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 3368B36A375 for ; Thu, 11 Jun 2026 20:13:14 +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=1781208795; cv=none; b=c9SGH3oWPPgQgKIKKbGsUI/bdPJu0DjFcU6jmqi6JLHkyg7S/BkFCQyHeSxbyMP1csGQVrbcK2aADdyFCM25LsUw0tZzRm7nhSZ4kQ9yCwmVxB0fxssK440f5sztzhhDafBRewBHT/2Z9qCB/grpIv3xH5GBAqonZ4O/tK+cES0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781208795; c=relaxed/simple; bh=zHIffRj2jIJqYpl9gLeh1QaBNStYpt5XQozgoJrpnQs=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=UOrKaTOQkoL5Y4dqsgO5zY/V++lmBExX8xXaEy7MewVo8XfeVA5cVblmqDy7UfpO3LlS53/cmWVataX20h+64nKyKDPKU5/3tKpfDnXNASBD7Ds1gezQgjnv4T48+HTx6RI9ps5w2B0hKk+jfLw875eXayKLmUAJqQDPOYI9BBI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WgKufIYa; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="WgKufIYa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BFA801F00A3A; Thu, 11 Jun 2026 20:13:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781208793; bh=zHIffRj2jIJqYpl9gLeh1QaBNStYpt5XQozgoJrpnQs=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=WgKufIYa91pwLp3TEoekXp/gGGZyKb2djiY7q1rOzbPVadSFXD5NjH67PF6Vr34xo z6dIN4eoW2bllQUEaIm9Hea6qsJakFk8V1FoVmSJoH+mn85/cxDkIIU/o1tI9ckQw1 vewDSRGiEwTdqLkjkXoErfUkL3PhEAlBJsBg1SR2ZS9vrCqrBLgkvjqeysl8TlI5RP YwUGGnTxtch/837GJSjuDktxMHfmhoPdR5Aj0AWaDeaaoBJyilYQ2j6/rUCf8JdrYL sjEIrndRMxdq0eJhgM4Iu1OV4UOQt/A4I1rte1Tq1f1s4VbDKEJEllU5sqG6sAU4KA 43reLfCcJZxXw== From: sashiko-bot@kernel.org Subject: Re: [PATCH v6 2/3] PCI: rockchip-host: do not attempt 5.0 GT/s retraining Reply-To: sashiko-reviews@lists.linux.dev To: "Geraldo Nascimento" Cc: linux-pci@vger.kernel.org In-Reply-To: References: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 11 Jun 2026 20:13:13 +0000 Message-Id: <20260611201313.BFA801F00A3A@smtp.kernel.org> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > Drop the 5.0 GT/s Link Speed retraining from Rockchip PCIe Root > Complex Mode Operation, so called host driver. >=20 > The reason is that Shawn Lin from Rockchip has reiterated that there > may be danger of "catastrophic failure" in using their PCIe with > 5.0GT/s speeds. >=20 > While Rockchip has done so informally without issuing a proper errata, > and the particulars are thus unknown, this may cause data loss or > worse. >=20 > This change is corroborated by RK3399 official datasheet [1], which > states maximum link speed for this platform is 2.5 GT/s. >=20 > [1] https://opensource.rock-chips.com/images/d/d7/Rockchip_RK3399_Datashe= et_V2.1-20200323.pdf >=20 > Link: https://lore.kernel.org/all/ffd05070-9879-4468-94e3-b88968b4c21b@ro= ck-chips.com/ > Cc: stable@vger.kernel.org > Reported-by: Dragan Simic > Reported-by: Shawn Lin > Signed-off-by: Geraldo Nascimento Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/cover.1781207474.gi= t.geraldogabriel@gmail.com?part=3D2