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Date:   Fri, 22 Mar 2019 12:38:04 +0100
From:   Christoph Muellner <>
Cc:     Christoph Muellner <>,
        Philipp Tomsich <>,
        Michal Simek <>,
        Viresh Kumar <>,
        Enric Balletbo i Serra <>,
        Matthias Brugger <>,
        Douglas Anderson <>,
        Klaus Goger <>,
        Lin Huang <>, Randy Li <>,
        Tony Xie <>,
        Vicente Bergas <>,
        Ezequiel Garcia <>,,,,,
Subject: [PATCH v3 1/3] dt-bindings: mmc: Add disable-cqe-dcmd property.

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 <>
 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 cdbcfd3a4ff2..c269dbe384fe 100644
--- 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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