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mmc: dt-bindings: add ZTE ZX296718 MMC bindings 

Document the device-tree binding of ZTE MMC host on
ZX296718 SoC.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Jun Nie 2017-01-06 12:24:45 +08:00 committed by Ulf Hansson
parent d6fced8337
commit 4c8a03c727
1 changed files with 33 additions and 0 deletions
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Documentation/devicetree/bindings/mmc/zx-dw-mshc.txt Normal file
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* ZTE specific extensions to the Synopsys Designware Mobile Storage
Host Controller
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 ZTE specific
extensions to the Synopsys Designware Mobile Storage Host Controller.
Required Properties:
* compatible: should be
- "zte,zx296718-dw-mshc": for ZX SoCs
Example:
mmc1: mmc@1110000 {
compatible = "zte,zx296718-dw-mshc";
reg = <0x01110000 0x1000>;
interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
fifo-depth = <32>;
data-addr = <0x200>;
fifo-watermark-aligned;
bus-width = <4>;
clock-frequency = <50000000>;
clocks = <&topcrm SD0_AHB>, <&topcrm SD0_WCLK>;
clock-names = "biu", "ciu";
num-slots = <1>;
max-frequency = <50000000>;
cap-sdio-irq;
cap-sd-highspeed;
status = "disabled";
};