[PATCH V2 1/4] cpufreq: add arm soc generic cpufreq driver
bryanh at codeaurora.org
Fri Dec 16 14:59:02 EST 2011
On 12/16/2011 02:52 AM, Jamie Iles wrote:
>> +static DEFINE_PER_CPU(unsigned long, l_p_j_ref);
>> +static unsigned long l_p_j_ref_freq;
>> +static struct clk *cpu_clk;
> This assumes that all CPU's share the same clk and run at the same rate.
> Is that a fair/safe assumption? I honestly don't know the answer to
> this so it's just a question!!!
On MSM, cpus independently scale both frequency and voltage. Our clock
driver isn't upstream yet. David Brown has a preliminary version here:
Once we get our driver upstream, MSM will be an exception and not select
ARM_GENERIC_CPUFREQ. We'll probably have a separate msm-cpufreq.c
driver under drivers/cpufreq/.
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
More information about the linux-arm-kernel