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Subject[PATCH/RFT v2 00/17] Add DT support for ohci-da8xx
Date
From: Axel Haslam <ahaslam@baylibre.com>

The purpose of this patch series is to add DT support and modernize
the ohci-da8xx glue driver without breaking the non-DT boot,
which is still used in unconverted davinci devices.

The first couple of patches, are the recent and ongoing efforts from
David Lechner to clean up davinci-mach code and the ochi-da8xx driver,
Im including these patches on this series for completeness sake.

Then I re-based an old patch by Manjunath Goudar[4] to be able to build
the driver as a module. We can now add this patch because we removed
references to sysconf registers by using David's patches.

Then I prepare the stage for a DT boot which does not depend on any
mach-arch/* callbacks by using a regulator to handle the vbus and
over current gpios. For this, i extended the fixed regulator driver to
register for an irq and send a regulator notification if an over curent
pin is specified.

The only dependency left for this series is the recently re-posted patch
by David to remove references to mach-code[1], which is approved and
should be picked up soon.

Note 1: Testing was done on a omap138-lcdk board, using DT, and non-DT boot,
and checking that in both cases the hub, usb mass storage and an input
device are correctly enumerated and working. The omap138-lcdk does not
have gpios to control vbus and get over current interrupt notifications.
If anyone has a da830-evm based board and could confirm that ohci is
correctly working, i would appreciate it.
(the OHCI option needs to be enabled in menuconfig)

Note 2: It seems that the davinci-gpio driver is broken for DT based boot
and any gpio > 32. (luckly none of the DT based boards use gpios yet)
The issue is discussed here [2]

Note 3: A git branch based on tag: next-20161021 with the dependencies
is available in my github here [3].

[1] usb: ohci-da8xx: Remove code that references mach
http://marc.info/?l=linux-kernel&m=147632744323084&w=4

[2] thread about invalid gpio in davinci
http://www.gossamer-threads.com/lists/linux/kernel/2550178

[3] Git branch:
https://github.com/axelhaslamx/linux-axel/commits/ohci-da8xx-dt-v2.1

[4] Separate ohci-da8xx driver patch
https://patches.linaro.org/patch/18234/

Changes from v1->v2
* Rebased and added patch to make ohci a separate driver
* Use a regulator instead of handling Gpios (David Lechner)
* Add an overcurrent mode to regulator framework
* Fixed regulator is able to register for and overcurrent irq
* Added patch by Alexandre to remove build warnings
* Moved global variables into private hcd structure.

Alexandre Bailon (1):
ARM: davinci: da8xx: Fix some redefined symbol warnings

Axel Haslam (10):
ARM: davinci: da8xx: Enable the usb20 "per" clk on phy_clk_enable
ARM: davinci: hawk: add full constraints for ohci plat boot
regulator: fixed: Add over current event
USB: da8xx: use flag instead of bitmask for over current change
USB: ochi-da8xx: Use a regulator for vbus/overcurrent
USB: da8xx: use ohci priv data instead of globals
ARM: davinci: register the usb20_phy clock on the DT file
usb: host: ohci-da8xx: Add devicetree bindings documentation
USB: ohci-da8xx: Allow probing from DT
ARM: dts: da850: add usb device node

David Lechner (5):
ARM: davinci: da8xx: add usb phy clocks
ARM: davinci: da8xx: Add CFGCHIP syscon platform declaration.
ARM: davinci: da8xx: Add USB PHY platform declaration
ARM: DTS: da850: Add cfgchip syscon node
ARM: DTS: da850: Add usb phy node

Manjunath Goudar (1):
USB: OHCI: make ohci-da8xx a separate driver

.../bindings/regulator/fixed-regulator.txt | 4 +
.../devicetree/bindings/usb/ohci-da8xx.txt | 39 +++
arch/arm/boot/dts/da850-lcdk.dts | 8 +
arch/arm/boot/dts/da850.dtsi | 17 +
arch/arm/mach-davinci/board-da830-evm.c | 152 +++-----
arch/arm/mach-davinci/board-da850-evm.c | 4 +
arch/arm/mach-davinci/board-mityomapl138.c | 4 +
arch/arm/mach-davinci/board-omapl138-hawk.c | 122 ++-----
arch/arm/mach-davinci/da8xx-dt.c | 2 +
arch/arm/mach-davinci/devices-da8xx.c | 28 ++
arch/arm/mach-davinci/include/mach/da8xx.h | 8 +-
arch/arm/mach-davinci/usb-da8xx.c | 244 ++++++++++++-
drivers/regulator/fixed.c | 64 ++++
drivers/usb/host/Kconfig | 2 +-
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ohci-da8xx.c | 382 +++++++++++----------
drivers/usb/host/ohci-hcd.c | 18 -
include/linux/platform_data/usb-davinci.h | 43 ---
include/linux/regulator/consumer.h | 5 +
include/linux/regulator/fixed.h | 3 +
20 files changed, 703 insertions(+), 447 deletions(-)
create mode 100644 Documentation/devicetree/bindings/usb/ohci-da8xx.txt

--
1.9.1

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