kernel/drivers/clk/ti/clk-2xxx.c

   1 /*
   2  * OMAP2 Clock init
   3  *
   4  * Copyright (C) 2013 Texas Instruments, Inc
   5  *     Tero Kristo (t-kristo@ti.com)
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation version 2.
  10  *
  11  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  12  * kind, whether express or implied; without even the implied warranty
  13  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/list.h>
  19 #include <linux/clk-provider.h>
  20 #include <linux/clk/ti.h>
  21
  22 static struct ti_dt_clk omap2xxx_clks[] = {
  23         DT_CLK(NULL, "func_32k_ck", "func_32k_ck"),
  24         DT_CLK(NULL, "secure_32k_ck", "secure_32k_ck"),
  25         DT_CLK(NULL, "virt_12m_ck", "virt_12m_ck"),
  26         DT_CLK(NULL, "virt_13m_ck", "virt_13m_ck"),
  27         DT_CLK(NULL, "virt_19200000_ck", "virt_19200000_ck"),
  28         DT_CLK(NULL, "virt_26m_ck", "virt_26m_ck"),
  29         DT_CLK(NULL, "aplls_clkin_ck", "aplls_clkin_ck"),
  30         DT_CLK(NULL, "aplls_clkin_x2_ck", "aplls_clkin_x2_ck"),
  31         DT_CLK(NULL, "osc_ck", "osc_ck"),
  32         DT_CLK(NULL, "sys_ck", "sys_ck"),
  33         DT_CLK(NULL, "alt_ck", "alt_ck"),
  34         DT_CLK(NULL, "mcbsp_clks", "mcbsp_clks"),
  35         DT_CLK(NULL, "dpll_ck", "dpll_ck"),
  36         DT_CLK(NULL, "apll96_ck", "apll96_ck"),
  37         DT_CLK(NULL, "apll54_ck", "apll54_ck"),
  38         DT_CLK(NULL, "func_54m_ck", "func_54m_ck"),
  39         DT_CLK(NULL, "core_ck", "core_ck"),
  40         DT_CLK(NULL, "func_96m_ck", "func_96m_ck"),
  41         DT_CLK(NULL, "func_48m_ck", "func_48m_ck"),
  42         DT_CLK(NULL, "func_12m_ck", "func_12m_ck"),
  43         DT_CLK(NULL, "sys_clkout_src", "sys_clkout_src"),
  44         DT_CLK(NULL, "sys_clkout", "sys_clkout"),
  45         DT_CLK(NULL, "emul_ck", "emul_ck"),
  46         DT_CLK(NULL, "mpu_ck", "mpu_ck"),
  47         DT_CLK(NULL, "dsp_fck", "dsp_fck"),
  48         DT_CLK(NULL, "gfx_3d_fck", "gfx_3d_fck"),
  49         DT_CLK(NULL, "gfx_2d_fck", "gfx_2d_fck"),
  50         DT_CLK(NULL, "gfx_ick", "gfx_ick"),
  51         DT_CLK("omapdss_dss", "ick", "dss_ick"),
  52         DT_CLK(NULL, "dss_ick", "dss_ick"),
  53         DT_CLK(NULL, "dss1_fck", "dss1_fck"),
  54         DT_CLK(NULL, "dss2_fck", "dss2_fck"),
  55         DT_CLK(NULL, "dss_54m_fck", "dss_54m_fck"),
  56         DT_CLK(NULL, "core_l3_ck", "core_l3_ck"),
  57         DT_CLK(NULL, "ssi_fck", "ssi_ssr_sst_fck"),
  58         DT_CLK(NULL, "usb_l4_ick", "usb_l4_ick"),
  59         DT_CLK(NULL, "l4_ck", "l4_ck"),
  60         DT_CLK(NULL, "ssi_l4_ick", "ssi_l4_ick"),
  61         DT_CLK(NULL, "gpt1_ick", "gpt1_ick"),
  62         DT_CLK(NULL, "gpt1_fck", "gpt1_fck"),
  63         DT_CLK(NULL, "gpt2_ick", "gpt2_ick"),
  64         DT_CLK(NULL, "gpt2_fck", "gpt2_fck"),
  65         DT_CLK(NULL, "gpt3_ick", "gpt3_ick"),
  66         DT_CLK(NULL, "gpt3_fck", "gpt3_fck"),
