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 BCD0F33D8 for ; Thu, 21 Aug 2025 13:28:44 +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=1755782924; cv=none; b=bMXhwSMPmS2i1+ptxUNG3800lSe0DbtjOz97iZG62BBHc0wBa7NVW6KnPa1qxZAR7qNLtHgNz+KbiO3+0+hTK8Pv9wVXpkpnLOSk4Z4OclknQ7eBKuO/N91pvnMTdW8YokpJLytLeVjJYJwUwnvC8dAgMTgxiAMVGTc+ZKKQRpU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755782924; c=relaxed/simple; bh=KfaAAUDOfutfjxyQRPviO7qmSZaHDC032R9gB9BajhU=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=ekDlhT+bV/JTqnvUTliTVsjG+BHXtm1VFlMvFncSIdKS5yPcLogJFVUyzq/REs19LzCX6kZQ1QhQxuu34Df9HujcIcKZfYl+9zN5M4398zDEyvG09xo3AJvRjLPc3CXpAgCEP6ucua3kKcOq2dwpJC8R7yhyuU5GWapsWJ+FvTM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=nGDBfLug; 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="nGDBfLug" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C21EC4CEEB; Thu, 21 Aug 2025 13:28:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1755782924; bh=KfaAAUDOfutfjxyQRPviO7qmSZaHDC032R9gB9BajhU=; h=Subject:To:Cc:From:Date:From; b=nGDBfLugu7FWJmU4jhhwuvvJZEWtHjZx14L4a6rpegsK+9uAS3xpCva+181lkERaB BPwmwQbiuRGb/nQ2EfTPkfeLo7E+a/nSD6TTS7LDRKuf1KIB9sHbkkbhlG2s/cPCDI 9rkFsOVzcAKOIA0KCqDTgoBzsu6Eufv5njBytwS4= Subject: FAILED: patch "[PATCH] PCI: rockchip: Set Target Link Speed to 5.0 GT/s before" failed to apply to 5.15-stable tree To: geraldogabriel@gmail.com,bhelgaas@google.com,mani@kernel.org,robin.murphy@arm.com Cc: From: Date: Thu, 21 Aug 2025 15:28:28 +0200 Message-ID: <2025082128-affix-false-013c@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 114b06ee108cabc82b995fbac6672230a9776936 # git commit -s git send-email --to '' --in-reply-to '2025082128-affix-false-013c@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 114b06ee108cabc82b995fbac6672230a9776936 Mon Sep 17 00:00:00 2001 From: Geraldo Nascimento Date: Mon, 30 Jun 2025 19:24:57 -0300 Subject: [PATCH] PCI: rockchip: Set Target Link Speed to 5.0 GT/s before retraining Rockchip controllers can support up to 5.0 GT/s link speed. But the driver doesn't set the Target Link Speed currently. This may cause failure in retraining the link to 5.0 GT/s if supported by the endpoint. So set the Target Link Speed to 5.0 GT/s in the Link Control and Status Register 2. Fixes: e77f847df54c ("PCI: rockchip: Add Rockchip PCIe controller support") Signed-off-by: Geraldo Nascimento [mani: fixed whitespace warning, commit message rewording, added fixes tag] Signed-off-by: Manivannan Sadhasivam Signed-off-by: Bjorn Helgaas Tested-by: Robin Murphy Cc: stable@vger.kernel.org Link: https://patch.msgid.link/0afa6bc47b7f50e2e81b0b47d51c66feb0fb565f.1751322015.git.geraldogabriel@gmail.com diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c index 383d20f98cc3..fb9ae3f158a8 100644 --- a/drivers/pci/controller/pcie-rockchip-host.c +++ b/drivers/pci/controller/pcie-rockchip-host.c @@ -342,6 +342,10 @@ static int rockchip_pcie_host_init_port(struct rockchip_pcie *rockchip) * Enable retrain for gen2. This should be configured only after * gen1 finished. */ + status = rockchip_pcie_read(rockchip, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL2); + status &= ~PCI_EXP_LNKCTL2_TLS; + status |= PCI_EXP_LNKCTL2_TLS_5_0GT; + rockchip_pcie_write(rockchip, status, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL2); status = rockchip_pcie_read(rockchip, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL); status |= PCI_EXP_LNKCTL_RL; rockchip_pcie_write(rockchip, status, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL);