// SPDX-License-Identifier: GPL-2.0
/*
* arch/sh/kernel/cpu/sh4a/clock-sh7786.c
*
* SH7786 support for the clock framework
*
* Copyright (C) 2010 Paul Mundt
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/clkdev.h>
#include <asm /clock.h>
#include <asm /freq.h>
/*
* Default rate for the root input clock, reset this with clk_set_rate()
* from the platform code.
*/
static struct clk extal_clk = {
.rate = 33333333,
};
static unsigned long pll_recalc(struct clk *clk)
{
int multiplier;
/*
* Clock modes 0, 1, and 2 use an x64 multiplier against PLL1,
* while modes 3, 4, and 5 use an x32.
*/
multiplier = (sh_mv.mv_mode_pins() & 0xf) < 3 ? 64 : 32;
return clk->parent->rate * multiplier;
}
static struct sh_clk_ops pll_clk_ops = {
.recalc = pll_recalc,
};
static struct clk pll_clk = {
.ops = &pll_clk_ops,
.parent = &extal_clk,
.flags = CLK_ENABLE_ON_INIT,
};
static struct clk *clks[] = {
&extal_clk,
&pll_clk,
};
static unsigned int div2[] = { 1, 2, 4, 6, 8, 12, 16, 18,
24, 32, 36, 48 };
static struct clk_div_mult_table div4_div_mult_table = {
.divisors = div2,
.nr_divisors = ARRAY_SIZE(div2),
};
static struct clk_div4_table div4_table = {
.div_mult_table = &div4_div_mult_table,
};
enum { DIV4_I, DIV4_SH, DIV4_B, DIV4_DDR, DIV4_DU, DIV4_P, DIV4_NR };
#define DIV4(_bit, _mask, _flags) \
SH_CLK_DIV4(&pll_clk, FRQMR1, _bit, _mask, _flags)
struct clk div4_clks[DIV4_NR] = {
[DIV4_P] = DIV4(0, 0x0b40, 0),
[DIV4_DU] = DIV4(4, 0x0010, 0),
[DIV4_DDR] = DIV4(12, 0x0002, CLK_ENABLE_ON_INIT),
[DIV4_B] = DIV4(16, 0x0360, CLK_ENABLE_ON_INIT),
[DIV4_SH] = DIV4(20, 0x0002, CLK_ENABLE_ON_INIT),
[DIV4_I] = DIV4(28, 0x0006, CLK_ENABLE_ON_INIT),
};
#define MSTPCR0 0xffc40030
#define MSTPCR1 0xffc40034
enum { MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024,
MSTP023, MSTP022, MSTP021, MSTP020, MSTP017, MSTP016,
MSTP015, MSTP014, MSTP011, MSTP010, MSTP009, MSTP008,
MSTP005, MSTP004, MSTP002,
MSTP112, MSTP110, MSTP109, MSTP108,
MSTP105, MSTP104, MSTP103, MSTP102,
MSTP_NR };
static struct clk mstp_clks[MSTP_NR] = {
/* MSTPCR0 */
[MSTP029] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 29, 0),
[MSTP028] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 28, 0),
[MSTP027] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 27, 0),
[MSTP026] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 26, 0),
[MSTP025] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 25, 0),
[MSTP024] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 24, 0),
[MSTP023] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 23, 0),
[MSTP022] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 22, 0),
[MSTP021] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 21, 0),
[MSTP020] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 20, 0),
[MSTP017] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 17, 0),
[MSTP016] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 16, 0),
[MSTP015] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 15, 0),
[MSTP014] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 14, 0),
[MSTP011] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 11, 0),
[MSTP010] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 10, 0),
