drivers/clk/davinci/psc-dm644x.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * PSC clock descriptions for TI DaVinci DM644x
   4  *
   5  * Copyright (C) 2018 David Lechner <david@lechnology.com>
   6  */
   7
   8 #include <linux/clk-provider.h>
   9 #include <linux/clk/davinci.h>
  10 #include <linux/clk.h>
  11 #include <linux/clkdev.h>
  12 #include <linux/init.h>
  13 #include <linux/kernel.h>
  14 #include <linux/types.h>
  15
  16 #include "psc.h"
  17
  18 LPSC_CLKDEV1(vpss_master_clkdev,        "master",       "vpss");
  19 LPSC_CLKDEV1(vpss_slave_clkdev,         "slave",        "vpss");
  20 LPSC_CLKDEV2(emac_clkdev,               NULL,           "davinci_emac.1",
  21                                         "fck",          "davinci_mdio.0");
  22 LPSC_CLKDEV1(usb_clkdev,                "usb",          NULL);
  23 LPSC_CLKDEV1(ide_clkdev,                NULL,           "palm_bk3710");
  24 LPSC_CLKDEV2(aemif_clkdev,              "aemif",        NULL,
  25                                         NULL,           "ti-aemif");
  26 LPSC_CLKDEV1(mmcsd_clkdev,              NULL,           "dm6441-mmc.0");
  27 LPSC_CLKDEV1(asp0_clkdev,               NULL,           "davinci-mcbsp");
  28 LPSC_CLKDEV1(i2c_clkdev,                NULL,           "i2c_davinci.1");
  29 LPSC_CLKDEV1(uart0_clkdev,              NULL,           "serial8250.0");
  30 LPSC_CLKDEV1(uart1_clkdev,              NULL,           "serial8250.1");
  31 LPSC_CLKDEV1(uart2_clkdev,              NULL,           "serial8250.2");
  32 /* REVISIT: gpio-davinci.c should be modified to drop con_id */
  33 LPSC_CLKDEV1(gpio_clkdev,               "gpio",         NULL);
  34 LPSC_CLKDEV1(timer0_clkdev,             "timer0",       NULL);
  35 LPSC_CLKDEV1(timer2_clkdev,             NULL,           "davinci-wdt");
  36
  37 static const struct davinci_lpsc_clk_info dm644x_psc_info[] = {
  38         LPSC(0,  0, vpss_master, pll1_sysclk3, vpss_master_clkdev, 0),
  39         LPSC(1,  0, vpss_slave,  pll1_sysclk3, vpss_slave_clkdev,  0),
  40         LPSC(6,  0, emac,        pll1_sysclk5, emac_clkdev,        0),
  41         LPSC(9,  0, usb,         pll1_sysclk5, usb_clkdev,         0),
  42         LPSC(10, 0, ide,         pll1_sysclk5, ide_clkdev,         0),
  43         LPSC(11, 0, vlynq,       pll1_sysclk5, NULL,               0),
  44         LPSC(14, 0, aemif,       pll1_sysclk5, aemif_clkdev,       0),
  45         LPSC(15, 0, mmcsd,       pll1_sysclk5, mmcsd_clkdev,       0),
  46         LPSC(17, 0, asp0,        pll1_sysclk5, asp0_clkdev,        0),
  47         LPSC(18, 0, i2c,         pll1_auxclk,  i2c_clkdev,         0),
  48         LPSC(19, 0, uart0,       pll1_auxclk,  uart0_clkdev,       0),
  49         LPSC(20, 0, uart1,       pll1_auxclk,  uart1_clkdev,       0),
  50         LPSC(21, 0, uart2,       pll1_auxclk,  uart2_clkdev,       0),
  51         LPSC(22, 0, spi,         pll1_sysclk5, NULL,               0),
  52         LPSC(23, 0, pwm0,        pll1_auxclk,  NULL,               0),
  53         LPSC(24, 0, pwm1,        pll1_auxclk,  NULL,               0),
  54         LPSC(25, 0, pwm2,        pll1_auxclk,  NULL,               0),
  55         LPSC(26, 0, gpio,        pll1_sysclk5, gpio_clkdev,        0),
  56         LPSC(27, 0, timer0,      pll1_auxclk,  timer0_clkdev,      LPSC_ALWAYS_ENABLED),
  57         LPSC(28, 0, timer1,      pll1_auxclk,  NULL,               0),
  58         /* REVISIT: why can't this be disabled? */
  59         LPSC(29, 0, timer2,      pll1_auxclk,  timer2_clkdev,      LPSC_ALWAYS_ENABLED),
  60         LPSC(31, 0, arm,         pll1_sysclk2, NULL,               LPSC_ALWAYS_ENABLED),
  61         /* REVISIT how to disable? */
  62         LPSC(39, 1, dsp,         pll1_sysclk1, NULL,               LPSC_ALWAYS_ENABLED),
  63         /* REVISIT how to disable? */
  64         LPSC(40, 1, vicp,        pll1_sysclk2, NULL,               LPSC_ALWAYS_ENABLED),
  65         { }
  66 };
  67
  68 int dm644x_psc_init(struct device *dev, void __iomem *base)
  69 {
  70         return davinci_psc_register_clocks(dev, dm644x_psc_info, 41, base);
  71 }
  72
  73 static struct clk_bulk_data dm644x_psc_parent_clks[] = {
  74         { .id = "pll1_sysclk1" },
  75         { .id = "pll1_sysclk2" },
  76         { .id = "pll1_sysclk3" },
  77         { .id = "pll1_sysclk5" },
  78         { .id = "pll1_auxclk"  },
  79 };
  80
  81 const struct davinci_psc_init_data dm644x_psc_init_data = {
  82         .parent_clks            = dm644x_psc_parent_clks,
  83         .num_parent_clks        = ARRAY_SIZE(dm644x_psc_parent_clks),
  84         .psc_init               = &dm644x_psc_init,
  85 };