drivers/clk/davinci/pll-da830.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * PLL clock descriptions for TI DA830/OMAP-L137/AM17XX
   4  *
   5  * Copyright (C) 2018 David Lechner <david@lechnology.com>
   6  */
   7
   8 #include <linux/clkdev.h>
   9 #include <linux/clk/davinci.h>
  10 #include <linux/bitops.h>
  11 #include <linux/init.h>
  12 #include <linux/types.h>
  13
  14 #include "pll.h"
  15
  16 static const struct davinci_pll_clk_info da830_pll_info = {
  17         .name = "pll0",
  18         .pllm_mask = GENMASK(4, 0),
  19         .pllm_min = 4,
  20         .pllm_max = 32,
  21         .pllout_min_rate = 300000000,
  22         .pllout_max_rate = 600000000,
  23         .flags = PLL_HAS_CLKMODE | PLL_HAS_PREDIV | PLL_HAS_POSTDIV,
  24 };
  25
  26 /*
  27  * NB: Technically, the clocks flagged as SYSCLK_FIXED_DIV are "fixed ratio",
  28  * meaning that we could change the divider as long as we keep the correct
  29  * ratio between all of the clocks, but we don't support that because there is
  30  * currently not a need for it.
  31  */
  32
  33 SYSCLK(2, pll0_sysclk2, pll0_pllen, 5, SYSCLK_FIXED_DIV);
  34 SYSCLK(3, pll0_sysclk3, pll0_pllen, 5, 0);
  35 SYSCLK(4, pll0_sysclk4, pll0_pllen, 5, SYSCLK_FIXED_DIV);
  36 SYSCLK(5, pll0_sysclk5, pll0_pllen, 5, 0);
  37 SYSCLK(6, pll0_sysclk6, pll0_pllen, 5, SYSCLK_FIXED_DIV);
  38 SYSCLK(7, pll0_sysclk7, pll0_pllen, 5, 0);
  39
  40 int da830_pll_init(struct device *dev, void __iomem *base, struct regmap *cfgchip)
  41 {
  42         struct clk *clk;
  43
  44         davinci_pll_clk_register(dev, &da830_pll_info, "ref_clk", base, cfgchip);
  45
  46         clk = davinci_pll_sysclk_register(dev, &pll0_sysclk2, base);
  47         clk_register_clkdev(clk, "pll0_sysclk2", "da830-psc0");
  48         clk_register_clkdev(clk, "pll0_sysclk2", "da830-psc1");
  49
  50         clk = davinci_pll_sysclk_register(dev, &pll0_sysclk3, base);
  51         clk_register_clkdev(clk, "pll0_sysclk3", "da830-psc0");
  52
  53         clk = davinci_pll_sysclk_register(dev, &pll0_sysclk4, base);
  54         clk_register_clkdev(clk, "pll0_sysclk4", "da830-psc0");
  55         clk_register_clkdev(clk, "pll0_sysclk4", "da830-psc1");
  56
  57         clk = davinci_pll_sysclk_register(dev, &pll0_sysclk5, base);
  58         clk_register_clkdev(clk, "pll0_sysclk5", "da830-psc1");
  59
  60         clk = davinci_pll_sysclk_register(dev, &pll0_sysclk6, base);
  61         clk_register_clkdev(clk, "pll0_sysclk6", "da830-psc0");
  62
  63         clk = davinci_pll_sysclk_register(dev, &pll0_sysclk7, base);
  64
  65         clk = davinci_pll_auxclk_register(dev, "pll0_auxclk", base);
  66         clk_register_clkdev(clk, NULL, "i2c_davinci.1");
  67         clk_register_clkdev(clk, "timer0", NULL);
  68         clk_register_clkdev(clk, NULL, "davinci-wdt");
  69
  70         return 0;
  71 }