/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright 2020 Michal Meloun * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "clkdev_if.h" #include "hwreset_if.h" #include "tegra210_car.h" static struct ofw_compat_data compat_data[] = { {"nvidia,tegra210-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, }; /* Parent lists. */ PLIST(mux_xusb_hs) = {"xusb_ss_div2", "pllU_60", "pc_xusb_ss" }; PLIST(mux_xusb_ssp) = {"xusb_ss", "osc_div_clk"}; /* Clocks adjusted online. */ static struct clk_fixed_def fixed_osc = FRATE(TEGRA210_CLK_CLK_M, "osc", 38400000); static struct clk_fixed_def fixed_clk_m = FACT(0, "clk_m", "osc", 1, 1); static struct clk_fixed_def fixed_osc_div = FACT(0, "osc_div_clk", "osc", 1, 1); static struct clk_fixed_def tegra210_fixed_clks[] = { /* Core clocks. */ FRATE(0, "bogus", 1), FRATE(0, "clk_s", 32768), /* Audio clocks. */ FRATE(0, "vimclk_sync", 1), FRATE(0, "i2s1_sync", 1), FRATE(0, "i2s2_sync", 1), FRATE(0, "i2s3_sync", 1), FRATE(0, "i2s4_sync", 1), FRATE(0, "i2s5_sync", 1), FRATE(0, "spdif_in_sync", 1), /* XUSB */ FACT(TEGRA210_CLK_XUSB_SS_DIV2, "xusb_ss_div2", "xusb_ss", 1, 2), /* SOR */ FACT(0, "sor_safe_div", "pllP_out0", 1, 17), FACT(0, "dpaux_div", "sor_safe", 1, 17), FACT(0, "dpaux1_div", "sor_safe", 1, 17), /* Not Yet Implemented */ FRATE(0, "audio", 10000000), 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), FRATE(0, "audiod1", 10000000), FRATE(0, "audiod2", 10000000), FRATE(0, "audiod3", 10000000), FRATE(0, "dfllCPU_out", 10000000), }; static struct clk_mux_def tegra210_mux_clks[] = { /* USB. */ MUX(TEGRA210_CLK_XUSB_HS_SRC, "xusb_hs", mux_xusb_hs, CLK_SOURCE_XUSB_SS, 25, 2), MUX(0, "xusb_ssp", mux_xusb_ssp, CLK_SOURCE_XUSB_SS, 24, 1), }; static struct clk_gate_def tegra210_gate_clks[] = { /* Base peripheral clocks. */ GATE_INV(TEGRA210_CLK_HCLK, "hclk", "hclk_div", CLK_SYSTEM_RATE, 7), GATE_INV(TEGRA210_CLK_PCLK, "pclk", "pclk_div", CLK_SYSTEM_RATE, 3), GATE(TEGRA210_CLK_CML0, "cml0", "pllE_out0", PLLE_AUX, 0), GATE(TEGRA210_CLK_CML1, "cml1", "pllE_out0", PLLE_AUX, 1), GATE(0, "pllD_dsi_csi", "pllD_out0", PLLD_MISC, 21), GATE(0, "pllP_hsio", "pllP_out0", PLLP_MISC1, 29), GATE(0, "pllP_xusb", "pllP_hsio", PLLP_MISC1, 28), }; static struct clk_div_def tegra210_div_clks[] = { /* 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 tegra210_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", NULL, 564480000, 1}, {"pllA_out0", NULL, 11289600, 1}, {"extperiph1", "pllA_out0", 0, 1}, {"i2s1", "pllA_out0", 11289600, 0}, {"i2s2", "pllA_out0", 11289600, 0}, {"i2s3", "pllA_out0", 11289600, 0}, {"i2s4", "pllA_out0", 11289600, 0}, {"i2s5", "pllA_out0", 11289600, 0}, {"host1x", "pllP_out0", 136000000, 1}, {"sclk", "pllP_out2", 102000000, 1}, {"dvfs_soc", "pllP_out0", 51000000, 1}, {"dvfs_ref", "pllP_out0", 51000000, 1}, {"spi4", "pllP_out0", 12000000, 1}, {"pllREFE", NULL, 672000000, 0}, {"xusb", NULL, 0, 1}, {"xusb_ss", "pllU_480", 120000000, 0}, {"pc_xusb_fs", "pllU_48", 48000000, 0}, {"xusb_hs", "pc_xusb_ss", 120000000, 0}, {"xusb_ssp", "xusb_ss", 120000000, 0}, {"pc_xusb_falcon", "pllP_xusb", 204000000, 0}, {"pc_xusb_core_host", "pllP_xusb", 102000000, 0}, {"pc_xusb_core_dev", "pllP_xusb", 102000000, 0}, {"sata", "pllP_out0", 104000000, 0}, {"sata_oob", "pllP_out0", 204000000, 0}, {"emc", NULL, 0, 1}, {"mselect", NULL, 0, 1}, {"csite", NULL, 0, 1}, {"dbgapb", NULL, 0, 1 }, {"tsensor", "clk_m", 400000, 0}, {"i2c1", "pllP_out0", 0, 0}, {"i2c2", "pllP_out0", 0, 0}, {"i2c3", "pllP_out0", 0, 0}, {"i2c4", "pllP_out0", 0, 0}, {"i2c5", "pllP_out0", 0, 0}, {"i2c6", "pllP_out0", 0, 0}, {"pllDP_out0", NULL, 270000000, 0}, {"soc_therm", "pllP_out0", 51000000, 0}, {"cclk_g", NULL, 0, 1}, {"pllU_out1", NULL, 48000000, 1}, {"pllU_out2", NULL, 60000000, 