1*c66ec88fSEmmanuel Vadot* The simple MMC power sequence provider
2*c66ec88fSEmmanuel Vadot
3*c66ec88fSEmmanuel VadotThe purpose of the simple MMC power sequence provider is to supports a set of
4*c66ec88fSEmmanuel Vadotcommon properties between various SOC designs. It thus enables us to use the
5*c66ec88fSEmmanuel Vadotsame provider for several SOC designs.
6*c66ec88fSEmmanuel Vadot
7*c66ec88fSEmmanuel VadotRequired properties:
8*c66ec88fSEmmanuel Vadot- compatible : contains "mmc-pwrseq-simple".
9*c66ec88fSEmmanuel Vadot
10*c66ec88fSEmmanuel VadotOptional properties:
11*c66ec88fSEmmanuel Vadot- reset-gpios : contains a list of GPIO specifiers. The reset GPIOs are asserted
12*c66ec88fSEmmanuel Vadot	at initialization and prior we start the power up procedure of the card.
13*c66ec88fSEmmanuel Vadot	They will be de-asserted right after the power has been provided to the
14*c66ec88fSEmmanuel Vadot	card.
15*c66ec88fSEmmanuel Vadot- clocks : Must contain an entry for the entry in clock-names.
16*c66ec88fSEmmanuel Vadot  See ../clocks/clock-bindings.txt for details.
17*c66ec88fSEmmanuel Vadot- clock-names : Must include the following entry:
18*c66ec88fSEmmanuel Vadot  "ext_clock" (External clock provided to the card).
19*c66ec88fSEmmanuel Vadot- post-power-on-delay-ms : Delay in ms after powering the card and
20*c66ec88fSEmmanuel Vadot	de-asserting the reset-gpios (if any)
21*c66ec88fSEmmanuel Vadot- power-off-delay-us : Delay in us after asserting the reset-gpios (if any)
22*c66ec88fSEmmanuel Vadot	during power off of the card.
23*c66ec88fSEmmanuel Vadot
24*c66ec88fSEmmanuel VadotExample:
25*c66ec88fSEmmanuel Vadot
26*c66ec88fSEmmanuel Vadot	sdhci0_pwrseq {
27*c66ec88fSEmmanuel Vadot		compatible = "mmc-pwrseq-simple";
28*c66ec88fSEmmanuel Vadot		reset-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
29*c66ec88fSEmmanuel Vadot		clocks = <&clk_32768_ck>;
30*c66ec88fSEmmanuel Vadot		clock-names = "ext_clock";
31*c66ec88fSEmmanuel Vadot	}
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