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 AA65F28D8E8; Thu, 27 Nov 2025 14:58:05 +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=1764255485; cv=none; b=GiHYdP2BdvhSuRU3Bz/Qmld+ZgyYptyTTFi1n6pdEptvD5LExqTya9+H9pwqcbEBBLfPOArXIUhP1EEOTdwwOTVsCQNGoPqZRWbhWYEPrbbXLxh4mbzsGrtcsdYMMhIr1Si+Xs0NsYmZPz7gHoxlvPjaEHPieI3rYUL78TBkTRY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764255485; c=relaxed/simple; bh=sr+9PST12/JLU0Fa5wb1L3qfkHJzk1LqrdOXMROlxuY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JxvGm/ieNKBS4L58ppyVLLk3d+XE4iNc2ph2gakkLnTj/G6hFpc5nt3IZuFYo2/mDkIhcYrUrCQrgpsHnTTEyD44KMOElqTvHMPyAcAELku6/CxBVHX8ztiIxsHjrRi5c0I0AlCjhzdyBsxuAbgGsYtNG0WqghlGQHjBWqNtHcQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=DJCz41ZV; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="DJCz41ZV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 35191C4CEF8; Thu, 27 Nov 2025 14:58:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1764255485; bh=sr+9PST12/JLU0Fa5wb1L3qfkHJzk1LqrdOXMROlxuY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DJCz41ZVzuzCt2tImJm7W5h8aJS//Vy8qSgrWM6IdaQcJ912T5sw7nBKnAIHAPSlW QPrSKoFWMPE9OM4FFoimK7f5hQD+dcdTjeHYbf2ueHPkF9PIVXusWIq2qmEnaShD5H 2uFamhJBgm9dlZ+NaN+OhaFDRYlvuQ24FqlwHr58= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Quentin Schulz , Heiko Stuebner Subject: [PATCH 6.17 010/175] arm64: dts: rockchip: disable HS400 on RK3588 Tiger Date: Thu, 27 Nov 2025 15:44:23 +0100 Message-ID: <20251127144043.333267719@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251127144042.945669935@linuxfoundation.org> References: <20251127144042.945669935@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Quentin Schulz commit baa18d577cd445145039e731d3de0fa49ca57204 upstream. We've had reports from the field that some RK3588 Tiger have random issues with eMMC errors. Applying commit a28352cf2d2f ("mmc: sdhci-of-dwcmshc: Change DLL_STRBIN_TAPNUM_DEFAULT to 0x4") didn't help and seemed to have made things worse for our board. Our HW department checked the eMMC lines and reported that they are too long and don't look great so signal integrity is probably not the best. Note that not all Tigers with the same eMMC chip have errors, so the suspicion is that we're really on the edge in terms of signal integrity and only a handful devices are failing. Additionally, we have RK3588 Jaguars with the same eMMC chip but the layout is different and we also haven't received reports about those so far. Lowering the max-frequency to 150MHz from 200MHz instead of simply disabling HS400 was briefly tested and seem to work as well. We've disabled HS400 downstream and haven't received reports since so we'll go with that instead of lowering the max-frequency. Signed-off-by: Quentin Schulz Fixes: 6173ef24b35b ("arm64: dts: rockchip: add RK3588-Q7 (Tiger) SoM") Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20251112-tiger-hs200-v1-1-b50adac107c0@cherry.de [added Fixes tag and stable-cc from 2nd mail] Signed-off-by: Heiko Stuebner Signed-off-by: Greg Kroah-Hartman --- arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi @@ -382,14 +382,12 @@ cap-mmc-highspeed; mmc-ddr-1_8v; mmc-hs200-1_8v; - mmc-hs400-1_8v; - mmc-hs400-enhanced-strobe; mmc-pwrseq = <&emmc_pwrseq>; no-sdio; no-sd; non-removable; pinctrl-names = "default"; - pinctrl-0 = <&emmc_bus8 &emmc_cmd &emmc_clk &emmc_data_strobe>; + pinctrl-0 = <&emmc_bus8 &emmc_cmd &emmc_clk>; vmmc-supply = <&vcc_3v3_s3>; vqmmc-supply = <&vcc_1v8_s3>; status = "okay";