LXR linux/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
  18LPSC_CLKDEV1(vpss_master_clkdev,        "master",       "vpss");
  19LPSC_CLKDEV1(vpss_slave_clkdev,         "slave",        "vpss");
  20LPSC_CLKDEV2(emac_clkdev,               NULL,           "davinci_emac.1",
  21                                        "fck",          "davinci_mdio.0");
  22LPSC_CLKDEV1(usb_clkdev,                "usb",          NULL);
  23LPSC_CLKDEV1(ide_clkdev,                NULL,           "palm_bk3710");
  24LPSC_CLKDEV2(aemif_clkdev,              "aemif",        NULL,
  25                                        NULL,           "ti-aemif");
  26LPSC_CLKDEV1(mmcsd_clkdev,              NULL,           "dm6441-mmc.0");
  27LPSC_CLKDEV1(asp0_clkdev,               NULL,           "davinci-mcbsp");
  28LPSC_CLKDEV1(i2c_clkdev,                NULL,           "i2c_davinci.1");
  29LPSC_CLKDEV1(uart0_clkdev,              NULL,           "serial8250.0");
  30LPSC_CLKDEV1(uart1_clkdev,              NULL,           "serial8250.1");
  31LPSC_CLKDEV1(uart2_clkdev,              NULL,           "serial8250.2");
  32/* REVISIT: gpio-davinci.c should be modified to drop con_id */
  33LPSC_CLKDEV1(gpio_clkdev,               "gpio",         NULL);
  34LPSC_CLKDEV1(timer0_clkdev,             "timer0",       NULL);
  35LPSC_CLKDEV1(timer2_clkdev,             NULL,           "davinci-wdt");
  36
  37static 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
  68int dm644x_psc_init(struct device *dev, void __iomem *base)
  69{
  70        return davinci_psc_register_clocks(dev, dm644x_psc_info, 41, base);
  71}
  72
  73static 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
  81const 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};
  86