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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 34D74C433FE for ; Fri, 25 Nov 2022 01:41:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229563AbiKYBj4 (ORCPT ); Thu, 24 Nov 2022 20:39:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229644AbiKYBjp (ORCPT ); Thu, 24 Nov 2022 20:39:45 -0500 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6F99F2A72D for ; Thu, 24 Nov 2022 17:38:56 -0800 (PST) Received: from dggpemm500021.china.huawei.com (unknown [172.30.72.57]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4NJHZ501bpzmW83; Fri, 25 Nov 2022 09:38:21 +0800 (CST) Received: from dggpemm500002.china.huawei.com (7.185.36.229) by dggpemm500021.china.huawei.com (7.185.36.109) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Fri, 25 Nov 2022 09:38:43 +0800 Received: from [10.174.178.247] (10.174.178.247) by dggpemm500002.china.huawei.com (7.185.36.229) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Fri, 25 Nov 2022 09:38:43 +0800 Subject: =?UTF-8?B?UmU6IFJl77yaUmU6IFtQQVRDSCAzLzNdIGFybV9zY3BpOiBtb2RpZnkg?= =?UTF-8?Q?to_support_acpi?= To: =?UTF-8?B?546L5rSq6L6J?= , Sudeep Holla CC: Mark Rutland , Cristian Maruss , Jassi Brar , linux-arm-kernel , linux-kernel References: From: Hanjun Guo Message-ID: <9732f012-f2f5-d770-c9b7-6005fa0c578f@huawei.com> Date: Fri, 25 Nov 2022 09:38:42 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="gb18030"; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 8bit X-Originating-IP: [10.174.178.247] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm500002.china.huawei.com (7.185.36.229) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Honghui, On 2022/11/24 22:17, Íõºé»Ô wrote: > Thanks! > > The uefi firmware was built include ACPI/AML, but current kernel code is not able to extract the info, the ACPI/AML driver of kernel is not enough for majority of devices , but fdt driver is. I think there's a lot of work to support more acpi driver. I think the firmware did the wrong thing about SCPI support, please take a look at ACPI 6.5, chapter 14 Platform Communications Channel (PCC). Thanks Hanjun