From patchwork Tue Aug 17 01:27:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 498542 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=-15.8 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,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 57B17C4338F for ; Tue, 17 Aug 2021 01:32:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3E08560F11 for ; Tue, 17 Aug 2021 01:32:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239399AbhHQBdD (ORCPT ); Mon, 16 Aug 2021 21:33:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48048 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237138AbhHQBbC (ORCPT ); Mon, 16 Aug 2021 21:31:02 -0400 Received: from mail-lf1-x12d.google.com (mail-lf1-x12d.google.com [IPv6:2a00:1450:4864:20::12d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 322B4C06129F; Mon, 16 Aug 2021 18:30:29 -0700 (PDT) Received: by mail-lf1-x12d.google.com with SMTP id g13so38108053lfj.12; Mon, 16 Aug 2021 18:30:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=XL4BVrLk7WYd6afEPPAKr2OvrAlyWTvGqySuaSzvsoU=; b=akMX2IQiN5C+wsFejbQ7AaZ+aEU812b5i7ElnI7gcJqxm1qRG/X5nkz7zPNl/SEuMH QYUoyowBTGQltjI7rFnyUsvx1P3XCb2OTN8HMc5ZVPvu356dI6iNPo+FE1gI3G2skcAZ zA06NlaJ0U14aSpiH7ZYOwXfSia2rN6scqCmOQTUapIIluAVOffKIxK+c1yKDRTvbUY2 3HH/mdwiEU/wLbJGKSQojE13f0Fb0t1wG+JFucgpENZr3k6Vt8XgEIqnJmTsyJD5X4NS LYXnAFgRsIPnmTCV8x/cfPZl/+PqCsMY81oJpWDePTLH7Xxhs3PQ8mSYbT1yqTQ/4Y3Y RO/g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=XL4BVrLk7WYd6afEPPAKr2OvrAlyWTvGqySuaSzvsoU=; b=c/wXP+9ipz51ZJpp+QoM0kEgjToHlMXbVr5oFeuNhZ1HPe/JXQfmp8niX0d8XdzrBg w/AD963gJt5rkzOx7y333fxAAWro+CABQGqEKeaSOpcTw4rm5kLvuDCJ3L2zMVyYarrH I7JnNoUbrlvXYlXPQJFo4+SMMXGf4NqqrWgBaUlIJDacNA/gf6oh3qrDsFjR8XLnRPyi YUCvabp4caEmJzCjzMGVH89GOOWufnTF9fFshWYyxwrDth9RImbMiBDpIr10tAAQDnvw P5ZtMBLHy28cJ/TyS+R24xdODXtWdZ3bdO+KSHz7i4+SPffR8BgYIDJ/O/AIon17RE4S cMFw== X-Gm-Message-State: AOAM533sCTFCuMO7pjXGxYNum9e6pTH2jircv/sTRhfIqM7H4r8LGcxu 4YHDfagCWGsPZbWnmTyFoi0= X-Google-Smtp-Source: ABdhPJw02p9RsEdccY59vWAtODBKBNtEXdwRJ/qwlwTWkchrOt3IUpFpHFlVjjDlgZH5cc57idRxWQ== X-Received: by 2002:a19:f009:: with SMTP id p9mr516594lfc.227.1629163827643; Mon, 16 Aug 2021 18:30:27 -0700 (PDT) Received: from localhost.localdomain (46-138-85-91.dynamic.spd-mgts.ru. [46.138.85.91]) by smtp.gmail.com with ESMTPSA id g30sm46607lfj.298.2021.08.16.18.30.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Aug 2021 18:30:27 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Ulf Hansson , Viresh Kumar , Stephen Boyd , Peter De Schrijver , Mikko Perttunen , Peter Chen , Mark Brown , Lee Jones , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Nishanth Menon , Vignesh Raghavendra , Richard Weinberger , Miquel Raynal , Lucas Stach , Stefan Agner , Adrian Hunter , Mauro Carvalho Chehab , Rob Herring , Michael Turquette Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-staging@lists.linux.dev, linux-spi@vger.kernel.org, linux-pwm@vger.kernel.org, linux-mtd@lists.infradead.org, linux-mmc@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org Subject: [PATCH v8 22/34] spi: tegra20-slink: Add OPP support Date: Tue, 17 Aug 2021 04:27:42 +0300 Message-Id: <20210817012754.8710-23-digetx@gmail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210817012754.8710-1-digetx@gmail.com> References: <20210817012754.8710-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The SPI on Tegra belongs to the core power domain and we're going to enable GENPD support for the core domain. Now SPI driver must use OPP API for driving the controller's clock rate because OPP API takes care of reconfiguring the domain's performance state in accordance to the rate. Add OPP support to the driver. Signed-off-by: Dmitry Osipenko --- drivers/spi/spi-tegra20-slink.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c index deff16ba6d58..37cb15dc59f7 100644 --- a/drivers/spi/spi-tegra20-slink.c +++ b/drivers/spi/spi-tegra20-slink.c @@ -18,12 +18,15 @@ #include #include #include +#include #include #include #include #include #include +#include + #define SLINK_COMMAND 0x000 #define SLINK_BIT_LENGTH(x) (((x) & 0x1f) << 0) #define SLINK_WORD_SIZE(x) (((x) & 0x1f) << 5) @@ -683,7 +686,7 @@ static int tegra_slink_start_transfer_one(struct spi_device *spi, bits_per_word = t->bits_per_word; speed = t->speed_hz; if (speed != tspi->cur_speed) { - clk_set_rate(tspi->clk, speed * 4); + dev_pm_opp_set_rate(tspi->dev, speed * 4); tspi->cur_speed = speed; } @@ -1054,6 +1057,10 @@ static int tegra_slink_probe(struct platform_device *pdev) goto exit_free_master; } + ret = devm_tegra_core_dev_init_opp_table_simple(&pdev->dev); + if (ret) + return ret; + /* disabled clock may cause interrupt storm upon request */ tspi->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(tspi->clk)) { @@ -1205,6 +1212,12 @@ static int tegra_slink_runtime_resume(struct device *dev) struct tegra_slink_data *tspi = spi_master_get_devdata(master); int ret; + ret = dev_pm_opp_sync(dev); + if (ret) { + dev_err(dev, "failed to sync OPP: %d\n", ret); + return ret; + } + ret = clk_prepare_enable(tspi->clk); if (ret < 0) { dev_err(tspi->dev, "clk_prepare failed: %d\n", ret);