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- * The simple MMC power sequence provider
- The purpose of the simple MMC power sequence provider is to supports a set of
- common properties between various SOC designs. It thus enables us to use the
- same provider for several SOC designs.
- Required properties:
- - compatible : contains "mmc-pwrseq-simple".
- Optional properties:
- - reset-gpios : contains a list of GPIO specifiers. The reset GPIOs are asserted
- at initialization and prior we start the power up procedure of the card.
- They will be de-asserted right after the power has been provided to the
- card.
- - clocks : Must contain an entry for the entry in clock-names.
- See ../clocks/clock-bindings.txt for details.
- - clock-names : Must include the following entry:
- "ext_clock" (External clock provided to the card).
- - post-power-on-delay-ms : Delay in ms after powering the card and
- de-asserting the reset-gpios (if any)
- Example:
- sdhci0_pwrseq {
- compatible = "mmc-pwrseq-simple";
- reset-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
- clocks = <&clk_32768_ck>;
- clock-names = "ext_clock";
- }
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