From patchwork Thu May 25 15:22:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 685742 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EB74DC7EE2D for ; Thu, 25 May 2023 15:24:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241648AbjEYPYk (ORCPT ); Thu, 25 May 2023 11:24:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58286 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241201AbjEYPYk (ORCPT ); Thu, 25 May 2023 11:24:40 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 51F3AA3; Thu, 25 May 2023 08:24:39 -0700 (PDT) Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.226]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4QRsHd2vpDz67htt; Thu, 25 May 2023 23:22:37 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Thu, 25 May 2023 16:24:37 +0100 From: Jonathan Cameron To: CC: Wolfram Sang , Niyas Sait , Klaus Jensen , Andy Shevchenko , , Jeremy Kerr , Matt Johnston , Shesha Bhushan Sreenivasamurthy , , , "Viacheslav A . Dubeyko" Subject: [RFC PATCH 5/6] HACK: i2c: aspeed: Comment the clock and reset out. Date: Thu, 25 May 2023 16:22:02 +0100 Message-ID: <20230525152203.32190-6-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230525152203.32190-1-Jonathan.Cameron@huawei.com> References: <20230525152203.32190-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml500003.china.huawei.com (7.191.162.67) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Needs tidying up - hopefully can do clock right using on going work from Niyas https://linaro.atlassian.net/wiki/spaces/CLIENTPC/pages/28832333867/ACPI+Clock+Management Don't think ACPI provide an equivalent reset deasert / assert. _RST doesn't fit that model. Signed-off-by: Jonathan Cameron --- drivers/i2c/busses/i2c-aspeed.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c index adbb93444d7a..df20382970f3 100644 --- a/drivers/i2c/busses/i2c-aspeed.c +++ b/drivers/i2c/busses/i2c-aspeed.c @@ -986,20 +986,21 @@ static int aspeed_i2c_probe_bus(struct platform_device *pdev) if (IS_ERR(bus->base)) return PTR_ERR(bus->base); - parent_clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(parent_clk)) - return PTR_ERR(parent_clk); - bus->parent_clk_frequency = clk_get_rate(parent_clk); + // parent_clk = devm_clk_get(&pdev->dev, NULL); + // if (IS_ERR(parent_clk))// + // return PTR_ERR(parent_clk); + bus->parent_clk_frequency = 1000000;//clk_get_rate(parent_clk); /* We just need the clock rate, we don't actually use the clk object. */ - devm_clk_put(&pdev->dev, parent_clk); + //devm_clk_put(&pdev->dev, parent_clk); bus->rst = devm_reset_control_get_shared(&pdev->dev, NULL); if (IS_ERR(bus->rst)) { - dev_err(&pdev->dev, + dev_warn(&pdev->dev, "missing or invalid reset controller device tree entry\n"); - return PTR_ERR(bus->rst); + bus->rst = 0; + } else { + reset_control_deassert(bus->rst); } - reset_control_deassert(bus->rst); ret = device_property_read_u32(&pdev->dev, "bus-frequency", &bus->bus_frequency);