Re: [PATCH 7/9] usb: chipidea: udc: add force-full-speed option

Alexander Shishkin a écrit :

Michael Grzeschik [off-list ref] writes:

quoted

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 <redacted>
Signed-off-by: Marc Kleine-Budde <redacted>
---
 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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