From patchwork Tue Nov 15 10:12:25 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jaehoon Chung X-Patchwork-Id: 9429277 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 90D3460755 for ; Tue, 15 Nov 2016 10:12:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7B382286AB for ; Tue, 15 Nov 2016 10:12:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6F9E528700; Tue, 15 Nov 2016 10:12:54 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EA086286B7 for ; Tue, 15 Nov 2016 10:12:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S941611AbcKOKMq (ORCPT ); Tue, 15 Nov 2016 05:12:46 -0500 Received: from mailout1.samsung.com ([203.254.224.24]:60899 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S941609AbcKOKMo (ORCPT ); Tue, 15 Nov 2016 05:12:44 -0500 Received: from epcpsbgm1new.samsung.com (epcpsbgm1 [203.254.230.26]) by mailout1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTP id <0OGO00AFZHOSER70@mailout1.samsung.com>; Tue, 15 Nov 2016 19:12:34 +0900 (KST) X-AuditID: cbfee61a-f79916d0000062de-b3-582adf92fda3 Received: from epmmp1.local.host ( [203.254.227.16]) by epcpsbgm1new.samsung.com (EPCPMTA) with SMTP id 94.CF.25310.29FDA285; Tue, 15 Nov 2016 19:12:34 +0900 (KST) Received: from localhost.localdomain ([10.113.62.216]) by mmp1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTPA id <0OGO004CZHOYWN60@mmp1.samsung.com>; Tue, 15 Nov 2016 19:12:34 +0900 (KST) From: Jaehoon Chung To: linux-mmc@vger.kernel.org Cc: devicetree@vger.kernel.org, ulf.hansson@linaro.org, heiko@sntech.de, shawn.lin@rock-chips.com, robh+dt@kernel.org, Jaehoon Chung Subject: [PATCHv2 03/10] mmc: dw_mmc: change the DW_MCI_FREQ_MIN from 400K to 100K Date: Tue, 15 Nov 2016 19:12:25 +0900 Message-id: <20161115101232.3854-4-jh80.chung@samsung.com> X-Mailer: git-send-email 2.10.1 In-reply-to: <20161115101232.3854-1-jh80.chung@samsung.com> References: <20161115101232.3854-1-jh80.chung@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrPLMWRmVeSWpSXmKPExsVy+t9jAd1J97UiDNbuMbKYf+Qcq8X/R69Z LW78amO1OPK/n9Gide8Rdos7T9azWhxfG+7A7rFpVSebx51re9g8/s7az+LRt2UVo8f2a/OY PT5vkgtgi3KzyUhNTEktUkjNS85PycxLt1UKDXHTtVBSyEvMTbVVitD1DQlSUihLzCkF8owM 0ICDc4B7sJK+XYJbxpazz9kL1rNX/F7WxNrA2MfWxcjJISFgIvH//y5mCFtM4sK99WBxIYGl jBK/53B1MXIB2T8YJeZ8fACWYBPQkdj+7TgTiC0iICvx888FsDizwEJGiZcvEkFsYYEQibaX cxlBbBYBVYm5iy6wdjFycPAKWEl8WFUHsUte4sLVUywgNqeAtcTxZwcZIfZaSfx61sM4gZF3 ASPDKkaJ1ILkguKk9FzDvNRyveLE3OLSvHS95PzcTYzgwH4mtYPx4C73Q4wCHIxKPLyB3loR QqyJZcWVuYcYJTiYlUR4za8BhXhTEiurUovy44tKc1KLDzGaAt01kVlKNDkfGHV5JfGGJuYm 5sYGFuaWliZGSuK8jbOfhQsJpCeWpGanphakFsH0MXFwSjUwMn1v3Dg1+JieuNhKv9rvi5+W bFrnvu8n7+8puy+si1y+xuew1tsCJtbVOxlCs1R7lfWmeDJNfrPytOVBx4fzji40Dvn39eYz v8QHO1XPXjkcFXLRIvuq786VbZdm/lC9KrT/ucfmiVyfPO48eTi1bGLb2dtMb03j1oj4xUtq qG95kfdq/dE66/dKLMUZiYZazEXFiQBaI7YoggIAAA== X-MTR: 20000000000000000@CPGS Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP If there is no property "clock-freq-min-max", mmc->f_min should be set to 400K by default. But Some SoC can be used 100K. When 100K is used, MMC core will try to check from 400K to 100K. Reported-by: Shawn Lin Signed-off-by: Jaehoon Chung Tested-by: Heiko Stuebner Reviewed-by: Shawn Lin --- drivers/mmc/host/dw_mmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 6c0c4c5..be36f48 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -54,7 +54,7 @@ #define DW_MCI_DMA_THRESHOLD 16 #define DW_MCI_FREQ_MAX 200000000 /* unit: HZ */ -#define DW_MCI_FREQ_MIN 400000 /* unit: HZ */ +#define DW_MCI_FREQ_MIN 100000 /* unit: HZ */ #define IDMAC_INT_CLR (SDMMC_IDMAC_INT_AI | SDMMC_IDMAC_INT_NI | \ SDMMC_IDMAC_INT_CES | SDMMC_IDMAC_INT_DU | \