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| author | Thomas Abraham <thomas.ab@samsung.com> | 2010-05-17 00:38:44 (GMT) |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2010-05-17 01:37:36 (GMT) |
| commit | 664f5b2065da188821fe5aa998c6351e8c042d98 (patch) | |
| tree | 4284522929822a0c7bcc9dc13b9c8fdd466518cd /arch/arm | |
| parent | 6ed91a202b3843d2fec51f00c31e65313ca00906 (diff) | |
| download | linux-664f5b2065da188821fe5aa998c6351e8c042d98.tar.xz | |
ARM: S5PV210: Fix clk_get_rate issue with the clk_h100 clock
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>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-s5pv210/clock.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/arch/arm/mach-s5pv210/clock.c b/arch/arm/mach-s5pv210/clock.c index 4791642..527c9c4 100644 --- a/arch/arm/mach-s5pv210/clock.c +++ b/arch/arm/mach-s5pv210/clock.c @@ -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, |