"Koyamangalath, Abhilash" <abhilash.kv@xxxxxx> writes:
> Kevin Hilman wrote:
>>Abhilash K V <abhilash.kv@xxxxxx> writes:
>>
>> > From: Vaibhav Hiremath <hvaibhav@xxxxxx>
>> >
>> > In case of AM3517 & AM3505, Smart Reflex is not applicable so
>> > we must not enable it. So add check for am3517/05 cpu revision
>> > in omap3_twl_init() and return -ENODEV if true, else continue.
>> >
>> > Signed-off-by: Vaibhav Hiremath <hvaibhav@xxxxxx>
>> > Signed-off-by: Abhilash K V <abhilash.kv@xxxxxx>
>> > ---
>> > arch/arm/mach-omap2/omap_twl.c | 8 ++++++++
>> > 1 files changed, 8 insertions(+), 0 deletions(-)
>> >
>> > diff --git a/arch/arm/mach-omap2/omap_twl.c
>> b/arch/arm/mach-omap2/omap_twl.c
>> > index 07d6140..92fadcb 100644
>> > --- a/arch/arm/mach-omap2/omap_twl.c
>> > +++ b/arch/arm/mach-omap2/omap_twl.c
>> > @@ -269,6 +269,14 @@ int __init omap3_twl_init(void)
>> > if (!cpu_is_omap34xx())
>> > return -ENODEV;
>> >
>> > + /*
>> > + * In case of AM3517/AM3505 we should not be going down
>> > + * further, since SR is not applicable there.
>> > + */
>> > + if (cpu_is_omap3505() || cpu_is_omap3517()) {
>> > + return -ENODEV;
>> > + }
>> > +
>>
>> Rather than using cpu_is_*, you should add a new "feature" flag for
>> SmartReflex. We already have this for things like SGX, IVA, NEON, etc.
>> See <plat/feature.h>
> I did not find a feature.h;
sorry, I meant <plat/cpu.yh>
> did you mean OMAP3_CHECK_FEATURE macro which is used by
> omap3_check_features(), which gleans for presence of L2CACHE, IVA, SGX, NEON, ISP features
> from the Control Device Status Register (0x4800 244C) ?
yes, OMAP3_HAS_FEATURE()
> There is no such bit-field to indicate the presence of smart-reflex feature in this register.
> AFAIK, there is no such global register as well which could indicate this.
There doesn't have to be a register read to indicate this. See for
example the HAS_IO_WAKEUP feature.
Kevin
> - Abhilash
>
>> Kevin
>>
>>
>> > if (cpu_is_omap3630()) {
>> > omap3_mpu_volt_info.vp_vddmin =
>> OMAP3630_VP1_VLIMITTO_VDDMIN;
>> > omap3_mpu_volt_info.vp_vddmax =
>> OMAP3630_VP1_VLIMITTO_VDDMAX;
>>
>>
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