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Subject[PATCH 4.19 122/190] dt-bindings: mmc: Add supports-cqe property
[ Upstream commit c7fddbd5db5cffd10ed4d18efa20e36803d1899f ]

Add supports-cqe optional property for MMC hosts.

This property is used to identify the specific host controller
supporting command queue.

Signed-off-by: Sowjanya Komatineni <>
Reviewed-by: Thierry Reding <>
Reviewed-by: Rob Herring <>
Signed-off-by: Ulf Hansson <>
Signed-off-by: Sasha Levin <>
Documentation/devicetree/bindings/mmc/mmc.txt | 2 ++
1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt
index f5a0923b34ca1..cdbcfd3a4ff21 100644
--- a/Documentation/devicetree/bindings/mmc/mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc.txt
@@ -62,6 +62,8 @@ Optional properties:
be referred to mmc-pwrseq-simple.txt. But now it's reused as a tunable delay
waiting for I/O signalling and card power supply to be stable, regardless of
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.

*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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