  67         DT_CLK(NULL, "gpt4_ick", "gpt4_ick"),
  68         DT_CLK(NULL, "gpt4_fck", "gpt4_fck"),
  69         DT_CLK(NULL, "gpt5_ick", "gpt5_ick"),
  70         DT_CLK(NULL, "gpt5_fck", "gpt5_fck"),
  71         DT_CLK(NULL, "gpt6_ick", "gpt6_ick"),
  72         DT_CLK(NULL, "gpt6_fck", "gpt6_fck"),
  73         DT_CLK(NULL, "gpt7_ick", "gpt7_ick"),
  74         DT_CLK(NULL, "gpt7_fck", "gpt7_fck"),
  75         DT_CLK(NULL, "gpt8_ick", "gpt8_ick"),
  76         DT_CLK(NULL, "gpt8_fck", "gpt8_fck"),
  77         DT_CLK(NULL, "gpt9_ick", "gpt9_ick"),
  78         DT_CLK(NULL, "gpt9_fck", "gpt9_fck"),
  79         DT_CLK(NULL, "gpt10_ick", "gpt10_ick"),
  80         DT_CLK(NULL, "gpt10_fck", "gpt10_fck"),
  81         DT_CLK(NULL, "gpt11_ick", "gpt11_ick"),
  82         DT_CLK(NULL, "gpt11_fck", "gpt11_fck"),
  83         DT_CLK(NULL, "gpt12_ick", "gpt12_ick"),
  84         DT_CLK(NULL, "gpt12_fck", "gpt12_fck"),
  85         DT_CLK("omap-mcbsp.1", "ick", "mcbsp1_ick"),
  86         DT_CLK(NULL, "mcbsp1_ick", "mcbsp1_ick"),
  87         DT_CLK(NULL, "mcbsp1_fck", "mcbsp1_fck"),
  88         DT_CLK("omap-mcbsp.2", "ick", "mcbsp2_ick"),
  89         DT_CLK(NULL, "mcbsp2_ick", "mcbsp2_ick"),
  90         DT_CLK(NULL, "mcbsp2_fck", "mcbsp2_fck"),
  91         DT_CLK("omap2_mcspi.1", "ick", "mcspi1_ick"),
  92         DT_CLK(NULL, "mcspi1_ick", "mcspi1_ick"),
  93         DT_CLK(NULL, "mcspi1_fck", "mcspi1_fck"),
  94         DT_CLK("omap2_mcspi.2", "ick", "mcspi2_ick"),
  95         DT_CLK(NULL, "mcspi2_ick", "mcspi2_ick"),
  96         DT_CLK(NULL, "mcspi2_fck", "mcspi2_fck"),
  97         DT_CLK(NULL, "uart1_ick", "uart1_ick"),
  98         DT_CLK(NULL, "uart1_fck", "uart1_fck"),
  99         DT_CLK(NULL, "uart2_ick", "uart2_ick"),
 100         DT_CLK(NULL, "uart2_fck", "uart2_fck"),
 101         DT_CLK(NULL, "uart3_ick", "uart3_ick"),
 102         DT_CLK(NULL, "uart3_fck", "uart3_fck"),
 103         DT_CLK(NULL, "gpios_ick", "gpios_ick"),
 104         DT_CLK(NULL, "gpios_fck", "gpios_fck"),
 105         DT_CLK("omap_wdt", "ick", "mpu_wdt_ick"),
 106         DT_CLK(NULL, "mpu_wdt_ick", "mpu_wdt_ick"),
 107         DT_CLK(NULL, "mpu_wdt_fck", "mpu_wdt_fck"),
 108         DT_CLK(NULL, "sync_32k_ick", "sync_32k_ick"),
 109         DT_CLK(NULL, "wdt1_ick", "wdt1_ick"),
 110         DT_CLK(NULL, "omapctrl_ick", "omapctrl_ick"),
 111         DT_CLK("omap24xxcam", "fck", "cam_fck"),
 112         DT_CLK(NULL, "cam_fck", "cam_fck"),
 113         DT_CLK("omap24xxcam", "ick", "cam_ick"),
 114         DT_CLK(NULL, "cam_ick", "cam_ick"),
 115         DT_CLK(NULL, "mailboxes_ick", "mailboxes_ick"),
 116         DT_CLK(NULL, "wdt4_ick", "wdt4_ick"),
 117         DT_CLK(NULL, "wdt4_fck", "wdt4_fck"),
 118         DT_CLK(NULL, "mspro_ick", "mspro_ick"),
 119         DT_CLK(NULL, "mspro_fck", "mspro_fck"),
 120         DT_CLK(NULL, "fac_ick", "fac_ick"),
 121         DT_CLK(NULL, "fac_fck", "fac_fck"),
