From patchwork Mon Apr 21 03:15:36 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Ricky Wu X-Patchwork-Id: 883411 Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0C8D436D; Mon, 21 Apr 2025 03:15:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=211.75.126.72 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745205347; cv=none; b=cvH8UZqVcz5JYo4R2ZDtBG5iN7ELsC9sZRlITY9nbuLKqlvpZGaxrbmQc375qkdUjm7WGZOFtGoViwOAeBVfL5GAWtpwkx9rlzv6bN7CSg1QA9B98MhJtVYT8xyU3K8qPy4n0iqOvH6VMmgh+bcv5q+wtmzp/ItwOdqdTqoulR0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745205347; c=relaxed/simple; bh=Xss18Csvtjq6OP5uIXnOSn0c/AN+3lw7xL7NwaMHPQw=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=Kt9R5AaM2v0PnqnwiSHl4QA/Csi7ttYN45qZAd0IywmnxS0kVgfwmy0/TCHqsLFdV7q13EwTB3B7UL+62ioDueBZ+AFszTJKWgcmryw4tKZNemShbuJQXDyhYo1szgkitTpM6h+2j2zarSPl4t9ESS79M0a/xt4Kt1eFPZuGRug= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=realtek.com; spf=pass smtp.mailfrom=realtek.com; dkim=temperror (0-bit key) header.d=realtek.com header.i=@realtek.com header.b=Uu8aWpE5; arc=none smtp.client-ip=211.75.126.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=realtek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=realtek.com Authentication-Results: smtp.subspace.kernel.org; dkim=temperror (0-bit key) header.d=realtek.com header.i=@realtek.com header.b="Uu8aWpE5" X-SpamFilter-By: ArmorX SpamTrap 5.78 with qID 53L3Fe0U21406473, This message is accepted by code: ctloc85258 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=realtek.com; s=dkim; t=1745205340; bh=Xss18Csvtjq6OP5uIXnOSn0c/AN+3lw7xL7NwaMHPQw=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type: Content-Transfer-Encoding; b=Uu8aWpE5mc6xtRcI2rMcK6lefjOMWLd/tQHYjGu37/4D903pGN2p+7pmxHATAM1sj RTBW0kkHsggMG7yt1izYmIm/oRqwkY6FCm2AMgaWsKeHthwCXzvdfaHAbO616kwzYk 8TCmgRsah4Dv9vNn2AHgo0iqwHfkLQDaZ1AvO2E/7rBbhCm9zVX9zP1SSQH5mrUuiK CY2zx+5kXdfxm55cko5Zuo56GK+miYQuWbYM9d8LLmKGa3U0FqArs0i2ej2hqYQunE zCcvGlXJ0dUAUsi6zPNs9aNHGwgJh6oUCNIoHMfPw3rz8/446nLmKPXz4+ar8lWZT/ bMpchr0i9CFGA== Received: from mail.realtek.com (rtexh36505.realtek.com.tw[172.21.6.25]) by rtits2.realtek.com.tw (8.15.2/3.06/5.92) with ESMTPS id 53L3Fe0U21406473 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 21 Apr 2025 11:15:40 +0800 Received: from RTEXDAG01.realtek.com.tw (172.21.6.100) by RTEXH36505.realtek.com.tw (172.21.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Mon, 21 Apr 2025 11:15:41 +0800 Received: from RTEXH36506.realtek.com.tw (172.21.6.27) by RTEXDAG01.realtek.com.tw (172.21.6.100) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Mon, 21 Apr 2025 11:15:40 +0800 Received: from localhost (172.22.144.1) by RTEXH36506.realtek.com.tw (172.21.6.27) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Mon, 21 Apr 2025 11:15:40 +0800 From: Ricky Wu To: , , , , Subject: [PATCH] mmc: rtsx: usb add 100ms delay before power on Date: Mon, 21 Apr 2025 11:15:36 +0800 Message-ID: <20250421031536.1173373-1-ricky_wu@realtek.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 this delay make sure the last time power off did the discharge clean. During the card recognition process, card power will be toggled in 1ms， and 1ms is not enough to discharge cleanly Signed-off-by: Ricky Wu --- drivers/mmc/host/rtsx_usb_sdmmc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mmc/host/rtsx_usb_sdmmc.c b/drivers/mmc/host/rtsx_usb_sdmmc.c index 1edfe2acf809..e5820b2bb380 100644 --- a/drivers/mmc/host/rtsx_usb_sdmmc.c +++ b/drivers/mmc/host/rtsx_usb_sdmmc.c @@ -952,6 +952,8 @@ static int sd_power_on(struct rtsx_usb_sdmmc *host) struct rtsx_ucr *ucr = host->ucr; int err; + msleep(100); + dev_dbg(sdmmc_dev(host), "%s\n", __func__); rtsx_usb_init_cmd(ucr); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_SELECT, 0x07, SD_MOD_SEL);