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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 D1276C433ED for ; Fri, 16 Apr 2021 17:46:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AAA4F60FF3 for ; Fri, 16 Apr 2021 17:46:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243550AbhDPRqy (ORCPT ); Fri, 16 Apr 2021 13:46:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59724 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243541AbhDPRqw (ORCPT ); Fri, 16 Apr 2021 13:46:52 -0400 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C7386C061574 for ; Fri, 16 Apr 2021 10:46:24 -0700 (PDT) Received: by mail-pj1-x1031.google.com with SMTP id s14so9563276pjl.5 for ; Fri, 16 Apr 2021 10:46:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=7wXuYb2sAQupo2LG+aIJB2xPslEGiIuMvjBT329yg3U=; b=J5PjHQGscCeSuO/gbZXuoewf8jGW9qKmFdTqS24XZn2uTUgChpjgJRSE0zIyVx56Wh K6ruEk05Qdf/5KJuHfJh2gsM6DgcJMLk5XKJdzJRHkL5lactllzN9rrVHBS3m4GBuPHW eErmAOFfOjDA/Gt40EEImNaXyzYe9+WbtA+ropKWwpYzYE1tOk8HmAhaJuhfg8l14tS1 CfAvjkhATJRg+pCAjnA8NuY+7lDvuXhPFECRnCp9ZI6N07vSV0SN/rLQq6OvPXv2/Jtt nNvYqgvphMkTuvocMNUxcBqqrnKDOd6jNIrLIhFiOp9Oxgy7/iZfIezi6KBvTcO48Upy qVRw== 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; bh=7wXuYb2sAQupo2LG+aIJB2xPslEGiIuMvjBT329yg3U=; b=jXLYqenzj0uJahLoiCuzLtv/a+P6LyV1TZxbyIQGlVq1peYOgsAWsTtGSV6ckWPajD K5y8ktaLuK5gytISPzYcqXUIYXZZUJfZpk2pyK/BI6XUeuTlbH1MpZTatJ1Y5XCbna9q lsdVp/xQdcIQaXFXcHTgIGKOJ1TgkTtY/Pk8HERx2w3NAKhbe6g9Oax17ra1uKIIRXDS KoT+NsskbIOjTC//e6Av5lI3ufUAqt36U6Ok8YArCVCDHv30UKCJyTjYIjFT2mPJr9zQ epiHsoOn+tauCdZA8BUKkneTaRNPcT1rt4yy9LdQD/NXne5G7nrOrG7gyGQDUj2p5pY4 255Q== X-Gm-Message-State: AOAM530VzrOZROO2m4GssUTNMcmZbR78qId8TvcgT+jNMlMEH1+/kTF5 VkL3QAeVfGw7CQfCMkIHtDTdGw== X-Google-Smtp-Source: ABdhPJzfFYb59axooQ1Dcvl2ibVjHLLezR7oN3SWOQimhjaIEN5XT1qNMQndTGWqeZYEeUsA9MoKxA== X-Received: by 2002:a17:902:f1d3:b029:ec:7b6e:5826 with SMTP id e19-20020a170902f1d3b02900ec7b6e5826mr4473776plc.22.1618595184388; Fri, 16 Apr 2021 10:46:24 -0700 (PDT) Received: from xps15 (S0106889e681aac74.cg.shawcable.net. [68.147.0.187]) by smtp.gmail.com with ESMTPSA id w123sm1891141pfb.109.2021.04.16.10.46.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Apr 2021 10:46:24 -0700 (PDT) Date: Fri, 16 Apr 2021 11:46:22 -0600 From: Mathieu Poirier To: peng.fan@oss.nxp.com Cc: ohad@wizery.com, bjorn.andersson@linaro.org, o.rempel@pengutronix.de, robh+dt@kernel.org, devicetree@vger.kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-remoteproc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Peng Fan Subject: Re: [PATCH V4 6/8] remoteproc: imx_rproc: make clk optional Message-ID: <20210416174622.GC1050209@xps15> References: <1618493261-32606-1-git-send-email-peng.fan@oss.nxp.com> <1618493261-32606-7-git-send-email-peng.fan@oss.nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1618493261-32606-7-git-send-email-peng.fan@oss.nxp.com> Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org On Thu, Apr 15, 2021 at 09:27:39PM +0800, peng.fan@oss.nxp.com wrote: > From: Peng Fan > > To i.MX7ULP, M4 is the master to control everything, no need to provide > clk from Linux side. So make clk optional when method is IMX_RPROC_NONE. > > Signed-off-by: Peng Fan > --- > drivers/remoteproc/imx_rproc.c | 46 ++++++++++++++++++++++++++++-------------- > 1 file changed, 31 insertions(+), 15 deletions(-) > > diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c > index 2b633fd..56dfcc1 100644 > --- a/drivers/remoteproc/imx_rproc.c > +++ b/drivers/remoteproc/imx_rproc.c > @@ -606,6 +606,35 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv) > return 0; > } > > +static int imx_rproc_clk_enable(struct imx_rproc *priv) > +{ > + const struct imx_rproc_dcfg *dcfg = priv->dcfg; > + struct device *dev = priv->dev; > + int ret; > + > + /* Remote core is not under control of Linux */ > + if (dcfg->method == IMX_RPROC_NONE) > + return 0; > + > + priv->clk = devm_clk_get(dev, NULL); > + if (IS_ERR(priv->clk)) { > + dev_err(dev, "Failed to get clock\n"); > + return PTR_ERR(priv->clk); > + } > + > + /* > + * clk for M4 block including memory. Should be > + * enabled before .start for FW transfer. > + */ > + ret = clk_prepare_enable(priv->clk); > + if (ret) { > + dev_err(dev, "Failed to enable clock\n"); > + return ret; > + } > + > + return 0; > +} > + > static int imx_rproc_probe(struct platform_device *pdev) > { > struct device *dev = &pdev->dev; > @@ -654,22 +683,9 @@ static int imx_rproc_probe(struct platform_device *pdev) > if (ret) > goto err_put_mbox; > > - priv->clk = devm_clk_get(dev, NULL); > - if (IS_ERR(priv->clk)) { > - dev_err(dev, "Failed to get clock\n"); > - ret = PTR_ERR(priv->clk); > - goto err_put_mbox; > - } > - > - /* > - * clk for M4 block including memory. Should be > - * enabled before .start for FW transfer. > - */ > - ret = clk_prepare_enable(priv->clk); > - if (ret) { > - dev_err(&rproc->dev, "Failed to enable clock\n"); > + ret = imx_rproc_clk_enable(priv); > + if (ret) Much better Reviewed-by: Mathieu Poirier > goto err_put_mbox; > - } > > INIT_WORK(&priv->rproc_work, imx_rproc_vq_work); > > -- > 2.7.4 >