From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 756AD606A31A for ; Fri, 30 Oct 2026 21:54:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=BEGZsRpQ; dkim=pass (2048-bit key, unprotected) header.d=nabladev.com header.i=@nabladev.com header.a=rsa-sha256 header.s=dkim header.b=CWx+wXNf DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Unsubscribe-Post:List-Owner; bh=qJLnpzBdDvSSAoILaAVEaPeTNJiYyTIY+1V0RNSuyBI=; b=BEGZsRpQRyTPVlasUAgGP+GdoA zCEGW8TG9mUhbZtz44jWnf2kHo0xaf6fEcU6BS59ECUg3qNAVxgyH65FC14IgEwa9onpDsWIXchhM PnCB5uA7aFa+NRNhZomEg+YVwlOsQyBzBubYlK0n1LKI2BGJgv4O/vclOrp0xxeVc3fqR8UNK3pKq vSth1VZ6vD9ag+h9FiMdyIwhZ+0qG4PUqB6EW9Mbsq14dfhcEozxDKFYW8H5Ihg7iupKSe71gEzFb rVwZjXaNltD9NjC02LxAXg8JAnqSIdPFveTi40Qc5HOYbvOB4Zd+mHhE+rINpkuNuSTS5tY5yHGz2 9WF/D90g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xMuYb-0000000CeAZ-2tbp; Fri, 30 Oct 2026 21:54:41 +0000 Received: from mx.nabladev.com ([2a00:f820:417:0:178:251:229:89]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xMuYY-0000000CeAB-2z3o for linux-arm-kernel@lists.infradead.org; Fri, 30 Oct 2026 21:54:40 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 5D4EA10C09B; Fri, 30 Oct 2026 22:54:29 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nabladev.com; s=dkim; t=1793397271; h=from:subject:date:message-id:to:cc:mime-version: content-transfer-encoding; bh=qJLnpzBdDvSSAoILaAVEaPeTNJiYyTIY+1V0RNSuyBI=; b=CWx+wXNfQf9XQkAogInTZgRusncfRZFc34fhAEwItQl9pzzNdNeOPxiieTbvhqmYI4XhIf rt53hkH4UFsl4hnkeYHOF1T5Lq4W21AeC218bpr8ua887h3G2mlWypdVyY6tthwEp6+Eem ogS9w87RPIh58KmF7Htfd82VwGez2C+kF0qmtqKkv2lkMQQaGxqztkjxFYDRxsB/+gm/VW gcNDd0/jjCR/SUhK/ir+JajpAFI+jjQKLMNOCjrpHc/vtiJeavY+7/K4qth3g43FPaVkYj kt8hMeKO1wfFgCF5j/IxYTy9lHzmWJ37P0/Mlip8CSL2XuSjXezFcm3oZZfR5A== From: Marek Vasut To: linux-mmc@vger.kernel.org Cc: Christophe Kerello , Marek Vasut , Alexandre Torgue , Maxime Coquelin , Ulf Hansson , kernel@dh-electronics.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com Subject: [PATCH] mmc: mmci: stm32: handle mmc power up Date: Fri, 30 Oct 2026 22:53:38 +0100 Message-ID: <20261030215427.488298-1-marex@nabladev.com> X-Mailer: git-send-email 2.53.0 X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261030_145438_986378_EF66C4C0 X-CRM114-Status: GOOD ( 11.12 ) X-Spam-Score: -2.1 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-18.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 From: Christophe Kerello Manage MMC POWER UP state like MMC POWER OFF state. In case of low power use cases, it will avoid random initialization timeout. This fixes a failure to switch DDR52 eMMC to 8 bit mode due to -EILSEQ returned from mmc_get_ext_csd() in mmc_compare_ext_csds() called from mmc_select_bus_width() after Standby1 suspend/resume cycle. Fixes: 46b723dd867d ("mmc: mmci: add stm32 sdmmc variant") Signed-off-by: Christophe Kerello Signed-off-by: Marek Vasut --- Cc: Alexandre Torgue Cc: Christophe Kerello Cc: Maxime Coquelin Cc: Ulf Hansson Cc: kernel@dh-electronics.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-mmc@vger.kernel.org Cc: linux-stm32@st-md-mailman.stormreply.com --- Marek: Update commit message --- drivers/mmc/host/mmci_stm32_sdmmc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/mmci_stm32_sdmmc.c b/drivers/mmc/host/mmci_stm32_sdmmc.c index 9dc51859c2e51..659a5040729e9 100644 --- a/drivers/mmc/host/mmci_stm32_sdmmc.c +++ b/drivers/mmc/host/mmci_stm32_sdmmc.c @@ -368,7 +368,8 @@ static void mmci_sdmmc_set_pwrreg(struct mmci_host *host, unsigned int pwr) if (dlyb && dlyb->ops->set_input_ck) dlyb->ops->set_input_ck(dlyb); - if (ios.power_mode == MMC_POWER_OFF) { + if (ios.power_mode == MMC_POWER_OFF || + ios.power_mode == MMC_POWER_UP) { /* Only a reset could power-off sdmmc */ reset_control_assert(host->rst); udelay(2); -- 2.53.0