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linux/arch/arm/mach-shmobile/clock-r8a7778.c
Olof Johansson 82711e7b46 Renesas SoC Clock Cleanups for v3.16 
Work from Laurent Pinchart to switch all Renesas platforms to the new style
 CMT, MTU2 and TMU device platform data. This is in preparation for
 initialising these devices using DT on ARM Based Renesas SoCs.
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Merge tag 'renesas-clock-cleanup2-for-v3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/boards

Merge "Renesas SoC Clock Cleanups for v3.16" from Simon Horman:

Work from Laurent Pinchart to switch all Renesas platforms to the new style
CMT, MTU2 and TMU device platform data. This is in preparation for
initialising these devices using DT on ARM Based Renesas SoCs.

* tag 'renesas-clock-cleanup2-for-v3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: r7s72100: Switch to new style MTU2 device
  sh: Switch to new style MTU2 device
  ARM: shmobile: r8a7779: Switch to new style TMU device
  ARM: shmobile: r8a7778: Switch to new style TMU device
  ARM: shmobile: r8a7740: Switch to new style TMU device
  ARM: shmobile: sh73a0: Switch to new style TMU device
  ARM: shmobile: sh7372: Switch to new style TMU device
  sh: Switch to new style TMU device
  ARM: shmobile: r8a7791: Switch to new style CMT device
  ARM: shmobile: r8a7790: Switch to new style CMT device
  ARM: shmobile: r8a7740: Switch to new style CMT device
  ARM: shmobile: r8a73a4: Switch to new style CMT device
  ARM: shmobile: sh73a0: Switch to new style CMT device
  ARM: shmobile: sh7372: Switch to new style CMT device
  sh: Switch to new style CMT device

Signed-off-by: Olof Johansson <olof@lixom.net>
2014-05-21 14:05:58 -07:00

339 lines
13 KiB
C
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/*
* r8a7778 clock framework support
*
* Copyright (C) 2013 Renesas Solutions Corp.
* Copyright (C) 2013 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* based on r8a7779
*
* Copyright (C) 2011 Renesas Solutions Corp.
* Copyright (C) 2011 Magnus Damm
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* MD MD MD MD PLLA PLLB EXTAL clki clkz
* 19 18 12 11 (HMz) (MHz) (MHz)
*----------------------------------------------------------------------------
* 1 0 0 0 x21 x21 38.00 800 800
* 1 0 0 1 x24 x24 33.33 800 800
* 1 0 1 0 x28 x28 28.50 800 800
* 1 0 1 1 x32 x32 25.00 800 800
* 1 1 0 1 x24 x21 33.33 800 700
* 1 1 1 0 x28 x21 28.50 800 600
* 1 1 1 1 x32 x24 25.00 800 600
*/
#include <linux/io.h>
#include <linux/sh_clk.h>
#include <linux/clkdev.h>
#include <mach/clock.h>
#include <mach/common.h>
#define MSTPCR0 IOMEM(0xffc80030)
#define MSTPCR1 IOMEM(0xffc80034)
#define MSTPCR3 IOMEM(0xffc8003c)
#define MSTPSR1 IOMEM(0xffc80044)
#define MSTPSR4 IOMEM(0xffc80048)
#define MSTPSR6 IOMEM(0xffc8004c)
#define MSTPCR4 IOMEM(0xffc80050)
#define MSTPCR5 IOMEM(0xffc80054)
#define MSTPCR6 IOMEM(0xffc80058)
#define MODEMR 0xFFCC0020
#define MD(nr) BIT(nr)
/* ioremap() through clock mapping mandatory to avoid
* collision with ARM coherent DMA virtual memory range.
*/
static struct clk_mapping cpg_mapping = {
.phys = 0xffc80000,
.len = 0x80,
};
static struct clk extal_clk = {
/* .rate will be updated on r8a7778_clock_init() */
.mapping = &cpg_mapping,
};
static struct clk audio_clk_a = {
};
static struct clk audio_clk_b = {
};
static struct clk audio_clk_c = {
};
/*
* clock ratio of these clock will be updated
* on r8a7778_clock_init()
*/
SH_FIXED_RATIO_CLK_SET(plla_clk, extal_clk, 1, 1);
SH_FIXED_RATIO_CLK_SET(pllb_clk, extal_clk, 1, 1);
SH_FIXED_RATIO_CLK_SET(i_clk, plla_clk, 1, 1);
SH_FIXED_RATIO_CLK_SET(s_clk, plla_clk, 1, 1);
SH_FIXED_RATIO_CLK_SET(s1_clk, plla_clk, 1, 1);
SH_FIXED_RATIO_CLK_SET(s3_clk, plla_clk, 1, 1);
SH_FIXED_RATIO_CLK_SET(s4_clk, plla_clk, 1, 1);
SH_FIXED_RATIO_CLK_SET(b_clk, plla_clk, 1, 1);
SH_FIXED_RATIO_CLK_SET(out_clk, plla_clk, 1, 1);
SH_FIXED_RATIO_CLK_SET(p_clk, plla_clk, 1, 1);
SH_FIXED_RATIO_CLK_SET(g_clk, plla_clk, 1, 1);
SH_FIXED_RATIO_CLK_SET(z_clk, pllb_clk, 1, 1);
static struct clk *main_clks[] = {
&extal_clk,
&plla_clk,
&pllb_clk,
&i_clk,
&s_clk,
&s1_clk,
&s3_clk,
&s4_clk,
&b_clk,
&out_clk,
&p_clk,
&g_clk,
&z_clk,
&audio_clk_a,
&audio_clk_b,
&audio_clk_c,
};
enum {
MSTP531, MSTP530,
MSTP529, MSTP528, MSTP527, MSTP526, MSTP525, MSTP524, MSTP523,
MSTP331,
MSTP323, MSTP322, MSTP321,
MSTP311, MSTP310,
MSTP309, MSTP308, MSTP307,
MSTP114,
MSTP110, MSTP109,
MSTP100,
MSTP030,
MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021,
MSTP016, MSTP015, MSTP012, MSTP011, MSTP010,
MSTP009, MSTP008, MSTP007,
MSTP_NR };
static struct clk mstp_clks[MSTP_NR] = {
[MSTP531] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 31, 0), /* SCU0 */
[MSTP530] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 30, 0), /* SCU1 */
[MSTP529] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 29, 0), /* SCU2 */
[MSTP528] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 28, 0), /* SCU3 */
[MSTP527] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 27, 0), /* SCU4 */
[MSTP526] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 26, 0), /* SCU5 */
[MSTP525] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 25, 0), /* SCU6 */
[MSTP524] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 24, 0), /* SCU7 */
[MSTP523] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 23, 0), /* SCU8 */
[MSTP331] = SH_CLK_MSTP32(&s4_clk, MSTPCR3, 31, 0), /* MMC */
[MSTP323] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 23, 0), /* SDHI0 */
[MSTP322] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 22, 0), /* SDHI1 */
[MSTP321] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 21, 0), /* SDHI2 */
[MSTP311] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 11, 0), /* SSI4 */
[MSTP310] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 10, 0), /* SSI5 */
