2 * arch/sh/kernel/cpu/sh4a/clock-sh7786.c
4 * SH7786 support for the clock framework
6 * Copyright (C) 2010 Paul Mundt
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/clk.h>
16 #include <linux/clk.h>
17 #include <asm/clkdev.h>
18 #include <asm/clock.h>
22 * Default rate for the root input clock, reset this with clk_set_rate()
23 * from the platform code.
25 static struct clk extal_clk = {
31 static unsigned long pll_recalc(struct clk *clk)
36 * Clock modes 0, 1, and 2 use an x64 multiplier against PLL1,
37 * while modes 3, 4, and 5 use an x32.
39 multiplier = (sh_mv.mv_mode_pins() & 0xf) < 3 ? 64 : 32;
41 return clk->parent->rate * multiplier;
44 static struct clk_ops pll_clk_ops = {
48 static struct clk pll_clk = {
53 .flags = CLK_ENABLE_ON_INIT,
56 static struct clk *clks[] = {
61 static unsigned int div2[] = { 1, 2, 4, 6, 8, 12, 16, 18,
64 static struct clk_div_mult_table div4_div_mult_table = {
66 .nr_divisors = ARRAY_SIZE(div2),
69 static struct clk_div4_table div4_table = {
70 .div_mult_table = &div4_div_mult_table,
73 enum { DIV4_I, DIV4_SH, DIV4_B, DIV4_DDR, DIV4_DU, DIV4_P, DIV4_NR };
75 #define DIV4(_str, _bit, _mask, _flags) \
76 SH_CLK_DIV4(_str, &pll_clk, FRQMR1, _bit, _mask, _flags)
78 struct clk div4_clks[DIV4_NR] = {
79 [DIV4_P] = DIV4("peripheral_clk", 0, 0x0b40, 0),
80 [DIV4_DU] = DIV4("du_clk", 4, 0x0010, 0),
81 [DIV4_DDR] = DIV4("ddr_clk", 12, 0x0002, CLK_ENABLE_ON_INIT),
82 [DIV4_B] = DIV4("bus_clk", 16, 0x0360, CLK_ENABLE_ON_INIT),
83 [DIV4_SH] = DIV4("shyway_clk", 20, 0x0002, CLK_ENABLE_ON_INIT),
84 [DIV4_I] = DIV4("cpu_clk", 28, 0x0006, CLK_ENABLE_ON_INIT),
87 #define MSTPCR0 0xffc40030
88 #define MSTPCR1 0xffc40034
90 enum { MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024,
91 MSTP023, MSTP022, MSTP021, MSTP020, MSTP017, MSTP016,
92 MSTP015, MSTP014, MSTP011, MSTP010, MSTP009, MSTP008,
93 MSTP005, MSTP004, MSTP002,
94 MSTP112, MSTP110, MSTP109, MSTP108,
95 MSTP105, MSTP104, MSTP103, MSTP102,
98 static struct clk mstp_clks[MSTP_NR] = {
100 [MSTP029] = SH_CLK_MSTP32("sci_fck", 5, &div4_clks[DIV4_P], MSTPCR0, 29, 0),
101 [MSTP028] = SH_CLK_MSTP32("sci_fck", 4, &div4_clks[DIV4_P], MSTPCR0, 28, 0),
102 [MSTP027] = SH_CLK_MSTP32("sci_fck", 3, &div4_clks[DIV4_P], MSTPCR0, 27, 0),
103 [MSTP026] = SH_CLK_MSTP32("sci_fck", 2, &div4_clks[DIV4_P], MSTPCR0, 26, 0),
104 [MSTP025] = SH_CLK_MSTP32("sci_fck", 1, &div4_clks[DIV4_P], MSTPCR0, 25, 0),
105 [MSTP024] = SH_CLK_MSTP32("sci_fck", 0, &div4_clks[DIV4_P], MSTPCR0, 24, 0),
106 [MSTP023] = SH_CLK_MSTP32("ssi_fck", 3, &div4_clks[DIV4_P], MSTPCR0, 23, 0),
107 [MSTP022] = SH_CLK_MSTP32("ssi_fck", 2, &div4_clks[DIV4_P], MSTPCR0, 22, 0),
