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dt-bindings: mmc: Add binding for BlueField SoC 

This commit adds "mellanox,bluefield-dw-mshc" for dwmmc driver
extension on Mellanox BlueField SoC platform.

Signed-off-by: Liming Sun <lsun@mellanox.com>
Reviewed-by: David Woods <dwoods@mellanox.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Liming Sun 2018-05-08 14:46:49 -04:00 committed by Ulf Hansson
parent 86958dcc5a
commit 0e190fd071
1 changed files with 29 additions and 0 deletions
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Documentation/devicetree/bindings/mmc/bluefield-dw-mshc.txt Normal file
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* Mellanox Bluefield SoC specific extensions to the Synopsys Designware
Mobile Storage Host Controller
Read synopsys-dw-mshc.txt for more details
The Synopsys designware mobile storage host controller is used to interface
a SoC with storage medium such as eMMC or SD/MMC cards. This file documents
differences between the core Synopsys dw mshc controller properties described
by synopsys-dw-mshc.txt and the properties used by the Mellanox Bluefield SoC
specific extensions to the Synopsys Designware Mobile Storage Host Controller.
Required Properties:
* compatible: should be one of the following.
- "mellanox,bluefield-dw-mshc": for controllers with Mellanox Bluefield SoC
specific extensions.
Example:
/* Mellanox Bluefield SoC MMC */
mmc@6008000 {
compatible = "mellanox,bluefield-dw-mshc";
reg = <0x6008000 0x400>;
interrupts = <32>;
fifo-depth = <0x100>;
clock-frequency = <24000000>;
bus-width = <8>;
cap-mmc-highspeed;
};