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authorEric Anholt <eric@anholt.net>2017-03-08 10:19:01 +0100
committerUlf Hansson <ulf.hansson@linaro.org>2017-04-24 21:41:24 +0200
commitebdb4d8e0d2577bd8e1d0d54e1c2e9445bdc90e6 (patch)
tree58408d2b484ed35a053f28d1a83fc3307e7d377a /Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhost.txt
parentmmc: core: simplify return code (diff)
downloadlinux-dev-ebdb4d8e0d2577bd8e1d0d54e1c2e9445bdc90e6.tar.xz
linux-dev-ebdb4d8e0d2577bd8e1d0d54e1c2e9445bdc90e6.zip
dt-bindings: Add binding for brcm,bcm2835-sdhost.
This is the other SD controller on the platform, which can be swapped to the role of SD card host using pin muxing. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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diff --git a/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhost.txt b/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhost.txt
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+Broadcom BCM2835 SDHOST controller
+
+This file documents differences between the core properties described
+by mmc.txt and the properties that represent the BCM2835 controller.
+
+Required properties:
+- compatible: Should be "brcm,bcm2835-sdhost".
+- clocks: The clock feeding the SDHOST controller.
+
+Optional properties:
+- dmas: DMA channel for read and write.
+ See Documentation/devicetree/bindings/dma/dma.txt for details
+
+Example:
+
+sdhost: mmc@7e202000 {
+ compatible = "brcm,bcm2835-sdhost";
+ reg = <0x7e202000 0x100>;
+ interrupts = <2 24>;
+ clocks = <&clocks BCM2835_CLOCK_VPU>;
+ dmas = <&dma 13>;
+ dma-names = "rx-tx";
+};