From patchwork Mon Oct 9 11:35:24 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chaotian Jing X-Patchwork-Id: 9992795 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 47F32602D7 for ; Mon, 9 Oct 2017 11:50:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 35D1C287D0 for ; Mon, 9 Oct 2017 11:50:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2A640287B1; Mon, 9 Oct 2017 11:50:58 +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 7A557287B4 for ; Mon, 9 Oct 2017 11:50:57 +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=fldPfO9L4cuzwb ncbyMPcirTEj4oA3ZTVSNNDUisPa7Y4r3/8lX3xqiKmCxw67xNYgSJuUYIS9SbufMLGFW9oLqSPLh g9MdbgH2zMUpayH8kC7hKSgN5t1rUVRJdHWN6yBEWW2etXACFxLzh+P4Z7gPKRpT5tcaLrVgd/PwX lY7dB9JyZXf+yR8r3THvuhFa2afZrpXOqbNX5rAMVPa2ua2G8jaaCc8ZhwbFv7AxtG4MXdH6rj2Pz +ktZ0DU/EkOj5ZwasL8DVkQAU5DyKtgznaQp5FqnyPtlmDhKiHYtcQvfThqx/Q8jty/3jfhaOSw2M xdmm4OoBXpH8C3TytrjQ==; 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 1e1WZu-0005WL-RB; Mon, 09 Oct 2017 11:50:34 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1e1WMQ-0003cl-03; Mon, 09 Oct 2017 11:36:47 +0000 X-UUID: a204cc3f43a14f1f835de610df1e6742-20171009 Received: from mtkcas08.mediatek.inc [(172.21.101.126)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 944303484; Mon, 09 Oct 2017 19:36:30 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs03n2.mediatek.inc (172.21.101.182) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Mon, 9 Oct 2017 19:36:36 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1210.3 via Frontend Transport; Mon, 9 Oct 2017 19:36:14 +0800 From: Chaotian Jing To: Ulf Hansson Subject: [PATCH v2 11/13] mmc: mediatek: add latch-ck support Date: Mon, 9 Oct 2017 19:35:24 +0800 Message-ID: <1507548926-9555-12-git-send-email-chaotian.jing@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1507548926-9555-1-git-send-email-chaotian.jing@mediatek.com> References: <1507548926-9555-1-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-20171009_043638_524473_39C1A86D X-CRM114-Status: GOOD ( 13.07 ) 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);