LXR linux/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
  20static 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
  25static 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
  58const struct omap_clkctrl_data dm816_clkctrl_data[] __initconst = {
  59        { 0x48180500, dm816_default_clkctrl_regs },
  60        { 0x48181400, dm816_alwon_clkctrl_regs },
  61        { 0 },
  62};
  63
  64static 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
  72static const char *enable_init_clks[] = {
  73        "ddr_pll_clk1",
  74        "ddr_pll_clk2",
  75        "ddr_pll_clk3",
  76        "sysclk6_ck",
  77};
  78
  79int __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}
  89