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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2DB39E71068 for ; Thu, 21 Sep 2023 12:52:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=/hqUc+pDZ227si4BasKap7Npg1JqpF4WoevzrN2pIOU=; b=AcFe9r6HV4AVZF 8LgPd4BiNKMtOTH4krct5fjhi+x9I3d6OLSy8J2eUwt3cG4xg0gUa11P0cEpaT0J+iN3mvZWkNp0q zb/Pd1j6OhZvyN+v3qvredyXN8+ImNLgpOtSYUvNRLilSyOmw9y/4Ocjcrh9noQILkAQaTdLeZjMx kE5VMRMJKNcgRTLBpMqm7lkxijp3XjNemTGdw3KuwOG2U39Aw1/VetSxdYG5pOQeog9cZmmS48bFR U1EqcR3VwlN4RBrU1lb4IZWjv9PFj9Iqkvq39svKBQjU8ORJiR2ix4nw94E+I3tx6FbIk/8BLY8aR M1lUlILz3fM6+hGJQJIA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qjJ9o-0063oa-0F; Thu, 21 Sep 2023 12:51:48 +0000 Received: from mail-ej1-x633.google.com ([2a00:1450:4864:20::633]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qjJ9b-0063kS-0S for linux-arm-kernel@lists.infradead.org; Thu, 21 Sep 2023 12:51:37 +0000 Received: by mail-ej1-x633.google.com with SMTP id a640c23a62f3a-99c3d3c3db9so117192266b.3 for ; Thu, 21 Sep 2023 05:51:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1695300691; x=1695905491; darn=lists.infradead.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=b7aGXpKSZd0nkaqg7goI4xd52TS77NJzRSHYqFQggM8=; b=IPu55qaGm2F4go2qOb0+ZM/p9FhLUScrTXEptdZQXcZEX9u0xM9G+LRGeTj7OKL/v2 Dm2Wn+M5SYmoEAIySiB5Z52gk9W6MUGS+kp2fCLtgjvAMbXburCmn3p5TFL5sJ7wqy7u aRpsUCNCBlcDzxmWbMWihROV8tXNmQUS/zCsMJtoA0dZfYi9o8df8MIt16gzzWVQ7zjp K88uGUE94sUAAM76zaVWjH5Bw7hvji86lkMeuythQ0zkYQlg8b2YNB77hTmH+2ddZLAd mDQtaET2PK31JCV3nTHJccsuDxMXU+mLecbDV3DwULn33QohzRYaShiN1izRzyRP1i6p yLtg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695300691; x=1695905491; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=b7aGXpKSZd0nkaqg7goI4xd52TS77NJzRSHYqFQggM8=; b=aGz3Nu/tC+rTeckweKdgUI1DVbS2AB17FW/su2ydmJBjbZzvmcf/nfiBv/7RDvPPTA ugKvI7xacETLeo5XOx0Hyy90Mz/25Zqo/WAbxSunbImdbetDnpNkTsc9FtdfpMgkyeGo kI4eoO4sHwMc6RJB2ym0WudZqF89QoADrXGWwYWJdydUFCujG6H1G2cKBa02Mji5b94A cDffZDt09aPGcI5yiMDbltv56h8x5X5siZNb6klrZFJq/4C07xj18Eh32UFTwgN1gh+b i+3awkZN8Qgen09XSjbcNjzxqctRaru7EO8nYK57l4ZZiRaaFQjTTQofCAMPQdkA9pI2 HUhw== X-Gm-Message-State: AOJu0YyMPXV1ur12bmhcVI/iRDvklsnELqdrRhPmObaombk6psudMlWF M5NPX6cQ40CzkjIdhNcZxHOvGw== X-Google-Smtp-Source: AGHT+IEUZqEOYV4M6SlzSpxNp5dBDgvjEldvmzJ6hEHHcdY4tYiha+4k/ZKwAc0oUEQlmz9ki3DsiQ== X-Received: by 2002:a17:906:29a:b0:9ae:522e:8f71 with SMTP id 26-20020a170906029a00b009ae522e8f71mr3578502ejf.7.1695300691322; Thu, 21 Sep 2023 05:51:31 -0700 (PDT) Received: from p14s (static-212-193-78-212.thenetworkfactory.nl. [212.78.193.212]) by smtp.gmail.com with ESMTPSA id lz1-20020a170906fb0100b0099b5a71b0bfsm1002039ejb.94.2023.09.21.05.51.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Sep 2023 05:51:30 -0700 (PDT) Date: Thu, 21 Sep 2023 06:51:29 -0600 From: Mathieu Poirier To: AngeloGioacchino Del Regno Cc: andersson@kernel.org, matthias.bgg@gmail.com, tinghan.shen@mediatek.com, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, wenst@chromium.org, kernel@collabora.com Subject: Re: [PATCH] remoteproc: mediatek: Refactor single core check and fix retrocompatibility Message-ID: References: <20230919092336.51007-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230919092336.51007-1-angelogioacchino.delregno@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230921_055135_187124_3C97B98F X-CRM114-Status: GOOD ( 21.38 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Sep 19, 2023 at 11:23:36AM +0200, AngeloGioacchino Del Regno wrote: > In older devicetrees we had the ChromeOS EC in a node called "cros-ec" > instead of the newer "cros-ec-rpmsg", but this driver is now checking > only for the latter, breaking compatibility with those. > > Besides, we can check if the SCP is single or dual core by simply > walking through the children of the main SCP node and checking if > if there's more than one "mediatek,scp-core" compatible node. > > Fixes: 1fdbf0cdde98 ("remoteproc: mediatek: Probe SCP cluster on multi-core SCP") > Signed-off-by: AngeloGioacchino Del Regno > --- > drivers/remoteproc/mtk_scp.c | 18 +++++++----------- > 1 file changed, 7 insertions(+), 11 deletions(-) > Applied. Thanks, Mathieu > diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c > index ea227b566c54..a35409eda0cf 100644 > --- a/drivers/remoteproc/mtk_scp.c > +++ b/drivers/remoteproc/mtk_scp.c > @@ -1144,29 +1144,25 @@ static int scp_add_multi_core(struct platform_device *pdev, > return ret; > } > > -static int scp_is_single_core(struct platform_device *pdev) > +static bool scp_is_single_core(struct platform_device *pdev) > { > struct device *dev = &pdev->dev; > struct device_node *np = dev_of_node(dev); > struct device_node *child; > + int num_cores = 0; > > - child = of_get_next_available_child(np, NULL); > - if (!child) > - return dev_err_probe(dev, -ENODEV, "No child node\n"); > + for_each_child_of_node(np, child) > + if (of_device_is_compatible(child, "mediatek,scp-core")) > + num_cores++; > > - of_node_put(child); > - return of_node_name_eq(child, "cros-ec-rpmsg"); > + return num_cores < 2; > } > > static int scp_cluster_init(struct platform_device *pdev, struct mtk_scp_of_cluster *scp_cluster) > { > int ret; > > - ret = scp_is_single_core(pdev); > - if (ret < 0) > - return ret; > - > - if (ret) > + if (scp_is_single_core(pdev)) > ret = scp_add_single_core(pdev, scp_cluster); > else > ret = scp_add_multi_core(pdev, scp_cluster); > -- > 2.42.0 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel