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authorDaniel Mack <zonque@gmail.com>2012-07-25 15:28:35 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-08-03 23:03:59 +0100
commit02286190f3ec86f03025a60c4d3f747ff1047248 (patch)
tree7cf1d705d24807b3c5bea0fd22d45ee8f7227475 /Documentation
parent85d07e4d625d6511934799f7df93e9111ac2c88b (diff)
downloadop-kernel-dev-02286190f3ec86f03025a60c4d3f747ff1047248.zip
op-kernel-dev-02286190f3ec86f03025a60c4d3f747ff1047248.tar.gz
ASoC: Add reset-gpio DT property to cs4270 driver
In the process of moving over from static board files to the device tree, reset pins of peripheral reset pins should be handled by their corresponding drivers. Add a reset-gpio DT property to the cs4270 driver, and de-assert it before probing the chip. The logic could be augmented some day to re-assert it when codec is put to suspend. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/sound/cs4270.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/cs4270.txt b/Documentation/devicetree/bindings/sound/cs4270.txt
index 7f0bfd8..6b222f9 100644
--- a/Documentation/devicetree/bindings/sound/cs4270.txt
+++ b/Documentation/devicetree/bindings/sound/cs4270.txt
@@ -8,6 +8,11 @@ Required properties:
- reg : the I2C address of the device for I2C
+Optional properties:
+
+ - reset-gpio : a GPIO spec for the reset pin. If specified, it will be
+ deasserted before communication to the codec starts.
+
Example:
codec: cs4270@48 {
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