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| author | Chris Ball <cjb@laptop.org> | 2012-08-22 13:21:01 -0400 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-09-04 13:58:26 -0400 |
| commit | abe1e05da365350ac282ba5f6831aae13d97074e (patch) | |
| tree | f1c57aaadeb9a761b250cdb185c78b4c90d38904 /Documentation | |
| parent | 0a4585c634534ca5a6d5e60b4d2850b4efedc85e (diff) | |
| download | blackbird-op-linux-abe1e05da365350ac282ba5f6831aae13d97074e.tar.gz blackbird-op-linux-abe1e05da365350ac282ba5f6831aae13d97074e.zip | |
mmc: dt: Add card-detection properties to core binding.
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'Documentation')
| -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 8a6811f4a02f..8e2e0ba2f486 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: |
