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Tue, 22 Sep 2026 20:33:34 -0400 From: Jan Carlo Roleda To: Lee Jones , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , , , CC: Krzysztof Kozlowski Subject: [PATCH RESEND v13 1/2] dt-bindings: leds: Document LTC3208 Multidisplay LED Driver Date: Wed, 23 Sep 2026 08:33:23 +0800 Message-ID: <20260923003325.61722-2-jancarlo.roleda@analog.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260923003325.61722-1-jancarlo.roleda@analog.com> References: <20260911-upstream-ltc3208-v12-0-9107f5f0a7b0@analog.com> <20260923003325.61722-1-jancarlo.roleda@analog.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTIzMDAwMSBTYWx0ZWRfX31TNhpJ44Hft nRJXebWDvRSSEGB4O3L+Zu9shWA9njmDTmltBvliL01YqP5YnGaJPPQpMpe7KOtLWUAQGcaaz5P U0bnPx8ueTx1XVlOdJ3AOquIy1ppgaOdN+ZaqFdE3iGXZ4Hy+gGUWXM3HpjKDGnqIN0SOersMre u93H/V6ALE38gytECHCexbiCKXBNchbOGmXFn9JpY3LlCKyZtSU5j//VUCPboQ73LI6C0fGLgfz o/qF3lQud3IzUz4CKiUD1YeuEYATAulaqMTN0NPtkXr76n1SgEpr4hm6f6kzu9SXGdus9U2dKdA neI/BAA2vFLTw16XqL77Yp07YIKFhIRey4mjL1L1YE8Ce2YZqq4DeJq+nRVQ+jM67pL4UTVvo90 TE631WXISCgbn/t5EmJGycUuWqcjOeBeGleKWkJvwTogojsYLZJ0Ryvx+Kx1vsSOJoqkwB+lhVf xRU/ZONSHJaB4dNBuAw== X-Proofpoint-ORIG-GUID: GbbJtc3SZF63WqV2i2q9l_2HC01DbQBP X-Proofpoint-GUID: GbbJtc3SZF63WqV2i2q9l_2HC01DbQBP X-Authority-Analysis: v=2.4 cv=G5OJgNk5 c=1 sm=1 tr=0 ts=6ab31e65 cx=c_pps a=3WNzaoukacrqR9RwcOSAdA==:117 a=3WNzaoukacrqR9RwcOSAdA==:17 a=VdqzKS8jKosA:10 a=VkNPw1HP01LnGYTKEx00:22 a=0sLvza09kfJOxVLZPwjg:22 a=OmVn7CZJonkx5R5zMQLL:22 a=gEfo2CItAAAA:8 a=gAnH3GRIAAAA:8 a=EUspDBNiAAAA:8 a=VwQbUJbxAAAA:8 a=v2smZY1xhbZLdnYpqY8A:9 a=sptkURWiP4Gy88Gu7hUp:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwOTIzMDAwMSBTYWx0ZWRfX9RYtUmehdsuE kCv4mlSxdmetO0cQo0aXVipExTA22w+YS0bjH3vfZtZLwJkanfdXdc/e++GumUb+v6v8M9TemFz i73ucGSSk1vKherv9vXoG1Pn808uTLShQMOFbvXBSnwp+xfY1CyP X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-22_03,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 phishscore=0 clxscore=1015 lowpriorityscore=0 priorityscore=1501 malwarescore=0 bulkscore=0 adultscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609230001 Add Devicetree Documentation for LTC3208 Multidisplay LED Driver. Signed-off-by: Jan Carlo Roleda Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/leds/adi,ltc3208.yaml | 183 ++++++++++++++++++ MAINTAINERS | 7 + 2 files changed, 190 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/adi,ltc3208.yaml diff --git a/Documentation/devicetree/bindings/leds/adi,ltc3208.yaml b/Documentation/devicetree/bindings/leds/adi,ltc3208.yaml new file mode 100644 index 0000000000000..c6697816b7d98 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/adi,ltc3208.yaml @@ -0,0 +1,183 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (c) 2026 Analog Devices, Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/adi,ltc3208.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: LTC3208 Multidisplay LED Controller from Linear Technologies (Now Analog Devices) + +maintainers: + - Jan Carlo Roleda + +description: + The LTC3208 is a multidisplay LED controller that can support up to 1A to all + connected LEDs. + + The datasheet for this device can be found in + https://www.analog.com/en/products/ltc3208.html + +properties: + compatible: + const: adi,ltc3208 + + reg: + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + + adi,disable-camhl-pin: + type: boolean + description: + Configures whether the external CAMHL pin is disabled. + If disabled then the output pins associated with CAM will always select + the CAM register's high half-byte