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
  18 LPSC_CLKDEV1(ide_clkdev,        NULL,           "palm_bk3710");
  19 LPSC_CLKDEV2(emac_clkdev,       NULL,           "davinci_emac.1",
  20                                 "fck",          "davinci_mdio.0");
  21 LPSC_CLKDEV2(aemif_clkdev,      "aemif",        NULL,
  22                                 NULL,           "ti-aemif");
  23 LPSC_CLKDEV1(mcasp0_clkdev,     NULL,           "davinci-mcasp.0");
  24 LPSC_CLKDEV1(mcasp1_clkdev,     NULL,           "davinci-mcasp.1");
  25 LPSC_CLKDEV1(uart0_clkdev,      NULL,           "serial8250.0");
  26 LPSC_CLKDEV1(uart1_clkdev,      NULL,           "serial8250.1");
  27 LPSC_CLKDEV1(uart2_clkdev,      NULL,           "serial8250.2");
  28 LPSC_CLKDEV1(i2c_clkdev,        NULL,           "i2c_davinci.1");
  29 /* REVISIT: gpio-davinci.c should be modified to drop con_id */
  30 LPSC_CLKDEV1(gpio_clkdev,       "gpio",         NULL);
  31 LPSC_CLKDEV1(timer0_clkdev,     "timer0",        NULL);
  32
  33 static 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
  63 int dm646x_psc_init(struct device *dev, void __iomem *base)
  64 {
  65         return davinci_psc_register_clocks(dev, dm646x_psc_info, 46, base);
  66 }
  67
  68 static 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
  78 const 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 };