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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-ID: <20250421-togreg-v5-2-94341574240f@analog.com> References: <20250421-togreg-v5-0-94341574240f@analog.com> In-Reply-To: <20250421-togreg-v5-0-94341574240f@analog.com> To: Jonathan Cameron , Lars-Peter Clausen , Michael Hennerich , Rob Herring , Krzysztof Kozlowski , Conor Dooley , David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko CC: , , , Kim Seer Paller , Krzysztof Kozlowski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1745209504; l=4981; i=kimseer.paller@analog.com; s=20250213; h=from:subject:message-id; bh=iWjl6l/so/q4SkT0NIpF43RFCXqWNXX4a/8xgOMrJ8Y=; b=glBguZCWx0YZXViWhfv5WoQZcXahs8B5QxBadfnb+v1jakrc0Kl1k/wcR3G0zM+Lz455vXmRd hiI1SPoVKr4AjukybGzbBK8yTtFQ/0EVI46ZOfxeDRvHAFuXGTSMABq X-Developer-Key: i=kimseer.paller@analog.com; a=ed25519; pk=SPXIwGLg4GFKUNfuAavY+YhSDsx+Q+NwGLceiKwm8Ac= X-ADIRuleOP-NewSCL: Rule Triggered X-Authority-Analysis: v=2.4 cv=D4VHKuRj c=1 sm=1 tr=0 ts=6805c8c0 cx=c_pps a=3WNzaoukacrqR9RwcOSAdA==:117 a=3WNzaoukacrqR9RwcOSAdA==:17 a=IkcTkHD0fZMA:10 a=XR8D0OoHHMoA:10 a=gEfo2CItAAAA:8 a=gAnH3GRIAAAA:8 a=KKAkSRfTAAAA:8 a=IpJZQVW2AAAA:8 a=VwQbUJbxAAAA:8 a=Mm4sZ1b9CvxOHCGzALoA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=sptkURWiP4Gy88Gu7hUp:22 a=cvBusfyB2V15izCimMoJ:22 a=IawgGOuG5U0WyFbmm1f5:22 X-Proofpoint-GUID: PlMj7A_MEyZcv74M8Hq8VJKfq9hKS1b- X-Proofpoint-ORIG-GUID: PlMj7A_MEyZcv74M8Hq8VJKfq9hKS1b- X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1095,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-04-21_02,2025-04-17_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 impostorscore=0 suspectscore=0 spamscore=0 clxscore=1011 priorityscore=1501 adultscore=0 mlxlogscore=999 bulkscore=0 mlxscore=0 lowpriorityscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2504210031 Document the AD3530/AD3530R (8-channel) and AD3531/AD3531R (4-channel) low-power, 16-bit, buffered voltage output DACs with software- programmable gain controls. They provide full-scale output spans of 2.5V or 5V for reference voltages of 2.5V. These devices operate on a single 2.7V to 5.5V supply and are guaranteed to be monotonic by design. The "R" variants include a 2.5V, 5ppm/=C2=B0C internal reference, which is disabled by default. Reviewed-by: Krzysztof Kozlowski Reviewed-by: David Lechner Signed-off-by: Kim Seer Paller --- .../devicetree/bindings/iio/dac/adi,ad3530r.yaml | 100 +++++++++++++++++= ++++ MAINTAINERS | 7 ++ 2 files changed, 107 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml b/D= ocumentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml new file mode 100644 index 0000000000000000000000000000000000000000..a355d52a9d641e488fe291b97bc= 95ed115e96afd --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml @@ -0,0 +1,100 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/dac/adi,ad3530r.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD3530R and Similar DACs + +maintainers: + - Kim Seer Paller + +description: | + The AD3530/AD3530R (8-channel) and AD3531/AD3531R (4-channel) are low-po= wer, + 16-bit, buffered voltage output digital-to-analog converters (DACs) with + software-programmable gain controls, providing full-scale output spans o= f 2.5V + or 5V for reference voltages of 2.5V. These devices operate from a singl= e 2.7V + to 5.5V supply and are guaranteed monotonic by design. The "R" variants + include a 2.5V, 5ppm/=C2=B0C internal reference, which is disabled by de= fault. + Datasheet can be found here: + https://www.analog.com/media/en/technical-documentation/data-sheets/ad35= 30_ad530r.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/ad35= 31-ad3531r.pdf + +properties: + compatible: + enum: + - adi,ad3530 + - adi,ad3530r + - adi,ad3531 + - adi,ad3531r + + reg: + maxItems: 1 + + spi-max-frequency: + maximum: 50000000 + + vdd-supply: + description: Power Supply Input. + + iovdd-supply: + description: Digital Power Supply Input. + + io-channels: + description: + ADC channel used to monitor internal die temperature, output voltage= s, and + current of a selected channel via the MUXOUT pin. + maxItems: 1 + + ref-supply: + description: + Reference Input/Output. The voltage at the REF pin sets the full-sca= le + range of all channels. If not provided the internal reference is use= d and + also provided on the VREF pin. + + reset-gpios: + description: + Active low signal that is falling edge sensitive. When it is deasser= ted, + the digital core initialization is performed and all DAC registers e= xcept + the Interface Configuration A register are reset to their default va= lues. + maxItems: 1 + + ldac-gpios: + description: + LDAC pin to be used as a hardware trigger to update the DAC channels= . If + not present, the DAC channels are updated by Software LDAC. + maxItems: 1 + + adi,range-double: + description: + Configure the output range for all channels. If the property is pres= ent, + the output will range from 0V to 2Vref. If the property is not prese= nt, + the output will range from 0V to Vref. + type: boolean + +required: + - compatible + - reg + - vdd-supply + - iovdd-supply + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + +examples: + - | + spi { + #address-cells =3D <1>; + #size-cells =3D <0>; + dac@0 { + compatible =3D "adi,ad3530r"; + reg =3D <0>; + spi-max-frequency =3D <1000000>; + + vdd-supply =3D <&vdd>; + iovdd-supply =3D <&iovdd>; + }; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index 01079a189c93697c1db6b0ca4e54212d25589974..4ca59fc1bf25aa49fecf78a90b2= e1b73f25a2c05 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1300,6 +1300,13 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git= /netdev/net.git T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git F: drivers/net/amt.c =20 +ANALOG DEVICES INC AD3530R DRIVER +M: Kim Seer Paller +L: linux-iio@vger.kernel.org +S: Supported +W: https://ez.analog.com/linux-software-drivers +F: Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml + ANALOG DEVICES INC AD3552R DRIVER M: Nuno S=C3=A1 L: linux-iio@vger.kernel.org --=20 2.34.1