ls1028a_clkgen.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2021 Alstom Group.
    5  * Copyright (c) 2021 Semihalf.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD$");
   31 
   32 #include <sys/param.h>
   33 #include <sys/bus.h>
   34 #include <sys/kernel.h>
   35 #include <sys/module.h>
   36 #include <sys/mutex.h>
   37 #include <sys/rman.h>
   38 #include <machine/bus.h>
   39 
   40 #include <dev/fdt/simplebus.h>
   41 
   42 #include <dev/ofw/ofw_bus.h>
   43 #include <dev/ofw/ofw_bus_subr.h>
   44 
   45 #include <dev/extres/clk/clk_fixed.h>
   46 
   47 #include <arm64/qoriq/clk/qoriq_clkgen.h>
   48 
   49 static uint8_t ls1028a_pltfrm_pll_divs[] = {
   50         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 0
   51 };
   52 
   53 static struct qoriq_clk_pll_def ls1028a_pltfrm_pll = {
   54         .clkdef = {
   55                 .name = "ls1028a_platform_pll",
   56                 .id = QORIQ_CLK_ID(QORIQ_TYPE_PLATFORM_PLL, 0),
   57                 .flags = 0
   58         },
   59         .offset = 0x60080,
   60         .shift = 1,
   61         .mask = 0xFE,
   62         .dividers = ls1028a_pltfrm_pll_divs,
   63         .flags = QORIQ_CLK_PLL_HAS_KILL_BIT
   64 };
   65 
   66 static const uint8_t ls1028a_cga_pll_divs[] = {
   67         2, 3, 4, 0
   68 };
   69 
   70 static struct qoriq_clk_pll_def ls1028a_cga_pll1 = {
   71         .clkdef = {
   72                 .name = "ls1028a_cga_pll1",
   73                 .id = QORIQ_CLK_ID(QORIQ_TYPE_INTERNAL, 0),
   74                 .flags = 0
   75         },
   76         .offset = 0x80,
   77         .shift = 1,
   78         .mask = 0xFE,
   79         .dividers = ls1028a_cga_pll_divs,
   80         .flags = QORIQ_CLK_PLL_HAS_KILL_BIT
   81 };
   82 
   83 static struct qoriq_clk_pll_def ls1028a_cga_pll2 = {
   84         .clkdef = {
   85                 .name = "ls1028a_cga_pll2",
   86                 .id = QORIQ_CLK_ID(QORIQ_TYPE_INTERNAL, 20),
   87                 .flags = 0
   88         },
   89         .offset = 0xA0,
   90         .shift = 1,
   91         .mask = 0xFE,
   92         .dividers = ls1028a_cga_pll_divs,
   93         .flags = QORIQ_CLK_PLL_HAS_KILL_BIT
   94 };
   95 
   96 static struct qoriq_clk_pll_def *ls1028a_cga_plls[] = {
   97         &ls1028a_cga_pll1,
   98         &ls1028a_cga_pll2
   99 };
  100 
  101 static const char *ls1028a_cmux0_parent_names[] = {
  102         "ls1028a_cga_pll1",
  103         "ls1028a_cga_pll1_div2",
  104         "ls1028a_cga_pll1_div4",
  105         NULL,
  106         "ls1028a_cga_pll2",
  107         "ls1028a_cga_pll2_div2",
  108         "ls1028a_cga_pll2_div4"
  109 };
  110 
  111 static struct clk_mux_def ls1028a_cmux0 = {
  112         .clkdef = {
  113                 .name = "ls1028a_cmux0",
  114                 .id = QORIQ_CLK_ID(QORIQ_TYPE_CMUX, 0),
  115                 .parent_names = ls1028a_cmux0_parent_names,
  116                 .parent_cnt = nitems(ls1028a_cmux0_parent_names),
  117                 .flags = 0
  118         },
  119         .offset = 0x70000,
  120         .shift = 27,
  121         .width = 4,
  122         .mux_flags = 0
  123 };
  124 
