{"id":2225662,"url":"http://patchwork.ozlabs.org/api/patches/2225662/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-i2c/patch/20260421-add-mcu-fan-khadas-vim4-v4-1-447114a28f2d@aliel.fr/","project":{"id":35,"url":"http://patchwork.ozlabs.org/api/projects/35/?format=json","name":"Linux I2C development","link_name":"linux-i2c","list_id":"linux-i2c.vger.kernel.org","list_email":"linux-i2c@vger.kernel.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260421-add-mcu-fan-khadas-vim4-v4-1-447114a28f2d@aliel.fr>","list_archive_url":null,"date":"2026-04-21T11:49:18","name":"[v4,1/8] dt-bindings: mfd: khadas: Add new compatible for Khadas VIM4 MCU","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"e1222e3d7099503b1283f7e3ff49609c1f55c611","submitter":{"id":93204,"url":"http://patchwork.ozlabs.org/api/people/93204/?format=json","name":"Ronald Claveau via B4 Relay","email":"devnull+linux-kernel-dev.aliel.fr@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-i2c/patch/20260421-add-mcu-fan-khadas-vim4-v4-1-447114a28f2d@aliel.fr/mbox/","series":[{"id":500785,"url":"http://patchwork.ozlabs.org/api/series/500785/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-i2c/list/?series=500785","date":"2026-04-21T11:49:19","name":"Add VIM4 MCU/FAN support","version":4,"mbox":"http://patchwork.ozlabs.org/series/500785/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2225662/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2225662/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-i2c@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=V4Qpeh8A;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","Message-Id":"<20260421-add-mcu-fan-khadas-vim4-v4-1-447114a28f2d@aliel.fr>","References":"<20260421-add-mcu-fan-khadas-vim4-v4-0-447114a28f2d@aliel.fr>","In-Reply-To":"<20260421-add-mcu-fan-khadas-vim4-v4-0-447114a28f2d@aliel.fr>","To":"Neil Armstrong , Lee Jones ,\n Rob Herring , Krzysztof Kozlowski ,\n Conor Dooley , Andi Shyti ,\n Kevin Hilman , Jerome Brunet ,\n Martin Blumenstingl ,\n Beniamino Galvani ,\n \"Rafael J. Wysocki\" ,\n Daniel Lezcano , Zhang Rui ,\n Lukasz Luba , Liam Girdwood ,\n Mark Brown ","Cc":"linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org,\n linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org,\n linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org,\n Ronald Claveau ","X-Mailer":"b4 0.14.3","X-Developer-Signature":"v=1; a=openpgp-sha256; l=1426;\n i=linux-kernel-dev@aliel.fr; h=from:subject:message-id;\n bh=NEIvA2L6y4otwyymsGTvUWGx1Runlk0F5PI2/57WLQQ=;\n b=owGbwMvMwCWm1SvKXP3cUInxtFoSQ+bzlOzIzyqlEm98eWdN8lFe+ORaT8UBN485Ju9O55Zt8\n mf9fOZLRykLgxgXg6yYIkv/XMsT7y4fPfN1j3oKzBxWJpAhDFycAjCR7WaMDFtD3Fj10iafZA2O\n Xe1g+nVl4dovlalLkv3Pc88sW368/hgjw9S1z/35Vj3JeTSXWWupXHi6wPeuU+JxL35ndfb7T5x\n cyQcA","X-Developer-Key":"i=linux-kernel-dev@aliel.fr; a=openpgp;\n fpr=DFD863F61375BF917F0012173953305EF1D0EC3E","X-Endpoint-Received":"by B4 Relay for linux-kernel-dev@aliel.fr/default with\n auth_id=744","X-Original-From":"Ronald Claveau ","Reply-To":"linux-kernel-dev@aliel.fr"},"content":"From: Ronald Claveau \n\nThe Khadas VIM4 MCU register is slightly different\nfrom previous boards' MCU.\nThis board also features a switchable power source for its fan.\n\nSigned-off-by: Ronald Claveau \n---\n Documentation/devicetree/bindings/mfd/khadas,mcu.yaml | 18 ++++++++++++++++++\n 1 file changed, 18 insertions(+)","diff":"diff --git a/Documentation/devicetree/bindings/mfd/khadas,mcu.yaml b/Documentation/devicetree/bindings/mfd/khadas,mcu.yaml\nindex 084960fd5a1fd..1f135618e3b6f 100644\n--- a/Documentation/devicetree/bindings/mfd/khadas,mcu.yaml\n+++ b/Documentation/devicetree/bindings/mfd/khadas,mcu.yaml\n@@ -18,6 +18,7 @@ properties:\n compatible:\n enum:\n - khadas,mcu # MCU revision is discoverable\n+ - khadas,vim4-mcu # Different MCU variant, not discoverable\n \n \"#cooling-cells\": # Only needed for boards having FAN control feature\n const: 2\n@@ -25,10 +26,27 @@ properties:\n reg:\n maxItems: 1\n \n+ fan-supply:\n+ description: Phandle to the regulator that powers the fan.\n+ $ref: /schemas/types.yaml#/definitions/phandle\n+\n required:\n - compatible\n - reg\n \n+allOf:\n+ - if:\n+ properties:\n+ compatible:\n+ contains:\n+ const: khadas,vim4-mcu\n+ then:\n+ required:\n+ - fan-supply\n+ else:\n+ properties:\n+ fan-supply: false\n+\n additionalProperties: false\n \n examples:\n","prefixes":["v4","1/8"]}