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=-9.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 ADB8CC433E0 for ; Tue, 19 Jan 2021 23:38:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7BEA022E01 for ; Tue, 19 Jan 2021 23:38:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729904AbhASXie (ORCPT ); Tue, 19 Jan 2021 18:38:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47236 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2395026AbhASOE4 (ORCPT ); Tue, 19 Jan 2021 09:04:56 -0500 Received: from mail-qk1-x72d.google.com (mail-qk1-x72d.google.com [IPv6:2607:f8b0:4864:20::72d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 983FBC061573; Tue, 19 Jan 2021 06:04:05 -0800 (PST) Received: by mail-qk1-x72d.google.com with SMTP id c7so21881127qke.1; Tue, 19 Jan 2021 06:04:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=EDeK0lzTgoH/F/4wDr6SvtdsoHPqaLFNgf6XdA+ur08=; b=mXBWNhqE4/90NeQXsy/H9x94t4yJ2FiofbnRAcVcCoUHkHfII5ZSAq3LJ7rW9b4VId UsQ5WpozSto+hnbLJlqTyyVAO8l0fRfHFfiFggtjo/fNCqoEuESU+hrZN5dwaREwawKL ZS2uhSVh+Sw5C6pylIjA55AIP3yAzYDKSPoj6JROvHcOgGkLN2MuzsigCDDLBjaJyegz l30Qe3uRxCxBH4nBYh2Cs1V+fg4mNjV3J1JEXjPxB8dHAAvyuNr9bvVBfJvwxeOeVC0t Tfx5PgxhkzAEg5hCOK2Wc+EevWHTPbbntgo9kQ0t009N7aUg/Oa0w6xh/gleWlQL6a/G En/Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=EDeK0lzTgoH/F/4wDr6SvtdsoHPqaLFNgf6XdA+ur08=; b=dmQoBvg2z+/O6HuTW7yoGN3xcd4XcARyYHMEHnFIIyFwUybfOeYu8Afy4kmGFFK3uD XOPF2HS6a2k9PzmVXkQB98Mffp3U9cnqYM2DnhajrwhnGste5u8WDQetIVly03uny4dv zM4QIJMH8pOzTCxJcF53+1kQmif87VzFS1FmuEA8zjUQhsh597ZsXCITp5kDGv+hPhJD 7jEYUQENYJKHT+bXuyPwyOGYG0S6lQJkjJ7+xubfxU+FhJvGI30k70ijYhNh8iGViRFG chpk427disbhpqoHk6DhmF42OdERuVd3TGkWAGPY9rMQ8rp2yA9MhvLpoKBHvv6Ph2Er En4w== X-Gm-Message-State: AOAM530E9css3z3PftcVCTR5pWWsTgcsMkQXcCc9YCTwLCxbu2kja9qA 9Vy9h/gOz+wC9dwkp/0y+NM= X-Google-Smtp-Source: ABdhPJyokyoVbgPCCEuLApBDGnb/D0dHQEpI6NDrkAwHwHHCpLjaKTrln+enuDkwKhlqxhEiKUWJNw== X-Received: by 2002:a37:4f4a:: with SMTP id d71mr4489426qkb.55.1611065044747; Tue, 19 Jan 2021 06:04:04 -0800 (PST) Received: from localhost ([62.96.65.119]) by smtp.gmail.com with ESMTPSA id k187sm13007651qkc.74.2021.01.19.06.04.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Jan 2021 06:04:02 -0800 (PST) Date: Tue, 19 Jan 2021 15:04:00 +0100 From: Thierry Reding To: JC Kuo Cc: gregkh@linuxfoundation.org, robh@kernel.org, jonathanh@nvidia.com, kishon@ti.com, linux-tegra@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, nkristam@nvidia.com Subject: Re: [PATCH v6 14/15] usb: host: xhci-tegra: Unlink power domain devices Message-ID: References: <20210119085546.725005-1-jckuo@nvidia.com> <20210119085546.725005-15-jckuo@nvidia.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="9nt/UnHYaVisIkOl" Content-Disposition: inline In-Reply-To: <20210119085546.725005-15-jckuo@nvidia.com> User-Agent: Mutt/2.0.4 (26f41dd1) (2020-12-30) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --9nt/UnHYaVisIkOl Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jan 19, 2021 at 04:55:45PM +0800, JC Kuo wrote: > This commit unlinks xhci-tegra platform device with SS/host power > domain devices. Reasons for this change is - at ELPG entry, PHY > sleepwalk and wake configuration need to be done before powering > down SS/host partitions, and PHY need be powered off after powering > down SS/host partitions. Sequence looks like roughly below: >=20 > tegra_xusb_enter_elpg() -> xhci_suspend() > -> enable PHY sleepwalk and wake if needed > -> power down SS/host partitions > -> power down PHY >=20 > If SS/host power domains are linked to xhci-tegra platform device, we > are not able to perform the sequence like above. >=20 > This commit introduces: > 1. tegra_xusb_unpowergate_partitions() to power up SS and host > partitions together. If SS/host power domain devices are > available, it invokes pm_runtime_get_sync() to request power > driver to power up partitions; If power domain devices are not > available, tegra_powergate_sequence_power_up() will be used to > power up partitions. >=20 > 2. tegra_xusb_powergate_partitions() to power down SS and host > partitions together. If SS/host power domain devices are > available, it invokes pm_runtime_put_sync() to request power > driver to power down partitions; If power domain devices are not > available, tegra_powergate_power_off() will be used to power down > partitions. >=20 > Signed-off-by: JC Kuo Acked-by: Thierry Reding --9nt/UnHYaVisIkOl Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiOrDCAFJzPfAjcif3SOs138+s6EFAmAG5tAACgkQ3SOs138+ s6HtZg//YATKR0XCFqPsQh+D3HoLvJv6I3p39ntPOPsmRwuP5GJj+Z3Jb1pKbTwH Kkf1V5pqOoMCgViGa/HVvqOokgs9JffGHDg67oLQqXnZv7KFoh7r9xpsFZkF0anG 5RB7ygKIf9o7e6IZQDX9XWM25diE4dQ/lrfY/cKYEEcIXBNeEtbIDe9lxydUPWxW zcL8qfW2woN8iq/Nl4po2h8fZb3BvPn4zZBVdQJP4FxQF5HGNJJABVXeh10yZzHL /CmD0ekojMtRiNSQUtxr7AlD/Vq9YqPkVNgZc/prhoTVswlJPO9tSO3hVYPDRpU4 HIqro3nRsg5BjA6JQGAfO1qP2I3jyo+r5WIbVrBzVP0fRZxbtzTt7Y9juieqgc+l 9gEPhSqUMupHAXgs+x1V5WzxOVRh+h67uIYsxfFSWRrXlvUScefdZE2bMCcUgJxe DDm5/39okjToZafBcvvC2R5Ky7i2qM+KW+3I7dNO93rIdDIzk9GmoXeq8SKCSDei lLjHZD4OZWKWHh3j5tIUsIqPQvOd6Oqf8HbNDpj5aN8l+YHWH2Q5DalqL/BXLgdD WFYPuQi9Azrj3z9dMm7E68w8VHAc0yNhpieLpYPihIJDfEGTnxV3Omvb72ZgFG7R hoA5lXMMf2GN25yq3gYtWzNITEaTtnrpv+EuPkJ3gMSOROi7OH8= =g0x5 -----END PGP SIGNATURE----- --9nt/UnHYaVisIkOl--