From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 53F3836EA8B; Wed, 20 May 2026 18:37:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779302260; cv=none; b=AluxTSv8puXo+p4jYRuHTG0arWwTm7lksQv0Af0vc1NbIMqLDesMAQqNF6LhWGQR2b35J1efWhH3RVyE+2ePxhnPqtaKA4kktjkY2rDjUP594SQ4b+tDHd3bs2riP+6O1zfAJ5TjtgL7APOypAH0rSztaUkHUafdG9KeMADnd2M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779302260; c=relaxed/simple; bh=+oom+7OEcN6hfOMTzCVw4Vc7QiTckGuD11cfKvoYv+w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BdQajwAnJMujH5pImEVIO3KZZ6MmCA8PbXzuNTsG2sLozS3Gwabve4c3PR15Bf/dr+jQggS95IQvxldfeNcxYoqQIQLnatj1MM50kzrMj+ncd0PbVQw2HTVem+85JFbkpzYgliOwOBr9FTbyTB7v7IUFapyeSqsDmp5GYAj4jTY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=OjGZctzS; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="OjGZctzS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B87A81F000E9; Wed, 20 May 2026 18:37:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1779302259; bh=OGT0uU9J1/OycRe9pKV3OAtZuZNtaOE3b814XgsYIZs=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=OjGZctzSoPojBZDIjGgRiixNcblxZcVYTjnXW3/UmJHfDL+eP3dQ/mXe5MZSfilCd JGfYnfkrQhKZ9/B9IscC06xNA1G3tq3723lQtp3AbZNayy+ReIJ+B0M33YHDyOo52F Ro7cehXk7//W1u58Gmwn1ftP1uOdHjzf9td/7zbE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Neil Armstrong , Konrad Dybcio , Vladimir Zapolskiy , Bjorn Andersson , Sasha Levin Subject: [PATCH 6.6 198/508] arm64: dts: qcom: sm8450: Enable UHS-I SDR50 and SDR104 SD card modes Date: Wed, 20 May 2026 18:20:21 +0200 Message-ID: <20260520162102.926591686@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260520162058.573354582@linuxfoundation.org> References: <20260520162058.573354582@linuxfoundation.org> User-Agent: quilt/0.69 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 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Vladimir Zapolskiy [ Upstream commit db0c5ef1abda6effdc5c85d6688fb6af2b351ae5 ] The reported problem of some non-working UHS-I speed modes on SM8450 originates in commit 0a631a36f724 ("arm64: dts: qcom: Add device tree for Sony Xperia 1 IV"), and then it was spread to all SM8450 powered platforms by commit 9d561dc4e5cc ("arm64: dts: qcom: sm8450: disable SDHCI SDR104/SDR50 on all boards"). The tests show that the rootcause of the problem was related to an overclocking of SD cards, and it's fixed later on by commit a27ac3806b0a ("clk: qcom: gcc-sm8450: Use floor ops for SDCC RCGs"). Since then both SDR50 and SDR104 speed modes are working fine on SM8450, tested on SM8450-HDK: SDR50 speed mode: mmc0: new UHS-I speed SDR50 SDHC card at address 0001 mmcblk0: mmc0:0001 00000 14.6 GiB mmcblk0: p1 % dd if=/dev/mmcblk0p1 of=/dev/null bs=1M count=1024 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 24.6254 s, 43.6 MB/s SDR104 speed mode: mmc0: new UHS-I speed SDR104 SDHC card at address 59b4 mmcblk0: mmc0:59b4 USDU1 28.3 GiB mmcblk0: p1 % dd if=/dev/mmcblk0p1 of=/dev/null bs=1M count=1024 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 12.3266 s, 87.1 MB/s Remove the restrictions on SD card speed modes from the SM8450 platform dtsi file and enable UHS-I speed modes. Fixes: 9d561dc4e5cc ("arm64: dts: qcom: sm8450: disable SDHCI SDR104/SDR50 on all boards") Reviewed-by: Neil Armstrong Reviewed-by: Konrad Dybcio Signed-off-by: Vladimir Zapolskiy Link: https://lore.kernel.org/r/20260314023715.357512-5-vladimir.zapolskiy@linaro.org Signed-off-by: Bjorn Andersson Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/qcom/sm8450.dtsi | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi index b745d8b476408..c1c62c6d34bd1 100644 --- a/arch/arm64/boot/dts/qcom/sm8450.dtsi +++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi @@ -4279,9 +4279,6 @@ sdhc_2: mmc@8804000 { bus-width = <4>; dma-coherent; - /* Forbid SDR104/SDR50 - broken hw! */ - sdhci-caps-mask = <0x3 0x0>; - status = "disabled"; sdhc2_opp_table: opp-table { -- 2.53.0