From patchwork Mon Oct 16 01:46:35 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chaotian Jing X-Patchwork-Id: 10007519 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 3EADA603FA for ; Mon, 16 Oct 2017 01:51:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2FA0B2623C for ; Mon, 16 Oct 2017 01:51:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2409B26538; Mon, 16 Oct 2017 01:51:53 +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=unavailable 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 BFB3C2654B for ; Mon, 16 Oct 2017 01:51:52 +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=j6V7C0Et6mQAE9vsG5T7IFK03rlzyl9eJHcQudbymjs=; b=qjsN9j7w2ybevX AAu82zShhp+x+vsjXBhXJHoblktKTY1ddbY86U8gVrzVZDiHXhd8ln+Nkasld48QKDosF4NY6KDgA PIAA15OHBYzK3G7GdO/qMAXqw50ABBj/uIBLsYResAXoN2th44T1fQH33I2vHV9m8zEeNCRHu5y1O do61PR5pqSmUA0HC7nkiXg8Lp0p61Me7nSSbeTsmI4XkPEkhuI5sLdLGgMQczuD6RKDOgESWVFGvZ 8MVsUkL8bAg7EKwMg2HoQuZJtGhPV0jkqlexozo+tsNgFRIPCO5vIwZGOw7MngNN21XjhVDH/t1/n WNHjnu7iqIfg8oUTwpMw==; 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 1e3uYz-00019p-Ua; Mon, 16 Oct 2017 01:51:29 +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 1e3uVF-0004ba-QU; Mon, 16 Oct 2017 01:47:51 +0000 X-UUID: 72e05e3cec3840318f91044a7b47406a-20171016 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 739704815; Mon, 16 Oct 2017 09:47:23 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs03n2.mediatek.inc (172.21.101.182) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Mon, 16 Oct 2017 09:47:22 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1210.3 via Frontend Transport; Mon, 16 Oct 2017 09:47:21 +0800 From: Chaotian Jing To: Ulf Hansson Subject: [PATCH v6 08/12] mmc: mediatek: add stop_clk fix and enhance_rx support Date: Mon, 16 Oct 2017 09:46:35 +0800 Message-ID: <1508118399-21828-9-git-send-email-chaotian.jing@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1508118399-21828-1-git-send-email-chaotian.jing@mediatek.com> References: <1508118399-21828-1-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-20171015_184738_958383_DD6CD7C4 X-CRM114-Status: GOOD ( 14.50 ) 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 , 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 mt2712 supports stop_clk fix and enhance_rx, which can improve host stability. Signed-off-by: Chaotian Jing --- drivers/mmc/host/mtk-sd.c | 47 +++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 43 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index eceaee8..94d16a3 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -67,6 +67,7 @@ #define SDC_RESP2 0x48 #define SDC_RESP3 0x4c #define SDC_BLK_NUM 0x50 +#define SDC_ADV_CFG0 0x64 #define EMMC_IOCON 0x7c #define SDC_ACMD_RESP 0x80 #define MSDC_DMA_SA 0x90 @@ -80,6 +81,7 @@ #define PAD_DS_TUNE 0x188 #define PAD_CMD_TUNE 0x18c #define EMMC50_CFG0 0x208 +#define SDC_FIFO_CFG 0x228 /*--------------------------------------------------------------------------*/ /* Register Mask */ @@ -188,6 +190,9 @@ #define SDC_STS_CMDBUSY (0x1 << 1) /* RW */ #define SDC_STS_SWR_COMPL (0x1 << 31) /* RW */ +/* SDC_ADV_CFG0 mask */ +#define SDC_RX_ENHANCE_EN (0x1 << 20) /* RW */ + /* MSDC_DMA_CTRL mask */ #define MSDC_DMA_CTRL_START (0x1 << 0) /* W */ #define MSDC_DMA_CTRL_STOP (0x1 << 1) /* W */ @@ -217,6 +222,8 @@ #define MSDC_PATCH_BIT_SPCPUSH (0x1 << 29) /* RW */ #define MSDC_PATCH_BIT_DECRCTMO (0x1 << 30) /* RW */ +#define MSDC_PATCH_BIT1_STOP_DLY (0xf << 8) /* RW */ + #define MSDC_PATCH_BIT2_CFGRESP (0x1 << 15) /* RW */ #define MSDC_PATCH_BIT2_CFGCRCSTS (0x1 << 28) /* RW */ #define MSDC_PB2_RESPWAIT (0x3 << 2) /* RW */ @@ -242,6 +249,9 @@ #define EMMC50_CFG_CRCSTS_EDGE (0x1 << 3) /* RW */ #define EMMC50_CFG_CFCSTS_SEL (0x1 << 4) /* RW */ +#define SDC_FIFO_CFG_WRVALIDSEL (0x1 << 24) /* RW */ +#define SDC_FIFO_CFG_RDVALIDSEL (0x1 << 25) /* RW */ + #define REQ_CMD_EIO (0x1 << 0) #define REQ_CMD_TMO (0x1 << 1) #define REQ_DAT_ERR (0x1 << 2) @@ -308,6 +318,7 @@ struct msdc_save_para { u32 pad_ds_tune; u32 pad_cmd_tune; u32 emmc50_cfg0; + u32 sdc_fifo_cfg; }; struct mtk_mmc_compatible { @@ -317,6 +328,8 @@ struct mtk_mmc_compatible { bool async_fifo; bool data_tune; bool busy_check; + bool stop_clk_fix; + bool enhance_rx; }; struct msdc_tune_para { @@ -382,6 +395,8 @@ struct msdc_host { .async_fifo = false, .data_tune = false, .busy_check = false, + .stop_clk_fix = false, + .enhance_rx = false, }; static const struct mtk_mmc_compatible mt8173_compat = { @@ -391,6 +406,8 @@ struct msdc_host { .async_fifo = false, .data_tune = false, .busy_check = false, + .stop_clk_fix = false, + .enhance_rx = false, }; static const struct mtk_mmc_compatible mt2701_compat = { @@ -400,6 +417,8 @@ struct msdc_host { .async_fifo = true, .data_tune = true, .busy_check = false, + .stop_clk_fix = false, + .enhance_rx = false, }; static const struct mtk_mmc_compatible mt2712_compat = { @@ -409,6 +428,8 @@ struct msdc_host { .async_fifo = true, .data_tune = true, .busy_check = true, + .stop_clk_fix = true, + .enhance_rx = true, }; static const struct of_device_id msdc_of_ids[] = { @@ -1280,15 +1301,31 @@ static void msdc_init_hw(struct msdc_host *host) sdr_set_field(host->base + MSDC_PATCH_BIT, MSDC_CKGEN_MSDC_DLY_SEL, 1); writel(0xffff4089, host->base + MSDC_PATCH_BIT1); sdr_set_bits(host->base + EMMC50_CFG0, EMMC50_CFG_CFCSTS_SEL); + + if (host->dev_comp->stop_clk_fix) { + sdr_set_field(host->base + MSDC_PATCH_BIT1, + MSDC_PATCH_BIT1_STOP_DLY, 3); + sdr_clr_bits(host->base + SDC_FIFO_CFG, + SDC_FIFO_CFG_WRVALIDSEL); + sdr_clr_bits(host->base + SDC_FIFO_CFG, + SDC_FIFO_CFG_RDVALIDSEL); + } + if (host->dev_comp->busy_check) sdr_clr_bits(host->base + MSDC_PATCH_BIT1, (1 << 7)); + if (host->dev_comp->async_fifo) { sdr_set_field(host->base + MSDC_PATCH_BIT2, MSDC_PB2_RESPWAIT, 3); - sdr_set_field(host->base + MSDC_PATCH_BIT2, - MSDC_PB2_RESPSTSENSEL, 2); - sdr_set_field(host->base + MSDC_PATCH_BIT2, - MSDC_PB2_CRCSTSENSEL, 2); + if (host->dev_comp->enhance_rx) { + sdr_set_bits(host->base + SDC_ADV_CFG0, + SDC_RX_ENHANCE_EN); + } else { + sdr_set_field(host->base + MSDC_PATCH_BIT2, + MSDC_PB2_RESPSTSENSEL, 2); + sdr_set_field(host->base + MSDC_PATCH_BIT2, + MSDC_PB2_CRCSTSENSEL, 2); + } /* use async fifo, then no need tune internal delay */ sdr_clr_bits(host->base + MSDC_PATCH_BIT2, MSDC_PATCH_BIT2_CFGRESP); @@ -1933,6 +1970,7 @@ static void msdc_save_reg(struct msdc_host *host) host->save_para.pad_ds_tune = readl(host->base + PAD_DS_TUNE); host->save_para.pad_cmd_tune = readl(host->base + PAD_CMD_TUNE); host->save_para.emmc50_cfg0 = readl(host->base + EMMC50_CFG0); + host->save_para.sdc_fifo_cfg = readl(host->base + SDC_FIFO_CFG); } static void msdc_restore_reg(struct msdc_host *host) @@ -1949,6 +1987,7 @@ static void msdc_restore_reg(struct msdc_host *host) writel(host->save_para.pad_ds_tune, host->base + PAD_DS_TUNE); writel(host->save_para.pad_cmd_tune, host->base + PAD_CMD_TUNE); writel(host->save_para.emmc50_cfg0, host->base + EMMC50_CFG0); + writel(host->save_para.sdc_fifo_cfg, host->base + SDC_FIFO_CFG); } static int msdc_runtime_suspend(struct device *dev)