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Diffstat (limited to 'Documentation/devicetree/bindings/mmc/mmc.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/mmc.txt | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index 8a6811f4a02..8e2e0ba2f48 100644 --- a/Documentation/devicetree/bindings/mmc/mmc.txt +++ b/Documentation/devicetree/bindings/mmc/mmc.txt @@ -9,12 +9,17 @@ Interpreted by the OF core: Required properties: - bus-width: Number of data lines, can be <1>, <4>, or <8> +Card detection: +If no property below is supplied, standard SDHCI card detect is used. +Only one of the properties in this section should be supplied: + - broken-cd: There is no card detection available; polling must be used. + - cd-gpios: Specify GPIOs for card detection, see gpio binding + - non-removable: non-removable slot (like eMMC); assume always present. + Optional properties: -- cd-gpios: Specify GPIOs for card detection, see gpio binding - wp-gpios: Specify GPIOs for write protection, see gpio binding - cd-inverted: when present, polarity on the cd gpio line is inverted - wp-inverted: when present, polarity on the wp gpio line is inverted -- non-removable: non-removable slot (like eMMC) - max-frequency: maximum operating clock frequency Example: |