From nobody Sat Oct 4 12:47:32 2025 Received: from sender4-op-o15.zoho.com (sender4-op-o15.zoho.com [136.143.188.15]) (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 60E89287266; Mon, 18 Aug 2025 07:49:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.15 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755503395; cv=pass; b=eQ2D6dvZm8Fgh/vkJ79GS3UZYFQEbZPP9mVi2toNSm0rXnOUWILiWexcuyFwGm2inCvyNYgrJg6Tp6OlgxL1fMLkANz+JpnSoNvf7IBWWI+h5jPmWJAnJTIAG2/CRTfRM210oSECdS9NeMKkvODxKt2OTAo5KjwdDgNdFBvXqOw= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755503395; c=relaxed/simple; bh=STOcfr9kpIp0+CAMrZ593fZOnyRFM2UhBuPuApaF0rQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bLra7Fto+JGZv+eLtILqjyyQUBS0L53jwWtEgDTNnGih0UhRVNhAwyJaDZB1m5FuyM1mRey8nQkTytgytB8JYUyABh+1DUOZAJbiep2QRUnp4cijusmCjJdUnDxgqsWQkJqHhgwFn+9kcX+LxhLCgNQsSAOnL3mHVMZrC5ux62s= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=icenowy.me; spf=pass smtp.mailfrom=icenowy.me; dkim=pass (2048-bit key) header.d=icenowy.me header.i=uwu@icenowy.me header.b=Ejfms6rg; arc=pass smtp.client-ip=136.143.188.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=icenowy.me Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=icenowy.me Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=icenowy.me header.i=uwu@icenowy.me header.b="Ejfms6rg" ARC-Seal: i=1; a=rsa-sha256; t=1755503380; cv=none; d=zohomail.com; s=zohoarc; b=YPOQyiQzZXF7BjL1Ii00u+6sVYI3xgAeVkxi37Ww+CkEHSFo4BgDodEXzfpNMTFTNrKXgHjuTZGrhDhEGQrDt92hhOZeKZ1pUNvBaANQgrsAssvGCFg5zga6Qx302Mdy0qNFbFPFfgO0HB4ZQCeDCrdM6IQW5NUCAf3cCcrPEKU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1755503380; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=v71hNscntsNElHfK1DeG9/bpCIY/+k/7AMAOxJUUKlE=; b=jepRpt1JfkkVP1u2BrfP/96x19UnvZNa+pBaxMOyXjWwrcmo7H5viWbt4b7yiDlKuSwQjNCHZ3aC+VLs6Zml/0xl5IbwkA5Mg7yMnPN0D9i4KPjLgJkxuQrivqwJWVUVM5eIoajmooLCar1LLYmej9lfPCcfd6UcZ04QoaVyFd4= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=icenowy.me; spf=pass smtp.mailfrom=uwu@icenowy.me; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1755503380; s=zmail2; d=icenowy.me; i=uwu@icenowy.me; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Message-Id:Reply-To; bh=v71hNscntsNElHfK1DeG9/bpCIY/+k/7AMAOxJUUKlE=; b=Ejfms6rgpvxnqBcugd3F9yMvH489ENsnfLn+mtnu5VvXjGT/KOM5W79SW5YrQGqa 0ydtUaz20eJMwmqjVx8Ty/83Dr91Tn3ZeVtBjgT1mSsWGaHsgbCIU8gdhsP0ZiQu6i/ ambU/3dMRRTdrtiICHU7euNscxRNmaz1XjIGq48xRlXX1fn3Binls8VADVcgkgzhIRe HMCAjVswspZVRwkhQ9s4+jVA1DsTwEtphNhew1YCa2x6F8dV1heXP9w3T7X+dI9cwmP VX+JC5H8YJDlfH2geKNcuEvEdVGVi0hWb/k5qmoR9FZGTqnCmlePtm8soWpbposg2+R 3Xm+33gFLg== Received: by mx.zohomail.com with SMTPS id 1755503377570478.03956771827745; Mon, 18 Aug 2025 00:49:37 -0700 (PDT) From: Icenowy Zheng To: Drew Fustini , Guo Ren , Fu Wei , Michal Wilczynski , Ulf Hansson , Sebastian Reichel Cc: Han Gao , Yao Zi , linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-pm@vger.kernel.org, Icenowy Zheng Subject: [PATCH 2/2] pmdomain: thead: create auxiliary device for rebooting Date: Mon, 18 Aug 2025 15:49:06 +0800 Message-ID: <20250818074906.2907277-3-uwu@icenowy.me> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250818074906.2907277-1-uwu@icenowy.me> References: <20250818074906.2907277-1-uwu@icenowy.me> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Content-Type: text/plain; charset="utf-8" The reboot / power off operations require communication with the AON firmware too. As the driver is already present, create an auxiliary device with name "reboot" to match that driver, and pass the AON channel by using platform_data. Signed-off-by: Icenowy Zheng Acked-by: Troy Mitchell --- drivers/pmdomain/thead/th1520-pm-domains.c | 35 ++++++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) diff --git a/drivers/pmdomain/thead/th1520-pm-domains.c b/drivers/pmdomain/= thead/th1520-pm-domains.c index 9040b698e7f7f..8285f552897b0 100644 --- a/drivers/pmdomain/thead/th1520-pm-domains.c +++ b/drivers/pmdomain/thead/th1520-pm-domains.c @@ -129,12 +129,39 @@ static void th1520_pd_init_all_off(struct generic_pm_= domain **domains, } } =20 -static void th1520_pd_pwrseq_unregister_adev(void *adev) +static void th1520_pd_unregister_adev(void *adev) { auxiliary_device_delete(adev); auxiliary_device_uninit(adev); } =20 +static int th1520_pd_reboot_init(struct device *dev, struct th1520_aon_cha= n *aon_chan) +{ + struct auxiliary_device *adev; + int ret; + + adev =3D devm_kzalloc(dev, sizeof(*adev), GFP_KERNEL); + if (!adev) + return -ENOMEM; + + adev->name =3D "reboot"; + adev->dev.parent =3D dev; + adev->dev.platform_data =3D aon_chan; + + ret =3D auxiliary_device_init(adev); + if (ret) + return ret; + + ret =3D auxiliary_device_add(adev); + if (ret) { + auxiliary_device_uninit(adev); + return ret; + } + + return devm_add_action_or_reset(dev, th1520_pd_unregister_adev, + adev); +} + static int th1520_pd_pwrseq_gpu_init(struct device *dev) { struct auxiliary_device *adev; @@ -169,7 +196,7 @@ static int th1520_pd_pwrseq_gpu_init(struct device *dev) return ret; } =20 - return devm_add_action_or_reset(dev, th1520_pd_pwrseq_unregister_adev, + return devm_add_action_or_reset(dev, th1520_pd_unregister_adev, adev); } =20 @@ -235,6 +262,10 @@ static int th1520_pd_probe(struct platform_device *pde= v) if (ret) goto err_clean_provider; =20 + ret =3D th1520_pd_reboot_init(dev, aon_chan); + if (ret) + goto err_clean_provider; + return 0; =20 err_clean_provider: --=20 2.50.1