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 44D99126BFA; Wed, 19 Feb 2025 17:46:00 +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=1739987161; cv=none; b=KcDB5LBd2GBk5Ze/qRPb4q3Y3BojuOIJwKfiW17LgtEHHClP0lqByXVWcLR//PF/sHrRaM0DP6mhtI4iUNcoCBf+cOfPW7NsB8Dkria5KNUY6uwNhRKenynAHzDPwG3qRBgo+stmX0BydsXSu00A7+wdnlPoavV4yc8TSiReWHU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739987161; c=relaxed/simple; bh=mHRhEBvpD1bsnQdjjXq4vxjKV6dJIAdVYqioCYQWdyU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=SSluttai/npMnGDHi8INjq2JFjpEQc0SQElBVYZTOo1pMr3zgO7BMlLoWSh5aeY4gLxEyf5bMBaHpFs8lFpQ/aydtMGZT0k0JhIFPAIlkiGCIyiaT5zdmm81aQ8M5DgNjTrHFSBWgMv4ld2PD6PV67bQkVv+3MDbxuCgDz5/Ez4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SGopIMVq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="SGopIMVq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 527FAC4CEDD; Wed, 19 Feb 2025 17:45:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1739987160; bh=mHRhEBvpD1bsnQdjjXq4vxjKV6dJIAdVYqioCYQWdyU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=SGopIMVqS5Hk9p5JoJ2VnAeelIeuwL0T5ZZZ+OkyawwkgMyV41CXKh2RHOcjkEZU7 9BD1Lq2lA73TEJgzm/8g/CEZcJkSk1uhnujkiek4N1+8QmXiAH3xS4HIX8DPF+Isoa ofNFjOWLWRTH7lomxG+p2mXde8A9Y3njeyMneknlj0yQW9lvOlP7ov/9czYG1938nA 2uDHy2yCZ+WODYErVWjnx7FyPgB1rG52ztSKzHZM3XzYmgF2eQbv/azEgQI10REXd/ RA3xe+lXrFbD1eOxSJ69byBA34/rR1Blb9oVS6BHJKBR/e3083/uQVVZ2Yk/eGV/fd mZfnZP+r2Xqeg== Date: Wed, 19 Feb 2025 18:45:55 +0100 From: Niklas Cassel To: Hans Zhang <18255117159@163.com> Cc: jingoohan1@gmail.com, shradha.t@samsung.com, manivannan.sadhasivam@linaro.org, lpieralisi@kernel.org, kw@linux.com, robh@kernel.org, bhelgaas@google.com, Frank.Li@nxp.com, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, rockswang7@gmail.com Subject: Re: [v3] PCI: dwc: Add the debugfs property to provide the LTSSM status of the PCIe link Message-ID: References: <20250214144618.176028-1-18255117159@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250214144618.176028-1-18255117159@163.com> On Fri, Feb 14, 2025 at 10:46:18PM +0800, Hans Zhang wrote: > Add the debugfs property to provide a view of the current link's LTSSM > status from the root port device. > > /sys/kernel/debug/dwc_pcie_/ltssm_status > > Signed-off-by: Hans Zhang <18255117159@163.com> > --- FWIW: Tested-by: Niklas Cassel