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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_MUTT autolearn=ham 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 D24EDC32789 for ; Sun, 4 Nov 2018 12:13:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A2A4C20854 for ; Sun, 4 Nov 2018 12:13:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A2A4C20854 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ucw.cz Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729643AbeKDV2E (ORCPT ); Sun, 4 Nov 2018 16:28:04 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:40140 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726919AbeKDV2D (ORCPT ); Sun, 4 Nov 2018 16:28:03 -0500 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id 8C15B80986; Sun, 4 Nov 2018 13:13:12 +0100 (CET) Date: Sun, 4 Nov 2018 13:13:14 +0100 From: Pavel Machek To: Lubomir Rintel Cc: Mark Brown , Geert Uytterhoeven , James Cameron , Rob Herring , Mark Rutland , Eric Miao , Haojian Zhuang , Daniel Mack , Robert Jarzmik , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 09/11] dt-bindings: spi/spi-pxa2xx: Add ready GPIO signal Message-ID: <20181104121314.GU23864@amd> References: <20181010170936.316862-1-lkundrak@v3.sk> <20181010170936.316862-10-lkundrak@v3.sk> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="kbZGpL0ScFxCd8mt" Content-Disposition: inline In-Reply-To: <20181010170936.316862-10-lkundrak@v3.sk> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --kbZGpL0ScFxCd8mt Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed 2018-10-10 19:09:34, Lubomir Rintel wrote: > This this is used to let the SPI master know that our FIFO is filled and > we're ready to service a transfer. Only useful in slave mode. >=20 > A signal like this is used by an embedded controller on a OLPC XO 1.75 > machine, that happens to be a SPI master. >=20 > Signed-off-by: Lubomir Rintel Acked-by: Pavel Machek > --- > Documentation/devicetree/bindings/spi/spi-pxa2xx.txt | 2 ++ > 1 file changed, 2 insertions(+) >=20 > diff --git a/Documentation/devicetree/bindings/spi/spi-pxa2xx.txt b/Docum= entation/devicetree/bindings/spi/spi-pxa2xx.txt > index 89b2832283e3..681a82b40e6f 100644 > --- a/Documentation/devicetree/bindings/spi/spi-pxa2xx.txt > +++ b/Documentation/devicetree/bindings/spi/spi-pxa2xx.txt > @@ -12,6 +12,8 @@ Optional properties: > - cs-gpios: list of GPIO chip selects. See the SPI bus bindings, > Documentation/devicetree/bindings/spi/spi-bus.txt > - spi-slave: Empty property indicating the SPI controller is used in sla= ve mode. > +- ready-gpio: GPIO used to signal a SPI master that the FIFO is filled > + and we're ready to service a transfer. Only useful in slave mode. > =20 > Child nodes represent devices on the SPI bus > See ../spi/spi-bus.txt --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --kbZGpL0ScFxCd8mt Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlve4loACgkQMOfwapXb+vJAEACeLnzOenWyJ9mVWkVKlX/SZ0BI BgQAn1ykaXNIbZT3Pw/0VFrLn8Nqqw8D =Wloq -----END PGP SIGNATURE----- --kbZGpL0ScFxCd8mt--