Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / mmc / usdhi6rol0.txt

diff --git a/kernel/Documentation/devicetree/bindings/mmc/usdhi6rol0.txt b/kernel/Documentation/devicetree/bindings/mmc/usdhi6rol0.txt
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+++ b/kernel/Documentation/devicetree/bindings/mmc/usdhi6rol0.txt
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+* Renesas usdhi6rol0 SD/SDIO host controller
+
+Required properties:
+
+- compatible:  must be
+               "renesas,usdhi6rol0"
+- interrupts:  3 interrupts, named "card detect", "data" and "SDIO" must be
+               specified
+- clocks:      a clock binding for the IMCLK input
+
+Optional properties:
+
+- vmmc-supply: a phandle of a regulator, supplying Vcc to the card
+- vqmmc-supply:        a phandle of a regulator, supplying VccQ to the card
+
+Additionally any standard mmc bindings from mmc.txt can be used.
+
+Example:
+
+sd0: sd@ab000000 {
+       compatible = "renesas,usdhi6rol0";
+       reg = <0xab000000 0x200>;
+       interrupts = <0 23 0x4
+                     0 24 0x4
+                     0 25 0x4>;
+       interrupt-names = "card detect", "data", "SDIO";
+       bus-width = <4>;
+       max-frequency = <50000000>;
+       cap-power-off-card;
+       clocks = <&imclk>;
+       vmmc-supply = <&vcc_sd0>;
+       vqmmc-supply = <&vccq_sd0>;
+};