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, 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 D9338C4742C for ; Fri, 30 Oct 2020 09:14:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 83B9B20728 for ; Fri, 30 Oct 2020 09:14:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726157AbgJ3JOP convert rfc822-to-8bit (ORCPT ); Fri, 30 Oct 2020 05:14:15 -0400 Received: from mail-ot1-f65.google.com ([209.85.210.65]:37487 "EHLO mail-ot1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725784AbgJ3JOP (ORCPT ); Fri, 30 Oct 2020 05:14:15 -0400 Received: by mail-ot1-f65.google.com with SMTP id m22so4981590ots.4; Fri, 30 Oct 2020 02:14:14 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=eax1mQt5Nxlkrc6lz4V8Qs9GVwzDeVeptKqA1fY3YqI=; b=OeFteF8KLmEm6Pmm6LYbm6XGfnmkDMYdYL6swh9G0HzCH4cxOG7pvHmY/vrIvB4lyB L6dQhfI64hQ40b56TZIJq2MRe5IHCHiW/2u5vXz1DtTH2LB2oH4YxEq4FarykWTkegYJ pJiiG17haUHQR4dMPvdztXOvd93sBAPpaBHoffw/Bda93nWC8SaVAQSiBYZjB4ZUDJeb THWOLKN76cNAECU9MwSw+yv4UjRfh6fVIzO/k4aRaOYaaJkuDz4l1N0cP0kUsH7/HtHP 5+UHlVZZ+rYbpQ4pFFVvOUdXlJuLKvPc81bFRbDtDl7/cSoEcRZoAepEeMkfyoUYE1/u epKw== X-Gm-Message-State: AOAM532APfyaZ8oAU53J1/jB1kKNKeDAkuyAgRQfprUq43gwqem2RTkg U3TB5ILdRQ2c1uCIS7IEW4z1uOsnFLdXqTV9G2/jICeHXINUrA== X-Google-Smtp-Source: ABdhPJxU2LcEnBrS54EKv3VReTS3xsQ7JtAE6hs6HwVo/GymLBlPys36gW5GuUbQ8quzzcl7da+489Jj+aIekKIbu9s= X-Received: by 2002:a9d:3b76:: with SMTP id z109mr918089otb.250.1604049254318; Fri, 30 Oct 2020 02:14:14 -0700 (PDT) MIME-Version: 1.0 References: <20201029133741.25721-1-erosca@de.adit-jv.com> <20201029133741.25721-2-erosca@de.adit-jv.com> <20201029163213.GA12422@lxhi-065.adit-jv.com> <20201030090728.GA19340@lxhi-065.adit-jv.com> In-Reply-To: <20201030090728.GA19340@lxhi-065.adit-jv.com> From: Geert Uytterhoeven Date: Fri, 30 Oct 2020 10:14:03 +0100 Message-ID: Subject: Re: [PATCH 2/2] arm64: dts: renesas: r8a77961: ulcb-kf: Initial device tree To: Eugeniu Rosca Cc: Linux-Renesas , Magnus Damm , Rob Herring , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Linux Kernel Mailing List , Steffen Pengel , Eugeniu Rosca Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi Eugeniu, On Fri, Oct 30, 2020 at 10:07 AM Eugeniu Rosca wrote: > On Thu, Oct 29, 2020 at 07:23:53PM +0100, Geert Uytterhoeven wrote: > > On Thu, Oct 29, 2020 at 5:34 PM Eugeniu Rosca wrote: > > [..] > > > I don't think we want to add new compatible string to describe each > > combo. Just add "renesas,r8a77961" to the last enum? > > I'm afraid I misinterpreted your request. I've pushed your proposal to > https://lore.kernel.org/linux-renesas-soc/20201030083051.18752-4-erosca@de.adit-jv.com/ Thanks, got it! > > > IMHO one thing which is certainly worth clarifying and fixing is the > > > KF revision currently documented in renesas.yaml, i.e. M03. > > > > > > Shimafuji released at least M04, M05 and M06 revisions of KF (nicely > > > compared at https://elinux.org/R-Car/Boards/Kingfisher#Change_point). > > > > > > The question is, does the community intend to support M03 through M06 > > > (in which case all of them might need an entry in the documentation) or > > > anything which is earlier than M06 has to be considered deprecated (in > > > which case renesas.yaml would need a simple s/M03/M06/ update)? > > > > I'm not that familiar with KingFisher and the various revisions. > > Do these differences have an impact on the software side? > > The diodes and filters probably don't. > > I personally no longer use KF M03, since its major limitation is not > being able to update the contents of Hyperflash using Lauterbach if > ULCB is stacked on the expansion board (unplugging ULCB each time > it is flashed is absolutely not practical). Note that if you build ATF with RCAR_RPC_HYPERFLASH_LOCKED=0, you can access HF from U-Boot or Linux. > I've heard from audio engineers that recent revisions are more suitable > for audio use-cases, but I don't know the full details. > > > The I2C repeaters are PCA9548ADB on M03, hence they use a Linux > > driver. By what have they been replaced? > > What's the nature of the MOST ↔ GPS Function select register change? > > I will try to collect more information and, if I succeed, I will come > back with feedback. Thank you for your patience. Thanks! Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds