/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2019 Emmanuel Vadot * * 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 "syscon_if.h" #define RK3288_GRF_IO_VSEL 0x380 #define RK3399_GRF_IO_VSEL 0xe640 #define RK3399_PMUGRF_SOC_CON0 0x180 #define RK3568_PMUGRF_IO_VSEL0 0x0140 #define RK3568_PMUGRF_IO_VSEL1 0x0144 #define RK3568_PMUGRF_IO_VSEL2 0x0148 #define MAX_1V8 1850000 enum rk_iodomain_type { RK3328 = 1, RK3399, RK3568, }; struct rk_iodomain_supply { char *name; uint32_t bit; }; struct rk_iodomain_softc; struct rk_iodomain_conf { struct rk_iodomain_supply *supply; int nsupply; uint32_t grf_reg; void (*init)(struct rk_iodomain_softc *sc); enum rk_iodomain_type type; }; 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, .type = RK3328, }; 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, .type = RK3399, }; static struct rk_iodomain_supply rk3399_pmu_supply[] = { {"pmu1830-supply", 9}, }; static void rk3399_pmu_init(struct rk_iodomain_softc *sc); static struct rk_iodomain_conf rk3399_pmu_conf = { .supply = rk3399_pmu_supply, .nsupply = nitems(rk3399_pmu_supply), .grf_reg = RK3399_PMUGRF_SOC_CON0, .init = rk3399_pmu_init, .type = RK3399, }; static struct rk_iodomain_supply rk3568_pmu_supply[] = { {"pmuio1-supply", 0}, {"pmuio2-supply", 1}, {"vccio1-supply", 1}, {"vccio2-supply", 2}, {"vccio3-supply", 3}, {"vccio4-supply", 4}, {"vccio5-supply", 5}, {"vccio6-supply", 6}, {"vccio7-supply", 7}, }; static struct rk_iodomain_conf rk3568_pmu_conf = { .supply = rk3568_pmu_supply, .nsupply = nitems(rk3568_pmu_supply), .type = RK3568, }; 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}, {"rockchip,rk3568-pmu-io-voltage-domain", (uintptr_t)&rk3568_pmu_conf}, {NULL, 0} }; static void rk3399_pmu_init(struct rk_iodomain_softc *sc) { SYSCON_WRITE_4(sc->grf, RK3399_PMUGRF_SOC_CON0, (1 << 8) | (1 << (8 + 16))); /* set pmu1830_volsel */ } static int 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++) { if (regulator_get_by_ofw_property(sc->dev, sc->node, sc->conf->supply[i].name, &supply) != 0) { device_printf(sc->dev, "Cannot get property for regulator %s\n", sc->conf->supply[i].name); return (ENXIO); } if (regulator_get_voltage(supply, &uvolt) != 0) { device_printf(sc->dev, "Cannot get current voltage for regulator %s\n", sc->conf->supply[i].name); return (ENXIO); } if (sc->conf->type != RK3568) { /* RK3328 and RK3399 iodomain */ mask |= (1 << sc->conf->supply[i].bit) << 16; 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 { /* RK3568 iodomain */ if (bootverbose) { device_printf(sc->dev, "Setting regulator %s voltage=%duV\n", sc->conf->supply[i].name, uvolt); } switch(i) { case 0: /* pmuio1 */ break; case 1: /* pmuio2 */ SYSCON_WRITE_4(sc->grf, RK3568_PMUGRF_IO_VSEL2, (1 << (sc->conf->supply[i].bit + 16)) | (uvolt > MAX_1V8 ? 0 : 1 << sc->conf->supply[i].bit)); SYSCON_WRITE_4(sc->grf, RK3568_PMUGRF_IO_VSEL2, (1 << (sc->conf->supply[i].bit + 4 + 16)) | (uvolt > MAX_1V8 ? 1 << (sc->conf->supply[i].bit + 4) : 0)); case 3: /* vccio2 */ break; case 2: /* vccio1 */ case 4: /* vccio3 */ case 5: /* vccio4 */ case 6: /* vccio5 */ case 7: /* vccio6 */ case 8: /* vccio7 */ SYSCON_WRITE_4(sc->grf, RK3568_PMUGRF_IO_VSEL0, (1 << (sc->conf->supply[i].bit + 16)) | (uvolt > MAX_1V8 ? 0 : 1 << sc->conf->supply[i].bit)); SYSCON_WRITE_4(sc->grf, RK3568_PMUGRF_IO_VSEL1, (1 << (sc->conf->supply[i].bit + 16)) | (uvolt > MAX_1V8 ? 1 << sc->conf->supply[i].bit : 0)); break; default: device_printf(sc->dev, "Index out of range\n"); } } } if (sc->conf->type != RK3568) SYSCON_WRITE_4(sc->grf, sc->conf->grf_reg, reg | mask); if (sc->conf->init != NULL) sc->conf->init(sc); return (0); } 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; rv = rk_iodomain_set(sc); return (rv); } 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), }; EARLY_DRIVER_MODULE(rk_iodomain, simplebus, rk_iodomain_driver, 0, 0, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LAST);