 122         DT_CLK("omap_hdq.0", "ick", "hdq_ick"),
 123         DT_CLK(NULL, "hdq_ick", "hdq_ick"),
 124         DT_CLK("omap_hdq.0", "fck", "hdq_fck"),
 125         DT_CLK(NULL, "hdq_fck", "hdq_fck"),
 126         DT_CLK("omap_i2c.1", "ick", "i2c1_ick"),
 127         DT_CLK(NULL, "i2c1_ick", "i2c1_ick"),
 128         DT_CLK("omap_i2c.2", "ick", "i2c2_ick"),
 129         DT_CLK(NULL, "i2c2_ick", "i2c2_ick"),
 130         DT_CLK(NULL, "gpmc_fck", "gpmc_fck"),
 131         DT_CLK(NULL, "sdma_fck", "sdma_fck"),
 132         DT_CLK(NULL, "sdma_ick", "sdma_ick"),
 133         DT_CLK(NULL, "sdrc_ick", "sdrc_ick"),
 134         DT_CLK(NULL, "des_ick", "des_ick"),
 135         DT_CLK("omap-sham", "ick", "sha_ick"),
 136         DT_CLK(NULL, "sha_ick", "sha_ick"),
 137         DT_CLK("omap_rng", "ick", "rng_ick"),
 138         DT_CLK(NULL, "rng_ick", "rng_ick"),
 139         DT_CLK("omap-aes", "ick", "aes_ick"),
 140         DT_CLK(NULL, "aes_ick", "aes_ick"),
 141         DT_CLK(NULL, "pka_ick", "pka_ick"),
 142         DT_CLK(NULL, "usb_fck", "usb_fck"),
 143         DT_CLK(NULL, "timer_32k_ck", "func_32k_ck"),
 144         DT_CLK(NULL, "timer_sys_ck", "sys_ck"),
 145         DT_CLK(NULL, "timer_ext_ck", "alt_ck"),
 146         { .node_name = NULL },
 147 };
 148
 149 static struct ti_dt_clk omap2420_clks[] = {
 150         DT_CLK(NULL, "sys_clkout2_src", "sys_clkout2_src"),
 151         DT_CLK(NULL, "sys_clkout2", "sys_clkout2"),
 152         DT_CLK(NULL, "dsp_ick", "dsp_ick"),
 153         DT_CLK(NULL, "iva1_ifck", "iva1_ifck"),
 154         DT_CLK(NULL, "iva1_mpu_int_ifck", "iva1_mpu_int_ifck"),
 155         DT_CLK(NULL, "wdt3_ick", "wdt3_ick"),
 156         DT_CLK(NULL, "wdt3_fck", "wdt3_fck"),
 157         DT_CLK("mmci-omap.0", "ick", "mmc_ick"),
 158         DT_CLK(NULL, "mmc_ick", "mmc_ick"),
 159         DT_CLK("mmci-omap.0", "fck", "mmc_fck"),
 160         DT_CLK(NULL, "mmc_fck", "mmc_fck"),
 161         DT_CLK(NULL, "eac_ick", "eac_ick"),
 162         DT_CLK(NULL, "eac_fck", "eac_fck"),
 163         DT_CLK(NULL, "i2c1_fck", "i2c1_fck"),
 164         DT_CLK(NULL, "i2c2_fck", "i2c2_fck"),
 165         DT_CLK(NULL, "vlynq_ick", "vlynq_ick"),
 166         DT_CLK(NULL, "vlynq_fck", "vlynq_fck"),
 167         DT_CLK("musb-hdrc", "fck", "osc_ck"),
 168         { .node_name = NULL },
 169 };
 170
 171 static struct ti_dt_clk omap2430_clks[] = {
 172         DT_CLK("twl", "fck", "osc_ck"),
 173         DT_CLK(NULL, "iva2_1_ick", "iva2_1_ick"),
 174         DT_CLK(NULL, "mdm_ick", "mdm_ick"),
 175         DT_CLK(NULL, "mdm_osc_ck", "mdm_osc_ck"),
 176         DT_CLK("omap-mcbsp.3", "ick", "mcbsp3_ick"),
 177         DT_CLK(NULL, "mcbsp3_ick", "mcbsp3_ick"),
 178         DT_CLK(NULL, "mcbsp3_fck", "mcbsp3_fck"),
 179         DT_CLK("omap-mcbsp.4", "ick", "mcbsp4_ick"),
 180         DT_CLK(NULL, "mcbsp4_ick", "mcbsp4_ick"),
 181         DT_CLK(NULL, "mcbsp4_fck", "mcbsp4_fck"),
