[PATCH v8 0/3] Support qcom's HSIC USB and rewrite USB2 HS support

[Kishon Vijay Abraham I]

On Thursday 26 January 2017 04:02 AM, Stephen Boyd wrote:
> This patch series continues the usb chipidea rewrite for 
> Qualcommm platforms. I've dropped the patches that were applied
> to Peter's tree for chipidea. Now the phy drivers are left,
> along with the patch to call phy_set_mode() at the right place.
> 
> I've left the HSIC phy driver here, because it wasn't merged in
> the last round. Nothing has changed in that driver, so I believe
> it is ready to be merged now. The chipidea patch is independent and
> can be merged without causing any dependency with the phy tree.

merged the phy patches. Please send a patch updating the MAINTAINERS for the
phy driver.

Thanks
Kishon
> 
> Patches based on v4.10-rc1 + first 22 patches from v5. Full
> branch is here[1].
> 
> Changes from v7:
>  * Dropped set_vbus() callback (Kishon)
>  * Made phy_set_mode() generic and moved into ci_platform_configure() (Peter)
> 
> Changes from v6:
>  * Dropped first 22 applied patches
>  * Rewrote phy_set_mode() patch to be msm specific
>  * New set_vbus() callback in phy framework
>  * Updated HS phy driver for set_vbus() callback
> 
> Changes from v5:
>  * Replaced "Emulate OTGSC interrupt enable path" patch with a patch
>    from Peter
>  * Updated HS phy driver to support set_mode callback to handle pullup
>  * New patch to set the mode to device or host in chipidea udc pullup
>    function to toggle the pullup for HS mode
>  * New patch to drop lock around event_notify callback to avoid lockdep
>    issues
>  * Removal of extcon usage from HS phy driver
>  * Picked up acks from Heikki and Peter on ULPI core patch
> 
> Changes from v4:
>  * Picked up Acks from Rob
>  * Updated HS phy init sequence DT property to restrict it to offsets
> 
> Changes from v3:
>  * Picked up Acks from Peter
>  * Updated extcon consolidation patch per Peter's comments
>  * Folded in simplification from Heikki for ULPI DT matching
> 
> Changes from v2:
>  * Added SoC specific compatibles in phy bindings
>  * Dropped AVVIS patch for OTG statemachine
>  * New patch to consolidate extcon handlers
>  * Picked up Acks from Peter
>  * Rebased onto v4.8-rc1
>  * Reworked ULPI OF code to look at vid == 0 instead of pid == 0
>  * Dropped ULPI bindings for vid and pid overrides
> 
> Changes from v1:
>  * Reworked ULPI device probing to keep using vendor/product ids that
>    come from DT if needed and falls back to OF style match when product id
>    is 0
>  * PHY init later patch was rejected so that moved to a quirk flag and
>    the msm wrapper started managing the phy on/off
>  * Updated clk requirements for HSIC phy in binding doc
>  * Added optional clk in wrapper for "housekeeping" found on older qcom
>    platforms
>  * Bug fix to OTGSC polling function
>  * Changed runtime PM patch to set as active instead of get/put
> 
> TODO:
>  * DMA fails on arm64 so we need something like [2] to make it work.
>  * The db410c needs a driver to toggle the onboard switch to connect
>    the usb hub instead of micro port when the usb cable is disconnected.
>    I've sent a patch set for this[3], which needs some further
>    discussion/development. The current plan is to reintroduce the usb
>    mux framework.
>  * apq8064 platforms need a vbus regulator to really use otg and I haven't
>    tried out the RPM based regulators yet
>  * The HSIC phy on the apq8074 dragonboard is connected to a usb4604
>    device which requires the i2c driver to probe and send an i2c
>    sequence before the HSIC controller enumerates or HSIC doesn't work.
>    Right now I have a hack to force the controller to probe defer
>    once so that usb4604 probes first. This needs a more proper solution
>    like having the DT describe a linkage between the controller and
>    the usb device so we can enforce probe ordering. My current plan
>    is to use DT graphs/endpoints for this.
> 
> [1] https://git.linaro.org/people/stephen.boyd/linux.git/log/?h=usb-hsic-8074
> [2] https://patchwork.kernel.org/patch/9319527/
> [3] https://lkml.kernel.org/r/20160914014246.31847-1-stephen.boyd@linaro.org
> 
> Stephen Boyd (3):
>   usb: chipidea: Configure phy for appropriate mode
>   phy: Add support for Qualcomm's USB HSIC phy
>   phy: Add support for Qualcomm's USB HS phy
> 
>  .../devicetree/bindings/phy/qcom,usb-hs-phy.txt    |  84 ++++++
>  .../devicetree/bindings/phy/qcom,usb-hsic-phy.txt  |  65 +++++
>  drivers/phy/Kconfig                                |  15 ++
>  drivers/phy/Makefile                               |   2 +
>  drivers/phy/phy-qcom-usb-hs.c                      | 296 +++++++++++++++++++++
>  drivers/phy/phy-qcom-usb-hsic.c                    | 160 +++++++++++
>  drivers/usb/chipidea/core.c                        |  20 +-
>  7 files changed, 636 insertions(+), 6 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt
>  create mode 100644 Documentation/devicetree/bindings/phy/qcom,usb-hsic-phy.txt
>  create mode 100644 drivers/phy/phy-qcom-usb-hs.c
>  create mode 100644 drivers/phy/phy-qcom-usb-hsic.c
>