Re: [PATCH v3 1/4] USB: Fix of_usb_get_dr_mode_by_phy with a shared phy block

Hi,

On Sun, Jun 05, 2016 at 04:59:33PM +0200, Hans de Goede wrote:

Some SoCs have a single phy-hw-block with multiple phys, this is
modelled by a single phy dts node, so we end up with multiple
controller nodes with a phys property pointing to the phy-node
of the otg-phy.

Only one of these controllers typically is an otg controller, yet we
were checking the first controller who uses a phy from the block and
then end up looking for a dr_mode property in e.g. the ehci controller.

This commit fixes this by adding an arg0 parameter to
of_usb_get_dr_mode_by_phy and make of_usb_get_dr_mode_by_phy
check that this matches the phandle args[0] value when looking for
the otg controller.

Signed-off-by: Hans de Goede <redacted>
---
Changes in v2:
-Add a args0 parameter instead of looking for nodes with a dr_mode property
Changes in v3:
-No changes
---
 drivers/usb/common/common.c  | 31 ++++++++++++++++++-------------
 drivers/usb/phy/phy-am335x.c |  2 +-
 include/linux/usb/of.h       |  4 ++--
 3 files changed, 21 insertions(+), 16 deletions(-)

This breaks am335x.

[   17.433166] /ocp/usb@47400000/usb@47401000: could not get #phy-cells
for /ocp/usb@47400000/usb-phy@47401300
[   17.443627] /ocp/usb@47400000/usb@47401800: could not get #phy-cells
for /ocp/usb@47400000/usb-phy@47401b00
[   17.454005] am335x-phy-driver 47401300.usb-phy: dr_mode 0
[   17.460518] 47401300.usb-phy supply vcc not found, using dummy
regulator
[   17.469685] /ocp/usb@47400000/usb@47401000: could not get #phy-cells
for /ocp/usb@47400000/usb-phy@47401300
[   17.479998] /ocp/usb@47400000/usb@47401800: could not get #phy-cells
for /ocp/usb@47400000/usb-phy@47401b00
[   17.490342] am335x-phy-driver 47401b00.usb-phy: dr_mode 0

Regards,
-Bin.

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