Merge branch 'drivers/mmc' into next/dt2

  - interrupt-parent : interrupt source phandle.

  - clock-frequency : specifies eSDHC base clock frequency.

  - sdhci,wp-inverted : (optional) specifies that eSDHC controller

    reports inverted write-protect state;

    reports inverted write-protect state; New devices should use

    the generic "wp-inverted" property.

  - sdhci,1-bit-only : (optional) specifies that a controller can

    only handle 1-bit data transfers.

    only handle 1-bit data transfers. New devices should use the

    generic "bus-width = <1>" property.

  - sdhci,auto-cmd12: (optional) specifies that a controller can

    only handle auto CMD12.

- interrupts : Should contain eSDHC interrupt

Optional properties:

- fsl,card-wired : Indicate the card is wired to host permanently

- non-removable : Indicate the card is wired to host permanently

- fsl,cd-internal : Indicate to use controller internal card detection

- fsl,wp-internal : Indicate to use controller internal write protection

- cd-gpios : Specify GPIOs for card detection

Optional properties:

- gpios : may specify GPIOs in this order: Card-Detect GPIO,

  Write-Protect GPIO.

  Write-Protect GPIO. Note that this does not follow the

  binding from mmc.txt, for historic reasons.

- interrupts : the interrupt of a card detect interrupt.

- interrupt-parent : the phandle for the interrupt controller that

  services interrupts for this device.

These properties are common to multiple MMC host controllers. Any host

that requires the respective functionality should implement them using

these definitions.

Required properties:

- bus-width: Number of data lines, can be <1>, <4>, or <8>

Optional properties:

- cd-gpios : Specify GPIOs for card detection, see gpio binding

- wp-gpios : Specify GPIOs for write protection, see gpio binding

- cd-inverted: when present, polarity on the wp gpio line is inverted

- wp-inverted: when present, polarity on the wp gpio line is inverted

- non-removable: non-removable slot (like eMMC)

- max-frequency: maximum operating clock frequency

Example:

sdhci@ab000000 {

	compatible = "sdhci";

	reg = <0xab000000 0x200>;

	interrupts = <23>;

	bus-width = <4>;

	cd-gpios = <&gpio 69 0>;

	cd-inverted;

	wp-gpios = <&gpio 70 0>;

	max-frequency = <50000000>;

}

- compatible : Should be "nvidia,<chip>-sdhci"

- reg : Should contain SD/MMC registers location and length

- interrupts : Should contain SD/MMC interrupt

- bus-width : Number of data lines, can be <1>, <4>, or <8>

Optional properties:

- cd-gpios : Specify GPIOs for card detection

- wp-gpios : Specify GPIOs for write protection

- power-gpios : Specify GPIOs for power control

- support-8bit : Boolean, indicates if 8-bit mode should be used.

Example:

	cd-gpios = <&gpio 69 0>; /* gpio PI5 */

	wp-gpios = <&gpio 57 0>; /* gpio PH1 */

	power-gpios = <&gpio 155 0>; /* gpio PT3 */

	support-8bit;

	bus-width = <8>;

};