drivers/clk/bcm/clk-ns2.c

   1 /*
   2  * Copyright (C) 2015 Broadcom Corporation
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation version 2.
   7  *
   8  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
   9  * kind, whether express or implied; without even the implied warranty
  10  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/err.h>
  16 #include <linux/clk-provider.h>
  17 #include <linux/io.h>
  18 #include <linux/of.h>
  19 #include <linux/of_address.h>
  20
  21 #include <dt-bindings/clock/bcm-ns2.h>
  22 #include "clk-iproc.h"
  23
  24 #define REG_VAL(o, s, w) { .offset = o, .shift = s, .width = w, }
  25
  26 #define AON_VAL(o, pw, ps, is) { .offset = o, .pwr_width = pw, \
  27         .pwr_shift = ps, .iso_shift = is }
  28
  29 #define RESET_VAL(o, rs, prs) { .offset = o, .reset_shift = rs, \
  30         .p_reset_shift = prs }
  31
  32 #define DF_VAL(o, kis, kiw, kps, kpw, kas, kaw) { .offset = o, .ki_shift = kis,\
  33         .ki_width = kiw, .kp_shift = kps, .kp_width = kpw, .ka_shift = kas,    \
  34         .ka_width = kaw }
  35
  36 #define VCO_CTRL_VAL(uo, lo) { .u_offset = uo, .l_offset = lo }
  37
  38 #define ENABLE_VAL(o, es, hs, bs) { .offset = o, .enable_shift = es, \
  39         .hold_shift = hs, .bypass_shift = bs }
  40
  41 static const struct iproc_pll_ctrl genpll_scr = {
  42         .flags = IPROC_CLK_AON | IPROC_CLK_PLL_SPLIT_STAT_CTRL,
  43         .aon = AON_VAL(0x0, 1, 15, 12),
  44         .reset = RESET_VAL(0x4, 2, 1),
  45         .dig_filter = DF_VAL(0x0, 9, 3, 5, 4, 2, 3),
  46         .ndiv_int = REG_VAL(0x8, 4, 10),
  47         .pdiv = REG_VAL(0x8, 0, 4),
  48         .vco_ctrl = VCO_CTRL_VAL(0x10, 0xc),
  49         .status = REG_VAL(0x0, 27, 1),
  50 };
  51
  52
  53 static const struct iproc_clk_ctrl genpll_scr_clk[] = {
  54         /* bypass_shift, the last value passed into ENABLE_VAL(), is not defined
  55          * in NS2.  However, it doesn't appear to be used anywhere, so setting
  56          * it to 0.
  57          */
  58         [BCM_NS2_GENPLL_SCR_SCR_CLK] = {
  59                 .channel = BCM_NS2_GENPLL_SCR_SCR_CLK,
  60                 .flags = IPROC_CLK_AON,
  61                 .enable = ENABLE_VAL(0x0, 18, 12, 0),
  62                 .mdiv = REG_VAL(0x18, 0, 8),
  63         },
  64         [BCM_NS2_GENPLL_SCR_FS_CLK] = {
  65                 .channel = BCM_NS2_GENPLL_SCR_FS_CLK,
  66                 .flags = IPROC_CLK_AON,
  67                 .enable = ENABLE_VAL(0x0, 19, 13, 0),
  68                 .mdiv = REG_VAL(0x18, 8, 8),
  69         },
  70         [BCM_NS2_GENPLL_SCR_AUDIO_CLK] = {
  71                 .channel = BCM_NS2_GENPLL_SCR_AUDIO_CLK,
  72                 .flags = IPROC_CLK_AON,
  73                 .enable = ENABLE_VAL(0x0, 20, 14, 0),
  74                 .mdiv = REG_VAL(0x14, 0, 8),
  75         },
  76         [BCM_NS2_GENPLL_SCR_CH3_UNUSED] = {
  77                 .channel = BCM_NS2_GENPLL_SCR_CH3_UNUSED,
  78                 .flags = IPROC_CLK_AON,
  79                 .enable = ENABLE_VAL(0x0, 21, 15, 0),
  80                 .mdiv = REG_VAL(0x14, 8, 8),
  81         },
  82         [BCM_NS2_GENPLL_SCR_CH4_UNUSED] = {
  83                 .channel = BCM_NS2_GENPLL_SCR_CH4_UNUSED,
  84                 .flags = IPROC_CLK_AON,
  85                 .enable = ENABLE_VAL(0x0, 22, 16, 0),
  86                 .mdiv = REG_VAL(0x14, 16, 8),
  87         },
  88         [BCM_NS2_GENPLL_SCR_CH5_UNUSED] = {
  89                 .channel = BCM_NS2_GENPLL_SCR_CH5_UNUSED,
  90                 .flags = IPROC_CLK_AON,
  91                 .enable = ENABLE_VAL(0x0, 23, 17, 0),
  92                 .mdiv = REG_VAL(0x14, 24, 8),
  93         },
  94 };
  95
  96 static void __init ns2_genpll_scr_clk_init(struct device_node *node)
  97 {
  98         iproc_pll_clk_setup(node, &genpll_scr, NULL, 0, genpll_scr_clk,
  99                             ARRAY_SIZE(genpll_scr_clk));
 100 }
 101 CLK_OF_DECLARE(ns2_genpll_src_clk, "brcm,ns2-genpll-scr",
 102                ns2_genpll_scr_clk_init);
 103
 104 static const struct iproc_pll_ctrl genpll_sw = {
 105         .flags = IPROC_CLK_AON | IPROC_CLK_PLL_SPLIT_STAT_CTRL,
 106         .aon = AON_VAL(0x0, 2, 9, 8),
 107         .reset = RESET_VAL(0x4, 2, 1),
 108         .dig_filter = DF_VAL(0x0, 9, 3, 5, 4, 2, 3),
 109         .ndiv_int = REG_VAL(0x8, 4, 10),
 110         .pdiv = REG_VAL(0x8, 0, 4),
 111         .vco_ctrl = VCO_CTRL_VAL(0x10, 0xc),
 112         .status = REG_VAL(0x0, 13, 1),
 113 };
 114
 115 static const struct iproc_clk_ctrl genpll_sw_clk[] = {
 116         /* bypass_shift, the last value passed into ENABLE_VAL(), is not defined
 117          * in NS2.  However, it doesn't appear to be used anywhere, so setting
 118          * it to 0.
 119          */
 120         [BCM_NS2_GENPLL_SW_RPE_CLK] = {
 121                 .channel = BCM_NS2_GENPLL_SW_RPE_CLK,
 122                 .flags = IPROC_CLK_AON,
 123                 .enable = ENABLE_VAL(0x0, 18, 12, 0),
 124                 .mdiv = REG_VAL(0x18, 0, 8),
 125         },
 126         [BCM_NS2_GENPLL_SW_250_CLK] = {
 127                 .channel = BCM_NS2_GENPLL_SW_250_CLK,
 128                 .flags = IPROC_CLK_AON,
 129                 .enable = ENABLE_VAL(0x0, 19, 13, 0),
 130                 .mdiv = REG_VAL(0x18, 8, 8),
 131         },
 132         [BCM_NS2_GENPLL_SW_NIC_CLK] = {
 133                 .channel = BCM_NS2_GENPLL_SW_NIC_CLK,
 134                 .flags = IPROC_CLK_AON,
 135                 .enable = ENABLE_VAL(0x0, 20, 14, 0),
 136                 .mdiv = REG_VAL(0x14, 0, 8),
 137         },
 138         [BCM_NS2_GENPLL_SW_CHIMP_CLK] = {
 139                 .channel = BCM_NS2_GENPLL_SW_CHIMP_CLK,
 140                 .flags = IPROC_CLK_AON,
 141                 .enable = ENABLE_VAL(0x0, 21, 15, 0),
 142                 .mdiv = REG_VAL(0x14, 8, 8),
 143         },
 144         [BCM_NS2_GENPLL_SW_PORT_CLK] = {
 145                 .channel = BCM_NS2_GENPLL_SW_PORT_CLK,
 146                 .flags = IPROC_CLK_AON,
 147                 .enable = ENABLE_VAL(0x0, 22, 16, 0),
 148                 .mdiv = REG_VAL(0x14, 16, 8),
 149         },