[MSTP009] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 9, 0),
[MSTP008] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 8, 0),
[MSTP005] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 5, 0),
[MSTP004] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 4, 0),
[MSTP002] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 2, 0),
/* MSTPCR1 */
[MSTP112] = SH_CLK_MSTP32(NULL, MSTPCR1, 12, 0),
[MSTP110] = SH_CLK_MSTP32(NULL, MSTPCR1, 10, 0),
[MSTP109] = SH_CLK_MSTP32(NULL, MSTPCR1, 9, 0),
[MSTP108] = SH_CLK_MSTP32(NULL, MSTPCR1, 8, 0),
[MSTP105] = SH_CLK_MSTP32(NULL, MSTPCR1, 5, 0),
[MSTP104] = SH_CLK_MSTP32(NULL, MSTPCR1, 4, 0),
[MSTP103] = SH_CLK_MSTP32(NULL, MSTPCR1, 3, 0),
[MSTP102] = SH_CLK_MSTP32(NULL, MSTPCR1, 2, 0),
};
static struct clk_lookup lookups[] = {
/* main clocks */
CLKDEV_CON_ID("extal" , &extal_clk),
CLKDEV_CON_ID("pll_clk" , &pll_clk),
/* DIV4 clocks */
CLKDEV_CON_ID("peripheral_clk" , &div4_clks[DIV4_P]),
CLKDEV_CON_ID("du_clk" , &div4_clks[DIV4_DU]),
CLKDEV_CON_ID("ddr_clk" , &div4_clks[DIV4_DDR]),
CLKDEV_CON_ID("bus_clk" , &div4_clks[DIV4_B]),
CLKDEV_CON_ID("shyway_clk" , &div4_clks[DIV4_SH]),
CLKDEV_CON_ID("cpu_clk" , &div4_clks[DIV4_I]),
/* MSTP32 clocks */
CLKDEV_ICK_ID("fck" , "sh-sci.5" , &mstp_clks[MSTP029]),
CLKDEV_ICK_ID("fck" , "sh-sci.4" , &mstp_clks[MSTP028]),
CLKDEV_ICK_ID("fck" , "sh-sci.3" , &mstp_clks[MSTP027]),
CLKDEV_ICK_ID("fck" , "sh-sci.2" , &mstp_clks[MSTP026]),
CLKDEV_ICK_ID("fck" , "sh-sci.1" , &mstp_clks[MSTP025]),
CLKDEV_ICK_ID("fck" , "sh-sci.0" , &mstp_clks[MSTP024]),
CLKDEV_CON_ID("ssi3_fck" , &mstp_clks[MSTP023]),
CLKDEV_CON_ID("ssi2_fck" , &mstp_clks[MSTP022]),
CLKDEV_CON_ID("ssi1_fck" , &mstp_clks[MSTP021]),
CLKDEV_CON_ID("ssi0_fck" , &mstp_clks[MSTP020]),
CLKDEV_CON_ID("hac1_fck" , &mstp_clks[MSTP017]),
CLKDEV_CON_ID("hac0_fck" , &mstp_clks[MSTP016]),
CLKDEV_CON_ID("i2c1_fck" , &mstp_clks[MSTP015]),
CLKDEV_CON_ID("i2c0_fck" , &mstp_clks[MSTP014]),
CLKDEV_ICK_ID("fck" , "sh-tmu.0" , &mstp_clks[MSTP008]),
CLKDEV_ICK_ID("fck" , "sh-tmu.1" , &mstp_clks[MSTP009]),
CLKDEV_ICK_ID("fck" , "sh-tmu.2" , &mstp_clks[MSTP010]),
CLKDEV_ICK_ID("fck" , "sh-tmu.3" , &mstp_clks[MSTP011]),
CLKDEV_CON_ID("sdif1_fck" , &mstp_clks[MSTP005]),
CLKDEV_CON_ID("sdif0_fck" , &mstp_clks[MSTP004]),
CLKDEV_CON_ID("hspi_fck" , &mstp_clks[MSTP002]),
CLKDEV_CON_ID("usb_fck" , &mstp_clks[MSTP112]),
CLKDEV_CON_ID("pcie2_fck" , &mstp_clks[MSTP110]),
CLKDEV_CON_ID("pcie1_fck" , &mstp_clks[MSTP109]),
CLKDEV_CON_ID("pcie0_fck" , &mstp_clks[MSTP108]),
CLKDEV_CON_ID("dmac_11_6_fck" , &mstp_clks[MSTP105]),
CLKDEV_CON_ID("dmac_5_0_fck" , &mstp_clks[MSTP104]),
CLKDEV_CON_ID("du_fck" , &mstp_clks[MSTP103]),
CLKDEV_CON_ID("ether_fck" , &mstp_clks[MSTP102]),
};
int __init arch_clk_init(void )
{
int i, ret = 0;
for (i = 0; i < ARRAY_SIZE(clks); i++)
ret |= clk_register(clks[i]);
clkdev_add_table(lookups, ARRAY_SIZE(lookups));
if (!ret)
ret = sh_clk_div4_register(div4_clks, ARRAY_SIZE(div4_clks),
&div4_table);
if (!ret)
ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
return ret;
}
Messung V0.5 C=94 H=89 G=91
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