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authorSascha Hauer <s.hauer@pengutronix.de>2015-03-03 08:11:01 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2015-03-03 08:11:01 +0100
commiteaa819409db6ac80fbd7c3d36450b2d1bec93576 (patch)
tree6cd5e0c7f8abe121af237b701ee9e0e1b6f7e40d /dts/Bindings/mmc/mmc-pwrseq-simple.txt
parent0c9aadb6185e1d84746b632284bc89e4e4c80cd3 (diff)
downloadbarebox-eaa819409db6ac80fbd7c3d36450b2d1bec93576.tar.gz
barebox-eaa819409db6ac80fbd7c3d36450b2d1bec93576.tar.xz
dts: update to v4.0-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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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).
+
+Example:
+
+ sdhci0_pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ reset-gpios = <&gpio1 12 0>;
+ }