LXR linux/drivers/clk/davinci/psc-dm646x.c

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * PSC clock descriptions for TI DaVinci DM646x
   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(ide_clkdev,        NULL,           "palm_bk3710");
  19LPSC_CLKDEV2(emac_clkdev,       NULL,           "davinci_emac.1",
  20                                "fck",          "davinci_mdio.0");
  21LPSC_CLKDEV2(aemif_clkdev,      "aemif",        NULL,
  22                                NULL,           "ti-aemif");
  23LPSC_CLKDEV1(mcasp0_clkdev,     NULL,           "davinci-mcasp.0");
  24LPSC_CLKDEV1(mcasp1_clkdev,     NULL,           "davinci-mcasp.1");
  25LPSC_CLKDEV1(uart0_clkdev,      NULL,           "serial8250.0");
  26LPSC_CLKDEV1(uart1_clkdev,      NULL,           "serial8250.1");
  27LPSC_CLKDEV1(uart2_clkdev,      NULL,           "serial8250.2");
  28LPSC_CLKDEV1(i2c_clkdev,        NULL,           "i2c_davinci.1");
  29/* REVISIT: gpio-davinci.c should be modified to drop con_id */
  30LPSC_CLKDEV1(gpio_clkdev,       "gpio",         NULL);
  31LPSC_CLKDEV1(timer0_clkdev,     "timer0",        NULL);
  32
  33static const struct davinci_lpsc_clk_info dm646x_psc_info[] = {
  34        LPSC(0,  0, arm,      pll1_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
  35        /* REVISIT how to disable? */
  36        LPSC(1,  0, dsp,      pll1_sysclk1, NULL,          LPSC_ALWAYS_ENABLED),
  37        LPSC(4,  0, edma_cc,  pll1_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
  38        LPSC(5,  0, edma_tc0, pll1_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
  39        LPSC(6,  0, edma_tc1, pll1_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
  40        LPSC(7,  0, edma_tc2, pll1_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
  41        LPSC(8,  0, edma_tc3, pll1_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
  42        LPSC(10, 0, ide,      pll1_sysclk4, ide_clkdev,    0),
  43        LPSC(14, 0, emac,     pll1_sysclk3, emac_clkdev,   0),
  44        LPSC(16, 0, vpif0,    ref_clk,      NULL,          LPSC_ALWAYS_ENABLED),
  45        LPSC(17, 0, vpif1,    ref_clk,      NULL,          LPSC_ALWAYS_ENABLED),
  46        LPSC(21, 0, aemif,    pll1_sysclk3, aemif_clkdev,  LPSC_ALWAYS_ENABLED),
  47        LPSC(22, 0, mcasp0,   pll1_sysclk3, mcasp0_clkdev, 0),
  48        LPSC(23, 0, mcasp1,   pll1_sysclk3, mcasp1_clkdev, 0),
  49        LPSC(26, 0, uart0,    aux_clkin,    uart0_clkdev,  0),
  50        LPSC(27, 0, uart1,    aux_clkin,    uart1_clkdev,  0),
  51        LPSC(28, 0, uart2,    aux_clkin,    uart2_clkdev,  0),
  52        /* REVIST: disabling hangs system */
  53        LPSC(29, 0, pwm0,     pll1_sysclk3, NULL,          LPSC_ALWAYS_ENABLED),
  54        /* REVIST: disabling hangs system */
  55        LPSC(30, 0, pwm1,     pll1_sysclk3, NULL,          LPSC_ALWAYS_ENABLED),
  56        LPSC(31, 0, i2c,      pll1_sysclk3, i2c_clkdev,    0),
  57        LPSC(33, 0, gpio,     pll1_sysclk3, gpio_clkdev,   0),
  58        LPSC(34, 0, timer0,   pll1_sysclk3, timer0_clkdev, LPSC_ALWAYS_ENABLED),
  59        LPSC(35, 0, timer1,   pll1_sysclk3, NULL,          0),
  60        { }
  61};
  62
  63int dm646x_psc_init(struct device *dev, void __iomem *base)
  64{
  65        return davinci_psc_register_clocks(dev, dm646x_psc_info, 46, base);
  66}
  67
  68static struct clk_bulk_data dm646x_psc_parent_clks[] = {
  69        { .id = "ref_clk"      },
  70        { .id = "aux_clkin"    },
  71        { .id = "pll1_sysclk1" },
  72        { .id = "pll1_sysclk2" },
  73        { .id = "pll1_sysclk3" },
  74        { .id = "pll1_sysclk4" },
  75        { .id = "pll1_sysclk5" },
  76};
  77
  78const struct davinci_psc_init_data dm646x_psc_init_data = {
  79        .parent_clks            = dm646x_psc_parent_clks,
  80        .num_parent_clks        = ARRAY_SIZE(dm646x_psc_parent_clks),
  81        .psc_init               = &dm646x_psc_init,
  82};
  83