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Fri, 23 Jan 2026 09:58:24 -0500 From: Antoniu Miclaus To: Peter Rosin , Rob Herring , "Krzysztof Kozlowski" , Conor Dooley , "Srinivas Kandagatla" , Antoniu Miclaus , Johan Hovold , Bartosz Golaszewski , David Lechner , , Subject: [PATCH v5 0/2] mux: gpio-mux: add enable GPIO support Date: Fri, 23 Jan 2026 16:57:30 +0200 Message-ID: <20260123145743.75705-1-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@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-GUID: FmJWUdrr8b49dM7OYUAXWxjDhZxipvyD X-Proofpoint-ORIG-GUID: FmJWUdrr8b49dM7OYUAXWxjDhZxipvyD X-Authority-Analysis: v=2.4 cv=JuL8bc4C c=1 sm=1 tr=0 ts=69738c9d cx=c_pps a=3WNzaoukacrqR9RwcOSAdA==:117 a=3WNzaoukacrqR9RwcOSAdA==:17 a=vUbySO9Y5rIA:10 a=VkNPw1HP01LnGYTKEx00:22 a=HapAHONEMoC6MvEP3oEA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTIzMDExOCBTYWx0ZWRfX4th2zSKIAK/d MfAk/dv8GeKu4YR1Xj5sgBuPOs7KoAoWOSO1ti7APJo79OUfuC6V8iJrbGW/UmOQa12N9EECcRN cIXEqGYAAhCE5PKQCAyuIrRwUumAVMtr9kN9G91PGH0kMzxw6nwvBNZNwBhRCMcGvIKaEdFyovX mN+ZcliyxgJFCbt06i6ev+e4c5njUkYx8VPstZJIE24IICpLYE+csve8w3LhROToGU3EJRoPvJ/ TwdxFj1Hu+PhAsU0NgYUPYaT+3mVvhr2KBs0azhX4fRDy5GGwAYp7OqUxlobSfaSTHTuElCG9YO MGPi/BlyLDlQa0l8/2UkF6wEfdHFPPntmqdOy7ul/i/N2LqFJjR3GTIJrP+E+NNDPC1nJGqYT2I x9orRQVhiWhQXviDI1O+vgU0616PWUFgcHjCvGI8X6aUQExOZYyjS1u1ZTxkrncRSl9PHEPfWET VW+bfHfS5huiCK8a/nw== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.20,FMLib:17.12.100.49 definitions=2026-01-23_02,2026-01-22_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 priorityscore=1501 malwarescore=0 clxscore=1015 lowpriorityscore=0 adultscore=0 spamscore=0 bulkscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2601230118 This series adds optional enable GPIO support to the gpio-mux driver. The enable GPIO allows the multiplexer to be disabled before changing address lines and re-enabled after, preventing glitches that could briefly activate unintended channels during transitions. This feature is useful for devices like the Analog Devices ADG2404 (4:1 mux) that require enable control for glitch-free operation. The binding documentation now includes ADG2404 as a supported device with a dedicated example. Changes in v5: - dt-bindings: Expand enable-gpios description to explain high-impedance (high-Z) behavior and analog signal considerations - dt-bindings: Remove separate ADG2404 example, add enable-gpios to existing example instead - driver: Enhance code comment to explain high-Z state and downstream capacitance for analog multiplexers Antoniu Miclaus (2): dt-bindings: mux: gpio-mux: add enable-gpios support mux: gpio-mux: add support for enable GPIO .../devicetree/bindings/mux/gpio-mux.yaml | 16 +++++++++ drivers/mux/gpio.c | 35 ++++++++++++++++++- 2 files changed, 50 insertions(+), 1 deletion(-) -- 2.43.0