 150         [BCM_NS2_GENPLL_SW_SDIO_CLK] = {
 151                 .channel = BCM_NS2_GENPLL_SW_SDIO_CLK,
 152                 .flags = IPROC_CLK_AON,
 153                 .enable = ENABLE_VAL(0x0, 23, 17, 0),
 154                 .mdiv = REG_VAL(0x14, 24, 8),
 155         },
 156 };
 157
 158 static void __init ns2_genpll_sw_clk_init(struct device_node *node)
 159 {
 160         iproc_pll_clk_setup(node, &genpll_sw, NULL, 0, genpll_sw_clk,
 161                             ARRAY_SIZE(genpll_sw_clk));
 162 }
 163 CLK_OF_DECLARE(ns2_genpll_sw_clk, "brcm,ns2-genpll-sw",
 164                ns2_genpll_sw_clk_init);
 165
 166 static const struct iproc_pll_ctrl lcpll_ddr = {
 167         .flags = IPROC_CLK_AON | IPROC_CLK_PLL_SPLIT_STAT_CTRL,
 168         .aon = AON_VAL(0x0, 2, 1, 0),
 169         .reset = RESET_VAL(0x4, 2, 1),
 170         .dig_filter = DF_VAL(0x0, 9, 3, 5, 4, 1, 4),
 171         .ndiv_int = REG_VAL(0x8, 4, 10),
 172         .pdiv = REG_VAL(0x8, 0, 4),
 173         .vco_ctrl = VCO_CTRL_VAL(0x10, 0xc),
 174         .status = REG_VAL(0x0, 0, 1),
 175 };
 176
 177 static const struct iproc_clk_ctrl lcpll_ddr_clk[] = {
 178         /* bypass_shift, the last value passed into ENABLE_VAL(), is not defined
 179          * in NS2.  However, it doesn't appear to be used anywhere, so setting
 180          * it to 0.
 181          */
 182         [BCM_NS2_LCPLL_DDR_PCIE_SATA_USB_CLK] = {
 183                 .channel = BCM_NS2_LCPLL_DDR_PCIE_SATA_USB_CLK,
 184                 .flags = IPROC_CLK_AON,
 185                 .enable = ENABLE_VAL(0x0, 18, 12, 0),
 186                 .mdiv = REG_VAL(0x14, 0, 8),
 187         },
 188         [BCM_NS2_LCPLL_DDR_DDR_CLK] = {
 189                 .channel = BCM_NS2_LCPLL_DDR_DDR_CLK,
 190                 .flags = IPROC_CLK_AON,
 191                 .enable = ENABLE_VAL(0x0, 19, 13, 0),
 192                 .mdiv = REG_VAL(0x14, 8, 8),
 193         },
 194         [BCM_NS2_LCPLL_DDR_CH2_UNUSED] = {
 195                 .channel = BCM_NS2_LCPLL_DDR_CH2_UNUSED,
 196                 .flags = IPROC_CLK_AON,
 197                 .enable = ENABLE_VAL(0x0, 20, 14, 0),
 198                 .mdiv = REG_VAL(0x10, 0, 8),
 199         },
 200         [BCM_NS2_LCPLL_DDR_CH3_UNUSED] = {
 201                 .channel = BCM_NS2_LCPLL_DDR_CH3_UNUSED,
 202                 .flags = IPROC_CLK_AON,
 203                 .enable = ENABLE_VAL(0x0, 21, 15, 0),
 204                 .mdiv = REG_VAL(0x10, 8, 8),
 205         },
 206         [BCM_NS2_LCPLL_DDR_CH4_UNUSED] = {
 207                 .channel = BCM_NS2_LCPLL_DDR_CH4_UNUSED,
 208                 .flags = IPROC_CLK_AON,
 209                 .enable = ENABLE_VAL(0x0, 22, 16, 0),
 210                 .mdiv = REG_VAL(0x10, 16, 8),
 211         },
 212         [BCM_NS2_LCPLL_DDR_CH5_UNUSED] = {
 213                 .channel = BCM_NS2_LCPLL_DDR_CH5_UNUSED,
 214                 .flags = IPROC_CLK_AON,
 215                 .enable = ENABLE_VAL(0x0, 23, 17, 0),
 216                 .mdiv = REG_VAL(0x10, 24, 8),
 217         },
 218 };
 219
