From patchwork Tue Oct 11 10:49:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wenchao Chen X-Patchwork-Id: 13003831 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0D6B5C433F5 for ; Tue, 11 Oct 2022 10:49:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229501AbiJKKtt (ORCPT ); Tue, 11 Oct 2022 06:49:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49588 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229604AbiJKKtr (ORCPT ); Tue, 11 Oct 2022 06:49:47 -0400 Received: from mail-pf1-x42f.google.com (mail-pf1-x42f.google.com [IPv6:2607:f8b0:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 57251DEE0; Tue, 11 Oct 2022 03:49:45 -0700 (PDT) Received: by mail-pf1-x42f.google.com with SMTP id h13so11722612pfr.7; Tue, 11 Oct 2022 03:49:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=gE/o/W+5xXJu20wExf/jieHRuV5EEyNjRmK4KW6+ktw=; b=VvLEHe7oPVdDLOWYrc/tzOD7YqqCC++zntDzVeVPqO09iNuGLWfSaQVwyg2KcdNwI5 860qOWCTouO9+EeFsWHWMfxH8sPqsR3z4YrI21PKQUUXTLSJxORlB8tBe1eShtOqHF3i yb+R9wS8SXdZRu9kqP2oehOUp6GRhSCzg7zosd16bq8EI+Afh3CEZa1pXORP9VA2A9EP JjoUWL2pgtN6rSVIAmW5nchyqfxmQDG9cXHmQ7H8SbGXMtJESd8vH6ordomBSpk0YRKl CLSWfpYCnDx6Uq9oXsTb9pw9kImegmgeAI3ap2YlvO/iuzo6hXuVz5+7lQ9VJRCb0Qq9 N6Ag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gE/o/W+5xXJu20wExf/jieHRuV5EEyNjRmK4KW6+ktw=; b=SmCtBGhjVJxF18thfDS1aMFOfyuue+COp4yNVzoP+mS6Khn8ZPfkOsHqYG2yPEH/Na DLWvl2mU6f5NDCLhsZ63bdDx+QXT/YNZJrYzVklgqf8eC6r48btoE+UbKazH441N5e5K ucm9NroLwlXzPQaccXfFj67F9/4VplK2/RX0HIcl1t9eGkkBocESX4f5FDHiqVZjAyou UiY1XJcz4/577JWolQclIRyG8lqBJqsnH2Db4XgH96m0Re+D6NZUGiRk/Hi01Dxuy0uZ pyQYcvnn/jJAwJu4BdVSSBWJMppb+OgfIoLM1BZUmTAjKth7VKa7Ii0D9CFtgkaDkY8z jFAA== X-Gm-Message-State: ACrzQf2wdXIovXzzjoOg3SEDQxw0ILQ/ELBVZy3kWhH1LJZ3wO/pz/FK Tmfu+0FMLQKVPL+9EZqdCoc= X-Google-Smtp-Source: AMsMyM5YhHb/jfBBAbq6B1g1I7W4zi55K+i57gnbzE0u30KHGJV/fXvkCi50NG6+m6knu8dhfKvoBg== X-Received: by 2002:a62:6243:0:b0:561:748:94d1 with SMTP id w64-20020a626243000000b00561074894d1mr24622550pfb.33.1665485384827; Tue, 11 Oct 2022 03:49:44 -0700 (PDT) Received: from xm06403pcu.spreadtrum.com ([117.18.48.102]) by smtp.gmail.com with ESMTPSA id 124-20020a621582000000b005621152c051sm8672786pfv.66.2022.10.11.03.49.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Oct 2022 03:49:44 -0700 (PDT) From: Wenchao Chen To: adrian.hunter@intel.com, ulf.hansson@linaro.org, orsonzhai@gmail.com, baolin.wang@linux.alibaba.com, zhang.lyra@gmail.com Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, megoo.tang@gmail.com, lzx.stg@gmail.com Subject: [PATCH V2] mmc: sdhci-sprd: Fix minimum clock limit Date: Tue, 11 Oct 2022 18:49:35 +0800 Message-Id: <20221011104935.10980-1-wenchao.chen666@gmail.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Wenchao Chen v1 -> v2: - Address Adrian's suggestions Our controller supports 100K. During the test, it was found that mmc_rescan failed to scan the card at 400K, and did not try 300K, 200K, and 100K. After modifying the minimum clock limit to 100K, the card scan was successful Signed-off-by: Wenchao Chen Acked-by: Adrian Hunter Fixes: fb8bd90f83c4 ("mmc: sdhci-sprd: Add Spreadtrum's initial host controller") --- drivers/mmc/host/sdhci-sprd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c index 46c55ab4884c..b92a408f138d 100644 --- a/drivers/mmc/host/sdhci-sprd.c +++ b/drivers/mmc/host/sdhci-sprd.c @@ -309,7 +309,7 @@ static unsigned int sdhci_sprd_get_max_clock(struct sdhci_host *host) static unsigned int sdhci_sprd_get_min_clock(struct sdhci_host *host) { - return 400000; + return 100000; } static void sdhci_sprd_set_uhs_signaling(struct sdhci_host *host,