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Add support for ADA4355 #2806

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2f892c4
arch: arm: boot: dts: Add devicetree for ADA4355
PIoandan May 29, 2025
9d629c9
iio: Kconfig.adi: imply ADA4355
PIoandan May 29, 2025
d407bb1
iio: adc: ada4355: Add support for ADA4355
PIoandan May 29, 2025
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99 changes: 99 additions & 0 deletions arch/arm/boot/dts/xilinx/zynq-zed-adv7511-ada4355.dts
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Original file line number Diff line number Diff line change
@@ -0,0 +1,99 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Analog Devices ada4355
*
* hdl_project: <ada4355_fmc/zed>
* board_revision: <>
*
* Copyright (C) 2025 Analog Devices Inc.
*/
/dts-v1/;

#include <dt-bindings/gpio/gpio.h>

#include "zynq-zed.dtsi"
#include "zynq-zed-adv7511.dtsi"

&fpga_axi {
rx_dma: rx-dmac@44a30000 {
compatible = "adi,axi-dmac-1.00.a";
reg = <0x44A30000 0x10000>;
#dma-cells = <1>;
interrupts = <0 57 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clkc 16>;

adi,channels {
#size-cells = <0>;
#address-cells = <1>;

dma-channel@0 {
reg = <0>;
adi,source-bus-width = <32>;
adi,source-bus-type = <2>;
adi,destination-bus-width = <64>;
adi,destination-bus-type = <0>;
};
};
};

ada4355: ada4355@44a00000 {
compatible = "adi,axi-adc-10.0.a";
reg = <0x44A00000 0x10000>;
dmas = <&rx_dma 0>;
dma-names = "rx";

spibus-connected = <&adc_ada4355>;
};
};

&spi0 {
status = "okay";
};

#define fmc_spi spi0

/ {
ada4355_fixed_clock: ada4355_fixed_clock{
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <125000000>;
};

gpio-control@0 {
compatible = "adi,one-bit-adc-dac";
#address-cells = <1>;
#size-cells = <0>;
out-gpios = <&gpio0 86 GPIO_ACTIVE_HIGH>,
<&gpio0 87 GPIO_ACTIVE_HIGH>,
<&gpio0 88 GPIO_ACTIVE_HIGH>;

channel@0 {
reg = <0>;
label = "GSEL0";
};
channel@1 {
reg = <1>;
label = "GSEL1";
};
channel@2 {
reg = <2>;
label = "FSEL";
};
};
};

&fmc_spi {

adc_ada4355: adc_ada4355@0 {
compatible = "adi,ada4355";
reg = <0>;
spi-max-frequency = <100000>;
gpio-1p8vd-en-gpios = <&gpio0 89 GPIO_ACTIVE_HIGH>;

clocks = <&ada4355_fixed_clock>;
clock-names = "adc_clk";
num_lanes = <2>;
spi-cpol;
spi-cpha;
};
};
1 change: 1 addition & 0 deletions drivers/iio/Kconfig.adi
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Original file line number Diff line number Diff line change
@@ -1,3 +1,3 @@

# This file exists solely to be include in Kconfig.adi
# It's a bit of hurry-ed-up job; many symbols need to be depended
Expand Down Expand Up @@ -91,6 +91,7 @@
imply LTC2387
imply AD8366
imply ADA4250
imply ADA4355
imply HMC425
imply AD5270
imply AD5360
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12 changes: 12 additions & 0 deletions drivers/iio/adc/Kconfig
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Expand Up @@ -461,6 +461,18 @@ config ADAQ8092
To compile this driver as a module, choose M here: the
module will be called adaq8092.


config ADA4355
tristate "Analog Devices ADA4355 uModule Data Acquisition Module"
depends on SPI
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@gastmaier gastmaier May 30, 2025 •
edited
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edit: my comment looks into why it was lacking symbols, nuno suggestion is the correct solution.

Suggested change
depends on SPI
depends on SPI
depends on CF_AXI_ADC

The driver uses axiadc_write and axiadc_read, exported from cf_axi_adc_core.c, enabled with CF_AXI_ADC.
So the driver depends on this symbol as well.
Without this change, it cannot be compiled as a module without blindly enabling symbols.
This is an issue in other drivers.

For curiosity, we have now a script that resolves the tree of depends in the KConfig based on a target:

$ python3 ci/symbols_depend.py drivers/iio/adc/ada4355.o
Symbols of touched files:
{'ADA4355'}
Resolved symbols:
{'PCI', 'IIO_BUFFER', 'HAS_IOMEM', 'HAVE_PCI', 'ADA4355', 'SPI', 'IIO'}

as committed, it lacks the CF_AXI_ADC symbol.

depends on CF_AXI_ADC
select REGMAP_SPI
help
Say yes here to build support for Analog Devices ADA4355
14-bit, 125MSPS, high-speed dual-channel analog to digital
converters (ADC) that realize a complete current to bits data
acquisition solution. Provides direct access via sysfs.

config ADM1177
tristate "Analog Devices ADM1177 Digital Power Monitor driver"
depends on I2C
Expand Down
1 change: 1 addition & 0 deletions drivers/iio/adc/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,7 @@ obj-$(CONFIG_AD799X) += ad799x.o
obj-$(CONFIG_ADI_AXI_ADC) += adi-axi-adc.o
obj-$(CONFIG_AD9963) += ad9963.o
obj-$(CONFIG_ADAQ8092) += adaq8092.o
obj-$(CONFIG_ADA4355) += ada4355.o
obj-$(CONFIG_ADM1177) += adm1177.o

cf_axi_adc-y := cf_axi_adc_core.o
Expand Down
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