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=-3.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 A898DC433E0 for ; Fri, 26 Feb 2021 13:27:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4773A64E4B for ; Fri, 26 Feb 2021 13:27:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229769AbhBZN1F (ORCPT ); Fri, 26 Feb 2021 08:27:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38132 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229556AbhBZN1D (ORCPT ); Fri, 26 Feb 2021 08:27:03 -0500 Received: from mail-wm1-x333.google.com (mail-wm1-x333.google.com [IPv6:2a00:1450:4864:20::333]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8C1B1C061756 for ; Fri, 26 Feb 2021 05:26:23 -0800 (PST) Received: by mail-wm1-x333.google.com with SMTP id w7so7427016wmb.5 for ; Fri, 26 Feb 2021 05:26:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=maxiluxsystems-com.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=iLtiG3tadozqFqoX0KxLgvlzHJBxy3tQtnMorPQruoU=; b=TSeeqZXl8Vbi2dj6T7coqdZYD2H6ZwQFLS08TALUV3lUOXxiFsrrwQCJCwsCgDo6oi k7gv6O+wCsV705B8E44UMNN9DWn9ji6br7pc5zHkOYkYrqYdGKjCd4yCpoxh4oRGxWEE okKn1UAoEUWYOIU98MUpriH/DNnIB1IajvVQy8yFb5QU7ItCmQ8Uexyz0yN0VdbNDUMc E308cCfu/RJZJwVebMng9fR3Rc28wpraGDDqiiusbscPt6OqqjRjUxgoOGpaSXNqoDST qPIPShBTXlX0HfbtVLm82ga5IfbUd6VEFcqUsyJswKJviUCRWQIgbAl477sNJ2FbxByB GE5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=iLtiG3tadozqFqoX0KxLgvlzHJBxy3tQtnMorPQruoU=; b=RzGXPA1mRKuNqIrVZO8birdjyXD4ba6oRQDR6HKYDC4IhuBbLG+PF+PBazN29F+5I+ TegetduQaJ6/ou9uz/2oXDOOuvgNwlp+Lt6SsfEqB1ZPyggjKOXCTktFeOK0uebVD5Qk V4UikH68Frlr0tHVE8JS+eKueKiTCoTe/F6EHz+LNLAVRUddQBi4/Wdeq2rAIbBY73sA XTgB6FKZ9sSRhB4eZFoljT3J5YlUBi1RqkojAzIFvbVrQjRKhX5fLXOUT59MJaGjTDeW OYzBJbN4ti0C/IP6TX3oUCcq5iTjU1qtUEDId8gsiMjo22IQB+CNbQ/mKyQEeOpJYkHx IEvg== X-Gm-Message-State: AOAM531eYnAHQHcdtcx6pUD+LUAW64odqlqmHlXe3GJPdsKgQo4b997q x0IWOycb94Yi0zU4vf4SBRZSLA== X-Google-Smtp-Source: ABdhPJxg6LtlA0lkVaSueD98t7gEgdkEoyjRuFOGHVp7DV7P2odW1k5Tey2xO0O3zuaWqwCV72C+9Q== X-Received: by 2002:a7b:cb98:: with SMTP id m24mr2815056wmi.15.1614345982300; Fri, 26 Feb 2021 05:26:22 -0800 (PST) Received: from bigthink (94.197.200.66.threembb.co.uk. [94.197.200.66]) by smtp.gmail.com with ESMTPSA id x13sm12499828wrt.75.2021.02.26.05.26.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Feb 2021 05:26:21 -0800 (PST) Date: Fri, 26 Feb 2021 13:26:20 +0000 From: Torin Cooper-Bennun To: Marc Kleine-Budde Cc: linux-can@vger.kernel.org Subject: Re: can, tcan4x5x: look to merge rpi support into rpi kernel tree Message-ID: <20210226132620.wfuvywkzmhwfmhpc@bigthink> References: <602651f9.1c69fb81.302a5.647d@mx.google.com> <20210215144509.rhds7oybzat6u27w@hardanger.blackshift.org> <20210226121854.4gb5yufb23hyar73@bigthink> <7254df67-202f-ac23-c45c-fcb5172a70a3@pengutronix.de> <20210226123144.cwhjberqeyjctc6w@bigthink> <2aebafa3-6a18-7d14-b32d-e17909d3d6a8@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2aebafa3-6a18-7d14-b32d-e17909d3d6a8@pengutronix.de> Precedence: bulk List-ID: X-Mailing-List: linux-can@vger.kernel.org On Fri, Feb 26, 2021 at 01:40:35PM +0100, Marc Kleine-Budde wrote: > I think you cannot do (synchronous) SPI from NAPI (which is SoftIRQ context). I see. I now understand why you recommend using mcp251xfd as a template for m_can. Am I correct in saying that rx-offload requires RX timestamps to be available? They can be enabled in M_CAN, but the v3.3 manual states that the internal timestamp generation (apparently only option for tcan4x5x) cannot be used for CAN-FD. -- Regards, Torin Cooper-Bennun Software Engineer | maxiluxsystems.com