From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 086E21C93A9; Wed, 21 Aug 2024 09:01:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724230865; cv=none; b=Ymog0VzbIhpMwsuyrAS2eTFhuWH9Yc+RSd1t+m7E3cfY+cdtIyzzK58Q94grGOtsJJwF0bBLKVEvTxTWstg6tf8QZlaA9qTbKFtISSMF3sCX6YGQnnA6DpMA9r6Ssd3BbYnsPyRV2SiWcUsfPEwpjWtQppULJA6HCN4z5lG85xA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724230865; c=relaxed/simple; bh=2G4lmVJYJdg1XmNfOHPJL0lvj+y+GJhPa4tXV1E0Uhg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=SwbDdozrOBDEXNZZHq8iydMIN8yQDGF4hSYXUuIhrBhJY1v+MwS0Sd2b/vOyVT7O3BMvyErd9O0nzeXmkf/WZTdkD+IaAqIXXLcnyehDfgyKKbcse1w64JnY0qJHOkuM7BjDzSpY86V/h8nmBLJL9nWdYMk0AVLcCBYbsGDh6po= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WePKUzf0; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="WePKUzf0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 329A3C32782; Wed, 21 Aug 2024 09:00:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724230864; bh=2G4lmVJYJdg1XmNfOHPJL0lvj+y+GJhPa4tXV1E0Uhg=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=WePKUzf0lACwBXiRC3KE9leaJ1UzxoGlncYk3zQ+Ik7kPmEEys8iKwP27dgwZflrd kYAbvAH5JxGhicx2+OceWCueMxRTDUH8IzdmSMmzhryXEJZ3vH/mLLe/Vbe2JnKVqw T2tdsri/XMQYAL30kPWDF9tu6PmiNTHxFywF8CQA7kcFII7FF5MnR8s/WdqmM9I73c bG4jS7yLkd0YIUSjc+aAezvi8LhswvHtjl0CuJL4ZIfHTvRCyrHURT6Y12uappZ5tt rtl0psDosVhS6i9PaMFSHACuvcfMzo9s6sYnrr9ke8KhaS6SqgPl6ONr7BXtWwr4Hs JoIl4kCm+jyfw== Message-ID: <25b487b7-63e0-402d-a0a2-ed9d03e82630@kernel.org> Date: Wed, 21 Aug 2024 11:00:56 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/4] memory: mtk-smi: mt8188: Add SMI clamp function To: "friday.yang" , Rob Herring , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno Cc: Yong Wu , Philipp Zabel , linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Project_Global_Chrome_Upstream_Group@mediatek.com References: <20240821082845.11792-1-friday.yang@mediatek.com> <20240821082845.11792-4-friday.yang@mediatek.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 21/08/2024 10:26, friday.yang wrote: > In order to avoid handling glitch signal when MTCMOS on/off, SMI need > clamp and reset operation. Parse power reset settings for LARBs which > need to reset. Register genpd callback for SMI LARBs and apply reset > operations in the callback. > > Signed-off-by: friday.yang > --- > drivers/memory/mtk-smi.c | 148 ++++++++++++++++++++++++++++++++++++++- > 1 file changed, 146 insertions(+), 2 deletions(-) > ... > + > +static int mtk_smi_larb_parse_reset_info(struct mtk_smi_larb *larb) > +{ > + struct device_node *reset_node; > + struct device *dev = larb->dev; > + int ret; > + > + /* only larb with "resets" need to get reset setting */ > + reset_node = of_parse_phandle(dev->of_node, "resets", 0); Nope, you do not parse rasets. > + if (!reset_node) > + return 0; > + of_node_put(reset_node); > + > + larb->rst_con = devm_reset_control_get(dev, "larb_rst"); Where are the bindings? Why do you add undocumented properties? How possible this passes dtbs_check??? > + if (IS_ERR(larb->rst_con)) > + return dev_err_probe(dev, PTR_ERR(larb->rst_con), > + "cannot get larb reset controller\n"); > + > + larb->nb.notifier_call = mtk_smi_genpd_callback; > + ret = dev_pm_genpd_add_notifier(dev, &larb->nb); > + if (ret) { > + dev_err(dev, "Failed to add genpd callback %d\n", ret); > + return -EINVAL; > + } > + > + return 0; > +} > + > static int mtk_smi_larb_probe(struct platform_device *pdev) > { > struct mtk_smi_larb *larb; > @@ -538,6 +662,7 @@ static int mtk_smi_larb_probe(struct platform_device *pdev) > if (!larb) > return -ENOMEM; > > + larb->dev = dev; > larb->larb_gen = of_device_get_match_data(dev); > larb->base = devm_platform_ioremap_resource(pdev, 0); > if (IS_ERR(larb->base)) > @@ -554,15 +679,29 @@ static int mtk_smi_larb_probe(struct platform_device *pdev) > if (ret < 0) > return ret; > > - pm_runtime_enable(dev); > + /* find sub common to clamp larb for ISP software reset */ > + ret = mtk_smi_larb_parse_clamp_info(larb); > + if (ret) { > + dev_err(dev, "Failed to get clamp setting for larb\n"); > + goto err_pm_disable; > + } > + > + ret = mtk_smi_larb_parse_reset_info(larb); > + if (ret) { > + dev_err(dev, "Failed to get power setting for larb\n"); > + goto err_pm_disable; > + } > + > platform_set_drvdata(pdev, larb); > ret = component_add(dev, &mtk_smi_larb_component_ops); > if (ret) > goto err_pm_disable; > + > + pm_runtime_enable(dev); > + > return 0; > > err_pm_disable: > - pm_runtime_disable(dev); > device_link_remove(dev, larb->smi_common_dev); Label asls pm disable. Where is the pm disable? > return ret; > } > @@ -686,6 +825,10 @@ static const struct mtk_smi_common_plat mtk_smi_common_mt8188_vpp = { > .init = mtk_smi_common_mt8195_init, > }; Best regards, Krzysztof