[PATCH v2 3/6] mmc: pwrseq: Document optional clock for the simple power sequence

Javier Martinez Canillas
2015-01-28T18:15:50Z

Some WLAN chips attached to a SDIO interface, need an external clock
to be operational. Since this is very common, extend the simple MMC
power sequence DT binding to support an optional clock.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
---

Changes since v1: None.
---
Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.txt | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.txt b/Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.txt
index eaae652213ae..a462c50f19a8 100644
--- a/Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.txt
@@ -12,6 +12,10 @@ Optional properties:
at initialization and prior we start the power up procedure of the card.
They will be de-asserted right after the power has been provided to the
card.
+- clocks : Must contain an entry for the entry in clock-names.
+ See ../clocks/clock-bindings.txt for details.
+- clock-names : Must include the following entry:
+ "ext_clock" (External clock provided to the card).

Example:

--
2.1.3