clk/davinci/psc-dm644x.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * PSC clock descriptions for TI DaVinci DM644x
0004  *
0005  * Copyright (C) 2018 David Lechner <david@lechnology.com>
0006  */
0007
0008 #include <linux/clk-provider.h>
0009 #include <linux/clk/davinci.h>
0010 #include <linux/clk.h>
0011 #include <linux/clkdev.h>
0012 #include <linux/init.h>
0013 #include <linux/kernel.h>
0014 #include <linux/types.h>
0015
0016 #include "psc.h"
0017
0018 LPSC_CLKDEV1(vpss_master_clkdev,    "master",   "vpss");
0019 LPSC_CLKDEV1(vpss_slave_clkdev,     "slave",    "vpss");
0020 LPSC_CLKDEV2(emac_clkdev,       NULL,       "davinci_emac.1",
0021                     "fck",      "davinci_mdio.0");
0022 LPSC_CLKDEV1(usb_clkdev,        "usb",      NULL);
0023 LPSC_CLKDEV1(ide_clkdev,        NULL,       "palm_bk3710");
0024 LPSC_CLKDEV2(aemif_clkdev,      "aemif",    NULL,
0025                     NULL,       "ti-aemif");
0026 LPSC_CLKDEV1(mmcsd_clkdev,      NULL,       "dm6441-mmc.0");
0027 LPSC_CLKDEV1(asp0_clkdev,       NULL,       "davinci-mcbsp");
0028 LPSC_CLKDEV1(i2c_clkdev,        NULL,       "i2c_davinci.1");
0029 LPSC_CLKDEV1(uart0_clkdev,      NULL,       "serial8250.0");
0030 LPSC_CLKDEV1(uart1_clkdev,      NULL,       "serial8250.1");
0031 LPSC_CLKDEV1(uart2_clkdev,      NULL,       "serial8250.2");
0032 /* REVISIT: gpio-davinci.c should be modified to drop con_id */
0033 LPSC_CLKDEV1(gpio_clkdev,       "gpio",     NULL);
0034 LPSC_CLKDEV1(timer0_clkdev,     "timer0",   NULL);
0035 LPSC_CLKDEV1(timer2_clkdev,     NULL,       "davinci-wdt");
0036
0037 static const struct davinci_lpsc_clk_info dm644x_psc_info[] = {
0038     LPSC(0,  0, vpss_master, pll1_sysclk3, vpss_master_clkdev, 0),
0039     LPSC(1,  0, vpss_slave,  pll1_sysclk3, vpss_slave_clkdev,  0),
0040     LPSC(6,  0, emac,        pll1_sysclk5, emac_clkdev,        0),
0041     LPSC(9,  0, usb,         pll1_sysclk5, usb_clkdev,         0),
0042     LPSC(10, 0, ide,         pll1_sysclk5, ide_clkdev,         0),
0043     LPSC(11, 0, vlynq,       pll1_sysclk5, NULL,               0),
0044     LPSC(14, 0, aemif,       pll1_sysclk5, aemif_clkdev,       0),
0045     LPSC(15, 0, mmcsd,       pll1_sysclk5, mmcsd_clkdev,       0),
0046     LPSC(17, 0, asp0,        pll1_sysclk5, asp0_clkdev,        0),
0047     LPSC(18, 0, i2c,         pll1_auxclk,  i2c_clkdev,         0),
0048     LPSC(19, 0, uart0,       pll1_auxclk,  uart0_clkdev,       0),
0049     LPSC(20, 0, uart1,       pll1_auxclk,  uart1_clkdev,       0),
0050     LPSC(21, 0, uart2,       pll1_auxclk,  uart2_clkdev,       0),
0051     LPSC(22, 0, spi,         pll1_sysclk5, NULL,               0),
0052     LPSC(23, 0, pwm0,        pll1_auxclk,  NULL,               0),
0053     LPSC(24, 0, pwm1,        pll1_auxclk,  NULL,               0),
0054     LPSC(25, 0, pwm2,        pll1_auxclk,  NULL,               0),
0055     LPSC(26, 0, gpio,        pll1_sysclk5, gpio_clkdev,        0),
0056     LPSC(27, 0, timer0,      pll1_auxclk,  timer0_clkdev,      LPSC_ALWAYS_ENABLED),
0057     LPSC(28, 0, timer1,      pll1_auxclk,  NULL,               0),
0058     /* REVISIT: why can't this be disabled? */
0059     LPSC(29, 0, timer2,      pll1_auxclk,  timer2_clkdev,      LPSC_ALWAYS_ENABLED),
0060     LPSC(31, 0, arm,         pll1_sysclk2, NULL,               LPSC_ALWAYS_ENABLED),
0061     /* REVISIT how to disable? */
0062     LPSC(39, 1, dsp,         pll1_sysclk1, NULL,               LPSC_ALWAYS_ENABLED),
0063     /* REVISIT how to disable? */
0064     LPSC(40, 1, vicp,        pll1_sysclk2, NULL,               LPSC_ALWAYS_ENABLED),
0065     { }
0066 };
0067
0068 int dm644x_psc_init(struct device *dev, void __iomem *base)
0069 {
0070     return davinci_psc_register_clocks(dev, dm644x_psc_info, 41, base);
0071 }
0072
0073 static struct clk_bulk_data dm644x_psc_parent_clks[] = {
0074     { .id = "pll1_sysclk1" },
0075     { .id = "pll1_sysclk2" },
0076     { .id = "pll1_sysclk3" },
0077     { .id = "pll1_sysclk5" },
0078     { .id = "pll1_auxclk"  },
0079 };
0080
0081 const struct davinci_psc_init_data dm644x_psc_init_data = {
0082     .parent_clks        = dm644x_psc_parent_clks,
0083     .num_parent_clks    = ARRAY_SIZE(dm644x_psc_parent_clks),
0084     .psc_init       = &dm644x_psc_init,
0085 };