DTS: bindings: wl1251: mark ti,power-gpio as optional

It is now only useful for SPI interface.
Power control of SDIO mode is done through mmc core.

Suggested by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/Documentation/devicetree/bindings/net/wireless/ti,wl1251.txt b/Documentation/devicetree/bindings/net/wireless/ti,wl1251.txt
index f38950560982edbbbf9a69514153f0bc32c31586..88fd28d15eaca284f54d9c112bf29d37f2fa4dd2 100644 (file)
--- a/Documentation/devicetree/bindings/net/wireless/ti,wl1251.txt
+++ b/Documentation/devicetree/bindings/net/wireless/ti,wl1251.txt
@@ -9,11 +9,12 @@ Required properties:
 - spi-max-frequency : Maximum SPI clocking speed of device in Hz
 - interrupts :        Should contain interrupt line
 - vio-supply :        phandle to regulator providing VIO
-- ti,power-gpio :     GPIO connected to chip's PMEN pin
 
 Optional properties:
 - ti,wl1251-has-eeprom : boolean, the wl1251 has an eeprom connected, which
                          provides configuration data (calibration, MAC, ...)
+- ti,power-gpio :       GPIO connected to chip's PMEN pin if operated in
+                        SPI mode
 - Please consult Documentation/devicetree/bindings/spi/spi-bus.txt
   for optional SPI connection related properties,