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ARM: S5PV210: Fix clk_get_rate issue with the clk_h100 clock

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The clk_h100 clock represents the IMEM clock for the MSYS domain.
This clock rate of this clock is always half of the hclk_msys clock.
There is an issue when getting the clock rate of the clk_h100 clock
(clock get_rate hclk_h100 always returns clock rate that is equal to
the hclk_msys clock rate).

This patch modifies the following.

1. Moves the definition of the clk_h100 clock into the 'init_clocks'
   list with the appropriate parent, ctrlbit, enable and ops fields.

2. The name of the clock is changed from 'clk_h100' to 'hclk_imem'
   to represent more clearly that is represents the IMEM clock in
   the MSYS domain.

3. The function to get the clock rate of the hclk_imem clock is added.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Thomas Abraham 2010-05-17 09:38:44 +09:00 committed by Ben Dooks
parent 6ed91a202b
commit 664f5b2065
1 changed files with 16 additions and 6 deletions
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22
arch/arm/mach-s5pv210/clock.c
View file

@ -155,11 +155,6 @@ static int s5pv210_clk_ip3_ctrl(struct clk *clk, int enable)
return s5p_gatectrl(S5P_CLKGATE_IP3, clk, enable);
}
static struct clk clk_h100 = {
.name = "hclk100",
.id = -1,
};
static struct clk clk_p83 = {
.name = "pclk83",
.id = -1,
@ -171,11 +166,19 @@ static struct clk clk_p66 = {
};
static struct clk *sys_clks[] = {
&clk_h100,
&clk_p83,
&clk_p66
};
static unsigned long s5pv210_clk_imem_get_rate(struct clk *clk)
{
return clk_get_rate(clk->parent) / 2;
}
static struct clk_ops clk_hclk_imem_ops = {
.get_rate = s5pv210_clk_imem_get_rate,
};
static struct clk init_clocks_disable[] = {
{
.name = "rot",
@ -326,6 +329,13 @@ static struct clk init_clocks_disable[] = {
static struct clk init_clocks[] = {
{
.name = "hclk_imem",
.id = -1,
.parent = &clk_hclk_msys.clk,
.ctrlbit = (1 << 5),
.enable = s5pv210_clk_ip0_ctrl,
.ops = &clk_hclk_imem_ops,
}, {
.name = "uart",
.id = 0,
.parent = &clk_p66,