1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Toshiba Visconti PLL controller
4 *
5 * Copyright (c) 2021 TOSHIBA CORPORATION
6 * Copyright (c) 2021 Toshiba Electronic Devices & Storage Corporation
7 *
8 * Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
9 */
10
11#include <linux/clk-provider.h>
12#include <linux/of_address.h>
13#include <linux/slab.h>
14
15#include <dt-bindings/clock/toshiba,tmpv770x.h>
16
17#include "pll.h"
18
19static DEFINE_SPINLOCK(tmpv770x_pll_lock);
20
21static const struct visconti_pll_rate_table pipll0_rates[] __initconst = {
22 VISCONTI_PLL_RATE(840000000, 0x1, 0x0, 0x1, 0x54, 0x000000, 0x2, 0x1),
23 VISCONTI_PLL_RATE(780000000, 0x1, 0x0, 0x1, 0x4e, 0x000000, 0x2, 0x1),
24 VISCONTI_PLL_RATE(600000000, 0x1, 0x0, 0x1, 0x3c, 0x000000, 0x2, 0x1),
25 { /* sentinel */ },
26};
27
28static const struct visconti_pll_rate_table piddrcpll_rates[] __initconst = {
29 VISCONTI_PLL_RATE(780000000, 0x1, 0x0, 0x1, 0x4e, 0x000000, 0x2, 0x1),
30 VISCONTI_PLL_RATE(760000000, 0x1, 0x0, 0x1, 0x4c, 0x000000, 0x2, 0x1),
31 { /* sentinel */ },
32};
33
34static const struct visconti_pll_rate_table pivoifpll_rates[] __initconst = {
35 VISCONTI_PLL_RATE(165000000, 0x1, 0x0, 0x1, 0x42, 0x000000, 0x4, 0x2),
36 VISCONTI_PLL_RATE(148500000, 0x1, 0x1, 0x1, 0x3b, 0x666666, 0x4, 0x2),
37 VISCONTI_PLL_RATE(96000000, 0x1, 0x0, 0x1, 0x30, 0x000000, 0x5, 0x2),
38 VISCONTI_PLL_RATE(74250000, 0x1, 0x1, 0x1, 0x3b, 0x666666, 0x4, 0x4),
39 VISCONTI_PLL_RATE(54000000, 0x1, 0x0, 0x1, 0x36, 0x000000, 0x5, 0x4),
40 VISCONTI_PLL_RATE(48000000, 0x1, 0x0, 0x1, 0x30, 0x000000, 0x5, 0x4),
41 VISCONTI_PLL_RATE(35750000, 0x1, 0x1, 0x1, 0x32, 0x0ccccc, 0x7, 0x4),
42 { /* sentinel */ },
43};
44
45static const struct visconti_pll_rate_table piimgerpll_rates[] __initconst = {
46 VISCONTI_PLL_RATE(165000000, 0x1, 0x0, 0x1, 0x42, 0x000000, 0x4, 0x2),
47 VISCONTI_PLL_RATE(96000000, 0x1, 0x0, 0x1, 0x30, 0x000000, 0x5, 0x2),
48 VISCONTI_PLL_RATE(54000000, 0x1, 0x0, 0x1, 0x36, 0x000000, 0x5, 0x4),
49 VISCONTI_PLL_RATE(48000000, 0x1, 0x0, 0x1, 0x30, 0x000000, 0x5, 0x4),
50 { /* sentinel */ },
51};
52
53static const struct visconti_pll_info pll_info[] __initconst = {
54 { TMPV770X_PLL_PIPLL0, "pipll0", "osc2-clk", 0x0, pipll0_rates },
55 { TMPV770X_PLL_PIDDRCPLL, "piddrcpll", "osc2-clk", 0x500, piddrcpll_rates },
56 { TMPV770X_PLL_PIVOIFPLL, "pivoifpll", "osc2-clk", 0x600, pivoifpll_rates },
57 { TMPV770X_PLL_PIIMGERPLL, "piimgerpll", "osc2-clk", 0x700, piimgerpll_rates },
58};
59
60static void __init tmpv770x_setup_plls(struct device_node *np)
61{
62 struct visconti_pll_provider *ctx;
63 void __iomem *reg_base;
64
65 reg_base = of_iomap(node: np, index: 0);
66 if (!reg_base)
67 return;
68
69 ctx = visconti_init_pll(np, base: reg_base, TMPV770X_NR_PLL);
70 if (IS_ERR(ptr: ctx)) {
71 iounmap(addr: reg_base);
72 return;
73 }
74
75 ctx->clk_data.hws[TMPV770X_PLL_PIPLL1] =
76 clk_hw_register_fixed_rate(NULL, "pipll1", NULL, 0, 600000000);
77 ctx->clk_data.hws[TMPV770X_PLL_PIDNNPLL] =
78 clk_hw_register_fixed_rate(NULL, "pidnnpll", NULL, 0, 500000000);
79 ctx->clk_data.hws[TMPV770X_PLL_PIETHERPLL] =
80 clk_hw_register_fixed_rate(NULL, "pietherpll", NULL, 0, 500000000);
81
82 visconti_register_plls(ctx, list: pll_info, ARRAY_SIZE(pll_info), lock: &tmpv770x_pll_lock);
83}
84
85CLK_OF_DECLARE(tmpv770x_plls, "toshiba,tmpv7708-pipllct", tmpv770x_setup_plls);
86

source code of linux/drivers/clk/visconti/pll-tmpv770x.c