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dt-bindings: mmc: document alias support

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As for I2C and SPI, it now is possible to reserve a fixed index for
mmc/mmcblk devices.

Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Link: https://lore.kernel.org/r/20200901085004.2512-1-matthias.schiffer@ew.tq-group.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Matthias Schiffer 2020-09-01 10:50:03 +02:00 committed by Ulf Hansson
parent e0c29be62c
commit 1796164fac
1 changed files with 4 additions and 0 deletions
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Documentation/devicetree/bindings/mmc/mmc-controller.yaml
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@ -14,6 +14,10 @@ description: |
that requires the respective functionality should implement them using that requires the respective functionality should implement them using
these definitions. these definitions.
It is possible to assign a fixed index mmcN to an MMC host controller
(and the corresponding mmcblkN devices) by defining an alias in the
/aliases device tree node.
properties: properties:
$nodename: $nodename:
pattern: "^mmc(@.*)?$" pattern: "^mmc(@.*)?$"