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Message-Id: <20241003-wip-bl-ad3552r-axi-v0-iio-testing-v4-3-ceb157487329@baylibre.com>
Date: Thu, 03 Oct 2024 19:29:00 +0200
From: Angelo Dureghello <adureghello@...libre.com>
To: Lars-Peter Clausen <lars@...afoo.de>,
Michael Hennerich <Michael.Hennerich@...log.com>,
Nuno Sa <nuno.sa@...log.com>, Jonathan Cameron <jic23@...nel.org>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Mihail Chindris <mihail.chindris@...log.com>,
Olivier Moysan <olivier.moysan@...s.st.com>
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
Jonathan Cameron <Jonathan.Cameron@...wei.com>, devicetree@...r.kernel.org,
dlechner@...libre.com, Mark Brown <broonie@...nel.org>,
Angelo Dureghello <adureghello@...libre.com>
Subject: [PATCH v4 03/11] dt-bindings: iio: dac: adi-axi-dac: add ad3552r
axi variant
From: Angelo Dureghello <adureghello@...libre.com>
Add a new compatible and related bindigns for the fpga-based
"ad3552r" AXI IP core, a variant of the generic AXI DAC IP.
The AXI "ad3552r" IP is a very similar HDL (fpga) variant of the
generic AXI "DAC" IP, intended to control ad3552r and similar chips,
mainly to reach high speed transfer rates using a QSPI DDR
(dobule-data-rate) interface.
The ad3552r device is defined as a child of the AXI DAC, that in
this case is acting as an SPI controller.
Signed-off-by: Angelo Dureghello <adureghello@...libre.com>
---
.../devicetree/bindings/iio/dac/adi,axi-dac.yaml | 49 +++++++++++++++++++++-
1 file changed, 48 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml b/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml
index a55e9bfc66d7..e15d02ef6be9 100644
--- a/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml
@@ -19,11 +19,13 @@ description: |
memory via DMA into the DAC.
https://wiki.analog.com/resources/fpga/docs/axi_dac_ip
+ https://analogdevicesinc.github.io/hdl/library/axi_ad3552r/index.html
properties:
compatible:
enum:
- adi,axi-dac-9.1.b
+ - adi,axi-ad3552r
reg:
maxItems: 1
@@ -41,13 +43,28 @@ properties:
'#io-backend-cells':
const: 0
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
required:
- compatible
- dmas
- reg
- clocks
-additionalProperties: false
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: adi,axi-ad3552r
+ then:
+ $ref: /schemas/spi/spi-controller.yaml#
+
+unevaluatedProperties: false
examples:
- |
@@ -59,4 +76,34 @@ examples:
#io-backend-cells = <0>;
clocks = <&axi_clk>;
};
+
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ axi_dac: spi@...70000 {
+ compatible = "adi,axi-ad3552r";
+ reg = <0x44a70000 0x1000>;
+ dmas = <&dac_tx_dma 0>;
+ dma-names = "tx";
+ #io-backend-cells = <0>;
+ clocks = <&axi_clk>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ dac@0 {
+ compatible = "adi,ad3552r";
+ reg = <0>;
+ reset-gpios = <&gpio0 92 GPIO_ACTIVE_HIGH>;
+ io-backends = <&axi_dac>;
+ spi-max-frequency = <66000000>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ channel@0 {
+ reg = <0>;
+ adi,output-range-microvolt = <(-10000000) (10000000)>;
+ };
+ };
+ };
...
--
2.45.0.rc1
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