[MSTP309] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 9, 0), /* SSI6 */
[MSTP308] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 8, 0), /* SSI7 */
[MSTP307] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 7, 0), /* SSI8 */
[MSTP114] = SH_CLK_MSTP32(&p_clk, MSTPCR1, 14, 0), /* Ether */
[MSTP110] = SH_CLK_MSTP32(&s_clk, MSTPCR1, 10, 0), /* VIN0 */
[MSTP109] = SH_CLK_MSTP32(&s_clk, MSTPCR1, 9, 0), /* VIN1 */
[MSTP100] = SH_CLK_MSTP32(&p_clk, MSTPCR1, 0, 0), /* USB0/1 */
[MSTP030] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 30, 0), /* I2C0 */
[MSTP029] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 29, 0), /* I2C1 */
[MSTP028] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 28, 0), /* I2C2 */
[MSTP027] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 27, 0), /* I2C3 */
[MSTP026] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 26, 0), /* SCIF0 */
[MSTP025] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 25, 0), /* SCIF1 */
[MSTP024] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 24, 0), /* SCIF2 */
[MSTP023] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 23, 0), /* SCIF3 */
[MSTP022] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 22, 0), /* SCIF4 */
[MSTP021] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 21, 0), /* SCIF5 */
[MSTP016] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 16, 0), /* TMU0 */
[MSTP015] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 15, 0), /* TMU1 */
[MSTP012] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 12, 0), /* SSI0 */
[MSTP011] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 11, 0), /* SSI1 */
[MSTP010] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 10, 0), /* SSI2 */
[MSTP009] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 9, 0), /* SSI3 */
[MSTP008] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 8, 0), /* SRU */
[MSTP007] = SH_CLK_MSTP32(&s_clk, MSTPCR0, 7, 0), /* HSPI */
};
static struct clk_lookup lookups[] = {
/* main */
CLKDEV_CON_ID("shyway_clk", &s_clk),
CLKDEV_CON_ID("peripheral_clk", &p_clk),
/* MSTP32 clocks */
CLKDEV_DEV_ID("sh_mmcif", &mstp_clks[MSTP331]), /* MMC */
CLKDEV_DEV_ID("ffe4e000.mmc", &mstp_clks[MSTP331]), /* MMC */
CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP323]), /* SDHI0 */
CLKDEV_DEV_ID("ffe4c000.sd", &mstp_clks[MSTP323]), /* SDHI0 */
CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP322]), /* SDHI1 */
CLKDEV_DEV_ID("ffe4d000.sd", &mstp_clks[MSTP322]), /* SDHI1 */
CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP321]), /* SDHI2 */
CLKDEV_DEV_ID("ffe4f000.sd", &mstp_clks[MSTP321]), /* SDHI2 */
CLKDEV_DEV_ID("r8a777x-ether", &mstp_clks[MSTP114]), /* Ether */
CLKDEV_DEV_ID("r8a7778-vin.0", &mstp_clks[MSTP110]), /* VIN0 */
CLKDEV_DEV_ID("r8a7778-vin.1", &mstp_clks[MSTP109]), /* VIN1 */
