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ARM: shmobile: r8a7740: use fixed ratio clock

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Current clock-r8a7740 is using own implement
for each divX clocks.
This patch switches to use fixed ratio clock,
and was tesed on armadillo 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 00:56:57 -07:00 committed by Simon Horman
parent 5d14ff082b
commit 10d6db2ba2
1 changed files with 9 additions and 45 deletions
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54
arch/arm/mach-shmobile/clock-r8a7740.c
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@ -22,6 +22,7 @@
#include <linux/io.h>
#include <linux/sh_clk.h>
#include <linux/clkdev.h>
#include <mach/clock.h>
#include <mach/common.h>
#include <mach/r8a7740.h>
@ -97,42 +98,13 @@ static struct clk dv_clk = {
.rate = 27000000,
};
static unsigned long div_recalc(struct clk *clk)
{
return clk->parent->rate / (int)(clk->priv);
}
SH_CLK_RATIO(div2, 1, 2);
SH_CLK_RATIO(div1k, 1, 1024);
static struct sh_clk_ops div_clk_ops = {
.recalc = div_recalc,
};
/* extal1 / 2 */
static struct clk extal1_div2_clk = {
.ops = &div_clk_ops,
.priv = (void *)2,
.parent = &extal1_clk,
};
/* extal1 / 1024 */
static struct clk extal1_div1024_clk = {
.ops = &div_clk_ops,
.priv = (void *)1024,
.parent = &extal1_clk,
};
/* extal1 / 2 / 1024 */
static struct clk extal1_div2048_clk = {
.ops = &div_clk_ops,
.priv = (void *)1024,
.parent = &extal1_div2_clk,
};
/* extal2 / 2 */
static struct clk extal2_div2_clk = {
.ops = &div_clk_ops,
.priv = (void *)2,
.parent = &extal2_clk,
};
SH_FIXED_RATIO_CLK(extal1_div2_clk, extal1_clk, div2);
SH_FIXED_RATIO_CLK(extal1_div1024_clk, extal1_clk, div1k);
SH_FIXED_RATIO_CLK(extal1_div2048_clk, extal1_div2_clk, div1k);
SH_FIXED_RATIO_CLK(extal2_div2_clk, extal2_clk, div2);
static struct sh_clk_ops followparent_clk_ops = {
.recalc = followparent_recalc,
@ -143,11 +115,7 @@ static struct clk system_clk = {
.ops = &followparent_clk_ops,
};
static struct clk system_div2_clk = {
.ops = &div_clk_ops,
.priv = (void *)2,
.parent = &system_clk,
};
SH_FIXED_RATIO_CLK(system_div2_clk, system_clk, div2);
/* r_clk */
static struct clk r_clk = {
@ -184,11 +152,7 @@ static struct clk pllc1_clk = {
};
/* PLLC1 / 2 */
static struct clk pllc1_div2_clk = {
.ops = &div_clk_ops,
.priv = (void *)2,
.parent = &pllc1_clk,
};
SH_FIXED_RATIO_CLK(pllc1_div2_clk, pllc1_clk, div2);
/* USB clock */
/*