1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright 2016 Michal Meloun <mmel@FreeBSD.org> 5 * Copyright (c) 2020 Oskar Holmlund <oskar.holmlund@ohdata.se> 6 * Copyright (c) 2022 Mitchell Horne <mhorne@FreeBSD.org> 7 * Copyright (c) 2024 Jari Sihvola <jsihv@gmx.com> 8 */ 9 10 /* Clocks for JH7110 SYS group. PLL driver must be attached before this. */ 11 12 #include <sys/param.h> 13 #include <sys/systm.h> 14 #include <sys/bus.h> 15 #include <sys/kernel.h> 16 #include <sys/module.h> 17 #include <sys/mutex.h> 18 #include <sys/resource.h> 19 #include <sys/rman.h> 20 21 #include <machine/bus.h> 22 23 #include <dev/fdt/simplebus.h> 24 #include <dev/ofw/ofw_bus.h> 25 #include <dev/ofw/ofw_bus_subr.h> 26 27 #include <dev/clk/clk.h> 28 #include <dev/clk/starfive/jh7110_clk.h> 29 #include <dev/hwreset/hwreset.h> 30 31 #include <dt-bindings/clock/starfive,jh7110-crg.h> 32 33 #include "clkdev_if.h" 34 #include "hwreset_if.h" 35 36 static struct ofw_compat_data compat_data[] = { 37 { "starfive,jh7110-syscrg", 1 }, 38 { NULL, 0 } 39 }; 40 41 static struct resource_spec res_spec[] = { 42 { SYS_RES_MEMORY, 0, RF_ACTIVE | RF_SHAREABLE }, 43 RESOURCE_SPEC_END 44 }; 45 46 /* parents for non-pll SYS clocks */ 47 static const char *cpu_root_p[] = { "osc", "pll0_out" }; 48 static const char *cpu_core_p[] = { "cpu_root" }; 49 static const char *cpu_bus_p[] = { "cpu_core" }; 50 static const char *perh_root_p[] = { "pll0_out", "pll2_out" }; 51 static const char *bus_root_p[] = { "osc", "pll2_out" }; 52 53 static const char *apb_bus_p[] = { "stg_axiahb" }; 54 static const char *apb0_p[] = { "apb_bus" }; 55 static const char *u0_sys_iomux_apb_p[] = { "apb_bus" }; 56 static const char *stg_axiahb_p[] = { "axi_cfg0" }; 57 static const char *ahb0_p[] = { "stg_axiahb" }; 58 static const char *axi_cfg0_p[] = { "bus_root" }; 59 60 static const char *u0_dw_uart_clk_apb_p[] = { "apb0" }; 61 static const char *u0_dw_uart_clk_core_p[] = { "osc" }; 62 static const char *u0_dw_sdio_clk_ahb_p[] = { "ahb0" }; 63 static const char *u0_dw_sdio_clk_sdcard_p[] = { "axi_cfg0" }; 64 static const char *u1_dw_uart_clk_apb_p[] = { "apb0" }; 65 static const char *u1_dw_uart_clk_core_p[] = { "osc" }; 66 static const char *u1_dw_sdio_clk_ahb_p[] = { "ahb0" }; 67 static const char *u1_dw_sdio_clk_sdcard_p[] = { "axi_cfg0" }; 68 static const char *u2_dw_uart_clk_apb_p[] = { "apb0" }; 69 static const char *u2_dw_uart_clk_core_p[] = { "osc" }; 70 static const char *u3_dw_uart_clk_apb_p[] = { "apb0" }; 71 static const char *u3_dw_uart_clk_core_p[] = { "perh_root" }; 72 73 static const char *gmac_src_p[] = { "pll0_out" }; 74 static const char *gmac_phy_p[] = { "gmac_src" }; 75 static const char *gmac0_gtxclk_p[] = { "pll0_out" }; 76 static const char *gmac0_ptp_p[] = { "gmac_src" }; 77 static const char *gmac0_gtxc_p[] = { "gmac0_gtxclk" }; 78 static const char *gmac1_gtxclk_p[] = { "pll0_out" }; 79 static const char *gmac1_gtxc_p[] = { "gmac1_gtxclk" }; 80 static const char *gmac1_rmii_rtx_p[] = { "gmac1_rmii_refin" }; 81 static const char *gmac1_axi_p[] = { "stg_axiahb" }; 82 static const char *gmac1_ahb_p[] = { "ahb0" }; 83 static