From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from www522.your-server.de (www522.your-server.de [195.201.215.122]) (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 0A6EF150995; Wed, 27 Mar 2024 19:26:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.201.215.122 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711567621; cv=none; b=LNVr1qeYKApI31CAJ6xgqPy6IUobxpqPs1jm+iRxiZb4XerKVZvy7zchlZalPpBzXdHZ4ipktbOFkIRD1gAVBSZNXvzcWd6Rn5O4vDkd2XKH4dp7Knp8gEva1RQI2+huqTloEy/qhU/oKnku8sDV/skw5pq1Uv5evmbQHeqlDP4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711567621; c=relaxed/simple; bh=BdGRs6qmKCqEobusizZyGL8HkF9y+wpMy7VkdRUu0rk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Ouya1eX6EWgVbLRcFbg8LYmvUlxfXmecZ3ILE4F+x5Ot93V2YrK8qscdADTJ0IPmzIyR1Xc+e1r5HmmYu0TD/wBLIFI31Z3rLP3pOKw0cXfOfhdBY598Vwt6DyA2+Q/1nPY2U0UIpz/V9OyTjSFHjDXQtXyg65ICR4/qkVBh/4A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=folker-schwesinger.de; spf=pass smtp.mailfrom=folker-schwesinger.de; dkim=pass (2048-bit key) header.d=folker-schwesinger.de header.i=@folker-schwesinger.de header.b=cfBOblga; arc=none smtp.client-ip=195.201.215.122 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=folker-schwesinger.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=folker-schwesinger.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=folker-schwesinger.de header.i=@folker-schwesinger.de header.b="cfBOblga" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=folker-schwesinger.de; s=default2212; h=Content-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:Cc:To:From:Sender: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; bh=ewabUOMzJnwQzsx6uM+32Ptxk3uRoq9dz5K5trAa2Tw=; b=cfBOblgaCQsVMKWXs7JvuzXIpt 5KYTQCi9mGlYqAPuWWxGrm24kSe+DDWVQ30C72djLQTnWYRhzIK/9a9vk389Uas8F84Unksc8ZIdw E2I/OtC7o5MI/LqfegdkmnqysdsCiuQCctTu1SOGtIhrp4h0mBsPMO4PmHouM13JgazZ0evyYPJXj nM+ZyhQbo7gTQ6dPiZ9A6YKwLLCTlzZbV0XMNjtsxtS4uS+Zb/O0661CHcPLBkPboNhIeC7p0sFCc I++e6nX1rxgaogmbTKYecoFuISFtwPwsg93zg/trZm+HMoLs/MXQvaYj4t3pDKjouPY/bqMqr/Zi7 tQCC02PA==; Received: from sslproxy06.your-server.de ([78.46.172.3]) by www522.your-server.de with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1rpYvD-000IpD-Qg; Wed, 27 Mar 2024 20:26:51 +0100 Received: from [185.209.196.215] (helo=homedev.localdomain) by sslproxy06.your-server.de with esmtpsa (TLSv1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rpYvD-000Iyc-5O; Wed, 27 Mar 2024 20:26:51 +0100 From: Folker Schwesinger To: Vinod Koul , Yogesh Hegde , Heiko Stuebner , Chris Ruehl , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Folker Schwesinger , Dragan Simic , Christopher Obbard , linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH 0/2] Enable internal strobe pulldown on Radxa ROCK 4 SBCs Date: Wed, 27 Mar 2024 20:26:36 +0100 Message-ID: <20240327192641.14220-1-dev@folker-schwesinger.de> X-Mailer: git-send-email 2.44.0 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Authenticated-Sender: dev@folker-schwesinger.de X-Virus-Scanned: Clear (ClamAV 0.103.10/27227/Wed Mar 27 09:33:27 2024) Various RK3399 boards, including the ROCK Pi 4 series showed instabilities with some eMMC modules when operating in HS400 mode [1]. Later, a missing pull-down resistor on the eMMC strobe line was identified as the root cause of these instabilities [2]. This series enables the internal pull-down on the eMMC PHY strobe line for all ROCK 4 series boards as they all lack an external strobe pull-down resistor. Furthermore, HS400 mode is re-enabled for these boards. Previously, to workaround the instabilities until the issue was investigated further, HS400 mode was replaced with HS200 mode [1]. [1]: https://lore.kernel.org/all/20230705144255.115299-1-chris.obbard@collabora.com/ [2]: https://lore.kernel.org/all/20220822074139.3810-1-jensenhuang@friendlyarm.com/ Folker Schwesinger (2): arm64: dts: rockchip: Add enable-strobe-pulldown to emmc phy on ROCK Pi 4 arm64: dts: rockchip: Add enable-strobe-pulldown to emmc phy on ROCK 4C+ arch/arm64/boot/dts/rockchip/rk3399-rock-4c-plus.dts | 4 +++- arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-) base-commit: 4cece764965020c22cff7665b18a012006359095 -- 2.44.0