diff options
| author | Ranjani Vaidyanathan <ra5478@freescale.com> | 2011-01-25 14:16:57 -0600 |
|---|---|---|
| committer | Ranjani Vaidyanathan <ra5478@freescale.com> | 2011-01-25 14:59:32 -0600 |
| commit | a9d547c7b51574323784b0f80d383eab62a16769 (patch) | |
| tree | edb448f0cd9620d98e72e679ac494c2237bf9f9e | |
| parent | 75749fa549a99e5bb325d47a94d4ae7a0a9c7e7e (diff) | |
ENGR00138516: MX5X: Initialize CPU working point correctly for DVFS-CORE
CPU working point needs to be initialized based on the current CPU
frequency in start_dvfs() and should correspond with the correct entry
in the cpu_wp_auto table.
If its not initialized correctly, DVFS-CORE will fail when PLL-relock
results in a frequency that is not the same as set in the cpu_wp_auto table.
So fix it by finding the entry that closely matches the CPU frequency.
Signed-off-by: Ranjani Vaidyanathan <ra5478@freescale.com>
| -rw-r--r-- | arch/arm/plat-mxc/dvfs_core.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/arch/arm/plat-mxc/dvfs_core.c b/arch/arm/plat-mxc/dvfs_core.c index 807fa63141ad..8830dce17e5f 100644 --- a/arch/arm/plat-mxc/dvfs_core.c +++ b/arch/arm/plat-mxc/dvfs_core.c @@ -370,12 +370,11 @@ static int start_dvfs(void) /* get current working point */ cpu_rate = clk_get_rate(cpu_clk); - for (curr_wp = 0; curr_wp < cpu_wp_nr; curr_wp++) - if (cpu_rate == cpu_wp_tbl[curr_wp].cpu_rate) + curr_wp = cpu_wp_nr - 1; + do { + if (cpu_rate <= cpu_wp_tbl[curr_wp].cpu_rate) break; - /* if doesn't find it, set it as the lowest point */ - if (curr_wp == cpu_wp_nr) - curr_wp--; + } while (--curr_wp >= 0); old_wp = curr_wp; /* config reg GPC_CNTR */ reg = __raw_readl(gpc_base + dvfs_data->gpc_cntr_offset); |