[PATCH v2 02/11] mmc: deprecate redundant cd-inverted and wp-inverted DT properties

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



GPIO DT bindings have a standard way to specify GPIO polarity - the
OF_GPIO_ACTIVE_LOW flag. Use that instead of custom cd-inverted and
wp-inverted properties.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
---
 Documentation/devicetree/bindings/mmc/mmc.txt |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt
index 34f28ed..e180892 100644
--- a/Documentation/devicetree/bindings/mmc/mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc.txt
@@ -19,11 +19,19 @@ Only one of the properties in this section should be supplied:
 Optional properties:
 - wp-gpios: Specify GPIOs for write protection, see gpio binding
 - cd-inverted: when present, polarity on the cd gpio line is inverted
+  (deprecated)
 - wp-inverted: when present, polarity on the wp gpio line is inverted
+  (deprecated)
 - max-frequency: maximum operating clock frequency
 - no-1-8-v: when present, denotes that 1.8v card voltage is not supported on
   this system, even if the controller claims it is.
 
+cd-inverted and wp-inverted properties are deprecated ans shouldn't be used,
+instead pleaseuse the OF_GPIO_ACTIVE_LOW flag in respective GPIO bindings. Note,
+that the default (as defined by the SDHCI standard) CD and WP polarity is
+active-low, so, OF_GPIO_ACTIVE_LOW should normally be set, and only be left
+clear, if the polarity is inverted.
+
 Optional SDIO properties:
 - keep-power-in-suspend: Preserves card power during a suspend/resume cycle
 - enable-sdio-wakeup: Enables wake up of host system on SDIO IRQ assertion
-- 
1.7.2.5

--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux