diff options
| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2014-02-19 13:41:43 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-24 17:07:52 -0800 |
| commit | 4f6743d5ca97ac66831add302cc5467db4ee3809 (patch) | |
| tree | 83fa601c662360f5f52c80421267a271317a509f /drivers/usb/chipidea/core.c | |
| parent | fad56745a641750745d85f59d5cc640a1a4c1719 (diff) | |
| download | blackbird-op-linux-4f6743d5ca97ac66831add302cc5467db4ee3809.tar.gz blackbird-op-linux-4f6743d5ca97ac66831add302cc5467db4ee3809.zip | |
usb: chipidea: udc: add maximum-speed = full-speed option
This patch makes it possible to set the chipidea udc into full-speed only mode.
It is set by the oftree property "maximum-speed = full-speed".
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea/core.c')
| -rw-r--r-- | drivers/usb/chipidea/core.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 47b4bd860b65..65aeaacda6cd 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -64,6 +64,7 @@ #include <linux/usb/otg.h> #include <linux/usb/chipidea.h> #include <linux/usb/of.h> +#include <linux/of.h> #include <linux/phy.h> #include <linux/regulator/consumer.h> @@ -298,6 +299,13 @@ int hw_device_reset(struct ci_hdrc *ci, u32 mode) if (ci->platdata->flags & CI_HDRC_DISABLE_STREAMING) hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS); + if (ci->platdata->flags & CI_HDRC_FORCE_FULLSPEED) { + if (ci->hw_bank.lpm) + hw_write(ci, OP_DEVLC, DEVLC_PFSC, DEVLC_PFSC); + else + hw_write(ci, OP_PORTSC, PORTSC_PFSC, PORTSC_PFSC); + } + /* USBMODE should be configured step by step */ hw_write(ci, OP_USBMODE, USBMODE_CM, USBMODE_CM_IDLE); hw_write(ci, OP_USBMODE, USBMODE_CM, mode); @@ -412,6 +420,9 @@ static int ci_get_platdata(struct device *dev, } } + if (of_usb_get_maximum_speed(dev->of_node) == USB_SPEED_FULL) + platdata->flags |= CI_HDRC_FORCE_FULLSPEED; + return 0; } |
