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Message-Id: <20241121-ad7606_add_iio_backend_software_mode-v1-2-8a693a5e3fa9@baylibre.com>
Date: Thu, 21 Nov 2024 10:18:24 +0000
From: Guillaume Stols <gstols@...libre.com>
To: Lars-Peter Clausen <lars@...afoo.de>,
Michael Hennerich <Michael.Hennerich@...log.com>,
Jonathan Cameron <jic23@...nel.org>, Nuno Sa <nuno.sa@...log.com>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>,
linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
Michael Hennerich <michael.hennerich@...log.com>,
devicetree@...r.kernel.org, dlechner@...libre.com, jstephan@...libre.com,
aardelean@...libre.com, adureghello@...libre.com,
Guillaume Stols <gstols@...libre.com>
Subject: [PATCH 2/9] dt-bindings: iio: dac: adi-axi-adc: Add ad7606 variant
A new compatible is added to reflect the specialized version of the HDL
that is not covered by the IIO backend paradigm: We use the parallel
interface to write the ADC's registers, and accessing this interface
requires to use ADI_AXI_REG_CONFIG_RD,ADI_AXI_REG_CONFIG_WR and
ADI_AXI_REG_CONFIG_CTRL in a custom fashion.
Signed-off-by: Guillaume Stols <gstols@...libre.com>
---
Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml b/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
index e1f450b80db2..43bc0440c678 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
@@ -17,13 +17,20 @@ description: |
interface for the actual ADC, while this IP core will interface
to the data-lines of the ADC and handle the streaming of data into
memory via DMA.
+ In some cases, the AXI ADC interface is used to perform specialized
+ operation to a particular ADC, e.g access the physical bus through
+ some special register to write ADC registers.
+ In this case, a different compatible is used, and the driver behaves
+ slightly differently according to the special needs.
https://wiki.analog.com/resources/fpga/docs/axi_adc_ip
+ http://analogdevicesinc.github.io/hdl/library/axi_ad7606x/index.html
properties:
compatible:
enum:
- adi,axi-adc-10.0.a
+ - adi,axi-ad7606x
reg:
maxItems: 1
--
2.34.1
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