const char *gmac1_ptp_p[] = { "gmac_src" }; 84 static const char *gmac1_tx_inv_p[] = { "gmac1_tx" }; 85 static const char *gmac1_tx_p[] = { "gmac1_gtxclk", "gmac1_rmii_rtx" }; 86 static const char *gmac1_rx_p[] = { "gmac1_rgmii_rxin", "gmac1_rmii_rtx" }; 87 static const char *gmac1_rx_inv_p[] = { "gmac1_rx" }; 88 89 /* non-pll SYS clocks */ 90 static const struct jh7110_clk_def sys_clks[] = { 91 JH7110_MUX(JH7110_SYSCLK_CPU_ROOT, "cpu_root", cpu_root_p), 92 JH7110_DIV(JH7110_SYSCLK_CPU_CORE, "cpu_core", cpu_core_p, 7), 93 JH7110_DIV(JH7110_SYSCLK_CPU_BUS, "cpu_bus", cpu_bus_p, 2), 94 JH7110_GATEDIV(JH7110_SYSCLK_PERH_ROOT, "perh_root", perh_root_p, 2), 95 JH7110_MUX(JH7110_SYSCLK_BUS_ROOT, "bus_root", bus_root_p), 96 97 JH7110_GATE(JH7110_SYSCLK_APB0, "apb0", apb0_p), 98 JH7110_GATE(JH7110_SYSCLK_IOMUX_APB, "u0_sys_iomux_apb", 99 u0_sys_iomux_apb_p), 100 JH7110_GATE(JH7110_SYSCLK_UART0_APB, "u0_dw_uart_clk_apb", 101 u0_dw_uart_clk_apb_p), 102 JH7110_GATE(JH7110_SYSCLK_UART0_CORE, "u0_dw_uart_clk_core", 103 u0_dw_uart_clk_core_p), 104 JH7110_GATE(JH7110_SYSCLK_UART1_APB, "u1_dw_uart_clk_apb", 105 u1_dw_uart_clk_apb_p), 106 JH7110_GATE(JH7110_SYSCLK_UART1_CORE, "u1_dw_uart_clk_core", 107 u1_dw_uart_clk_core_p), 108 JH7110_GATE(JH7110_SYSCLK_UART2_APB, "u2_dw_uart_clk_apb", 109 u2_dw_uart_clk_apb_p), 110 JH7110_GATE(JH7110_SYSCLK_UART2_CORE, "u2_dw_uart_clk_core", 111 u2_dw_uart_clk_core_p), 112 JH7110_GATE(JH7110_SYSCLK_UART3_APB, "u3_dw_uart_clk_apb", 113 u3_dw_uart_clk_apb_p), 114 JH7110_GATE(JH7110_SYSCLK_UART3_CORE, "u3_dw_uart_clk_core", 115 u3_dw_uart_clk_core_p), 116 117 JH7110_DIV(JH7110_SYSCLK_AXI_CFG0, "axi_cfg0", axi_cfg0_p, 3), 118 JH7110_DIV(JH7110_SYSCLK_STG_AXIAHB, "stg_axiahb", stg_axiahb_p, 2), 119 JH7110_GATE(JH7110_SYSCLK_AHB0, "ahb0", ahb0_p), 120 JH7110_DIV(JH7110_SYSCLK_APB_BUS, "apb_bus", apb_bus_p, 8), 121 122 JH7110_GATE(JH7110_SYSCLK_SDIO0_AHB, "u0_dw_sdio_clk_ahb", 123 u0_dw_sdio_clk_ahb_p), 124 JH7110_GATE(JH7110_SYSCLK_SDIO1_AHB, "u1_dw_sdio_clk_ahb", 125 u1_dw_sdio_clk_ahb_p), 126 JH7110_GATEDIV(JH7110_SYSCLK_SDIO0_SDCARD, "u0_dw_sdio_clk_sdcard", 127 u0_dw_sdio_clk_sdcard_p, 15), 128 JH7110_GATEDIV(JH7110_SYSCLK_SDIO1_SDCARD, "u1_dw_sdio_clk_sdcard", 129 u1_dw_sdio_clk_sdcard_p, 15), 130 131 JH7110_DIV(JH7110_SYSCLK_GMAC_SRC, "gmac_src", gmac_src_p, 7), 132 JH7110_GATEDIV(JH7110_SYSCLK_GMAC0_GTXCLK, "gmac0_gtxclk", 133 gmac0_gtxclk_p, 15), 134 JH7110_GATEDIV(JH7110_SYSCLK_GMAC0_PTP, "gmac0_ptp", gmac0_ptp_p, 31), 135 JH7110_GATEDIV(JH7110_SYSCLK_GMAC_PHY, "gmac_phy", gmac_phy_p, 31), 136 JH7110_GATE(JH7110_SYSCLK_GMAC0_GTXC, "gmac0_gtxc", gmac0_gtxc_p), 137 138 JH7110_MUX(JH7110_SYSCLK_GMAC1_RX, "gmac1_rx", gmac1_rx_p), 139 JH7110_INV(JH7110_SYSCLK_GMAC1_RX_INV, "gmac1_rx_inv", gmac1_rx_inv_p), 140 JH7110_GATE(JH7110_SYSCLK_GMAC1_AHB, "gmac1_ahb", gmac1_ahb_p), 141 JH7110_DIV(JH7110_SYSCLK_GMAC1_GTXCLK, "gmac1_gtxclk", 142 gmac1_gtxclk_p, 15), 143 JH7110_GATEMUX(JH7110_SYSCLK_GMAC1_TX, "gmac1_tx", gmac1_tx_p), 144 JH7110_INV(JH7110_SYSCLK_GMAC1_TX_INV, "gmac1_tx_inv", gmac1_tx_inv_p), 145 JH7110_GATEDIV(JH7110_SYSCLK_GMAC1_PTP, "gmac1_ptp", gmac1_ptp_p, 