From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=178.251.229.89 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793397278; b=YqNZ4dEciTyyBhI/Qm6D70gSxfvynjzi+nqN/y8VS5L0HehMyqvhkCp1Lv2xO8mHS4pj 89os6msZq2u667OlXvhPw9DVfSWSZSvxilpZ2HQlefKC7F6WyZeXh85/sX1pUy9+d7Z5A MbUUy5bH3yueXZExQLXSMafP6whRIY9ROHwtcG7JcTSzF/kzRfJqZsBjohrOnYWoyBhKq WcQn2aM02+TDNNeRCd6JlOL8rLx1duvixEGlaDT8RkvqZM04hYZ2uQp+qTFFd27azEjpu chOcsO/yuYxYLwbFI7gNNarcJDll0JHaibvvjxzZOlIMPIpTex1PUeLx4gfIBoQ/GHQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793397278; h=DMARC-Filter:Received:DKIM-Signature:From:To:Cc:Subject:Date: Message-ID:X-Mailer:MIME-Version:Content-Transfer-Encoding: X-Last-TLS-Session-Version; bh=qJLnpzBdDvSSAoILaAVEaPeTNJiYyTIY+1V0RNSuyBI=; b=yQX9SZz6wsxAG87J18aV3ihcJav5hyLXqfdsib9apWMiPzQG+FdDygmYJ3s4zfUP2sj0 Mzx7hjX0chIr/6YqCCdx5K42j4WW3Cb69OssHQcLQwr7XNxzP388tc46MbKT27CTsNzSA S+kEM/u7Dszqr5IBOROirCp2RRk1EycjGLcpydwNjD+DcstBOOUdCbqGK0za7GDP2YohQ D930/SyoshuxQ4TPVUkzddMbyDQqhCitN2A8O6QyUjfO3rv+fKz1uO/3P6ej5tBDGD0JQ 23eelubumgZR2DSHbyS8LLRRIq67EHMeRGYtS888LDrpoETrDglIgki29CWhWc8rSGA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=nabladev.com; spf=pass smtp.mailfrom=nabladev.com; dkim=pass header.d=nabladev.com header.i=@nabladev.com header.a=rsa-sha256 header.s=dkim header.b=CWx+wXNf; arc=none smtp.remote-ip=178.251.229.89 Received: from mx.nabladev.com (mx.nabladev.com [178.251.229.89]) (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 4D60E606A31E; Fri, 30 Oct 2026 21:54:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 4D60E606A31E Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nabladev.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nabladev.com Authentication-Results: smtp.subspace.kernel.org; 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 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-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Last-TLS-Session-Version: TLSv1.3 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