108 [MSTP021] = SH_CLK_MSTP32("ssi_fck", 1, &div4_clks[DIV4_P], MSTPCR0, 21, 0),
109 [MSTP020] = SH_CLK_MSTP32("ssi_fck", 0, &div4_clks[DIV4_P], MSTPCR0, 20, 0),
110 [MSTP017] = SH_CLK_MSTP32("hac_fck", 1, &div4_clks[DIV4_P], MSTPCR0, 17, 0),
111 [MSTP016] = SH_CLK_MSTP32("hac_fck", 0, &div4_clks[DIV4_P], MSTPCR0, 16, 0),
112 [MSTP015] = SH_CLK_MSTP32("i2c_fck", 1, &div4_clks[DIV4_P], MSTPCR0, 15, 0),
113 [MSTP014] = SH_CLK_MSTP32("i2c_fck", 0, &div4_clks[DIV4_P], MSTPCR0, 14, 0),
114 [MSTP011] = SH_CLK_MSTP32("tmu9_11_fck", -1, &div4_clks[DIV4_P], MSTPCR0, 11, 0),
115 [MSTP010] = SH_CLK_MSTP32("tmu678_fck", -1, &div4_clks[DIV4_P], MSTPCR0, 10, 0),
116 [MSTP009] = SH_CLK_MSTP32("tmu345_fck", -1, &div4_clks[DIV4_P], MSTPCR0, 9, 0),
117 [MSTP008] = SH_CLK_MSTP32("tmu012_fck", -1, &div4_clks[DIV4_P], MSTPCR0, 8, 0),
118 [MSTP005] = SH_CLK_MSTP32("sdif_fck", 1, &div4_clks[DIV4_P], MSTPCR0, 5, 0),
119 [MSTP004] = SH_CLK_MSTP32("sdif_fck", 0, &div4_clks[DIV4_P], MSTPCR0, 4, 0),
120 [MSTP002] = SH_CLK_MSTP32("hspi_fck", -1, &div4_clks[DIV4_P], MSTPCR0, 2, 0),
123 [MSTP112] = SH_CLK_MSTP32("usb_fck", -1, NULL, MSTPCR1, 12, 0),
124 [MSTP110] = SH_CLK_MSTP32("pcie_fck", 2, NULL, MSTPCR1, 10, 0),
125 [MSTP109] = SH_CLK_MSTP32("pcie_fck", 1, NULL, MSTPCR1, 9, 0),
126 [MSTP108] = SH_CLK_MSTP32("pcie_fck", 0, NULL, MSTPCR1, 8, 0),
127 [MSTP105] = SH_CLK_MSTP32("dmac_11_6_fck", -1, NULL, MSTPCR1, 5, 0),
128 [MSTP104] = SH_CLK_MSTP32("dmac_5_0_fck", -1, NULL, MSTPCR1, 4, 0),
129 [MSTP103] = SH_CLK_MSTP32("du_fck", -1, NULL, MSTPCR1, 3, 0),
130 [MSTP102] = SH_CLK_MSTP32("ether_fck", -1, NULL, MSTPCR1, 2, 0),
133 static struct clk_lookup lookups[] = {
136 .dev_id = "sh_tmu.0",
138 .clk = &mstp_clks[MSTP008],
141 .dev_id = "sh_tmu.1",
143 .clk = &mstp_clks[MSTP008],
146 .dev_id = "sh_tmu.2",
148 .clk = &mstp_clks[MSTP008],
151 .dev_id = "sh_tmu.3",
153 .clk = &mstp_clks[MSTP009],
156 .dev_id = "sh_tmu.4",
158 .clk = &mstp_clks[MSTP009],
161 .dev_id = "sh_tmu.5",
163 .clk = &mstp_clks[MSTP009],
166 .dev_id = "sh_tmu.6",
168 .clk = &mstp_clks[MSTP010],
171 .dev_id = "sh_tmu.7",
173 .clk = &mstp_clks[MSTP010],
176 .dev_id = "sh_tmu.8",
178 .clk = &mstp_clks[MSTP010],
181 .dev_id = "sh_tmu.9",
183 .clk = &mstp_clks[MSTP011],
186 .dev_id = "sh_tmu.10",
188 .clk = &mstp_clks[MSTP011],
191 .dev_id = "sh_tmu.11",
193 .clk = &mstp_clks[MSTP011],
197 int __init arch_clk_init(void)
201 for (i = 0; i < ARRAY_SIZE(clks); i++)
202 ret |= clk_register(clks[i]);
203 for (i = 0; i < ARRAY_SIZE(lookups); i++)
204 clkdev_add(&lookups[i]);
207 ret = sh_clk_div4_register(div4_clks, ARRAY_SIZE(div4_clks),
210 ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);