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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 849DCC55165 for ; Thu, 30 Jul 2026 13:22:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Reply-To:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=YOLgMo6RjA9zbs2ZTcHAHi58p1A3RcAjXz8bHSv1ZbU=; b=XcGFH184v7M7XjaCKAbPpNQz/b +4No6HkpLzEnquppCqKwHE9IPi2HmTZnuyh/Y/S18Rk9BqjMRX+Wmehwq7OWb/coDNkWN4zpylcad cJ7GAdanVvZLzKWq0EmiWKbVg/CN2OJetNkaIDLgMdu1RBVl+Oh4PcBly+zENXDq7zvWnPgqXrINp WBMfxfjZsZiIahBPzHRAgVd87NG2Dqbq0vgG9Ev02iDLCVnApmNgzYZ7M3pIeJ9OA3uKit3A/Kvys b0de6zjpZTCrhJoWAP14VBPZ3zORkMzOcA2okf1SjbB/QyvDNWxvmxZhX1ir3I9/PQiPiONEPix4z 9V12SeSA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wpQiZ-0000000Aa9v-01GW; Thu, 30 Jul 2026 13:22:35 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wpQiX-0000000Aa9n-3vfo for linux-amlogic@lists.infradead.org; Thu, 30 Jul 2026 13:22:33 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 4A2A3600B1; Thu, 30 Jul 2026 13:22:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C06F1F000E9; Thu, 30 Jul 2026 13:22:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785417753; bh=9Q3HIxWWSodqt0Bo0OCgnfV4yYAcllzEKkbzND1L9o0=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=B/O8Ol09cZSmMUODobcKqSgd5Q/JcwB+2tZgm0DaW+RO4xPO7iONvAMbU7s8GrSss tF71RlusA1A8HJt452LGRwMCcB+O2o5A+ngycPYg/Pn6KsVL8Zy1VIuU7WWaMht3I1 0050WXTMkk7gol4vgXHOeTeAFqzR2l3icuVR7z2g0PmSwR0DM3skSzni0sjgoafmZd vnSfQHPVUf0C8FiZDURuUF/UMKh/fEO/i4hKC8kSFW0RbqHKFp5TJhPoRk56uEhQO/ 8ihOS88SOl29wZ09Wr6XN2aX/RUL7xIZD0rW0ttoinnmiUzo65zvplml7lv7YQ5Lcl cyf7wIqfPgXgw== Date: Thu, 30 Jul 2026 14:22:28 +0100 From: Mark Brown To: xianwei.zhao@amlogic.com Cc: Sunny Luo , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-amlogic@lists.infradead.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/4] spi: dt-bindings: amlogic: spisg: Document A9-specific properties Message-ID: References: <20260723-a9-spisg-v2-0-9fc39106b7e2@amlogic.com> <20260723-a9-spisg-v2-1-9fc39106b7e2@amlogic.com> MIME-Version: 1.0 In-Reply-To: <20260723-a9-spisg-v2-1-9fc39106b7e2@amlogic.com> X-Cookie: In specially marked packages only. X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============1697848232373399293==" Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org --===============1697848232373399293== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="9CS4vkVm2ZtSBEMP" Content-Disposition: inline --9CS4vkVm2ZtSBEMP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jul 23, 2026 at 06:43:42AM +0000, Xianwei Zhao via B4 Relay wrote: > From: Xianwei Zhao > Document the Amlogic A9 SPISG controller and its additional > Device Tree properties. > Add the "amlogic,a9-spisg" compatible string and define the > A9-specific "amlogic,mo-idle-output" and "amlogic,word-gap" > properties, which configure the MOSI idle output level and > the inter-word gap, respectively. > @@ -35,6 +34,23 @@ properties: > resets: > maxItems: 1 > =20 > + amlogic,mo-idle-output: > + description: | > + Controls the MOSI output level when the controller is idle. > + 0 - Drive MOSI low > + 1 - Drive MOSI high > + 2 - Follow the last transmitted bit > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2] > + default: 0 > + > + amlogic,word-gap: > + description: | > + Number of idle clock cycles inserted between consecutive SPI words. > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 1 I'd expect these to be per-device properties, not per controller. The word_gap sounds a lot like the existing word_delay feature we have - if it's different it'd be good to be clear why. --9CS4vkVm2ZtSBEMP Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmprUBMACgkQJNaLcl1U h9B6Igf/X+zzg9VfJoUN5T5BGj5eihf8ukNh7rLmr4zYQsfOkHIr/NcL/kZsXsxf 7KuCeVVRO/KVxZesl6kSr8Kf7h8SEjJChTauUDDy2Yy3up9zzI0seOO2Kpibc3Nh Xq+6ZmSDie9G3zBKMHNB71//bhMI+K5duCbfk8A0F6dsG1wsJobxAAlhTcHZnsiu LkmiQ+7p/rbBodJ6B+zk7tnpSvNFYaOkXVYO0I+kgDCF7uCyHok1/UKT/iYaaBbI R6ryWEykKC5fRmxPgculPRoamYLQhC/uMIMtSLdQK1DiKxVc5tEzp0pVLkKi4xss nQMdyTzCWVf4gThGtW1MS6J6xSXnRw== =2hV1 -----END PGP SIGNATURE----- --9CS4vkVm2ZtSBEMP-- --===============1697848232373399293== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic --===============1697848232373399293==--