Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/arm64/qoriq/clk/lx2160a_clkgen.c
Version:
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright 2020 Michal Meloun <mmel@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 /* 32 * Clock driver for LX2160A SoC. 33 */ 34 #include <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 #include <sys/mutex.h> 39 #include <sys/rman.h> 40 #include <machine/bus.h> 41 42 #include <dev/fdt/simplebus.h> 43 44 #include <dev/ofw/ofw_bus.h> 45 #include <dev/ofw/ofw_bus_subr.h> 46 47 #include <dev/extres/clk/clk_fixed.h> 48 49 #include <arm64/qoriq/clk/qoriq_clkgen.h> 50 51 #define PLL(_id1, _id2, cname, o, d) \ 52 { \ 53 .clkdef.id = QORIQ_CLK_ID(_id1, _id2), \ 54 .clkdef.name = cname, \ 55 .clkdef.flags = 0, \ 56 .offset = o, \ 57 .shift = 1, \ 58 .mask = 0xFE, \ 59 .dividers = d, \ 60 .flags = QORIQ_CLK_PLL_HAS_KILL_BIT, \ 61 } 62 63 static const uint8_t plt_divs[] = 64 {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 0}; 65 static const uint8_t cga_divs[] = {2, 4, 0}; 66 static const uint8_t cgb_divs[] = {2, 3, 4, 0}; 67 68 static struct qoriq_clk_pll_def pltfrm_pll = 69 PLL(QORIQ_TYPE_PLATFORM_PLL, 0, "platform_pll", 0x60080, plt_divs); 70 static struct qoriq_clk_pll_def cga_pll1 = 71 PLL(QORIQ_TYPE_INTERNAL, 0, "cga_pll1", 0x80, cga_divs); 72 static struct qoriq_clk_pll_def cga_pll2 = 73 PLL(QORIQ_TYPE_INTERNAL, 0, "cga_pll2", 0xA0, cga_divs); 74 static struct qoriq_clk_pll_def cgb_pll1 = 75 PLL(QORIQ_TYPE_INTERNAL, 0, "cgb_pll1", 0x10080, cgb_divs); 76 static struct qoriq_clk_pll_def cgb_pll2 = 77 PLL(QORIQ_TYPE_INTERNAL, 0, "cgb_pll2", 0x100A0, cgb_divs); 78 79 static struct qoriq_clk_pll_def *cg_plls[] = { 80 &cga_pll1, 81 &cga_pll2, 82 &cgb_pll1, 83 &cgb_pll2, 84 }; 85 86 #if 0 87 static struct qoriq_clk_pll_def *cg_plls[] = { 88 &(struct qoriq_clk_pll_def) 89 {PLL(QORIQ_TYPE_INTERNAL, 0, "cga_pll1", 0x80, cg_divs)}, 90 &(struct qoriq_clk_pll_def) 91 {PLL(QORIQ_TYPE_INTERNAL, 0, "cga_pll2", 0xA0, cg_divs)}, 92 &(struct qoriq_clk_pll_def) 93 {PLL(QORIQ_TYPE_INTERNAL, 0, "cgb_pll1", 0x10080, cg_divs)}, 94 &(struct qoriq_clk_pll_def) 95 {PLL(QORIQ_TYPE_INTERNAL, 0, "cgb_pll2", 0x100A0, cg_divs)}, 96 }; 97 #endif 98 99 static const char *cmuxa_plist[] = { 100 "cga_pll1", 101 "cga_pll1_div2", 102 "cga_pll1_div4", 103 NULL, 104 "cga_pll2", 105 "cga_pll2_div2", 106 "cga_pll2_div4", 107 }; 108 109 static const char *cmuxb_plist[] = { 110 "cgb_pll1", 111 "cgb_pll1_div2", 112 "cgb_pll1_div4", 113 NULL, 114 "cgb_pll2", 115 "cgb_pll2_div2", 116 "cgb_pll2_div4", 117 }; 118 119 #define MUX(_id1, _id2, cname, plist, o) \ 120 { \ 121 .clkdef.id = QORIQ_CLK_ID(_id1, _id2), \ 122 .clkdef.name = cname, \ 123 .clkdef.parent_names = plist, \ 124 .clkdef.parent_cnt = nitems(plist), \ 125 .clkdef.flags = 0, \ 126 .offset = o, \ 127 .width = 4, \ 128 .shift = 27, \ 129 .mux_flags = 0, \ 130 } 131 static struct clk_mux_def cmux0 = 132 MUX(QORIQ_TYPE_CMUX, 0, "cg-cmux0", cmuxa_plist, 0x70000); 133 static struct clk_mux_def cmux1 = 134 MUX(QORIQ_TYPE_CMUX, 1, "cg-cmux1", cmuxa_plist, 0x70020); 135 static struct clk_mux_def cmux2 = 136 MUX(QORIQ_TYPE_CMUX, 2, "cg-cmux2", cmuxa_plist, 0x70040); 137 static struct clk_mux_def cmux3 = 138 MUX(QORIQ_TYPE_CMUX, 3, "cg-cmux3", cmuxa_plist, 0x70060); 139 static struct clk_mux_def cmux4 = 140 MUX(QORIQ_TYPE_CMUX, 4, "cg-cmux4", cmuxb_plist, 0x70080); 141 static struct clk_mux_def cmux5 = 142 MUX(QORIQ_TYPE_CMUX, 5, "cg-cmux5", cmuxb_plist, 0x700A0); 143 static struct clk_mux_def cmux6 = 144 MUX(QORIQ_TYPE_CMUX, 6, "cg-cmux6", cmuxb_plist, 0x700C0); 145 static struct clk_mux_def cmux7 = 146 MUX(QORIQ_TYPE_CMUX, 7, "cg-cmux7", cmuxb_plist, 0x700E0); 147 148 static struct clk_mux_def *mux_nodes[] = { 149 &cmux0, 150 &cmux1, 151 &cmux2, 152 &cmux3, 153 &cmux4, 154 &cmux5, 155 &cmux6, 156 &cmux7, 157 }; 158 159 static int 160 lx2160a_clkgen_probe(device_t dev) 161 { 162 163 if (!ofw_bus_status_okay(dev)) 164 return (ENXIO); 165 166 if(!ofw_bus_is_compatible(dev, "fsl,lx2160a-clockgen")) 167 return (ENXIO); 168 169 device_set_desc(dev, "LX2160A clockgen"); 170 return (BUS_PROBE_DEFAULT); 171 } 172 173 static int 174 lx2160a_clkgen_attach(device_t dev) 175 { 176 struct qoriq_clkgen_softc *sc; 177 int rv; 178 179 sc = device_get_softc(dev); 180 181 sc->pltfrm_pll_def = &pltfrm_pll; 182 sc->cga_pll = cg_plls; 183 sc->cga_pll_num = nitems(cg_plls); 184 sc->mux = mux_nodes; 185 sc->mux_num = nitems(mux_nodes); 186 sc->flags = QORIQ_LITTLE_ENDIAN; 187 188 rv = qoriq_clkgen_attach(dev); 189 190 printf(" %s: offset: 0x%08X, val: 0x%08X\n", __func__, 0x00080, bus_read_4(sc->res, 0x00080)); 191 printf(" %s: offset: 0x%08X, val: 0x%08X\n", __func__, 0x000A0, bus_read_4(sc->res, 0x000A0)); 192 printf(" %s: offset: 0x%08X, val: 0x%08X\n", __func__, 0x10080, bus_read_4(sc->res, 0x10080)); 193 printf(" %s: offset: 0x%08X, val: 0x%08X\n", __func__, 0x100A0, bus_read_4(sc->res, 0x100A0)); 194 printf(" %s: offset: 0x%08X, val: 0x%08X\n", __func__, 0x60080, bus_read_4(sc->res, 0x60080)); 195 printf(" %s: offset: 0x%08X, val: 0x%08X\n", __func__, 0x600A0, bus_read_4(sc->res, 0x600A0)); 196 return (rv); 197 } 198 199 static device_method_t lx2160a_clkgen_methods[] = { 200 DEVMETHOD(device_probe, lx2160a_clkgen_probe), 201 DEVMETHOD(device_attach, lx2160a_clkgen_attach), 202 203 DEVMETHOD_END 204 }; 205 206 DEFINE_CLASS_1(lx2160a_clkgen, lx2160a_clkgen_driver, lx2160a_clkgen_methods, 207 sizeof(struct qoriq_clkgen_softc), qoriq_clkgen_driver); 208 EARLY_DRIVER_MODULE(lx2160a_clkgen, simplebus, lx2160a_clkgen_driver, 0, 0, 209 BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
Cache object: 74f01658b0ce506a9b3f3aa6d5223385
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