From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7D7E939B970 for ; Sat, 28 Feb 2026 18:16:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302619; cv=none; b=g7wkD/HaNjXqjkOM9AHMrypPO0UEJG/4oX9aWIOXzUYNNeRB1VLfQQhMNihzg/Elo+4CMOLb1FQQNK/dg8JezBTAYbHMbL8MFo3cOgRjsS6dJa6ab/ExcY3L9mePNSGo1OdzvZX77RHnrI6FaqXxlE9CVlCpeRPny7rtbZdc6Sw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302619; c=relaxed/simple; bh=OUH2LPSgOrGISwPiSo+DwkNnL0tpksJBbIwCwGl0dQc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=q00lk7PwGVsokiA+2WJipbHDOCBCobCFlKnIC2Qqu4vYvkXSvHCutrwxRDTuFLl8zW18HFLjg/QUt1WjsaRdPlt5dOuQY+McbFPrQ9D8XnkDuG7bN/kS3d+jMpBi654nkfkX4mPdz17pHI46CLdFfQztDeXAliHmn+QUyknCasI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QWTXaUt2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QWTXaUt2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E2567C19423; Sat, 28 Feb 2026 18:16:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772302619; bh=OUH2LPSgOrGISwPiSo+DwkNnL0tpksJBbIwCwGl0dQc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QWTXaUt2IlDB9+VkK/7aMmjE4bDENxmhNIHExbDnWH/vlFqKqx+V7FiaCOY8732L9 QrasXIOEGw//vdidsdJ/phIWr1vkdOli1Cr8YvSWMqdpPXwKhfiSGgC4exhoPahlxB bXd9b39Hg5Ij1qylH0zdSqKmdkV6ZGa0WmY2czaj7NKO7jZVD6FgHhJzsgrADIJC2y JRQGyt0DiPWM9DfjJWzWfFC4a+rB6V85+cyc20K4pT+cEx6hXEqcNzPsSUf2nn9T8V YAtzjHeKqq8nO5uRnMH3AnPaGOw08dbJe79qBlqisjyo10egXJ8ttH2U+v5Rh82p/b KB75p2SRXh+Fw== From: Sasha Levin To: patches@lists.linux.dev Cc: Matthew Schwartz , Greg Kroah-Hartman , Sasha Levin Subject: [PATCH 5.15 137/164] mmc: rtsx_pci_sdmmc: increase power-on settling delay to 5ms Date: Sat, 28 Feb 2026 13:14:36 -0500 Message-ID: <20260228181505.1600663-137-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228181505.1600663-1-sashal@kernel.org> References: <20260228181505.1600663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Matthew Schwartz [ Upstream commit aced969e9bf3701dc75cfca57c78c031b7875b9d ] The existing 1ms delay in sd_power_on is insufficient and causes resume errors around 4% of the time. Increasing the delay to 5ms resolves this issue after testing 300 s2idle cycles. Fixes: 1f311c94aabd ("mmc: rtsx: add 74 Clocks in power on flow") Signed-off-by: Matthew Schwartz Link: https://patch.msgid.link/20260105060236.400366-3-matthew.schwartz@linux.dev Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/mmc/host/rtsx_pci_sdmmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c index d063d50d69feb..02da9016245bd 100644 --- a/drivers/mmc/host/rtsx_pci_sdmmc.c +++ b/drivers/mmc/host/rtsx_pci_sdmmc.c @@ -938,7 +938,7 @@ static int sd_power_on(struct realtek_pci_sdmmc *host, unsigned char power_mode) if (err < 0) return err; - mdelay(1); + mdelay(5); err = rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, SD_OUTPUT_EN); if (err < 0) -- 2.51.0