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 E971BC43219 for ; Mon, 7 Nov 2022 12:12:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231933AbiKGMMV (ORCPT ); Mon, 7 Nov 2022 07:12:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231992AbiKGMMT (ORCPT ); Mon, 7 Nov 2022 07:12:19 -0500 Received: from mout.gmx.net (mout.gmx.net [212.227.17.22]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6C02B3E; Mon, 7 Nov 2022 04:12:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=s31663417; t=1667823128; bh=TthCH3MyFeU/53rL5fOF2FHb0MHylxKNaTSlZ2AoxCA=; h=X-UI-Sender-Class:Date:From:To:Cc:Subject:References:In-Reply-To; b=Z33AKJoE+TjApwXXXAJcGicSIS3Ap3+hGcQ1cx6c05oLHC5/Sk927mE7S6vzBmiCY CTRIIRGeoSoUHfetu0bjdbV+VLU3AYxBrma53If3tqk1lBPYhLaIUypHu2luFK+GWZ GLIoqHFY/uom68aZHgYeIDs7l+ptFNeSsy+NxQzHOpAVqybJdEvFVqhhgCSrgGiTwP 2GNssV2qyaDgOBw0WVyZQrGAcEyxEbroN02xDyjYQbBMauuRttCqIlksvQlB4s7Wjm CXdokptZalPCIUtwMqUt8KDxDcrVBpC+HxIO3R7OE5vIDTi87z6chwHjOkfe9g25FJ q4qz1gc9rjqzg== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from probook ([95.223.44.31]) by mail.gmx.net (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1Mel81-1pSRnZ1vdt-00ajmS; Mon, 07 Nov 2022 13:12:08 +0100 Date: Mon, 7 Nov 2022 13:12:08 +0100 From: Jonathan =?utf-8?Q?Neusch=C3=A4fer?= To: Krzysztof Kozlowski Cc: Jonathan =?utf-8?Q?Neusch=C3=A4fer?= , linux-spi@vger.kernel.org, openbmc@lists.ozlabs.org, Lee Jones , Rob Herring , Krzysztof Kozlowski , Mark Brown , Linus Walleij , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org Subject: Re: [PATCH 3/8] dt-bindings: spi: Add Nuvoton WPCM450 Flash Interface Unit (FIU) Message-ID: References: <20221105185911.1547847-1-j.neuschaefer@gmx.net> <20221105185911.1547847-4-j.neuschaefer@gmx.net> <066919b1-c43d-f8ed-0191-cce8c575ee37@linaro.org> <2400e167-073e-65fa-7fe6-b64a34bce256@linaro.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="sBTt7LkDM7vI6FGs" Content-Disposition: inline In-Reply-To: <2400e167-073e-65fa-7fe6-b64a34bce256@linaro.org> X-Provags-ID: V03:K1:CsGqJgqR4n1lj798VMfbtLWI75P+FvbQ2ahoJ149atUQXYkWxQR A+UfigcIimbggR3yNWJeKwgQmf/dEBheHvGowYCRl6nlPWgplkuKBRMmJ4WePrVrc/qutMb Lg2DAcLqqVTraSFi/SSuWkfwZbE4G1XQhpySgkO76qjCp4VlvBd1mlreoxVBEtfXLBBGPf0 628UrCUYOYvaDhOjDV8UQ== UI-OutboundReport: notjunk:1;M01:P0:wRs6Hd/unZ0=;EydYN8ey+yFLMSg/dNiej0V9srE KGKBb7MhjVqdRbiR75GhTayTFWzoTxoMNmm6z6dJeddfVuesQ5TaRsraIrZn/lNdtUerv47kO 3vT4gLZEFDJu7cpfiGXSlAGoWQhP4Fkl7z2hra1TYgFf5wpccd3gR+jLhRtVRGpRJt0xgyr9h Q//ngvTNbgXwQzESDaKeIQYzB9MWS1OSymAV+aA+YU+uxvJdhLd9IkDSdYwHZDKneMS0hmKWw i+nM6i/UX089oX3Ik9Ajmkd8iHVy5kL2VlEfK5ztGh+R6O3nsADy0ItLGQnjMCPXNBBtJP2Sm bnSOYGx7fvZApCyKwuEZ8Rko45M/saYGnPBFBxM6KDVzOSivpL6bQeXqBU7otv7IJQKocLoaZ QrTwcmvzZ223VenExdiKmdGQow2ZGLA8IYxbdaubukBLWkhYiya447qsAxi09LH3EH5is/LEx yGpxX7KifIGcnTxyO2tS7lfwKOgdIMKO8iw+TVph2BXv7LwygikyphNYAcuxuJfuHQHg3R4Xf RURkv2AEaZTY5BDqU8q/60JukDxbJPvI7vKMXlJehFvqsLzyNZO4YomVboLumUY3HPhrgSiQo q1xMN0CZj1Yr740sLdAoIPPXZ6Un0nF7dyz+Z8Qy4DKOUzqchkNdMzq2YM0c/sTu7GNLjBDM8 4+dWDq0ZTDNAvTF1qAgRJQCrUTdp9ceRX6+6tOalQchgdtVGfrHMDc4ibsIJdqdZEe94KMhPs xHbp14ovlvOPE8Cnr2TVs6UFsjT+fA+2eDfWWypSUy0PcLfk6uX6hrF06atgI4xoAhRC4tGW8 T5UJr8A9bfuGAG2FsDhjvMHpeULUiBOJsmFP6AxPnGWBpn3w+KWzNMy2YMJlxGhb3TWJUlW9e KGnZ4ZW/R022o7IeEMb6h1WsdZYwluA7wnjepV9aqjSxfILJZt0hpcoejR8Lll/aq0w+cgEKx JyNyvw== Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org --sBTt7LkDM7vI6FGs Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Nov 07, 2022 at 09:09:15AM +0100, Krzysztof Kozlowski wrote: > On 06/11/2022 15:45, Jonathan Neusch=C3=A4fer wrote: > > On Sun, Nov 06, 2022 at 10:38:45AM +0100, Krzysztof Kozlowski wrote: [...] > >> This is rather obvious, so what you should comment is WHY or WHEN seco= nd > >> resource can be omitted. > >=20 > > Ok, I'll add more reasoning, which is basically: The "memory" mapping is > > only an optimization for faster access, knowledge of it is not necessary > > for full operation of the device. > >=20 > >> Not every instance on the hardware has it? > >=20 > > AFAIK every instance has it, and there's unlikely to be any variation on > > this fact anymore, because newer Nuvoton SoCs replaced the FIU with a > > redesigned and incompatible version. > >=20 > > I admit that the value of making the "memory" mapping optional is rather > > theoretical, and I'm open to making this reg item mandatory to simplify > > the binding. >=20 > If every instance has it, then regardless whether it is actually used or > not, just require second address? Alright, I'll do that. Thanks, Jonathan --sBTt7LkDM7vI6FGs Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEvHAHGBBjQPVy+qvDCDBEmo7zX9sFAmNo9fYACgkQCDBEmo7z X9vrUg//Z2MgjUNH8jTRkS6zluTyC4TV47t+R9TD7rUExJ54x4AOrnXEcjVursL1 ERyEDEOzRqDne+xXjv4d5UfGBK2bBfmd4+lZzyx0BfKa/QdN/LDVc+XQzCYC1CEA xWdH1Gy50GQhUUa3hB87zZ3diCH8/fhnwhT0DFshIuf1C6n/zwmPt2vVdam2wSzo Gck72bz1T4ZHHtoofDcv++FvDNw9gDiiX1Tu6DjBi2N4JUn08xuYm7tDE8EJaYhU 4DLguem72fiZCQ1nJ3u5Y79k/7woIhmcRgYSW8Q0oVXB1wLltCYkwphuR3UEMMrZ db6K1P0JzFYDyOn140AsmOSrqN9NFQXAGf4FApuq5SqCIUuHoJwI6yPegaagnO2w Zz6gllxTwhZ2W7U+nxY1I3BGwcHT368D+VuXY6B91qT7MU0VzjaFHbIke3mlceuq 34NaYgrJq4EZbAz3F3P54x9AIfp1z474EmavNF4/6cb5el3xDreexxmcPmUvd1ua fxmcBmZvc1vjFAUC7r9vKWUWkckcluJUTepmyoZp0O0RCn0c1xHMgzebGMh6dkLN 4svAXrvnLQeLCSeVqDe808ZyqUjwNYRrzcK7ExZ4isQBUOHL3tzJ0s1jKBtu5kGK wVqovMtUD7l6/R6KxXbPjNdi6mJDGz4d9DGV17KlnO/h4kZudb0= =snOc -----END PGP SIGNATURE----- --sBTt7LkDM7vI6FGs--