[PATCH v3 3/7] Documentation: DT: update atmel SSC with DMA binding
From: Richard Genoud <hidden>
Date: 2013-07-09 13:19:33
Also in:
alsa-devel, linux-devicetree, lkml
2013/7/9 Richard Genoud [off-list ref]:
quoted hunk ↗ jump to hunk
As atmel-ssc can be used with DMA, the documentation should be updated. Also, a configuration DMA example is given. Signed-off-by: Richard Genoud <redacted> --- .../devicetree/bindings/misc/atmel-ssc.txt | 24 ++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-)diff --git a/Documentation/devicetree/bindings/misc/atmel-ssc.txt b/Documentation/devicetree/bindings/misc/atmel-ssc.txt index 38e51ad..96958ca 100644 --- a/Documentation/devicetree/bindings/misc/atmel-ssc.txt +++ b/Documentation/devicetree/bindings/misc/atmel-ssc.txt@@ -6,10 +6,30 @@ Required properties: - atmel,at91sam9g45-ssc: support dma transfer - reg: Should contain SSC registers location and length - interrupts: Should contain SSC interrupt +For dma transfer: +- dmas: DMA specifier, consisting of a phandle to DMA controller node, + the memory interface and SSC DMA channel ID (for tx and rx). + See Documentation/devicetree/bindings/dma/atmel-dma.txt for details. +- dma-names: Must be "tx", "rx". -Example: + +Examples: ssc0: ssc at fffbc000 { compatible = "atmel,at91rm9200-ssc"; reg = <0xfffbc000 0x4000>; - interrupts = <14 4 5>; + interrupts = <14 IRQ_TYPE_LEVEL_HIGH 5>;
maybe I should not use macro in the documentation (not sure if I should or not).
};
+
+
+ssc0: ssc at f0010000 {
+ compatible = "atmel,at91sam9g45-ssc";
+ reg = <0xf0010000 0x4000>;
+ interrupts = <28 IRQ_TYPE_LEVEL_HIGH 5>;
+ dmas = <&dma0 1 AT91_DMA_CFG_PER_ID(13)>,
+ <&dma0 1 AT91_DMA_CFG_PER_ID(14)>;same here
+ dma-names = "tx", "rx"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_ssc0_tx &pinctrl_ssc0_rx>; + status = "disabled"; +}; + -- 1.7.10.4
-- for me, ck means con kolivas and not calvin klein... does it mean I'm a geek ?