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Subject[PATCH 5.1 044/128] dt-bindings: mmc: Add disable-cqe-dcmd property.
From: Christoph Muellner <>

commit 28f22fb755ecf9f933f045bc0afdb8140641b01c upstream.

Add disable-cqe-dcmd as optional property for MMC hosts.
This property allows to disable or not enable the direct command
features of the command queue engine.

Signed-off-by: Christoph Muellner <>
Signed-off-by: Philipp Tomsich <>
Fixes: 84362d79f436 ("mmc: sdhci-of-arasan: Add CQHCI support for arasan,sdhci-5.1")
Signed-off-by: Ulf Hansson <>
Signed-off-by: Greg Kroah-Hartman <>

Documentation/devicetree/bindings/mmc/mmc.txt | 2 ++
1 file changed, 2 insertions(+)

--- a/Documentation/devicetree/bindings/mmc/mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc.txt
@@ -64,6 +64,8 @@ Optional properties:
whether pwrseq-simple is used. Default to 10ms if no available.
- supports-cqe : The presence of this property indicates that the corresponding
MMC host controller supports HW command queue feature.
+- disable-cqe-dcmd: This property indicates that the MMC controller's command
+ queue engine (CQE) does not support direct commands (DCMDs).

*NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line
polarity properties, we have to fix the meaning of the "normal" and "inverted"

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