From patchwork Tue Apr 16 14:59:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Felix Qin X-Patchwork-Id: 790058 Received: from m16.mail.126.com (m16.mail.126.com [220.197.31.8]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 9517712F5BE for ; Tue, 16 Apr 2024 15:14:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=220.197.31.8 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713280489; cv=none; b=ZpkZXDYI70qMy4RvnhwoY/EhZbPVX5DLcxhkCyWzQFzh2T54i2ijYGVc1q6BhDDyZesFpMH9lA8u65Bqx/wzGYL8R2KvlmZOxGrhuf1eRm6zbtSfDn6MTRTYNWU922fI2TqrYzPq0t7Aj/Ea+hzN1Dz2pE38lc6zsD/ZJoRnmcs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713280489; c=relaxed/simple; bh=x2E8ogT+mYhPFtUxiSoqoy9197FO+1ZvBBItFkjXVNc=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=JxqVX1O0GQZ1Di5+3uLlJx1KWWZVuRGO6Ul6K8K0LT8azcCW1QTfqf/4pclocJbOALIJBD0zffWUO22g44wn62MKH18SoNKEc2XK+6ge9kU0QPmoVojyR26NdafrZz2iKST9Zj0ZyyKwg+69pewV6OlXqW7vGbjz7Cay6+U/osA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=126.com; spf=pass smtp.mailfrom=126.com; dkim=pass (1024-bit key) header.d=126.com header.i=@126.com header.b=hY2OthoQ; arc=none smtp.client-ip=220.197.31.8 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=126.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=126.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=126.com header.i=@126.com header.b="hY2OthoQ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=126.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=iJ/aZ Ls0HvdPE7ZuxzfdP95VtdfXBWrgMrVHUkU4Wgc=; b=hY2OthoQJLZgQ883aZGNn tgoqOg2AT+z55CQtiAQRJbCMAE5TC9/qpj2T7PNsxcF/CdnrF0zTJrph5V/mWBUn jurWSH2hW3W1G1T8PgTrZV/xFTBui0zsRS9v+pA9inSk63Ot4AHzTdHnYakl9mFR dS6SvucaP86vOJ8iBoD9WY= Received: from localhost.localdomain (unknown [58.22.7.114]) by gzga-smtp-mta-g0-0 (Coremail) with SMTP id _____wDnr7NHkh5mDag6BA--.51692S2; Tue, 16 Apr 2024 22:59:21 +0800 (CST) From: Felix Qin To: ulf.hansson@linaro.org, linux-mmc@vger.kernel.org Cc: Felix Qin Subject: [PATCH] mmc: core: increase the number of retries of the ACMD41 Date: Tue, 16 Apr 2024 22:59:12 +0800 Message-Id: <20240416145912.114409-1-xiaokeqinhealth@126.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: _____wDnr7NHkh5mDag6BA--.51692S2 X-Coremail-Antispam: 1Uf129KBjvJXoW7WrWrGF4DurWrtr18WF17Jrb_yoW8XFWxpr 45WryjkFnrJay3AFyxGa1q9343W3WIkFWUKrykZw10vF15u3s8WrZrAFW5tFyUZayUuFZa qF9Iqw13GFya9r7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0pNLvKcUUUUU= X-CM-SenderInfo: 50ld0yhhtl0xhhdo3xa6rslhhfrp/1tbimgnC1WVLa6ZAMwAAsU Extensive testing has shown that a few specific SD cards require an increase in the number of command retries to successfully initialize. Signed-off-by: Felix Qin --- drivers/mmc/core/sd_ops.c | 4 ++-- drivers/mmc/core/sd_ops.h | 8 ++++++++ 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c index a59cd592f06e..b3b6e8725b80 100644 --- a/drivers/mmc/core/sd_ops.c +++ b/drivers/mmc/core/sd_ops.c @@ -127,7 +127,7 @@ int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) cmd.arg = ocr; cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR; - for (i = 100; i; i--) { + for (i = SD_APP_OP_COND_RETRIES; i; i--) { err = mmc_wait_for_app_cmd(host, NULL, &cmd); if (err) break; @@ -147,7 +147,7 @@ int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) err = -ETIMEDOUT; - mmc_delay(10); + mmc_delay(SD_APP_OP_COND_INTERVAL); } if (!i) diff --git a/drivers/mmc/core/sd_ops.h b/drivers/mmc/core/sd_ops.h index 7667fc223b74..80c5c836ccd1 100644 --- a/drivers/mmc/core/sd_ops.h +++ b/drivers/mmc/core/sd_ops.h @@ -10,6 +10,14 @@ #include +/* + * Extensive testing has shown that a few specific SD cards require + * an increase in the number of command retries to successfully + * initialize. + */ +#define SD_APP_OP_COND_RETRIES 200 +#define SD_APP_OP_COND_INTERVAL 10 /* millisecond */ + struct mmc_card; struct mmc_host;