drivers/clk/ti/clk-816x.c

   1 /*
   2  * This program is free software; you can redistribute it and/or
   3  * modify it under the terms of the GNU General Public License as
   4  * published by the Free Software Foundation version 2.
   5  *
   6  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
   7  * kind, whether express or implied; without even the implied warranty
   8  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
   9  * GNU General Public License for more details.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/list.h>
  14 #include <linux/clk-provider.h>
  15 #include <linux/clk/ti.h>
  16 #include <dt-bindings/clock/dm816.h>
  17
  18 #include "clock.h"
  19
  20 static const struct omap_clkctrl_reg_data dm816_default_clkctrl_regs[] __initconst = {
  21         { DM816_USB_OTG_HS_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" },
  22         { 0 },
  23 };
  24
  25 static const struct omap_clkctrl_reg_data dm816_alwon_clkctrl_regs[] __initconst = {
  26         { DM816_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
  27         { DM816_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
  28         { DM816_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
  29         { DM816_GPIO1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" },
  30         { DM816_GPIO2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" },
  31         { DM816_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
  32         { DM816_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
  33         { DM816_TIMER1_CLKCTRL, NULL, CLKF_SW_SUP, "timer1_fck" },
  34         { DM816_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "timer2_fck" },
  35         { DM816_TIMER3_CLKCTRL, NULL, CLKF_SW_SUP, "timer3_fck" },
  36         { DM816_TIMER4_CLKCTRL, NULL, CLKF_SW_SUP, "timer4_fck" },
  37         { DM816_TIMER5_CLKCTRL, NULL, CLKF_SW_SUP, "timer5_fck" },
  38         { DM816_TIMER6_CLKCTRL, NULL, CLKF_SW_SUP, "timer6_fck" },
  39         { DM816_TIMER7_CLKCTRL, NULL, CLKF_SW_SUP, "timer7_fck" },
  40         { DM816_WD_TIMER_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk18_ck" },
  41         { DM816_MCSPI1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
  42         { DM816_MAILBOX_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" },
  43         { DM816_SPINBOX_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" },
  44         { DM816_MMC1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
  45         { DM816_GPMC_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" },
  46         { DM816_DAVINCI_MDIO_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk24_ck" },
  47         { DM816_EMAC1_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk24_ck" },
  48         { DM816_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk2_ck" },
  49         { DM816_RTC_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk18_ck" },
  50         { DM816_TPCC_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" },
  51         { DM816_TPTC0_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" },
  52         { DM816_TPTC1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" },
  53         { DM816_TPTC2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" },
  54         { DM816_TPTC3_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" },
  55         { 0 },
  56 };
  57
  58 const struct omap_clkctrl_data dm816_clkctrl_data[] __initconst = {
  59         { 0x48180500, dm816_default_clkctrl_regs },
  60         { 0x48181400, dm816_alwon_clkctrl_regs },
  61         { 0 },
  62 };
  63
  64 static struct ti_dt_clk dm816x_clks[] = {
  65         DT_CLK(NULL, "sys_clkin", "sys_clkin_ck"),
  66         DT_CLK(NULL, "timer_sys_ck", "sys_clkin_ck"),
  67         DT_CLK(NULL, "timer_32k_ck", "sysclk18_ck"),
  68         DT_CLK(NULL, "timer_ext_ck", "tclkin_ck"),
  69         { .node_name = NULL },
  70 };
  71
  72 static const char *enable_init_clks[] = {
  73         "ddr_pll_clk1",
  74         "ddr_pll_clk2",
  75         "ddr_pll_clk3",
  76         "sysclk6_ck",
  77 };
  78
  79 int __init dm816x_dt_clk_init(void)
  80 {
  81         ti_dt_clocks_register(dm816x_clks);
  82         omap2_clk_disable_autoidle_all();
  83         ti_clk_add_aliases();
  84         omap2_clk_enable_init_clocks(enable_init_clks,
  85                                      ARRAY_SIZE(enable_init_clks));
  86
  87         return 0;
  88 }