From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfram Sang Subject: Re: [PATCH] i2c: meson: implement the master_xfer_atomic callback Date: Mon, 13 Jan 2020 23:15:32 +0100 Message-ID: <20200113221532.GC2689@ninjato> References: <20200107232901.891177-1-martin.blumenstingl@googlemail.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="+xNpyl7Qekk2NvDX" Return-path: Received: from sauhun.de ([88.99.104.3]:43198 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728943AbgAMWPf (ORCPT ); Mon, 13 Jan 2020 17:15:35 -0500 Content-Disposition: inline In-Reply-To: <20200107232901.891177-1-martin.blumenstingl@googlemail.com> Sender: linux-i2c-owner@vger.kernel.org List-Id: linux-i2c@vger.kernel.org To: Martin Blumenstingl Cc: linux-i2c@vger.kernel.org, linux-amlogic@lists.infradead.org, khilman@baylibre.com, narmstrong@baylibre.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, b.galvani@gmail.com, jian.hu@amlogic.com --+xNpyl7Qekk2NvDX Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Jan 08, 2020 at 12:29:01AM +0100, Martin Blumenstingl wrote: > Boards with some of the 32-bit SoCs (mostly Meson8 and Meson8m2) use a > Ricoh RN5T618 PMU which acts as system power controller. The driver for > the system power controller may need to the I2C bus just before shutting > down or rebooting the system. At this stage the interrupts may be > disabled already. >=20 > Implement the master_xfer_atomic callback so the driver for the RN5T618 > PMU can communicate properly with the PMU when shutting down or > rebooting the board. The CTRL register has a status bit which can be > polled to determine when processing has completed. According to the > public S805 datasheet the value 0 means "idle" and 1 means "running". >=20 > Signed-off-by: Martin Blumenstingl Applied to for-next, thanks! --+xNpyl7Qekk2NvDX Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAl4c7AQACgkQFA3kzBSg KbbuRRAAnOvYecXtAAQlFI9kpCVUGmLW8USmChX+JFEbpguc3uyPI0jnz7hPjLsx 664PGVOPwfaMIfcClLCVM8abtgjyUpbX4AmLrM0mGq5xgYATUCnV85hjcqXIvEKM ecfAR522mRm3ZVSUEJO5UPzwjDY1QxON7BEgY6iRa9F4wLEAXdV3MYXBLkMKK7YR IvX92X/SX30jqLIYfihH1T/5Livk08f3M70GQH8Ngcr1HMK5clSyrVxp2mT4L4o+ Y9RoB7hdhEv96O+oaEfXmeGowe5co+d2JGTbCPT9/Fuo0Curv+ScNbKMrf8dMqW2 +/Qz1EQDsIGd4uh1w/DMmFHslQcVYX3lfKLZASk0rcPs1ofoja5uXEzKvTTCrsgI GImOvyV9hxSFEbpL5ZUY8PHIplRsqpRnMOpeXiK6xmPTQPAE1Tk2eng2uCuvJk1V 0EhFNVHR3pNMw966d+kw+oFOC3hFSR+s4rw7CiOpOI/Cgl6AhLCvrqpqWRF4asfX DvuqSGCH2Z5Li9xuFJHU5kLR8MLX5Y6yeVOPMFCgqhBr22cV5JInznSODpg56WjH V7kmPJOm3HIwgk93ZySC7g5eCOX/h14xK7EWRM42cxv8otcmJfJ85YRxSKAfKjYV ptAxuxClf+v9HsFRGD4ZSMb00igmwTiW9y/E0TiMw4Q01tUtYWY= =pX3/ -----END PGP SIGNATURE----- --+xNpyl7Qekk2NvDX--