drivers/clk/davinci/psc-dm355.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * PSC clock descriptions for TI DaVinci DM355
   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_CLKDEV1(spi1_clkdev,               NULL,           "spi_davinci.1");
  21 LPSC_CLKDEV1(mmcsd1_clkdev,             NULL,           "dm6441-mmc.1");
  22 LPSC_CLKDEV1(mcbsp1_clkdev,             NULL,           "davinci-mcbsp.1");
  23 LPSC_CLKDEV1(usb_clkdev,                "usb",          NULL);
  24 LPSC_CLKDEV1(spi2_clkdev,               NULL,           "spi_davinci.2");
  25 LPSC_CLKDEV1(aemif_clkdev,              "aemif",        NULL);
  26 LPSC_CLKDEV1(mmcsd0_clkdev,             NULL,           "dm6441-mmc.0");
  27 LPSC_CLKDEV1(mcbsp0_clkdev,             NULL,           "davinci-mcbsp.0");
  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 LPSC_CLKDEV1(spi0_clkdev,               NULL,           "spi_davinci.0");
  33 /* REVISIT: gpio-davinci.c should be modified to drop con_id */
  34 LPSC_CLKDEV1(gpio_clkdev,               "gpio",         NULL);
  35 LPSC_CLKDEV1(timer0_clkdev,             "timer0",       NULL);
  36 LPSC_CLKDEV1(timer2_clkdev,             NULL,           "davinci-wdt");
  37 LPSC_CLKDEV1(vpss_dac_clkdev,           "vpss_dac",     NULL);
  38
  39 static const struct davinci_lpsc_clk_info dm355_psc_info[] = {
  40         LPSC(0,  0, vpss_master, pll1_sysclk4, vpss_master_clkdev, 0),
  41         LPSC(1,  0, vpss_slave,  pll1_sysclk4, vpss_slave_clkdev,  0),
  42         LPSC(5,  0, timer3,      pll1_auxclk,  NULL,               0),
  43         LPSC(6,  0, spi1,        pll1_sysclk2, spi1_clkdev,        0),
  44         LPSC(7,  0, mmcsd1,      pll1_sysclk2, mmcsd1_clkdev,      0),
  45         LPSC(8,  0, asp1,        pll1_sysclk2, mcbsp1_clkdev,      0),
  46         LPSC(9,  0, usb,         pll1_sysclk2, usb_clkdev,         0),
  47         LPSC(10, 0, pwm3,        pll1_auxclk,  NULL,               0),
  48         LPSC(11, 0, spi2,        pll1_sysclk2, spi2_clkdev,        0),
  49         LPSC(12, 0, rto,         pll1_auxclk,  NULL,               0),
  50         LPSC(14, 0, aemif,       pll1_sysclk2, aemif_clkdev,       0),
  51         LPSC(15, 0, mmcsd0,      pll1_sysclk2, mmcsd0_clkdev,      0),
  52         LPSC(17, 0, asp0,        pll1_sysclk2, mcbsp0_clkdev,      0),
  53         LPSC(18, 0, i2c,         pll1_auxclk,  i2c_clkdev,         0),
  54         LPSC(19, 0, uart0,       pll1_auxclk,  uart0_clkdev,       0),
  55         LPSC(20, 0, uart1,       pll1_auxclk,  uart1_clkdev,       0),
  56         LPSC(21, 0, uart2,       pll1_sysclk2, uart2_clkdev,       0),
  57         LPSC(22, 0, spi0,        pll1_sysclk2, spi0_clkdev,        0),
  58         LPSC(23, 0, pwm0,        pll1_auxclk,  NULL,               0),
  59         LPSC(24, 0, pwm1,        pll1_auxclk,  NULL,               0),
  60         LPSC(25, 0, pwm2,        pll1_auxclk,  NULL,               0),
  61         LPSC(26, 0, gpio,        pll1_sysclk2, gpio_clkdev,        0),
  62         LPSC(27, 0, timer0,      pll1_auxclk,  timer0_clkdev,      LPSC_ALWAYS_ENABLED),
  63         LPSC(28, 0, timer1,      pll1_auxclk,  NULL,               0),
  64         /* REVISIT: why can't this be disabled? */
  65         LPSC(29, 0, timer2,      pll1_auxclk,  timer2_clkdev,      LPSC_ALWAYS_ENABLED),
  66         LPSC(31, 0, arm,         pll1_sysclk1, NULL,               LPSC_ALWAYS_ENABLED),
  67         LPSC(40, 0, mjcp,        pll1_sysclk1, NULL,               0),
  68         LPSC(41, 0, vpss_dac,    pll1_sysclk3, vpss_dac_clkdev,    0),
  69         { }
  70 };
  71
  72 int dm355_psc_init(struct device *dev, void __iomem *base)
  73 {
  74         return davinci_psc_register_clocks(dev, dm355_psc_info, 42, base);
  75 }
  76
  77 static struct clk_bulk_data dm355_psc_parent_clks[] = {
  78         { .id = "pll1_sysclk1" },
  79         { .id = "pll1_sysclk2" },
  80         { .id = "pll1_sysclk3" },
  81         { .id = "pll1_sysclk4" },
  82         { .id = "pll1_auxclk"  },
  83 };
  84
  85 const struct davinci_psc_init_data dm355_psc_init_data = {
  86         .parent_clks            = dm355_psc_parent_clks,
  87         .num_parent_clks        = ARRAY_SIZE(dm355_psc_parent_clks),
  88         .psc_init               = &dm355_psc_init,
  89 };