CLKDEV_DEV_ID("ehci-platform", &mstp_clks[MSTP100]), /* USB EHCI port0/1 */
CLKDEV_DEV_ID("ohci-platform", &mstp_clks[MSTP100]), /* USB OHCI port0/1 */
CLKDEV_DEV_ID("renesas_usbhs", &mstp_clks[MSTP100]), /* USB FUNC */
CLKDEV_DEV_ID("i2c-rcar.0", &mstp_clks[MSTP030]), /* I2C0 */
CLKDEV_DEV_ID("ffc70000.i2c", &mstp_clks[MSTP030]), /* I2C0 */
CLKDEV_DEV_ID("i2c-rcar.1", &mstp_clks[MSTP029]), /* I2C1 */
CLKDEV_DEV_ID("ffc71000.i2c", &mstp_clks[MSTP029]), /* I2C1 */
CLKDEV_DEV_ID("i2c-rcar.2", &mstp_clks[MSTP028]), /* I2C2 */
CLKDEV_DEV_ID("ffc72000.i2c", &mstp_clks[MSTP028]), /* I2C2 */
CLKDEV_DEV_ID("i2c-rcar.3", &mstp_clks[MSTP027]), /* I2C3 */
CLKDEV_DEV_ID("ffc73000.i2c", &mstp_clks[MSTP027]), /* I2C3 */
CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP026]), /* SCIF0 */
CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP025]), /* SCIF1 */
CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP024]), /* SCIF2 */
CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP023]), /* SCIF3 */
CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP022]), /* SCIF4 */
CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP021]), /* SCIF6 */
CLKDEV_DEV_ID("sh-hspi.0", &mstp_clks[MSTP007]), /* HSPI0 */
CLKDEV_DEV_ID("fffc7000.spi", &mstp_clks[MSTP007]), /* HSPI0 */
CLKDEV_DEV_ID("sh-hspi.1", &mstp_clks[MSTP007]), /* HSPI1 */
CLKDEV_DEV_ID("fffc8000.spi", &mstp_clks[MSTP007]), /* HSPI1 */
CLKDEV_DEV_ID("sh-hspi.2", &mstp_clks[MSTP007]), /* HSPI2 */
CLKDEV_DEV_ID("fffc6000.spi", &mstp_clks[MSTP007]), /* HSPI2 */
CLKDEV_DEV_ID("rcar_sound", &mstp_clks[MSTP008]), /* SRU */
CLKDEV_ICK_ID("clk_a", "rcar_sound", &audio_clk_a),
CLKDEV_ICK_ID("clk_b", "rcar_sound", &audio_clk_b),
CLKDEV_ICK_ID("clk_c", "rcar_sound", &audio_clk_c),
CLKDEV_ICK_ID("clk_i", "rcar_sound", &s1_clk),
CLKDEV_ICK_ID("ssi.0", "rcar_sound", &mstp_clks[MSTP012]),
CLKDEV_ICK_ID("ssi.1", "rcar_sound", &mstp_clks[MSTP011]),
CLKDEV_ICK_ID("ssi.2", "rcar_sound", &mstp_clks[MSTP010]),
CLKDEV_ICK_ID("ssi.3", "rcar_sound", &mstp_clks[MSTP009]),
CLKDEV_ICK_ID("ssi.4", "rcar_sound", &mstp_clks[MSTP311]),
CLKDEV_ICK_ID("ssi.5", "rcar_sound", &mstp_clks[MSTP310]),
CLKDEV_ICK_ID("ssi.6", "rcar_sound", &mstp_clks[MSTP309]),
CLKDEV_ICK_ID("ssi.7", "rcar_sound", &mstp_clks[MSTP308]),
CLKDEV_ICK_ID("ssi.8", "rcar_sound", &mstp_clks[MSTP307]),
CLKDEV_ICK_ID("src.0", "rcar_sound", &mstp_clks[MSTP531]),
CLKDEV_ICK_ID("src.1", "rcar_sound", &mstp_clks[MSTP530]),
CLKDEV_ICK_ID("src.2", "rcar_sound", &mstp_clks[MSTP529]),
CLKDEV_ICK_ID("src.3", "rcar_sound", &mstp_clks[MSTP528]),
CLKDEV_ICK_ID("src.4", "rcar_sound", &mstp_clks[MSTP527]),
CLKDEV_ICK_ID("src.5", "rcar_sound", &mstp_clks[MSTP526]),
CLKDEV_ICK_ID("src.6", "rcar_sound", &mstp_clks[MSTP525]),
CLKDEV_ICK_ID("src.7", "rcar_sound", &mstp_clks[MSTP524]),