  125 static struct clk_mux_def ls1028a_cmux1 = {
  126         .clkdef = {
  127                 .name = "ls1028a_cmux1",
  128                 .id = QORIQ_CLK_ID(QORIQ_TYPE_CMUX, 1),
  129                 .parent_names = ls1028a_cmux0_parent_names,
  130                 .parent_cnt = nitems(ls1028a_cmux0_parent_names),
  131                 .flags = 0
  132         },
  133         .offset = 0x70020,
  134         .shift = 27,
  135         .width = 4,
  136         .mux_flags = 0
  137 };
  138 
  139 static struct clk_mux_def ls1028a_cmux2 = {
  140         .clkdef = {
  141                 .name = "ls1028a_cmux2",
  142                 .id = QORIQ_CLK_ID(QORIQ_TYPE_CMUX, 2),
  143                 .parent_names = ls1028a_cmux0_parent_names,
  144                 .parent_cnt = nitems(ls1028a_cmux0_parent_names),
  145                 .flags = 0
  146         },
  147         .offset = 0x70040,
  148         .shift = 27,
  149         .width = 4,
  150         .mux_flags = 0
  151 };
  152 
  153 static struct clk_mux_def ls1028a_cmux3 = {
  154         .clkdef = {
  155                 .name = "ls1028a_cmux3",
  156                 .id = QORIQ_CLK_ID(QORIQ_TYPE_CMUX, 3),
  157                 .parent_names = ls1028a_cmux0_parent_names,
  158                 .parent_cnt = nitems(ls1028a_cmux0_parent_names),
  159                 .flags = 0
  160         },
  161         .offset = 0x70060,
  162         .shift = 27,
  163         .width = 4,
  164         .mux_flags = 0
  165 };
  166 
  167 static const char *ls1028a_hwaccel1_parent_names[] = {
  168         "ls1028a_platform_pll",
  169         "ls1028a_cga_pll1",
  170         "ls1028a_cga_pll1_div2",
  171         "ls1028a_cga_pll1_div3",
  172         "ls1028a_cga_pll1_div4",
  173         NULL,
  174         "ls1028a_cga_pll2_div2",
  175         "ls1028a_cga_pll2_div3"
  176 };
  177 
  178 static const char *ls1028a_hwaccel2_parent_names[] = {
  179         "ls1028a_platform_pll",
  180         "ls1028a_cga_pll2",
  181         "ls1028a_cga_pll2_div2",
  182         "ls1028a_cga_pll2_div3",
  183         "ls1028a_cga_pll2_div4",
  184         NULL,
  185         "ls1028a_cga_pll1_div2",
  186         "ls1028a_cga_pll1_div3"
  187 };
  188 
  189 static struct clk_mux_def ls1028a_hwaccel1 = {
  190         .clkdef = {
  191                 .name = "ls1028a_hwaccel1",
  192                 .id = QORIQ_CLK_ID(QORIQ_TYPE_HWACCEL, 0),
  193                 .parent_names = ls1028a_hwaccel1_parent_names,
  194                 .parent_cnt = nitems(ls1028a_hwaccel1_parent_names),
  195                 .flags = 0
  196         },
  197         .offset = 0x10,
  198         .shift = 27,
  199         .width = 4,
  200         .mux_flags = 0
  201 };
  202 
  203 static struct clk_mux_def ls1028a_hwaccel2 = {
  204         .clkdef = {
  205                 .name = "ls1028a_hwaccel2",
  206                 .id = QORIQ_CLK_ID(QORIQ_TYPE_HWACCEL, 1),
  207                 .parent_names = ls1028a_hwaccel2_parent_names,
  208                 .parent_cnt = nitems(ls1028a_hwaccel2_parent_names),
  209                 .flags = 0
  210         },
  211         .offset = 0x30,
  212         .shift = 27,
  213         .width = 4,
