Re: [PATCH v5 5/5] powerpc/85xx: add support to JOG feature using cpufreq interface

2012-06-06 Thread Zhao Chenhui
On Tue, Jun 05, 2012 at 10:58:41AM -0500, Scott Wood wrote: On 06/05/2012 05:59 AM, Zhao Chenhui wrote: On Fri, Jun 01, 2012 at 06:30:55PM -0500, Scott Wood wrote: On 05/11/2012 06:53 AM, Zhao Chenhui wrote: The jog mode frequency transition process on the MPC8536 is similar to the deep

Re: [PATCH v5 5/5] powerpc/85xx: add support to JOG feature using cpufreq interface

2012-06-05 Thread Zhao Chenhui
On Fri, Jun 01, 2012 at 06:30:55PM -0500, Scott Wood wrote: On 05/11/2012 06:53 AM, Zhao Chenhui wrote: Some 85xx silicons like MPC8536 and P1022 have a JOG feature, which provides a dynamic mechanism to lower or raise the CPU core clock at runtime. Is there a reason P1023 isn't supported?

Re: [PATCH v5 5/5] powerpc/85xx: add support to JOG feature using cpufreq interface

2012-06-05 Thread Scott Wood
On 06/05/2012 05:59 AM, Zhao Chenhui wrote: On Fri, Jun 01, 2012 at 06:30:55PM -0500, Scott Wood wrote: On 05/11/2012 06:53 AM, Zhao Chenhui wrote: The jog mode frequency transition process on the MPC8536 is similar to the deep sleep process. The driver need save the CPU state and restore it

Re: [PATCH v5 5/5] powerpc/85xx: add support to JOG feature using cpufreq interface

2012-06-01 Thread Scott Wood
On 05/11/2012 06:53 AM, Zhao Chenhui wrote: Some 85xx silicons like MPC8536 and P1022 have a JOG feature, which provides a dynamic mechanism to lower or raise the CPU core clock at runtime. Is there a reason P1023 isn't supported? This patch adds the support to change CPU frequency using the

[PATCH v5 5/5] powerpc/85xx: add support to JOG feature using cpufreq interface

2012-05-11 Thread Zhao Chenhui
Some 85xx silicons like MPC8536 and P1022 have a JOG feature, which provides a dynamic mechanism to lower or raise the CPU core clock at runtime. This patch adds the support to change CPU frequency using the standard cpufreq interface. The ratio CORE to CCB can be 1:1(except MPC8536), 3:2, 2:1,