clks)); + init_gates(sc, tegra124_gate_clks, nitems(tegra124_gate_clks)); + tegra124_periph_clock(sc); + tegra124_super_mux_clock(sc); + clkdom_finit(sc->clkdom); + clkdom_xlock(sc->clkdom); + postinit_clock(sc); + clkdom_unlock(sc->clkdom); + if (bootverbose) + clkdom_dump(sc->clkdom); +} + +static int +tegra124_car_clkdev_read_4(device_t dev, bus_addr_t addr, uint32_t *val) +{ + struct tegra124_car_softc *sc; + + sc = device_get_softc(dev); + *val = bus_read_4(sc->mem_res, addr); + return (0); +} + +static int +tegra124_car_clkdev_write_4(device_t dev, bus_addr_t addr, uint32_t val) +{ + struct tegra124_car_softc *sc; + + sc = device_get_softc(dev); + bus_write_4(sc->mem_res, addr, val); + return (0); +} + +static int +tegra124_car_clkdev_modify_4(device_t dev, bus_addr_t addr, uint32_t clear_mask, + uint32_t set_mask) +{ + struct tegra124_car_softc *sc; + uint32_t reg; + + sc = device_get_softc(dev); + reg = bus_read_4(sc->mem_res, addr); + reg &= ~clear_mask; + reg |= set_mask; + bus_write_4(sc->mem_res, addr, reg); + return (0); +} + +static void +tegra124_car_clkdev_device_lock(device_t dev) +{ + struct tegra124_car_softc *sc; + + sc = device_get_softc(dev); + mtx_lock(&sc->mtx); +} + +static void +tegra124_car_clkdev_device_unlock(device_t dev) +{ + struct tegra124_car_softc *sc; + + sc = device_get_softc(dev); + mtx_unlock(&sc->mtx); +} + +static int +tegra124_car_detach(device_t dev) +{ + + device_printf(dev, "Error: Clock driver cannot be detached\n"); + return (EBUSY); +} + +static int +tegra124_car_probe(device_t dev) +{ + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (ofw_bus_search_compatible(dev, compat_data)->ocd_data != 0) { + device_set_desc(dev, "Tegra Clock Driver"); + return (BUS_PROBE_DEFAULT); + } + + return (ENXIO); +} + +static int +tegra124_car_attach(device_t dev) +{ + struct tegra124_car_softc *sc = device_get_softc(dev); + int rid, rv; + + sc->dev = dev; + + mtx_init(&sc->mtx, device_get_nameunit(dev), NULL, MTX_DEF); + sc->type = ofw_bus_search_compatible(dev, compat_data)->ocd_data; + + /* Resource setup. */ + rid = 0; + sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, + RF_ACTIVE); + if (!sc->mem_res) { + device_printf(dev, "cannot allocate memory resource\n"); + rv = ENXIO; + goto fail; + } + + register_clocks(dev); + hwreset_register_ofw_provider(dev); + return (0); + +fail: + if (sc->mem_res) + bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res); + + return (rv); +} + +static int +tegra124_car_hwreset_assert(device_t dev, intptr_t id, bool value) +{ + struct tegra124_car_softc *sc = device_get_softc(dev); + + return (tegra124_hwreset_by_idx(sc, id, value)); +} + +static device_method_t tegra124_car_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, tegra124_car_probe), + DEVMETHOD(device_attach, tegra124_car_attach), + DEVMETHOD(device_detach, tegra124_car_detach), + + /* Clkdev interface*/ + DEVMETHOD(clkdev_read_4, tegra124_car_clkdev_read_4), + DEVMETHOD(clkdev_write_4, tegra124_car_clkdev_write_4), + DEVMETHOD(clkdev_modify_4, tegra124_car_clkdev_modify_4), + DEVMETHOD(clkdev_device_lock, tegra124_car_clkdev_device_lock), + DEVMETHOD(clkdev_device_unlock, tegra124_car_clkdev_device_unlock), + + /* Reset interface */ + DEVMETHOD(hwreset_assert, tegra124_car_hwreset_assert), + + DEVMETHOD_END +}; + +static devclass_t tegra124_car_devclass; +static DEFINE_CLASS_0(car, tegra124_car_driver, tegra124_car_methods, + sizeof(struct tegra124_car_softc)); +EARLY_DRIVER_MODULE(tegra124_car, simplebus, tegra124_car_driver, + tegra124_car_devclass, NULL, NULL, BUS_PASS_TIMER); |