Re: [PATCH 02/10] dt-bindings: iio: adc: at91-sama5d2: add rtc-trigger optional property
From: Jonathan Cameron <jic23@kernel.org>
Date: 2019-12-23 11:58:54
Also in:
linux-devicetree, linux-iio, linux-rtc, lkml
On Wed, 18 Dec 2019 16:23:58 +0000 [off-list ref] wrote:
From: Eugen Hristev <redacted> Add property to connect RTC-type trigger to the ADC block. The ADC is connected internally with a line to the RTC block. The RTC can provide a trigger signal to the ADC to start conversions. Signed-off-by: Eugen Hristev <redacted>
As discussed, might want to just be the rtc handle rather than a new trigger one.
quoted hunk ↗ jump to hunk
--- Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt | 4 ++++ 1 file changed, 4 insertions(+)diff --git a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt index 4a3c1d4..1980f0e 100644 --- a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt +++ b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt@@ -23,6 +23,9 @@ Optional properties: See ../../dma/dma.txt for details. - #io-channel-cells: in case consumer drivers are attached, this must be 1. See <Documentation/devicetree/bindings/iio/iio-bindings.txt> for details. + - atmel,rtc-trigger: The ADC IP block can be triggered by the RTC block +inside the SoC. This property is a phandle to a node that provides a +trigger device, if the ADC block supports it.
Do we want to be more specific on devices that do support it? Maybe it's enough of a complex mess that we don't.
quoted hunk ↗ jump to hunk
Properties for consumer drivers: - Consumer drivers can be connected to this producer device, as specified@@ -44,6 +47,7 @@ adc: adc@fc030000 { vddana-supply = <&vdd_3v3_lp_reg>; vref-supply = <&vdd_3v3_lp_reg>; atmel,trigger-edge-type = <IRQ_TYPE_EDGE_BOTH>; + atmel,rtc-trigger = <&rtc_adc_trigger>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(25))>; dma-names = "rx"; #io-channel-cells = <1>;
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