From patchwork Fri Oct 8 16:21:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 12545777 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3944C433EF for ; Fri, 8 Oct 2021 16:25:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B42FE61250 for ; Fri, 8 Oct 2021 16:25:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230287AbhJHQ1W (ORCPT ); Fri, 8 Oct 2021 12:27:22 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:59987 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232599AbhJHQ1U (ORCPT ); Fri, 8 Oct 2021 12:27:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1633710325; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+/qOVV3GWWwyv36CwuqsRbEhyl0VVy51ttzWNK0tWNY=; b=PdPk0HC+colX9ceCHhaeZcbuu/tMcvqcfvMlBA1E+Iu+XrAA6kpCnvwnr59cmsEMWGzDN/ /6B8RHMvVOo4bJz74sUVNZihtDhRpS7RglmOz1GWD8bo2n1/jKJow9mJgX6jfqBMZBhtxD svPHr7QPk7ZNrTs4jxj/VbxOsPnoBpk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-561-sxsQn74rOdOoMvEgRFB_7g-1; Fri, 08 Oct 2021 12:25:23 -0400 X-MC-Unique: sxsQn74rOdOoMvEgRFB_7g-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D76E18FA4A3; Fri, 8 Oct 2021 16:23:04 +0000 (UTC) Received: from x1.localdomain (unknown [10.39.192.26]) by smtp.corp.redhat.com (Postfix) with ESMTP id A4FF560BF1; Fri, 8 Oct 2021 16:23:00 +0000 (UTC) From: Hans de Goede To: "Rafael J . Wysocki" , Mark Gross , Andy Shevchenko , Daniel Scally , Laurent Pinchart , Mauro Carvalho Chehab , Liam Girdwood , Mark Brown , Michael Turquette , Stephen Boyd Cc: Hans de Goede , Len Brown , linux-acpi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, Sakari Ailus , Kate Hsuan , linux-media@vger.kernel.org, linux-clk@vger.kernel.org Subject: [PATCH 07/12] platform/x86: int3472: Enable I2c daisy chain Date: Fri, 8 Oct 2021 18:21:16 +0200 Message-Id: <20211008162121.6628-8-hdegoede@redhat.com> In-Reply-To: <20211008162121.6628-1-hdegoede@redhat.com> References: <20211008162121.6628-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org From: Daniel Scally The TPS68470 PMIC has an I2C passthrough mode through which I2C traffic can be forwarded to a device connected to the PMIC as though it were connected directly to the system bus. Enable this mode when the chip is initialised. Signed-off-by: Daniel Scally --- .../x86/intel/int3472/intel_skl_int3472_tps68470.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/platform/x86/intel/int3472/intel_skl_int3472_tps68470.c b/drivers/platform/x86/intel/int3472/intel_skl_int3472_tps68470.c index c05b4cf502fe..42e688f4cad4 100644 --- a/drivers/platform/x86/intel/int3472/intel_skl_int3472_tps68470.c +++ b/drivers/platform/x86/intel/int3472/intel_skl_int3472_tps68470.c @@ -45,6 +45,13 @@ static int tps68470_chip_init(struct device *dev, struct regmap *regmap) return ret; } + /* Enable I2C daisy chain */ + ret = regmap_write(regmap, TPS68470_REG_S_I2C_CTL, 0x03); + if (ret) { + dev_err(dev, "Failed to enable i2c daisy chain\n"); + return ret; + } + dev_info(dev, "TPS68470 REVID: 0x%02x\n", version); return 0;