1}, {"pllC4", NULL, 1000000000, 1}, {"pllC4_out0", NULL, 1000000000, 1}, }; static void init_divs(struct tegra210_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 tegra210_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 tegra210_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 tegra210_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 = OSC_CTRL_OSC_FREQ_GET(val); fixed_osc.freq = osc_freqs[osc_idx]; if (fixed_osc.freq == 0) panic("Undefined input frequency"); rv = clknode_fixed_register(sc->clkdom, &fixed_osc); if (rv != 0) panic("clk_fixed_register failed"); fixed_osc_div.div = 1 << OSC_CTRL_PLL_REF_DIV_GET(val); rv = clknode_fixed_register(sc->clkdom, &fixed_osc_div); if (rv != 0) panic("clk_fixed_register failed"); CLKDEV_READ_4(sc->dev, SPARE_REG0, &val); fixed_clk_m.div = SPARE_REG0_MDIV_GET(val) + 1; rv = clknode_fixed_register(sc->clkdom, &fixed_clk_m); 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 tegra210_car_softc *sc) { int i; struct tegra210_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 tegra210_car_softc *sc; sc = device_get_softc(dev); sc->clkdom = clkdom_create(dev); if (sc->clkdom == NULL) panic("clkdom == NULL"); init_fixeds(sc, tegra210_fixed_clks, nitems(tegra210_fixed_clks)); tegra210_init_plls(sc); init_muxes(sc, tegra210_mux_clks, nitems(tegra210_mux_clks)); init_divs(sc, tegra210_div_clks, nitems(tegra210_div_clks)); init_gates(sc, tegra210_gate_clks, nitems(tegra210_gate_clks)); tegra210_periph_clock(sc); tegra210_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 tegra210_car_clkdev_read_4(device_t dev, bus_addr_t addr, uint32_t *val) { struct tegra210_car_softc *sc; sc = device_get_softc(dev); *val = bus_read_4(sc->mem_res, addr); return (0); } static int tegra210_car_clkdev_write_4(device_t dev, bus_addr_t addr, uint32_t val) { struct tegra210_car_softc *sc; sc = device_get_softc(dev); bus_write_4(sc->mem_res, addr, val); return (0); } static int tegra210_car_clkdev_modify_4(device_t dev, bus_addr_t addr, uint32_t clear_mask, uint32_t set_mask) { struct tegra210_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 tegra210_car_clkdev_device_lock(device_t dev) { struct tegra210_car_softc *sc; sc = device_get_softc(dev); mtx_lock(&sc->mtx); } static void tegra210_car_clkdev_device_unlock(device_t dev) { struct tegra210_car_softc *sc; sc = device_get_softc(dev); mtx_unlock(&sc->mtx); } static int tegra210_car_detach(device_t dev) { device_printf(dev, "Error: Clock driver cannot be detached\n"); return (EBUSY); } static int tegra210_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 tegra210_car_attach(device_t dev) { struct tegra210_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 tegra210_car_hwreset_assert(device_t dev, intptr_t id, bool value) { struct tegra210_car_softc *sc = device_get_softc(dev); return (tegra210_hwreset_by_idx(sc, id, value)); } static device_method_t tegra210_car_methods[] = { /* Device interface */ DEVMETHOD(device_probe, tegra210_car_probe), DEVMETHOD(device_attach, tegra210_car_attach), DEVMETHOD(device_detach, tegra210_car_detach), /* Clkdev interface*/ DEVMETHOD(clkdev_read_4, tegra210_car_clkdev_read_4), DEVMETHOD(clkdev_write_4, tegra210_car_clkdev_write_4), DEVMETHOD(clkdev_modify_4, tegra210_car_clkdev_modify_4), DEVMETHOD(clkdev_device_lock, tegra210_car_clkdev_device_lock), DEVMETHOD(clkdev_device_unlock, tegra210_car_clkdev_device_unlock), /* Reset interface */ DEVMETHOD(hwreset_assert, tegra210_car_hwreset_assert), DEVMETHOD_END }; static devclass_t tegra210_car_devclass; static DEFINE_CLASS_0(car, tegra210_car_driver, tegra210_car_methods, sizeof(struct tegra210_car_softc)); EARLY_DRIVER_MODULE(tegra210_car, simplebus, tegra210_car_driver, tegra210_car_devclass, NULL, NULL, BUS_PASS_TIMER);