Hi, These patches add generic support for USB VBUS/ID pin detection using extcon framework. The USB ID pin on DRA7xx is connected via the gpio expander pcf8575. The interrupt line of the same is connected to the gpio 11 of bank 6. The following driver relies on the gpio interrupt to notify the actual ID pin values by which the dwc3 driver determines the HOST/Peripheral roles. These patches are on top of following merges. v3.11-rc3 dra7 baseport tree [1] , with balbi/next ,control-usb multi instance support [2], chanwoo/extcon-next, roger's patches for USB host adaptation[3],Laurent Pinchart's patch to Enable pcf857x GPIO expander for Device Tree[4] and pcf857x cleanup patch [5]. Patches are available at extcon_gpio_usbvid in git tree git://git.ti.com/~georgecherian/ti-linux-kernel/georgec-connectivity-linux-feature-tree.git [1] - dra7 base tree https://github.com/lokeshvutla/linux/tree/dra7-3.11-rc3-base [2] - multiple control-usb instances https://github.com/rogerq/linux/tree/usb-control-module [3] - [PATCH 0/4] ARM: DRA7-evm: USB host adaptation https://lkml.org/lkml/2013/8/1/335 [4] - [PATCH v5] gpio: pcf857x: Add OF support https://lkml.org/lkml/2013/8/27/70 [5] - [PATCH] gpio: pcf857x: cleanup irq_demux_work and use threaded irq https://lkml.org/lkml/2013/8/27/207 George Cherian (3): extcon: extcon-gpio-usbvid: Generic USB VBUS/ID detection via GPIO drivers: Makefile: Extcon is a framework so bump it up ARM: dts: dra7-evm: Add extcon nodes for USB ID pin detection .../bindings/extcon/extcon-gpio-usbvid.txt | 20 +++ arch/arm/boot/dts/dra7-evm.dts | 52 +++++- drivers/Makefile | 2 +- drivers/extcon/Kconfig | 7 +- drivers/extcon/Makefile | 2 +- drivers/extcon/extcon-gpio-usbvid.c | 185 +++++++++++++++++---- 6 files changed, 226 insertions(+), 42 deletions(-) create mode 100644 Documentation/devicetree/bindings/extcon/extcon-gpio-usbvid.txt -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
