Merge branch 'sched/urgent' into sched/core, to pick up fixes before merging new patches

The device tree documentation for the keystone machines are located at

        Documentation/devicetree/bindings/arm/keystone/keystone.txt

Known issues & workaround

-------------------------

Some of the device drivers used on keystone are re-used from that from

DaVinci and other TI SoCs. These device drivers may use clock APIs directly.

Some of the keystone specific drivers such as netcp uses run time power

management API instead to enable clock. As this API has limitations on

keystone, following workaround is needed to boot Linux.

   Add 'clk_ignore_unused' to the bootargs env variable in u-boot. Otherwise

   clock frameworks will try to disable clocks that are unused and disable

   the hardware. This is because netcp related power domain and clock

   domains are enabled in u-boot as run time power management API currently

   doesn't enable clocks for netcp due to a limitation. This workaround is

   expected to be removed in the future when proper API support becomes

   available. Until then, this work around is needed.

Document Author

---------------

Murali Karicheri <m-karicheri2@ti.com>

     parameter.

  1: The multi-queue block layer is instantiated with a hardware dispatch

     queue for each CPU node in the system.

use_lightnvm=[0/1]: Default: 0

  Register device with LightNVM. Requires blk-mq to be used.

Optional properties:

- ti,hwmods:	Name of the hwmods associated to the eDMA CC

- ti,edma-memcpy-channels: List of channels allocated to be used for memcpy, iow

		these channels will be SW triggered channels. The list must

		contain 16 bits numbers, see example.

		these channels will be SW triggered channels. See example.

- ti,edma-reserved-slot-ranges: PaRAM slot ranges which should not be used by

		the driver, they are allocated to be used by for example the

		DSP. See example.

	ti,tptcs = <&edma_tptc0 7>, <&edma_tptc1 7>, <&edma_tptc2 0>;

	/* Channel 20 and 21 is allocated for memcpy */

	ti,edma-memcpy-channels = /bits/ 16 <20 21>;

	/* The following PaRAM slots are reserved: 35-45 and 100-110 */

	ti,edma-reserved-slot-ranges = /bits/ 16 <35 10>,

				       /bits/ 16 <100 10>;

	ti,edma-memcpy-channels = <20 21>;

	/* The following PaRAM slots are reserved: 35-44 and 100-109 */

	ti,edma-reserved-slot-ranges = <35 10>, <100 10>;

};

edma_tptc0: tptc@49800000 {

      0 = active high

      1 = active low

Optional properties:

- little-endian : GPIO registers are used as little endian. If not

                  present registers are used as big endian by default.

Example:

gpio0: gpio@1100 {

Required subnode-properties:

	- label: Descriptive name of the key.

	- linux,code: Keycode to emit.

	- channel: Channel this key is attached to, mut be 0 or 1.

	- channel: Channel this key is attached to, must be 0 or 1.

	- voltage: Voltage in µV at lradc input when this key is pressed.

Example: