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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 7AFD6C2D0C2 for ; Tue, 31 Dec 2019 14:31:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4E6B2206DB for ; Tue, 31 Dec 2019 14:31:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726674AbfLaOb3 (ORCPT ); Tue, 31 Dec 2019 09:31:29 -0500 Received: from mail-ot1-f65.google.com ([209.85.210.65]:36780 "EHLO mail-ot1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726060AbfLaOb3 (ORCPT ); Tue, 31 Dec 2019 09:31:29 -0500 Received: by mail-ot1-f65.google.com with SMTP id 19so38010017otz.3; Tue, 31 Dec 2019 06:31:29 -0800 (PST) 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; bh=aNGy9k3GjPpQw+gLldMaMw00/W7LQuR5voB3/IzYKmU=; b=A4s+RdqrRThC+T8F0yWQ21ggg3gg5MZoJMepfyKSDYu70vhsvbV5vZFHehBEMdCrXA 4WgxthNWd8yZ8qgrqyt0DPc0ZK/FOshI/9y9aI9/RNhNhA3SUVSWMKkjxBQ7fnDu5gw2 jpn2HLbUf5Xh8vvd5CvNZyHSnEWzzQBelE2t0gfTS0Spy1iGjfxvyXz6LIk5SUm250Px N7WJ8cP5KdJH5EQk5XArItk/N4S2Jpay3TB1sfM1i/K3JWMEx21HqXDh4nz440/1cSLT 2Rr9vDQ0Ceo43zRFHEGYjwN5hyGdgyqUGfGdo4TL0AxgrUOHreVXRb3btWI07q977OtA Gyaw== X-Gm-Message-State: APjAAAU1lWrxkuFtbsLHtSlc98l0MMI9iEvIx8m7OaU4mpyr2TplUav/ 6ccRVGTAAstVjCJ9Dvr6iMMwCI7zti/P7sL/zMM= X-Google-Smtp-Source: APXvYqyRede9nj6QX/J+h2iPj3015tGZi4SSxVB405gFFdOzF7lG31k2iCzmQCt8rAqZ0PIbsv+1WWhJh/5VIYtn99c= X-Received: by 2002:a9d:8f1:: with SMTP id 104mr75063793otf.107.1577802688662; Tue, 31 Dec 2019 06:31:28 -0800 (PST) MIME-Version: 1.0 References: <20191116005240.15722-1-robh@kernel.org> <20191116005240.15722-3-robh@kernel.org> In-Reply-To: From: Geert Uytterhoeven Date: Tue, 31 Dec 2019 15:31:17 +0100 Message-ID: Subject: Re: [PATCH 3/3] dt-bindings: PCI: Convert generic host binding to DT schema To: Rob Herring Cc: "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Linux Kernel Mailing List , linux-pci , Bjorn Helgaas , Lorenzo Pieralisi , Andrew Murray , Zhou Wang , Will Deacon , David Daney , Linux-Renesas Content-Type: text/plain; charset="UTF-8" Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Hi Rob, On Tue, Dec 31, 2019 at 9:23 AM Geert Uytterhoeven wrote: > On Tue, Dec 31, 2019 at 12:30 AM Rob Herring wrote: > > On Thu, Dec 12, 2019 at 7:41 AM Geert Uytterhoeven wrote: > > > On Sat, Nov 16, 2019 at 1:53 AM Rob Herring wrote: > > > > Convert the generic PCI host binding to DT schema. The derivative Juno, > > > > PLDA XpressRICH3-AXI, and Designware ECAM bindings all just vary in > > > > their compatible strings. The simplest way to convert those to > > > > schema is just add them into the common generic PCI host schema. > > > > > > > > Cc: Bjorn Helgaas > > > > Cc: Lorenzo Pieralisi > > > > Cc: Andrew Murray > > > > Cc: Zhou Wang > > > > Cc: Will Deacon > > > > Cc: David Daney > > > > Signed-off-by: Rob Herring > > > > > > > index 515b2f9542e5..000000000000 > > > > --- a/Documentation/devicetree/bindings/pci/designware-pcie-ecam.txt > > > > +++ /dev/null > > > > > > > -Example: > > > > - > > > > - pcie1: pcie@7f000000 { > > > > - compatible = "socionext,synquacer-pcie-ecam", "snps,dw-pcie-ecam"; > > > > - device_type = "pci"; > > > > - reg = <0x0 0x7f000000 0x0 0xf00000>; > > > > - bus-range = <0x0 0xe>; > > > > - #address-cells = <3>; > > > > - #size-cells = <2>; > > > > - ranges = <0x1000000 0x00 0x00010000 0x00 0x7ff00000 0x0 0x00010000>, > > > > - <0x2000000 0x00 0x70000000 0x00 0x70000000 0x0 0x0f000000>, > > > > - <0x3000000 0x3f 0x00000000 0x3f 0x00000000 0x1 0x00000000>; > > > > - > > > > - #interrupt-cells = <0x1>; > > > > - interrupt-map-mask = <0x0 0x0 0x0 0x0>; > > > > > > An all-zeroes interrupt-map-mask seems to be very common on embedded > > > SoCs, where all devices are mapped to a single interrupt. > > > > Indeed. > > > > > However, schemas/pci/pci-bus.yaml says: > > > > > > interrupt-map-mask: > > > items: > > > - description: PCI high address cell > > > minimum: 0 > > > maximum: 0xf800 > > > - description: PCI mid address cell > > > const: 0 > > > - description: PCI low address cell > > > const: 0 > > > - description: PCI IRQ cell > > > minimum: 1 > > > maximum: 7 > > > > > > and thus complains about an all-zeroes mask, e.g. > > > > > > arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dt.yaml: > > > pcie@fe000000: interrupt-map-mask:0:3: 0 is less than the minimum of 1 > > > > Now fixed. > > Thank you, confirmed. And with latest renesas-drivers, I started seeing: arch/arm/boot/dts/r8a7791-koelsch.dt.yaml: pci@ee0d0000: interrupt-map:0: [0, 0, 0, 1] is too short arch/arm/boot/dts/r8a7791-koelsch.dt.yaml: pci@ee0d0000: interrupt-map:1: [5, 0, 113, 4] is too short arch/arm/boot/dts/r8a7791-koelsch.dt.yaml: pci@ee0d0000: interrupt-map:2: [2048, 0, 0, 1] is too short arch/arm/boot/dts/r8a7791-koelsch.dt.yaml: pci@ee0d0000: interrupt-map:3: [5, 0, 113, 4] is too short arch/arm/boot/dts/r8a7791-koelsch.dt.yaml: pci@ee0d0000: interrupt-map:4: [4096, 0, 0, 2] is too short arch/arm/boot/dts/r8a7791-koelsch.dt.yaml: pci@ee0d0000: interrupt-map:5: [5, 0, 113, 4] is too short Looks like interrupt-map is split incorrectly: shouldn't each entry have 8 cells? 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