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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F623C19F2A for ; Wed, 3 Aug 2022 17:35:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238214AbiHCRfL (ORCPT ); Wed, 3 Aug 2022 13:35:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43182 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238072AbiHCRfI (ORCPT ); Wed, 3 Aug 2022 13:35:08 -0400 Received: from mail-ej1-x62a.google.com (mail-ej1-x62a.google.com [IPv6:2a00:1450:4864:20::62a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 729EE5725A for ; Wed, 3 Aug 2022 10:35:06 -0700 (PDT) Received: by mail-ej1-x62a.google.com with SMTP id tk8so32701315ejc.7 for ; Wed, 03 Aug 2022 10:35:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=39DQIGQXThBozrEjWiDrDLhudCkP9OJY7K/8OUvd6/I=; b=T0ECUMDQyzHYeVYDtBxdrJfXbZ6pCVez9cmhnZRCRu5+U4KzPZUaNDD2xluVSBppE/ gFdLH//buvE6AMKInJkbT83OWEFjWoziInti0CnrgWH9ip5wzV5ykMwcAiGQ0SuKnsat RcpOxXDWkr4mWKi0AqCe3bMiGzIFfrOiL1xdFXkNmHd2Mi8bsuLOtKK2JsCG0lBuHWt7 knaJo/3VYjNjxFf/fwYTRfpRSC+DiPEbImNzF2e/cRoXO8vYs24OxpfKmpLNlsHbfpVo /93/MsnxblKS7iEUOuF1gRJRZrIMgZo8rjJHPeoQrYOY50XWc933rr7850HnkVhm3Snt mM1w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=39DQIGQXThBozrEjWiDrDLhudCkP9OJY7K/8OUvd6/I=; b=Z9MlPX4uFANdQhIJxSRXaV/8aw1namr0PV00yDnIwjTBC+h250wtEIUNCS4I4iPfR5 kbenTVUMSo+0/iZfo2g4U3207/qKTfhdPiZO3+tmvQNsObfdkb9IkbTRKE2/SHYTlIpU SvqIqX4BXktpt5iKGVV5tYv6MRFuKzJjU3f8DSl2FYv2OReWrrVNnX++qDffBUa9VuQx k4tnMqyYGA5Ord0Zy05W7WvbE5duPRn3Qz9L9lF9Zp0LEAlSqB24Esxs0IQrQRXu/oxj W6Gq1tJMXEUGNpHMjKcbo3okWjNF0a1Cm4qjRuJvc+ETaTrU4ZuEWCKO/oip7ikl0I02 ajyQ== X-Gm-Message-State: AJIora/McWm3tbWdd99mo4L2xG8PBw/eDqPZlI2Fz9qbNscjARUgK6yq o13lk/iDE/enegLRxD8dvmpiFCrVRzlldbhZUxC+QQ== X-Google-Smtp-Source: AGRyM1ua61ngReTCruH53k/WgeL39qAn7374O3trKod4RhmxrLdTDW1BzvH+okqkgk8HVOl/oaOepnZjb6M/dewNQEk= X-Received: by 2002:a17:906:a089:b0:72f:826b:e084 with SMTP id q9-20020a170906a08900b0072f826be084mr21382249ejy.708.1659548105017; Wed, 03 Aug 2022 10:35:05 -0700 (PDT) MIME-Version: 1.0 References: <20220802175755.6530-1-sudip.mukherjee@sifive.com> <20220802175755.6530-2-sudip.mukherjee@sifive.com> In-Reply-To: From: Sudip Mukherjee Date: Wed, 3 Aug 2022 18:34:53 +0100 Message-ID: Subject: Re: [PATCH 01/11] spi: dw: define capability for enhanced spi To: Mark Brown Cc: Serge Semin , Rob Herring , Krzysztof Kozlowski , Greentime Hu , Jude Onyenegecha , William Salmon , Adnan Chowdhury , Ben Dooks , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Jeegar Lakhani Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 2, 2022 at 7:48 PM Mark Brown wrote: > > On Tue, Aug 02, 2022 at 06:57:45PM +0100, Sudip Mukherjee wrote: > > > Some Synopsys SSI controllers support enhanced SPI which includes > > Dual mode, Quad mode and Octal mode. Define the capability and mention > > it in the controller supported modes. > > > +#define DW_SPI_CAP_EXT_SPI BIT(2) > > This isn't at all descriptive, it'd be better to have a capability bit > for the various multi-line data modes (or possibly individual bits for > them, though board setup will stop us using things that aren't supported > in a given design anyway so it's a bit redundant) - that'd be a lot > clearer and avoid confusion further down the line when some other > feature gets added. Do you mean to add separate capability bit like: DW_SPI_CAP_DUAL_SPI DW_SPI_CAP_QUAD_SPI and DW_SPI_CAP_OCTAL_SPI ? -- Regards Sudip