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| author | Pavel Pisa <ppisa@pikron.com> | 2007-03-07 23:56:16 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-03-12 16:49:35 +0000 |
| commit | b3c6b76ffb1a8c8d1f12e838a25c1a86f5316e2c (patch) | |
| tree | 7e68897d90f93ea62b890128408cfbf2d0b57c86 /arch/arm/mach-imx/cpufreq.c | |
| parent | 83b84c4e8c7cf00e26610f03ee59e9be010f527c (diff) | |
| download | linux-b3c6b76ffb1a8c8d1f12e838a25c1a86f5316e2c.tar.gz linux-b3c6b76ffb1a8c8d1f12e838a25c1a86f5316e2c.tar.bz2 linux-b3c6b76ffb1a8c8d1f12e838a25c1a86f5316e2c.zip | |
[ARM] 4255/1: i.MX/MX1 Correct MPU PLL reference clock value.
Only System PLL clock source is selectable by CSCR_SYSTEM_SEL
bit. MPU PLL is driven by 512*CLK32 for each case.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-imx/cpufreq.c')
| -rw-r--r-- | arch/arm/mach-imx/cpufreq.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm/mach-imx/cpufreq.c b/arch/arm/mach-imx/cpufreq.c index 43525ee504d5..7e70e0b0b989 100644 --- a/arch/arm/mach-imx/cpufreq.c +++ b/arch/arm/mach-imx/cpufreq.c @@ -83,13 +83,13 @@ static void imx_set_mpctl0(u32 mpctl0) * imx_compute_mpctl - compute new PLL parameters * @new_mpctl: pointer to location assigned by new PLL control register value * @cur_mpctl: current PLL control register parameters + * @f_ref: reference source frequency Hz * @freq: required frequency in Hz * @relation: is one of %CPUFREQ_RELATION_L (supremum) * and %CPUFREQ_RELATION_H (infimum) */ -long imx_compute_mpctl(u32 *new_mpctl, u32 cur_mpctl, unsigned long freq, int relation) +long imx_compute_mpctl(u32 *new_mpctl, u32 cur_mpctl, u32 f_ref, unsigned long freq, int relation) { - u32 f_ref = (CSCR & CSCR_SYSTEM_SEL) ? 16000000 : (CLK32 * 512); u32 mfi; u32 mfn; u32 mfd; @@ -204,7 +204,7 @@ static int imx_set_target(struct cpufreq_policy *policy, sysclk = imx_get_system_clk(); if (freq > sysclk / bclk_div_at_boot + 1000000) { - freq = imx_compute_mpctl(&mpctl0, mpctl0_at_boot, freq, relation); + freq = imx_compute_mpctl(&mpctl0, mpctl0_at_boot, CLK32 * 512, freq, relation); if (freq < 0) { printk(KERN_WARNING "imx: target frequency %ld Hz cannot be set\n", freq); return -EINVAL; |