From patchwork Tue Sep 12 09:07:50 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chaotian Jing X-Patchwork-Id: 9948769 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 9DE3660325 for ; Tue, 12 Sep 2017 09:11:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 843EB28EFA for ; Tue, 12 Sep 2017 09:11:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 82C0828EF7; Tue, 12 Sep 2017 09:11:46 +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=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, RCVD_IN_DNSWL_MED, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9190128EFA for ; Tue, 12 Sep 2017 09:11:26 +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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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=C9Vj3oXCwqPjwl0bveRHScs+yuaOjkchSldpF5ice/o=; b=ST0fWYPdTDn/5l FNzhMlVcdEz6OYo9EUZOkORoXDBa6NvXBOHPZDDDPdycLtn2HLp7UQLbgPKxoc6LDotT+KJRB9sFy Nih6u4BGzHfOVTnh4Jj24mn7ti8sMXLQr/lhypEbBRiHuNHXcyv0YfAlP8JiUZT0z8htjEanif0WZ kJV93fGCAhpMhF/1fxQd7NRJnu15Sr1Nc4+4/HQVrAxYgE1W9zvBUa5R4QQmoU9TExSVV2tsuqpXx 6T3PK53F6kkqdUTwGJh/r60T2t2zOeS0cwe2sWutEOLl4T5XETFC/yjq0aPOZT5RoqlbchaqUHK+E 6S+TRTa7VXklKFUDeV7Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1drhE0-0007oa-3d; Tue, 12 Sep 2017 09:11:20 +0000 Received: from [210.61.82.183] (helo=mailgw01.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1drhBJ-000463-KS; Tue, 12 Sep 2017 09:08:40 +0000 X-UUID: 88c79a2fc0954d9585477473a6f905d5-20170912 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1595314276; Tue, 12 Sep 2017 17:08:25 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs03n1.mediatek.inc (172.21.101.181) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Tue, 12 Sep 2017 17:08:24 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1210.3 via Frontend Transport; Tue, 12 Sep 2017 17:08:22 +0800 From: Chaotian Jing To: Ulf Hansson Subject: [PATCH 10/12] mmc: mediatek: add latch-ck support Date: Tue, 12 Sep 2017 17:07:50 +0800 Message-ID: <1505207272-16983-11-git-send-email-chaotian.jing@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1505207272-16983-1-git-send-email-chaotian.jing@mediatek.com> References: <1505207272-16983-1-git-send-email-chaotian.jing@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170912_020834_232867_E74A32A2 X-CRM114-Status: GOOD ( 11.37 ) 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: Mark Rutland , devicetree@vger.kernel.org, srv_heupstream@mediatek.com, Catalin Marinas , Linus Walleij , Will Deacon , linux-kernel@vger.kernel.org, yong mao , Phong LE , Javier Martinez Canillas , Rob Herring , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Matthias Brugger , linux-mmc@vger.kernel.org, Chaotian Jing , Heiner Kallweit 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 some platform(eg.mt2701) does not support "stop clk fix", in this case, need set correct latch-ck to avoid crc error caused by stop clock block-internally. Signed-off-by: Chaotian Jing --- drivers/mmc/host/mtk-sd.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index 522fd0a..3328d59 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -378,6 +378,7 @@ struct msdc_host { u32 sclk; /* SD/MS bus clock frequency */ unsigned char timing; bool vqmmc_enabled; + u32 latch_ck; u32 hs400_ds_delay; u32 hs200_cmd_int_delay; /* cmd internal delay for HS200/SDR104 */ u32 hs400_cmd_int_delay; /* cmd internal delay for HS400 */ @@ -1668,6 +1669,8 @@ static int msdc_tune_data(struct mmc_host *mmc, u32 opcode) if (host->dev_comp->pad_tune0) tune_reg = MSDC_PAD_TUNE0; + sdr_set_field(host->base + MSDC_PATCH_BIT, MSDC_INT_DAT_LATCH_CK_SEL, + host->latch_ck); sdr_clr_bits(host->base + MSDC_IOCON, MSDC_IOCON_DSPL); sdr_clr_bits(host->base + MSDC_IOCON, MSDC_IOCON_W_DSPL); for (i = 0 ; i < PAD_DELAY_MAX; i++) { @@ -1783,6 +1786,9 @@ static void msdc_hw_reset(struct mmc_host *mmc) static void msdc_of_property_parse(struct platform_device *pdev, struct msdc_host *host) { + of_property_read_u32(pdev->dev.of_node, "mediatek,latch-ck", + &host->latch_ck); + of_property_read_u32(pdev->dev.of_node, "hs400-ds-delay", &host->hs400_ds_delay);