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 0A0E430F80 for ; Wed, 20 Sep 2023 12:41:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 85F9EC433CD; Wed, 20 Sep 2023 12:41:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1695213692; bh=lXnYU39OPapoTiKwcR3wfdmnpT1f0fgoi6hvK/S1CvM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2p6HZJuwavSk8A8kua4ouyspHymT2pQ2O85ElG+wWTNwCZEjm8yfmPtcYzlpaRzcJ UrWuU9Te9+t74mLo+0WVwmVFehkojULy9kPSNGIE6si6sW+fHHldQenTezVX2F/RqW 7w0MKdExe5FDD7MKmoElxeuayZfKrF56hUxKVrIs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jim Reinhart , James Autry , Matthew Maron , Giulio Benetti , Haibo Chen , Adrian Hunter , Ulf Hansson , Sasha Levin Subject: [PATCH 5.4 323/367] mmc: sdhci-esdhc-imx: improve ESDHC_FLAG_ERR010450 Date: Wed, 20 Sep 2023 13:31:40 +0200 Message-ID: <20230920112906.902056310@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230920112858.471730572@linuxfoundation.org> References: <20230920112858.471730572@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Giulio Benetti [ Upstream commit 5ae4b0d8875caa44946e579420c7fd5740d58653 ] Errata ERR010450 only shows up if voltage is 1.8V, but if the device is supplied by 3v3 the errata can be ignored. So let's check for if quirk SDHCI_QUIRK2_NO_1_8_V is defined or not before limiting the frequency. Cc: Jim Reinhart Cc: James Autry Cc: Matthew Maron Signed-off-by: Giulio Benetti Acked-by: Haibo Chen Acked-by: Adrian Hunter Link: https://lore.kernel.org/r/20230811214853.8623-1-giulio.benetti@benettiengineering.com Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin --- drivers/mmc/host/sdhci-esdhc-imx.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index b3f761eca8299..762288c6d30ce 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -153,8 +153,8 @@ #define ESDHC_FLAG_HS400 BIT(9) /* * The IP has errata ERR010450 - * uSDHC: Due to the I/O timing limit, for SDR mode, SD card clock can't - * exceed 150MHz, for DDR mode, SD card clock can't exceed 45MHz. + * uSDHC: At 1.8V due to the I/O timing limit, for SDR mode, SD card + * clock can't exceed 150MHz, for DDR mode, SD card clock can't exceed 45MHz. */ #define ESDHC_FLAG_ERR010450 BIT(10) /* The IP supports HS400ES mode */ @@ -777,7 +777,8 @@ static inline void esdhc_pltfm_set_clock(struct sdhci_host *host, | ESDHC_CLOCK_MASK); sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL); - if (imx_data->socdata->flags & ESDHC_FLAG_ERR010450) { + if ((imx_data->socdata->flags & ESDHC_FLAG_ERR010450) && + (!(host->quirks2 & SDHCI_QUIRK2_NO_1_8_V))) { unsigned int max_clock; max_clock = imx_data->is_ddr ? 45000000 : 150000000; -- 2.40.1