 182         DT_CLK("omap-mcbsp.5", "ick", "mcbsp5_ick"),
 183         DT_CLK(NULL, "mcbsp5_ick", "mcbsp5_ick"),
 184         DT_CLK(NULL, "mcbsp5_fck", "mcbsp5_fck"),
 185         DT_CLK("omap2_mcspi.3", "ick", "mcspi3_ick"),
 186         DT_CLK(NULL, "mcspi3_ick", "mcspi3_ick"),
 187         DT_CLK(NULL, "mcspi3_fck", "mcspi3_fck"),
 188         DT_CLK(NULL, "icr_ick", "icr_ick"),
 189         DT_CLK(NULL, "i2chs1_fck", "i2chs1_fck"),
 190         DT_CLK(NULL, "i2chs2_fck", "i2chs2_fck"),
 191         DT_CLK("musb-omap2430", "ick", "usbhs_ick"),
 192         DT_CLK(NULL, "usbhs_ick", "usbhs_ick"),
 193         DT_CLK("omap_hsmmc.0", "ick", "mmchs1_ick"),
 194         DT_CLK(NULL, "mmchs1_ick", "mmchs1_ick"),
 195         DT_CLK(NULL, "mmchs1_fck", "mmchs1_fck"),
 196         DT_CLK("omap_hsmmc.1", "ick", "mmchs2_ick"),
 197         DT_CLK(NULL, "mmchs2_ick", "mmchs2_ick"),
 198         DT_CLK(NULL, "mmchs2_fck", "mmchs2_fck"),
 199         DT_CLK(NULL, "gpio5_ick", "gpio5_ick"),
 200         DT_CLK(NULL, "gpio5_fck", "gpio5_fck"),
 201         DT_CLK(NULL, "mdm_intc_ick", "mdm_intc_ick"),
 202         DT_CLK("omap_hsmmc.0", "mmchsdb_fck", "mmchsdb1_fck"),
 203         DT_CLK(NULL, "mmchsdb1_fck", "mmchsdb1_fck"),
 204         DT_CLK("omap_hsmmc.1", "mmchsdb_fck", "mmchsdb2_fck"),
 205         DT_CLK(NULL, "mmchsdb2_fck", "mmchsdb2_fck"),
 206         { .node_name = NULL },
 207 };
 208
 209 static const char *enable_init_clks[] = {
 210         "apll96_ck",
 211         "apll54_ck",
 212         "sync_32k_ick",
 213         "omapctrl_ick",
 214         "gpmc_fck",
 215         "sdrc_ick",
 216 };
 217
 218 enum {
 219         OMAP2_SOC_OMAP2420,
 220         OMAP2_SOC_OMAP2430,
 221 };
 222
 223 static int __init omap2xxx_dt_clk_init(int soc_type)
 224 {
 225         ti_dt_clocks_register(omap2xxx_clks);
 226
 227         if (soc_type == OMAP2_SOC_OMAP2420)
 228                 ti_dt_clocks_register(omap2420_clks);
 229         else
 230                 ti_dt_clocks_register(omap2430_clks);
 231
 232         omap2xxx_clkt_vps_init();
 233
 234         omap2_clk_disable_autoidle_all();
 235
 236         omap2_clk_enable_init_clocks(enable_init_clks,
 237                                      ARRAY_SIZE(enable_init_clks));
 238
 239         pr_info("Clocking rate (Crystal/DPLL/MPU): %ld.%01ld/%ld/%ld MHz\n",
 240                 (clk_get_rate(clk_get_sys(NULL, "sys_ck")) / 1000000),
 241                 (clk_get_rate(clk_get_sys(NULL, "sys_ck")) / 100000) % 10,
 242                 (clk_get_rate(clk_get_sys(NULL, "dpll_ck")) / 1000000),
 243                 (clk_get_rate(clk_get_sys(NULL, "mpu_ck")) / 1000000));
 244
 245         return 0;
 246 }
 247
 248 int __init omap2420_dt_clk_init(void)
 249 {
 250         return omap2xxx_dt_clk_init(OMAP2_SOC_OMAP2420);
 251 }
 252
 253 int __init omap2430_dt_clk_init(void)
 254 {
 255         return omap2xxx_dt_clk_init(OMAP2_SOC_OMAP2430);
 256 }