Alexander Shishkin a écrit :
> Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx> writes:
>
>> This patch makes it possible to set the chipidea udc
>> into full-speed only mode. It can be set by the oftree
>> property "force-full-speed".
>>
>> Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
>> Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
>> ---
>> drivers/usb/chipidea/bits.h | 1 +
>> drivers/usb/chipidea/core.c | 5 +++++
>> include/linux/usb/chipidea.h | 1 +
>> 3 files changed, 7 insertions(+)
>>
>> diff --git a/drivers/usb/chipidea/bits.h b/drivers/usb/chipidea/bits.h
>> index 3cded5f..85b6b09 100644
>> --- a/drivers/usb/chipidea/bits.h
>> +++ b/drivers/usb/chipidea/bits.h
>> @@ -51,6 +51,7 @@
>> #define PORTSC_PTS (BIT(31) | BIT(30))
>> #define PORTSC_PTW BIT(28)
>> #define PORTSC_STS BIT(29)
>> +#define PORTSC_PFSC BIT(24)
>
> Same for this one, it's in DEVLC in my spec.
>
Yes it depends it device support lpm or not.
We have the same problem with hw_port_is_high_speed [1]. Mapping is different
according lpm support for some register.
Matthieu
[1]
drivers/usb/chipidea/udc.c
static int hw_port_is_high_speed(struct ci13xxx *ci)
{
return ci->hw_bank.lpm ? hw_read(ci, OP_DEVLC, DEVLC_PSPD) :
hw_read(ci, OP_PORTSC, PORTSC_HSP);
}
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