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authorBo Shen <voice.shen@atmel.com>2014-02-10 07:09:46 +0100
committerMark Brown <broonie@linaro.org>2014-02-12 18:21:36 +0100
commita69d0009aad51e16bf294d78a3b2e4fe655cf10f (patch)
tree732f0acdaea5cd5558ef29889f99f8c3716be1e7 /Documentation/devicetree/bindings/misc
parentASoC: atmel_ssc_dai: make option to choose clock (diff)
downloadlinux-a69d0009aad51e16bf294d78a3b2e4fe655cf10f.tar.xz
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Binding: atmel-ssc: add option to choose clock
Add the option to choose clock on which pin input to SSC (as slave). Default is on TK pin to SSC, add "atmel,clk-from-rk-pin" option to specify the clock is on RK pin to SSC. Signed-off-by: Bo Shen <voice.shen@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/misc')
-rw-r--r--Documentation/devicetree/bindings/misc/atmel-ssc.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/misc/atmel-ssc.txt b/Documentation/devicetree/bindings/misc/atmel-ssc.txt
index 60960b2755f4..efc98ea1f23d 100644
--- a/Documentation/devicetree/bindings/misc/atmel-ssc.txt
+++ b/Documentation/devicetree/bindings/misc/atmel-ssc.txt
@@ -17,6 +17,14 @@ Required properties for devices compatible with "atmel,at91sam9g45-ssc":
See Documentation/devicetree/bindings/dma/atmel-dma.txt for details.
- dma-names: Must be "tx", "rx".
+Optional properties:
+ - atmel,clk-from-rk-pin: bool property.
+ - When SSC works in slave mode, according to the hardware design, the
+ clock can get from TK pin, and also can get from RK pin. So, add
+ this parameter to choose where the clock from.
+ - By default the clock is from TK pin, if the clock from RK pin, this
+ property is needed.
+
Examples:
- PDC transfer:
ssc0: ssc@fffbc000 {