clk/davinci/psc-dm646x.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * PSC clock descriptions for TI DaVinci DM646x
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(ide_clkdev,    NULL,       "palm_bk3710");
0019 LPSC_CLKDEV2(emac_clkdev,   NULL,       "davinci_emac.1",
0020                 "fck",      "davinci_mdio.0");
0021 LPSC_CLKDEV2(aemif_clkdev,  "aemif",    NULL,
0022                 NULL,       "ti-aemif");
0023 LPSC_CLKDEV1(mcasp0_clkdev, NULL,       "davinci-mcasp.0");
0024 LPSC_CLKDEV1(mcasp1_clkdev, NULL,       "davinci-mcasp.1");
0025 LPSC_CLKDEV1(uart0_clkdev,  NULL,       "serial8250.0");
0026 LPSC_CLKDEV1(uart1_clkdev,  NULL,       "serial8250.1");
0027 LPSC_CLKDEV1(uart2_clkdev,  NULL,       "serial8250.2");
0028 LPSC_CLKDEV1(i2c_clkdev,    NULL,       "i2c_davinci.1");
0029 /* REVISIT: gpio-davinci.c should be modified to drop con_id */
0030 LPSC_CLKDEV1(gpio_clkdev,   "gpio",     NULL);
0031 LPSC_CLKDEV1(timer0_clkdev, "timer0",    NULL);
0032
0033 static const struct davinci_lpsc_clk_info dm646x_psc_info[] = {
0034     LPSC(0,  0, arm,      pll1_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
0035     /* REVISIT how to disable? */
0036     LPSC(1,  0, dsp,      pll1_sysclk1, NULL,          LPSC_ALWAYS_ENABLED),
0037     LPSC(4,  0, edma_cc,  pll1_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
0038     LPSC(5,  0, edma_tc0, pll1_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
0039     LPSC(6,  0, edma_tc1, pll1_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
0040     LPSC(7,  0, edma_tc2, pll1_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
0041     LPSC(8,  0, edma_tc3, pll1_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
0042     LPSC(10, 0, ide,      pll1_sysclk4, ide_clkdev,    0),
0043     LPSC(14, 0, emac,     pll1_sysclk3, emac_clkdev,   0),
0044     LPSC(16, 0, vpif0,    ref_clk,      NULL,          LPSC_ALWAYS_ENABLED),
0045     LPSC(17, 0, vpif1,    ref_clk,      NULL,          LPSC_ALWAYS_ENABLED),
0046     LPSC(21, 0, aemif,    pll1_sysclk3, aemif_clkdev,  LPSC_ALWAYS_ENABLED),
0047     LPSC(22, 0, mcasp0,   pll1_sysclk3, mcasp0_clkdev, 0),
0048     LPSC(23, 0, mcasp1,   pll1_sysclk3, mcasp1_clkdev, 0),
0049     LPSC(26, 0, uart0,    aux_clkin,    uart0_clkdev,  0),
0050     LPSC(27, 0, uart1,    aux_clkin,    uart1_clkdev,  0),
0051     LPSC(28, 0, uart2,    aux_clkin,    uart2_clkdev,  0),
0052     /* REVIST: disabling hangs system */
0053     LPSC(29, 0, pwm0,     pll1_sysclk3, NULL,          LPSC_ALWAYS_ENABLED),
0054     /* REVIST: disabling hangs system */
0055     LPSC(30, 0, pwm1,     pll1_sysclk3, NULL,          LPSC_ALWAYS_ENABLED),
0056     LPSC(31, 0, i2c,      pll1_sysclk3, i2c_clkdev,    0),
0057     LPSC(33, 0, gpio,     pll1_sysclk3, gpio_clkdev,   0),
0058     LPSC(34, 0, timer0,   pll1_sysclk3, timer0_clkdev, LPSC_ALWAYS_ENABLED),
0059     LPSC(35, 0, timer1,   pll1_sysclk3, NULL,          0),
0060     { }
0061 };
0062
0063 int dm646x_psc_init(struct device *dev, void __iomem *base)
0064 {
0065     return davinci_psc_register_clocks(dev, dm646x_psc_info, 46, base);
0066 }
0067
0068 static struct clk_bulk_data dm646x_psc_parent_clks[] = {
0069     { .id = "ref_clk"      },
0070     { .id = "aux_clkin"    },
0071     { .id = "pll1_sysclk1" },
0072     { .id = "pll1_sysclk2" },
0073     { .id = "pll1_sysclk3" },
0074     { .id = "pll1_sysclk4" },
0075     { .id = "pll1_sysclk5" },
0076 };
0077
0078 const struct davinci_psc_init_data dm646x_psc_init_data = {
0079     .parent_clks        = dm646x_psc_parent_clks,
0080     .num_parent_clks    = ARRAY_SIZE(dm646x_psc_parent_clks),
0081     .psc_init       = &dm646x_psc_init,
0082 };