From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2E26C43461 for ; Wed, 5 May 2021 14:59:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B3A3613BA for ; Wed, 5 May 2021 14:59:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233426AbhEEPAB (ORCPT ); Wed, 5 May 2021 11:00:01 -0400 Received: from mout.kundenserver.de ([212.227.126.135]:50961 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233518AbhEEO77 (ORCPT ); Wed, 5 May 2021 10:59:59 -0400 Received: from [192.168.1.155] ([95.114.117.51]) by mrelayeu.kundenserver.de (mreue011 [212.227.15.167]) with ESMTPSA (Nemesis) id 1MRn0U-1m6OWX2shu-00TBd0; Wed, 05 May 2021 16:58:35 +0200 Subject: Re: [PATCH v3 2/4] leds: simatic-ipc-leds: add new driver for Siemens Industial PCs To: Henning Schild , Andy Shevchenko Cc: Linux Kernel Mailing List , Linux LED Subsystem , Platform Driver , linux-watchdog@vger.kernel.org, Srikanth Krishnakar , Jan Kiszka , Gerd Haeussler , Guenter Roeck , Wim Van Sebroeck , Mark Gross , Hans de Goede , Pavel Machek References: <20210329174928.18816-1-henning.schild@siemens.com> <20210329174928.18816-3-henning.schild@siemens.com> <20210330135808.373c3308@md1za8fc.ad001.siemens.net> <20210330143011.0e8ae4a0@md1za8fc.ad001.siemens.net> <20210330172305.67b6e050@md1za8fc.ad001.siemens.net> <20210401124415.3c9321c0@md1za8fc.ad001.siemens.net> <20210412135641.1173941b@md1za8fc.ad001.siemens.net> From: "Enrico Weigelt, metux IT consult" Message-ID: Date: Wed, 5 May 2021 16:58:31 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 MIME-Version: 1.0 In-Reply-To: <20210412135641.1173941b@md1za8fc.ad001.siemens.net> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: tl Content-Transfer-Encoding: 8bit X-Provags-ID: V03:K1:m7rpyvRWbx2i21vXIFpgzQpQITT3X3V+SHOF8txJtU59XM3pxpJ pAv41dUJE34otqkj+DaIFLTb2IbSSQNRGzHiJv28svPMx0i4FlG46wmv4Zi+NVEg6+ic7j/ DtW3eiRzTWK+OI3ymOCoePjHoXNKuQeQquGinc6YpMcjlkNfzPWxx+SWY8geUY2A5ce/BXJ vqER+xcFxmhXhU0sCwgng== X-UI-Out-Filterresults: notjunk:1;V03:K0:Bef024urxdA=:0ttqYRbPJ/NP5Moi2UDHg7 UTAwfvxOP9iBWS+WfjrBSdpMyic7ujXaPxv46JH++uy3ngRtGI1rm51YwwskWFQfruNXzGkX6 q4U7CuMiuI9A9WJ0W5Fy+0ZPDrEoSLiNcIqB3gymFdcxmtVa/IXrDw0cFmk4yj/3AFo4WCzA9 2gOM6kBlMLi0XMYkV3G0+a2v1JczAg0WA4CyIoVAjacojHPk0Xxu/H1q73yYv4JMZncZZ1XOK 83Rzj0Ef9DtcyvjiDg7Hjx3qRzvTc/UrvgM+cSwCx2o2MeSG0MO7G4nvxWn9xLVcxsH94Ms22 mULJvV0OCH0ME0ZB5YLZwbP4WFJghVRLPi8g0e1oDFKR9Cg1vrB9YYCuFi0bZDqczy/dbdBFm YFBdOdn5boh4x6P6yiYm5AJzEHK5zGbE79BxYIqMifNRbsLtMZCTROZFFdopRKpiOgS4PhpkX 1lUAoOAVlJ5AOSdNbloyD10r5hE8LY06NMVHZX46i6e93QNwoDji0v/2ZtNSSdnH5ZnQdo53e PfGhuJqbQE60I1vfCCQbHA= Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org On 12.04.21 13:56, Henning Schild wrote: > Enrico, does "gpio_amd_fch" show up under /sys/class/gpio as a > gpiochip? Or how to interact with that driver before basing another one > on top? It's not probed on its own, but explicitly by a board specific driver, as it needs board specific data. See drivers/platform/x86/pcengines-apuv2.c --mtx -- --- Hinweis: unverschlüsselte E-Mails können leicht abgehört und manipuliert werden ! Für eine vertrauliche Kommunikation senden Sie bitte ihren GPG/PGP-Schlüssel zu. --- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering info@metux.net -- +49-151-27565287