From patchwork Thu Apr 4 03:48:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sugar Zhang X-Patchwork-Id: 10884865 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8548513B5 for ; Thu, 4 Apr 2019 03:56:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6BB48204BA for ; Thu, 4 Apr 2019 03:56:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 60058286D6; Thu, 4 Apr 2019 03:56:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,RCVD_IN_SORBS_WEB autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 0F18F204BA for ; Thu, 4 Apr 2019 03:56:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=WxbbJez4a1D4EgsWHXwqbrbnG79Y1ciVdVLZ5nDKltk=; b=tMuqFlyur3uka85nJUWy8X7WsI Gq6hvzEDJh3UDdpFVRP7FvyWPQ/H19K1/GfHMpgcog1Bvy+b3hFqBYNL84EqlwzCVOP/I1aLIiMtb 86DkKmSt+ZrIWd2p+D0C9smE5YF6L4Yu3Z5EZV5mJGYdNIPLwk4pS4eK+QWZYK5+YduFqbliw3Y7f 7H4jVH+xPOUO49EQCgMM4QcjblhT/pnKCJWxFWcU+M36zsUDl31EA/zv2QT0AipgbXxJc7bEkRA5V TAEvpNpzzONN7Y7WDF9ERaOqsB8DGToY2VIeTqqI4dSDMsm3QSXVVMO3QZp/bBRR4jaWcxslDWZUQ hDjUiOVQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hBtTx-0005aS-9C; Thu, 04 Apr 2019 03:56:05 +0000 Received: from regular1.263xmail.com ([211.150.70.202]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hBtTv-0005a8-6A; Thu, 04 Apr 2019 03:56:04 +0000 Received: from sugar.zhang?rock-chips.com (unknown [192.168.167.29]) by regular1.263xmail.com (Postfix) with ESMTP id ECB1E2AE; Thu, 4 Apr 2019 11:48:43 +0800 (CST) X-263anti-spam: KSV:0;BIG:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ADDR-CHECKED4: 1 X-ABS-CHECKED: 1 X-SKE-CHECKED: 1 X-ANTISPAM-LEVEL: 2 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (postfix) whith ESMTP id P10405T140418540381952S1554349718945207_; Thu, 04 Apr 2019 11:48:42 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: <897e75b0a0753d512c793d62121d060f> X-RL-SENDER: sugar.zhang@rock-chips.com X-SENDER: zxg@rock-chips.com X-LOGIN-NAME: sugar.zhang@rock-chips.com X-FST-TO: heiko@sntech.de X-SENDER-IP: 58.22.7.114 X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 From: Sugar Zhang To: heiko@sntech.de, broonie@kernel.org Subject: [PATCH v1 05/12] ASoC: rockchip: pdm: change dma burst to 8 Date: Thu, 4 Apr 2019 11:48:11 +0800 Message-Id: <1554349691-23450-1-git-send-email-sugar.zhang@rock-chips.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1554298856-59028-1-git-send-email-sugar.zhang@rock-chips.com> References: <1554298856-59028-1-git-send-email-sugar.zhang@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190403_205603_421749_22DF19AC X-CRM114-Status: UNSURE ( 9.74 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Takashi Iwai , Liam Girdwood , Sugar Zhang , linux-rockchip@lists.infradead.org, Jaroslav Kysela , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This patch decreases the transfer bursts to avoid the fifo overrun. Signed-off-by: Sugar Zhang --- sound/soc/rockchip/rockchip_pdm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/rockchip/rockchip_pdm.c b/sound/soc/rockchip/rockchip_pdm.c index abbb6d7..c50494b 100644 --- a/sound/soc/rockchip/rockchip_pdm.c +++ b/sound/soc/rockchip/rockchip_pdm.c @@ -24,7 +24,7 @@ #include "rockchip_pdm.h" -#define PDM_DMA_BURST_SIZE (16) /* size * width: 16*4 = 64 bytes */ +#define PDM_DMA_BURST_SIZE (8) /* size * width: 8*4 = 32 bytes */ struct rk_pdm_dev { struct device *dev;