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Documentation: synopsys-dw-mshc: add bindings for idmac and edmac 

synopsys-dw-mshc supports three types of transfer mode. We add
bindings and description for how to use them at runtime.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Shawn Lin 2015-09-16 14:41:50 +08:00 committed by Ulf Hansson
parent 70692752af
commit 87ffa7d30d
1 changed files with 25 additions and 0 deletions
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25
Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
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@ -75,6 +75,12 @@ Optional properties:
* vmmc-supply: The phandle to the regulator to use for vmmc. If this is
specified we'll defer probe until we can find this regulator.
* dmas: List of DMA specifiers with the controller specific format as described
in the generic DMA client binding. Refer to dma.txt for details.
* dma-names: request names for generic DMA client binding. Must be "rx-tx".
Refer to dma.txt for details.
Aliases:
- All the MSHC controller nodes should be represented in the aliases node using
@ -95,6 +101,8 @@ board specific portions as listed below.
#size-cells = <0>;
};
[board specific internal DMA resources]
dwmmc0@12200000 {
clock-frequency = <400000000>;
clock-freq-min-max = <400000 200000000>;
@ -107,3 +115,20 @@ board specific portions as listed below.
cap-mmc-highspeed;
cap-sd-highspeed;
};
[board specific generic DMA request binding]
dwmmc0@12200000 {
clock-frequency = <400000000>;
clock-freq-min-max = <400000 200000000>;
num-slots = <1>;
broken-cd;
fifo-depth = <0x80>;
card-detect-delay = <200>;
vmmc-supply = <&buck8>;
bus-width = <8>;
cap-mmc-highspeed;
cap-sd-highspeed;
dmas = <&pdma 12>;
dma-names = "rx-tx";
};