  214         .mux_flags = 0
  215 };
  216 
  217 static struct clk_mux_def ls1028a_hwaccel3 = {
  218         .clkdef = {
  219                 .name = "ls1028a_hwaccel3",
  220                 .id = QORIQ_CLK_ID(QORIQ_TYPE_HWACCEL, 2),
  221                 .parent_names = ls1028a_hwaccel1_parent_names,
  222                 .parent_cnt = nitems(ls1028a_hwaccel1_parent_names),
  223                 .flags = 0
  224         },
  225         .offset = 0x50,
  226         .shift = 27,
  227         .width = 4,
  228         .mux_flags = 0
  229 };
  230 
  231 static struct clk_mux_def ls1028a_hwaccel4 = {
  232         .clkdef = {
  233                 .name = "ls1028a_hwaccel4",
  234                 .id = QORIQ_CLK_ID(QORIQ_TYPE_HWACCEL, 3),
  235                 .parent_names = ls1028a_hwaccel2_parent_names,
  236                 .parent_cnt = nitems(ls1028a_hwaccel2_parent_names),
  237                 .flags = 0
  238         },
  239         .offset = 0x70,
  240         .shift = 27,
  241         .width = 4,
  242         .mux_flags = 0
  243 };
  244 
  245 static struct clk_mux_def *ls1028a_mux_nodes[] = {
  246         &ls1028a_cmux0,
  247         &ls1028a_cmux1,
  248         &ls1028a_cmux2,
  249         &ls1028a_cmux3,
  250         &ls1028a_hwaccel1,
  251         &ls1028a_hwaccel2,
  252         &ls1028a_hwaccel3,
  253         &ls1028a_hwaccel4
  254 };
  255 
  256 static int ls1028a_clkgen_probe(device_t);
  257 static int ls1028a_clkgen_attach(device_t);
  258 
  259 static device_method_t ls1028a_clkgen_methods[] = {
  260         DEVMETHOD(device_probe,         ls1028a_clkgen_probe),
  261         DEVMETHOD(device_attach,        ls1028a_clkgen_attach),
  262 
  263         DEVMETHOD_END
  264 };
  265 
  266 DEFINE_CLASS_1(ls1028a_clkgen, ls1028a_clkgen_driver, ls1028a_clkgen_methods,
  267     sizeof(struct qoriq_clkgen_softc), qoriq_clkgen_driver);
  268 
  269 EARLY_DRIVER_MODULE(ls1028a_clkgen, simplebus, ls1028a_clkgen_driver, 0, 0,
  270     BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
  271 
  272 static int
  273 ls1028a_clkgen_probe(device_t dev)
  274 {
  275 
  276         if (!ofw_bus_status_okay(dev))
  277                 return (ENXIO);
  278 
  279         if(!ofw_bus_is_compatible(dev, "fsl,ls1028a-clockgen"))
  280                 return (ENXIO);
  281 
  282         device_set_desc(dev, "LS1028A clockgen");
  283         return (BUS_PROBE_DEFAULT);
  284 }
  285 
  286 static int
  287 ls1028a_clkgen_attach(device_t dev)
  288 {
  289         struct qoriq_clkgen_softc *sc;
  290 
  291         sc = device_get_softc(dev);
  292 
  293         sc->pltfrm_pll_def = &ls1028a_pltfrm_pll;
  294         sc->cga_pll = ls1028a_cga_plls;
  295         sc->cga_pll_num = nitems(ls1028a_cga_plls);
  296         sc->mux = ls1028a_mux_nodes;
  297         sc->mux_num = nitems(ls1028a_mux_nodes);
  298         sc->flags = QORIQ_LITTLE_ENDIAN;
  299 
  300         return (qoriq_clkgen_attach(dev));
  301 }

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FreeBSD/Linux Kernel Cross Reference sys/arm64/qoriq/clk/ls1028a_clkgen.c

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sys/arm64/qoriq/clk/ls1028a_clkgen.c