brightness. + + adi,cfg-enrgbs-pin: + type: boolean + description: + Configures which channel the ENRGBS pin toggles when it receives a signal. + ENRGBS pin controls the SUB channel's output pins if this is set, + or RGB channel's output pins if this is unset. + + adi,disable-rgb-aux4-dropout: + type: boolean + description: + Configures the RGB and AUX4 dropout signals to be disabled. + + adi,aux1-channel: + $ref: /schemas/types.yaml#/definitions/string + description: + LED Channel that the AUX1 output pin mirrors its brightness level from. + enum: [aux, main, sub, cam] + default: aux + + adi,aux2-channel: + $ref: /schemas/types.yaml#/definitions/string + description: + LED Channel that the AUX2 output pin mirrors its brightness level from. + enum: [aux, main, sub, cam] + default: aux + + adi,aux3-channel: + $ref: /schemas/types.yaml#/definitions/string + description: + LED Channel that the AUX3 output pin mirrors its brightness level from. + enum: [aux, main, sub, cam] + default: aux + + adi,aux4-channel: + $ref: /schemas/types.yaml#/definitions/string + description: + LED Channel that the AUX4 output pin mirrors its brightness level from. + enum: [aux, main, sub, cam] + default: aux + +patternProperties: + "^led@[0-7]$": + type: object + $ref: /schemas/leds/common.yaml# + unevaluatedProperties: false + properties: + reg: + description: + LED Channel Number. each channel maps to a specific channel group used + to configure the brightness level of the output pins corresponding to + the channel. + enum: + - 0 # Main Channel (8-bit brightness) + - 1 # Sub Channel (8-bit brightness) + - 2 # AUX Channel (4-bit brightness) + - 3 # Camera Channel, Low-side byte (4-bit brightness) + - 4 # Camera Channel, High-side byte (4-bit brightness) + - 5 # Red Channel (4-bit brightness) + - 6 # Blue Channel (4-bit brightness) + - 7 # Green Channel (4-bit brightness) + required: + - reg + +required: + - compatible + - reg + - "#address-cells" + - "#size-cells" + +additionalProperties: false + +examples: + - | + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + led-controller@1b { + compatible = "adi,ltc3208"; + reg = <0x1b>; + #address-cells = <1>; + #size-cells = <0>; + adi,disable-camhl-pin; + adi,cfg-enrgbs-pin; + adi,disable-rgb-aux4-dropout; + + /* MAIN */ + led@0 { + reg = <0>; + function = LED_FUNCTION_ACTIVITY; + color = ; + }; + + /* SUB */ + led@1 { + reg = <1>; + function = LED_FUNCTION_ACTIVITY; + color = ; + }; + + /* AUX */ + led@2 { + reg = <2>; + function = LED_FUNCTION_ACTIVITY; + color = ; + }; + + /* CAMLO */ + led@3 { + reg = <3>; + function = LED_FUNCTION_FLASH; + color = ; + }; + + /* CAMHI */ + led@4 { + reg = <4>; + function = LED_FUNCTION_FLASH; + color = ; + }; + + /* RED */ + led@5 { + reg = <5>; + function = LED_FUNCTION_INDICATOR; + color = ; + }; + + /* BLUE */ + led@6 { + reg = <6>; + function = LED_FUNCTION_INDICATOR; + color = ; + }; + + /* GREEN */ + led@7 { + reg = <7>; + function = LED_FUNCTION_INDICATOR; + color = ; + }; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 3a19da74d00c9..c422939a82694 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -15527,6 +15527,13 @@ W: https://ez.analog.com/linux-software-drivers F: Documentation/devicetree/bindings/iio/temperature/adi,ltc2983.yaml F: drivers/iio/temperature/ltc2983.c +LTC3208 LED DRIVER +M: Jan Carlo Roleda +L: linux-leds@vger.kernel.org +S: Maintained +W: https://ez.analog.com/linux-software-drivers +F: Documentation/devicetree/bindings/leds/adi,ltc3208.yaml + LTC3220 LED DRIVER M: Edelweise Escala L: linux-leds@vger.kernel.org -- 2.43.0