diff options
| author | Wenyou Yang <wenyou.yang@atmel.com> | 2016-06-08 12:15:10 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-07 22:19:59 -0700 |
| commit | 7150bc9b4d43471fa37b26f5839892d4cf1fe09b (patch) | |
| tree | f5b75ed7bd53693c71578e8ade5f3ae9511a460e /Documentation | |
| parent | 62c32e4641e7c5f6e0cad72bea0c8645c33d51b6 (diff) | |
usb: ohci-at91: Forcibly suspend ports while USB suspend
In order to the save power consumption, as a workaround, suspend
forcibly the USB PORTA/B/C via set the SUSPEND_A/B/C bits of OHCI
Interrupt Configuration Register in the SFRs while OHCI USB suspend.
This suspend operation must be done before the USB clock is disabled,
resume after the USB clock is enabled.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/atmel-usb.txt | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/usb/atmel-usb.txt b/Documentation/devicetree/bindings/usb/atmel-usb.txt index 5883b73ea1b5..888deaa8a4ca 100644 --- a/Documentation/devicetree/bindings/usb/atmel-usb.txt +++ b/Documentation/devicetree/bindings/usb/atmel-usb.txt @@ -3,8 +3,10 @@ Atmel SOC USB controllers OHCI Required properties: - - compatible: Should be "atmel,at91rm9200-ohci" for USB controllers - used in host mode. + - compatible: Should be one of the following + "atmel,at91rm9200-ohci" for USB controllers used in host mode. + "atmel,sama5d2-ohci" for USB controllers used in host mode + on SAMA5D2 which can force to suspend. - reg: Address and length of the register set for the device - interrupts: Should contain ehci interrupt - clocks: Should reference the peripheral, host and system clocks |