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 84FC7C433EF for ; Tue, 30 Nov 2021 05:39:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238350AbhK3Fmk (ORCPT ); Tue, 30 Nov 2021 00:42:40 -0500 Received: from mailgw02.mediatek.com ([210.61.82.184]:33816 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S232397AbhK3Fmi (ORCPT ); Tue, 30 Nov 2021 00:42:38 -0500 X-UUID: 7fcca7d58fa54c37b40bdb1e4fce2cb6-20211130 X-UUID: 7fcca7d58fa54c37b40bdb1e4fce2cb6-20211130 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1883285016; Tue, 30 Nov 2021 13:39:09 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Tue, 30 Nov 2021 13:39:07 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 30 Nov 2021 13:39:07 +0800 From: Trevor Wu To: , , , CC: , , , , , , Subject: [PATCH 1/2] ASoC: mediatek: mt8195: support reserved memory assignment Date: Tue, 30 Nov 2021 13:39:04 +0800 Message-ID: <20211130053905.28470-2-trevor.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20211130053905.28470-1-trevor.wu@mediatek.com> References: <20211130053905.28470-1-trevor.wu@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org For security purpose, restrict the memory assess region of AFE memif. The specified memory region should be assigned from DTS. Signed-off-by: Trevor Wu --- sound/soc/mediatek/mt8195/mt8195-afe-pcm.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c b/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c index 2bb05a828e8d..8a6db24116e3 100644 --- a/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c +++ b/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include "mt8195-afe-common.h" #include "mt8195-afe-clk.h" @@ -3061,6 +3062,12 @@ static int mt8195_afe_pcm_dev_probe(struct platform_device *pdev) int i, irq_id, ret; struct snd_soc_component *component; + ret = of_reserved_mem_device_init(dev); + if (ret) { + dev_err(dev, "failed to assign memory region: %d\n", ret); + return ret; + } + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(33)); if (ret) return ret; -- 2.18.0