 220 static void __init ns2_lcpll_ddr_clk_init(struct device_node *node)
 221 {
 222         iproc_pll_clk_setup(node, &lcpll_ddr, NULL, 0, lcpll_ddr_clk,
 223                             ARRAY_SIZE(lcpll_ddr_clk));
 224 }
 225 CLK_OF_DECLARE(ns2_lcpll_ddr_clk, "brcm,ns2-lcpll-ddr",
 226                ns2_lcpll_ddr_clk_init);
 227
 228 static const struct iproc_pll_ctrl lcpll_ports = {
 229         .flags = IPROC_CLK_AON | IPROC_CLK_PLL_SPLIT_STAT_CTRL,
 230         .aon = AON_VAL(0x0, 2, 5, 4),
 231         .reset = RESET_VAL(0x4, 2, 1),
 232         .dig_filter = DF_VAL(0x0, 9, 3, 5, 4, 1, 4),
 233         .ndiv_int = REG_VAL(0x8, 4, 10),
 234         .pdiv = REG_VAL(0x8, 0, 4),
 235         .vco_ctrl = VCO_CTRL_VAL(0x10, 0xc),
 236         .status = REG_VAL(0x0, 0, 1),
 237 };
 238
 239 static const struct iproc_clk_ctrl lcpll_ports_clk[] = {
 240         /* bypass_shift, the last value passed into ENABLE_VAL(), is not defined
 241          * in NS2.  However, it doesn't appear to be used anywhere, so setting
 242          * it to 0.
 243          */
 244         [BCM_NS2_LCPLL_PORTS_WAN_CLK] = {
 245                 .channel = BCM_NS2_LCPLL_PORTS_WAN_CLK,
 246                 .flags = IPROC_CLK_AON,
 247                 .enable = ENABLE_VAL(0x0, 18, 12, 0),
 248                 .mdiv = REG_VAL(0x14, 0, 8),
 249         },
 250         [BCM_NS2_LCPLL_PORTS_RGMII_CLK] = {
 251                 .channel = BCM_NS2_LCPLL_PORTS_RGMII_CLK,
 252                 .flags = IPROC_CLK_AON,
 253                 .enable = ENABLE_VAL(0x0, 19, 13, 0),
 254                 .mdiv = REG_VAL(0x14, 8, 8),
 255         },
 256         [BCM_NS2_LCPLL_PORTS_CH2_UNUSED] = {
 257                 .channel = BCM_NS2_LCPLL_PORTS_CH2_UNUSED,
 258                 .flags = IPROC_CLK_AON,
 259                 .enable = ENABLE_VAL(0x0, 20, 14, 0),
 260                 .mdiv = REG_VAL(0x10, 0, 8),
 261         },
 262         [BCM_NS2_LCPLL_PORTS_CH3_UNUSED] = {
 263                 .channel = BCM_NS2_LCPLL_PORTS_CH3_UNUSED,
 264                 .flags = IPROC_CLK_AON,
 265                 .enable = ENABLE_VAL(0x0, 21, 15, 0),
 266                 .mdiv = REG_VAL(0x10, 8, 8),
 267         },
 268         [BCM_NS2_LCPLL_PORTS_CH4_UNUSED] = {
 269                 .channel = BCM_NS2_LCPLL_PORTS_CH4_UNUSED,
 270                 .flags = IPROC_CLK_AON,
 271                 .enable = ENABLE_VAL(0x0, 22, 16, 0),
 272                 .mdiv = REG_VAL(0x10, 16, 8),
 273         },
 274         [BCM_NS2_LCPLL_PORTS_CH5_UNUSED] = {
 275                 .channel = BCM_NS2_LCPLL_PORTS_CH5_UNUSED,
 276                 .flags = IPROC_CLK_AON,
 277                 .enable = ENABLE_VAL(0x0, 23, 17, 0),
 278                 .mdiv = REG_VAL(0x10, 24, 8),
 279         },
 280 };
 281
 282 static void __init ns2_lcpll_ports_clk_init(struct device_node *node)
 283 {
 284         iproc_pll_clk_setup(node, &lcpll_ports, NULL, 0, lcpll_ports_clk,
 285                             ARRAY_SIZE(lcpll_ports_clk));
 286 }
 287 CLK_OF_DECLARE(ns2_lcpll_ports_clk, "brcm,ns2-lcpll-ports",
 288                ns2_lcpll_ports_clk_init);