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ARM: shmobile: sh7372: use fixed ratio clock

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Current clock-sh7372 is using own implement
for each divX clocks.
This patch switches to use fixed ratio clock,
and was tesed on mackerel board.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Kuninori Morimoto 2013-03-27 00:55:54 -07:00 committed by Simon Horman
parent f5942c7621
commit 99fb32b88b
1 changed files with 7 additions and 37 deletions
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44
arch/arm/mach-shmobile/clock-sh7372.c
View file

@ -21,6 +21,7 @@
#include <linux/io.h>
#include <linux/sh_clk.h>
#include <linux/clkdev.h>
#include <mach/clock.h>
#include <mach/common.h>
/* SH7372 registers */
@ -83,39 +84,12 @@ struct clk sh7372_extal2_clk = {
.rate = 48000000,
};
/* A fixed divide-by-2 block */
static unsigned long div2_recalc(struct clk *clk)
{
return clk->parent->rate / 2;
}
SH_CLK_RATIO(div2, 1, 2);
static struct sh_clk_ops div2_clk_ops = {
.recalc = div2_recalc,
};
/* Divide dv_clki by two */
struct clk sh7372_dv_clki_div2_clk = {
.ops = &div2_clk_ops,
.parent = &sh7372_dv_clki_clk,
};
/* Divide extal1 by two */
static struct clk extal1_div2_clk = {
.ops = &div2_clk_ops,
.parent = &sh7372_extal1_clk,
};
/* Divide extal2 by two */
static struct clk extal2_div2_clk = {
.ops = &div2_clk_ops,
.parent = &sh7372_extal2_clk,
};
/* Divide extal2 by four */
static struct clk extal2_div4_clk = {
.ops = &div2_clk_ops,
.parent = &extal2_div2_clk,
};
SH_FIXED_RATIO_CLKg(sh7372_dv_clki_div2_clk, sh7372_dv_clki_clk, div2);
SH_FIXED_RATIO_CLK(extal1_div2_clk, sh7372_extal1_clk, div2);
SH_FIXED_RATIO_CLK(extal2_div2_clk, sh7372_extal2_clk, div2);
SH_FIXED_RATIO_CLK(extal2_div4_clk, extal2_div2_clk, div2);
/* PLLC0 and PLLC1 */
static unsigned long pllc01_recalc(struct clk *clk)
@ -147,10 +121,7 @@ static struct clk pllc1_clk = {
};
/* Divide PLLC1 by two */
static struct clk pllc1_div2_clk = {
.ops = &div2_clk_ops,
.parent = &pllc1_clk,
};
SH_FIXED_RATIO_CLK(pllc1_div2_clk, pllc1_clk, div2);
/* PLLC2 */
@ -650,5 +621,4 @@ void __init sh7372_clock_init(void)
shmobile_clk_init();
else
panic("failed to setup sh7372 clocks\n");
}