CLKDEV_ICK_ID("src.8", "rcar_sound", &mstp_clks[MSTP523]),
CLKDEV_ICK_ID("fck", "sh-tmu.0", &mstp_clks[MSTP016]),
CLKDEV_ICK_ID("fck", "sh-tmu.1", &mstp_clks[MSTP015]),
};
void __init r8a7778_clock_init(void)
{
void __iomem *modemr = ioremap_nocache(MODEMR, PAGE_SIZE);
u32 mode;
int k, ret = 0;
BUG_ON(!modemr);
mode = ioread32(modemr);
iounmap(modemr);
switch (mode & (MD(19) | MD(18) | MD(12) | MD(11))) {
case MD(19):
extal_clk.rate = 38000000;
SH_CLK_SET_RATIO(&plla_clk_ratio, 21, 1);
SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1);
break;
case MD(19) | MD(11):
extal_clk.rate = 33333333;
SH_CLK_SET_RATIO(&plla_clk_ratio, 24, 1);
SH_CLK_SET_RATIO(&pllb_clk_ratio, 24, 1);
break;
case MD(19) | MD(12):
extal_clk.rate = 28500000;
SH_CLK_SET_RATIO(&plla_clk_ratio, 28, 1);
SH_CLK_SET_RATIO(&pllb_clk_ratio, 28, 1);
break;
case MD(19) | MD(12) | MD(11):
extal_clk.rate = 25000000;
SH_CLK_SET_RATIO(&plla_clk_ratio, 32, 1);
SH_CLK_SET_RATIO(&pllb_clk_ratio, 32, 1);
break;
case MD(19) | MD(18) | MD(11):
extal_clk.rate = 33333333;
SH_CLK_SET_RATIO(&plla_clk_ratio, 24, 1);
SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1);
break;
case MD(19) | MD(18) | MD(12):
extal_clk.rate = 28500000;
SH_CLK_SET_RATIO(&plla_clk_ratio, 28, 1);
SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1);
break;
case MD(19) | MD(18) | MD(12) | MD(11):
extal_clk.rate = 25000000;
SH_CLK_SET_RATIO(&plla_clk_ratio, 32, 1);
SH_CLK_SET_RATIO(&pllb_clk_ratio, 24, 1);
break;
default:
BUG();
}
if (mode & MD(1)) {
SH_CLK_SET_RATIO(&i_clk_ratio, 1, 1);
SH_CLK_SET_RATIO(&s_clk_ratio, 1, 3);
SH_CLK_SET_RATIO(&s1_clk_ratio, 1, 6);
SH_CLK_SET_RATIO(&s3_clk_ratio, 1, 4);
SH_CLK_SET_RATIO(&s4_clk_ratio, 1, 8);
SH_CLK_SET_RATIO(&p_clk_ratio, 1, 12);
SH_CLK_SET_RATIO(&g_clk_ratio, 1, 12);
if (mode & MD(2)) {
SH_CLK_SET_RATIO(&b_clk_ratio, 1, 18);
SH_CLK_SET_RATIO(&out_clk_ratio, 1, 18);
} else {
SH_CLK_SET_RATIO(&b_clk_ratio, 1, 12);
SH_CLK_SET_RATIO(&out_clk_ratio, 1, 12);
}
} else {
SH_CLK_SET_RATIO(&i_clk_ratio, 1, 1);
SH_CLK_SET_RATIO(&s_clk_ratio, 1, 4);
SH_CLK_SET_RATIO(&s1_clk_ratio, 1, 8);
SH_CLK_SET_RATIO(&s3_clk_ratio, 1, 4);
SH_CLK_SET_RATIO(&s4_clk_ratio, 1, 8);
SH_CLK_SET_RATIO(&p_clk_ratio, 1, 16);
SH_CLK_SET_RATIO(&g_clk_ratio, 1, 12);
if (mode & MD(2)) {
SH_CLK_SET_RATIO(&b_clk_ratio, 1, 16);
SH_CLK_SET_RATIO(&out_clk_ratio, 1, 16);
} else {
SH_CLK_SET_RATIO(&b_clk_ratio, 1, 12);
SH_CLK_SET_RATIO(&out_clk_ratio, 1, 12);
}
}
for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
ret = clk_register(main_clks[k]);
if (!ret)
ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
clkdev_add_table(lookups, ARRAY_SIZE(lookups));
if (!ret)
shmobile_clk_init();
else
panic("failed to setup r8a7778 clocks\n");
}
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