From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx.nabladev.com (mx.nabladev.com [178.251.229.89]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6BD443859E9; Thu, 23 Jul 2026 04:47:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.251.229.89 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784782099; cv=none; b=rbAC2H+c/BBfA7J5AyjzfLsz9r/+F/XXh3nL7hv+fNDgs+4svnjHjZffIvqtjM+IyETQmDpf6pWCqHSns4yyJe8jhyBOE7dtf6Pev2V4UmRoofKErUSO34D6IfR0OTd7PWbjNc4++yE4pFLqq1nTZzGknoevXv3NU/pWPU6Dxes= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784782099; c=relaxed/simple; bh=hacmWLs3ODWCH/rl9eIxaL2Qvwvwwc2JbyNCjZfyblY=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=LGV5Tfrxqn0nihqMnolKR4ZfA4ORH1D4crlEaix5kTXsry3qV08lCTcKzXIWLd0Op2mJza3YTvGE4Ul30AgLXe+/iBz6krgbraVbg7gLtk0WCFDA1GHHtZNPvrR0C7sB7oubL6R6AJfgR5Cl9MRott6O48g987k2SM4wI85A5oE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nabladev.com; spf=pass smtp.mailfrom=nabladev.com; dkim=pass (2048-bit key) header.d=nabladev.com header.i=@nabladev.com header.b=aJO93URX; arc=none smtp.client-ip=178.251.229.89 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nabladev.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nabladev.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=nabladev.com header.i=@nabladev.com header.b="aJO93URX" Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 5782E11AF26; Thu, 23 Jul 2026 06:47:50 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nabladev.com; s=dkim; t=1784782073; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:content-language:in-reply-to:references; bh=tmgyHk6loOLo2xFly+bTdBXTfayYJvruU03nKY/rO4k=; b=aJO93URXK63r7gBQTWR5JyNICiyYIxrp7Wqf20fWRrLXz8FM5JjUM3yFLnU02+o5BxHhAB zTqNqLfc/x01qimvxrcx6R5NdniXq70o82xWH+MipwrvCLZhrWgnkmbErdXIbAXJN9xzQo PFP6PyfusspfW5cKxwdtJCu31bNWoxt3Geaa1R2CCp3NpFUYY06pRwRPA0ZoABRTFaiL9R urrlpG1QK4rOJTlEuN2S72+p0X0UwD+gVEH40iSOYhYyz1pSwreSPJjj2+gG50iXVqEXCq naZLHOkflGhzFrZ0KTPsczSBuE3KlojWvs0wP3xMmYgGz/XKJpnZpTpqIZefeA== Message-ID: Date: Thu, 23 Jul 2026 06:47:22 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: [PATCH v2] driver: fpga: xilinx-selectmap: add csi and rdwr support Content-Language: en-US To: Xu Yilun Cc: linux-kernel@vger.kernel.org, linux-fpga@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Michal Simek , Moritz Fischer , Tom Rix , Xu Yilun References: <20260721114258.3324794-1-hs@nabladev.com> From: Heiko Schocher In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Last-TLS-Session-Version: TLSv1.3 Hello Yilun, On 23.07.26 06:42, Xu Yilun wrote: > On Tue, Jul 21, 2026 at 01:42:52PM +0200, Heiko Schocher wrote: >> Add csi_b and rdwr pin support for the xilinx,selectmap driver. >> >> In current driver the pins are configured from DTS and set to >> GPIOD_OUT_HIGH. This works in case you have one FPGA. >> >> Extend this to really implement csi_b and rdwr pin function in >> driver, so it works with more than one FPGA. > > Please help specify in changelog: what do csi_b, rdwr pins do? Why they > now work with one FPGA but not with 2 FPGAs? How do you select which FPGA > to reprogram? thanks. I will try to add this. You find some hint here: Documentation/devicetree/bindings/fpga/xlnx,fpga-selectmap.yaml Thanks! bye, Heiko > > Thanks, > Yilun > -- Nabla Software Engineering HRB 40522 Augsburg Phone: +49 821 45592596 E-Mail: office@nabladev.com Geschäftsführer : Stefano Babic