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charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAFLxzGkC/23M0Q6CIBiG4VtxHEeDH1HsqPtorYE/KltJg8Zqz nsPPSlXh++3Pd9Eog3ORnIoJhJsctH5MUe5K0g76LG31GFuAgwqBsAo2nTRKGtWBQqcScsRodG GZHEPtnPP9e10zj24+PDhtZ4nvqz/fxKnjNYghTFYl0o1Rz3qq+/3rb+R5SjBBwvOtxgy7kSVQ 6BBbn6w+MZqi0XGElmtupLbRqkNnuf5DWHUOLkhAQAA X-Change-ID: 20260220-dev_ad5706r-2105e1dd29ab To: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: , , , Alexis Czezar Torreno X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1775038815; l=3755; i=alexisczezar.torreno@analog.com; s=20250213; h=from:subject:message-id; bh=rL2BBdeGhEFPwW5y9Fql3xtCPb3d+vujyjq7lCm1vq8=; b=NQz7nPJ3VO7d1FJW6/2nNhDAgRGvMmPztO6Y5HQ9RjE8uIBfs9Z1a0MttS/0ABRRbO3P4x0dN SXLHqS30S4qBX2TmsLZTjaHiBgQEGQGBDSM2LNO6TDWVhUfEVdCoNwX X-Developer-Key: i=alexisczezar.torreno@analog.com; a=ed25519; pk=XpXmJnRjnsKdDil6YpOlj9+44S+XYXVFnxvkbmaZ+10= X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-ORIG-GUID: iDFppdwaMvmDHTS132TFoD2RUuNX7jsT X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDAxMDA5NCBTYWx0ZWRfX8hVYgxabZkIb lw6FDmvX+VjwGT9SaIkbt9BiRcKLLBCgHAUoQCziXFRWvwi9gKmX9Sad8Xun2deJoM9l/63lehl CRo6d8FqML5cyFWjNvxY9TkWUr3QK9k5HhVVTvQvUCpKwDwex+BF+uGyhglzt7OYSXMJlp9wsI6 lYzwdeiuS16F/z/kA/+2zWE7W9C4jtThL+YakGR8uBxCaYUSzBZsxqgTYNPoNgfJAFiZmwn9R28 wUIrNiXo9sEWRf6SIy2G74a4YQOROfjn47t9etDfTKAldZgdUqDXJmQ3kxOxcKu9L24L6PDy24r 1JCHJEQrzMPU5Hs7/Gox4SdGtGKJqt+4DSzmzP+t1fRA8oEa3WyBYh5FGR5/irEVrM1Bihx+24U /WWmEcRH0isdMumlSixKjOe1Y2I807y5WtWoe2XqZb35pSW+pWdshPFaDVR8EOLT7m8JpYQgibQ zQsRMUhfi0DkZv81nfg== X-Proofpoint-GUID: iDFppdwaMvmDHTS132TFoD2RUuNX7jsT X-Authority-Analysis: v=2.4 cv=N88k1m9B c=1 sm=1 tr=0 ts=69ccf16e cx=c_pps a=3WNzaoukacrqR9RwcOSAdA==:117 a=3WNzaoukacrqR9RwcOSAdA==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=0sLvza09kfJOxVLZPwjg:22 a=OmVn7CZJonkx5R5zMQLL:22 a=gAnH3GRIAAAA:8 a=VwQbUJbxAAAA:8 a=XJZcrK31PTXhNydwGfQA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-01_03,2026-04-01_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 phishscore=0 adultscore=0 malwarescore=0 lowpriorityscore=0 clxscore=1015 suspectscore=0 bulkscore=0 priorityscore=1501 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2604010094 This series adds support for the Analog Devices AD5706R, a 4-channel 16-bit current output digital-to-analog converter with SPI interface. The AD5706R features: - 4 independent current output DAC channels - Configurable output ranges (50mA, 150mA, 200mA, 300mA) - Hardware and software LDAC trigger with configurable edge selection - Toggle and dither modes per channel - Internal or external voltage reference selection - PWM-controlled LDAC - Dynamic change SPI speed The driver exposes standard IIO raw/scale/offset channel attributes for DAC output control, sampling frequency for PWM-based LDAC timing, and extended attributes for device configuration including output range selection, trigger mode, and multiplexer output. This driver is developed and tested on the Cora Z7S platform using the AXI SPI Engine and AXI CLKGEN IP cores. The 'clocks' property enables dynamic SPI clock rate management via the CLKGEN. Datasheet: https://www.analog.com/en/products/ad5706r.html Signed-off-by: Alexis Czezar Torreno --- Changes in v4: - dt-bindings: - Reverted pwm and gpio entries. - Added missing power supply properties - Clocks not added back as they were driver specific, not device properties - driver: - Added missing includes - Converted to use regmap with custom SPI bus implementation. spi_write_then_read not applied as suggested, prevents future need to change SPI speed - removed driver speciifc mutex/guards in favor of regmap internal locking - Minor style cleanups - Link to v3: https://lore.kernel.org/r/20260318-dev_ad5706r-v3-0-5d078f41e988@analog.com Changes in v3: - Added MAINTAINERS entry, files added on each patch - dt-bindings: - Added allOf and ref to spi-peripheral-props.yaml - Changed additionalProperties to unevaluatedProperties - Added avdd-supply property and added it to required - driver: - Removed redundant includes, added respective includes of APIs used - Simplified bit manipulation in SPI read/write, used feedback from v2 - Fixed inconsistent trailing commas in device ID tables - Removed zero initialization in spi_device_id - Link to v2: https://lore.kernel.org/r/20260311-dev_ad5706r-v2-0-f367063dbd1b@analog.com Changes in v2: - Stripped driver down to basic DAC functionality (read/write raw, read-only scale) as suggested. - Removed PWM (LDAC), GPIO (reset/shutdown), clock generator, SPI engine frequency switching, debugfs streaming, and all custom ext_info sysfs attributes - Removed regmap, IIO_BUFFER, and iio/sysfs.h dependencies - Simplified SPI read/write to use standard spi_sync_transfer without clock mode logic - Scale reports default 50mA range as read-only using IIO_VAL_FRACTIONAL_LOG2; writable range selection deferred to future follow-up series - Simplified DT binding to only require compatible, reg, and spi-max-frequency - Link to v1: https://lore.kernel.org/r/20260220-dev_ad5706r-v1-0-7253bbd74889@analog.com --- Alexis Czezar Torreno (2): dt-bindings: iio: dac: Add ADI AD5706R iio: dac: ad5706r: Add support for AD5706R DAC .../devicetree/bindings/iio/dac/adi,ad5706r.yaml | 105 +++++++++ MAINTAINERS | 8 + drivers/iio/dac/Kconfig | 10 + drivers/iio/dac/Makefile | 1 + drivers/iio/dac/ad5706r.c | 244 +++++++++++++++++++++ 5 files changed, 368 insertions(+) --- base-commit: 3674f3ca92730d9a07b42b311f1337d83c4d5605 change-id: 20260220-dev_ad5706r-2105e1dd29ab Best regards, -- Alexis Czezar Torreno