[U-Boot] [PATCH v2 0/4] Migrate Vybrid USB driver to driver model

[maitysanchayan at gmail.com]

Hello,

Ping?

Regards,
Sanchayan.

On 16-08-09 23:44:58, Sanchayan Maity wrote:
> Hello,
> 
> This is the second version of the patchset for migrating Vybrid
> USB driver to driver model.
> 
> Compare to the first version, this version takes care of dr_mode
> property and correctly handles OTG as well when gpio is specified
> for use as ID detection pin. This is an essential requirement for
> OTG as Vybrid USB controller is not a true OTG though it can be
> configured as either host or device. The ID pin which is unique
> for OTG operation is not present on Vybrid.
> 
> The problem with client that I was observing was related to sequence
> numbers. While trying to implement the OTG functionality I observed
> that if during probe of USB0 if it returns ENODEV, the probe of USB1
> provides a sequence number of 0 while we expect 1. The code relies
> on sequence numbers for initialising the appropriate peripherals.
> I use the bind operation to force a sequence number. This also seems
> to solve the problems I was having with USB client and mentioned
> in the previous version of the patchset.
> 
> Host and client functionality are both functional with this patch.
> Patch series is based on top of latest u-boot master at the moment
> of this writing. Tested on Toradex Colibri Vybrid VF61 module.
> 
> Thanks to Lukasz and Stefan for their comments.
> 
> V1 Patches:
> [1].
> https://patchwork.ozlabs.org/patch/655370/
> [2].
> https://patchwork.ozlabs.org/patch/655371/
> [3].
> https://patchwork.ozlabs.org/patch/655372/
> [4].
> https://patchwork.ozlabs.org/patch/655373/
> 
> Sanchayan Maity (4):
>   usb: host: ehci-vf: Migrate Vybrid USB to driver model
>   ARM: dts: vf: Add device tree node for USB on Vybrid
>   ARM: dts: vf-colibri: Enable USB device tree node for Colibri Vybrid
>   configs: colibri_vf_defconfig: Enable USB driver model for Colibri Vybrid
> 
>  arch/arm/dts/vf-colibri.dtsi |  11 +++
>  arch/arm/dts/vf.dtsi         |  14 +++
>  configs/colibri_vf_defconfig |   1 +
>  drivers/usb/host/ehci-vf.c   | 208 +++++++++++++++++++++++++++++++++++++++++--
>  4 files changed, 227 insertions(+), 7 deletions(-)
> 
> -- 
> 2.9.2
>