31), 146 JH7110_GATE(JH7110_SYSCLK_GMAC1_AXI, "gmac1_axi", gmac1_axi_p), 147 JH7110_GATE(JH7110_SYSCLK_GMAC1_GTXC, "gmac1_gtxc", gmac1_gtxc_p), 148 JH7110_DIV(JH7110_SYSCLK_GMAC1_RMII_RTX, "gmac1_rmii_rtx", 149 gmac1_rmii_rtx_p, 30), 150 }; 151 152 static int 153 jh7110_clk_sys_probe(device_t dev) 154 { 155 if (!ofw_bus_status_okay(dev)) 156 return (ENXIO); 157 158 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) 159 return (ENXIO); 160 161 device_set_desc(dev, "StarFive JH7110 SYS clock generator"); 162 163 return (BUS_PROBE_DEFAULT); 164 } 165 166 static int 167 jh7110_clk_sys_attach(device_t dev) 168 { 169 struct jh7110_clkgen_softc *sc; 170 int i, error; 171 172 sc = device_get_softc(dev); 173 174 sc->reset_status_offset = SYSCRG_RESET_STATUS; 175 sc->reset_selector_offset = SYSCRG_RESET_SELECTOR; 176 177 mtx_init(&sc->mtx, device_get_nameunit(dev), NULL, MTX_DEF); 178 179 /* Allocate memory groups */ 180 error = bus_alloc_resources(dev, res_spec, &sc->mem_res); 181 if (error != 0) { 182 device_printf(dev, "Couldn't allocate resources, error %d\n", 183 error); 184 return (ENXIO); 185 } 186 187 /* Create clock domain */ 188 sc->clkdom = clkdom_create(dev); 189 if (sc->clkdom == NULL) { 190 device_printf(dev, "Couldn't create clkdom\n"); 191 return (ENXIO); 192 } 193 194 /* Register clocks */ 195 for (i = 0; i < nitems(sys_clks); i++) { 196 error = jh7110_clk_register(sc->clkdom, &sys_clks[i]); 197 if (error != 0) { 198 device_printf(dev, "Couldn't register clock %s: %d\n", 199 sys_clks[i].clkdef.name, error); 200 return (ENXIO); 201 } 202 } 203 204 if (clkdom_finit(sc->clkdom) != 0) 205 panic("Cannot finalize clkdom initialization\n"); 206 207 if (bootverbose) 208 clkdom_dump(sc->clkdom); 209 210 hwreset_register_ofw_provider(dev); 211 212 return (0); 213 } 214 215 static int 216 jh7110_clk_sys_detach(device_t dev) 217 { 218 /* Detach not supported */ 219 return (EBUSY); 220 } 221 222 static void 223 jh7110_clk_sys_device_lock(device_t dev) 224 { 225 struct jh7110_clkgen_softc *sc; 226 227 sc = device_get_softc(dev); 228 mtx_lock(&sc->mtx); 229 } 230 231 static void 232 jh7110_clk_sys_device_unlock(device_t dev) 233 { 234 struct jh7110_clkgen_softc *sc; 235 236 sc = device_get_softc(dev); 237 mtx_unlock(&sc->mtx); 238 } 239 240 static device_method_t jh7110_clk_sys_methods[] = { 241 /* Device interface */ 242 DEVMETHOD(device_probe, jh7110_clk_sys_probe), 243 DEVMETHOD(device_attach, jh7110_clk_sys_attach), 244 DEVMETHOD(device_detach, jh7110_clk_sys_detach), 245 246 /* clkdev interface */ 247 DEVMETHOD(clkdev_device_lock, jh7110_clk_sys_device_lock), 248 DEVMETHOD(clkdev_device_unlock, jh7110_clk_sys_device_unlock), 249 250 /* Reset interface */ 251 DEVMETHOD(hwreset_assert, jh7110_reset_assert), 252 DEVMETHOD(hwreset_is_asserted, jh7110_reset_is_asserted), 253 254 DEVMETHOD_END 255 }; 256 257 DEFINE_CLASS_0(jh7110_clk_sys, jh7110_clk_sys_driver, jh7110_clk_sys_methods, 258 sizeof(struct jh7110_clkgen_softc)); 259 EARLY_DRIVER_MODULE(jh7110_clk_sys, simplebus, jh7110_clk_sys_driver, 0, 0, 260 BUS_PASS_BUS + BUS_PASS_ORDER_LATE); 261 MODULE_VERSION(jh7110_clk_sys, 1); 262