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Tue, 10 Jun 2025 20:59:56 -0700 (PDT) Received: from geday ([2804:7f2:800b:5f6a::dead:c001]) by smtp.gmail.com with ESMTPSA id 71dfb90a1353d-53113c0ee7fsm2411261e0c.41.2025.06.10.20.59.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Jun 2025 20:59:55 -0700 (PDT) Date: Wed, 11 Jun 2025 00:59:48 -0300 From: Geraldo Nascimento To: Bjorn Helgaas Cc: linux-rockchip@lists.infradead.org, Shawn Lin , Lorenzo Pieralisi , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Manivannan Sadhasivam , Rob Herring , Bjorn Helgaas , Heiko Stuebner , Vinod Koul , Kishon Vijay Abraham I , linux-phy@lists.infradead.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 1/4] PCI: pcie-rockchip: add bits for Target Link Speed in LCS_2 Message-ID: References: <20250610200744.GA820589@bhelgaas> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250610_205957_649994_3B65FC92 X-CRM114-Status: GOOD ( 12.03 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Jun 11, 2025 at 12:46:10AM -0300, Geraldo Nascimento wrote: > Hi again Bjorn, > > Your message reminded me of something that may be important. > > During my debugging I had the mild impression L0s capability is not > being cleared from Link Capabilities Register in the presence of > "aspm-no-l0s" DT property. > > I can't confirm it right now but I might revisit this later on. From > what I've seen it can only be cleared from inside the port init > in pcie-rockchip.c and does nothing in present form. > > Not a clear, confirmable report but something to watch out for... Not correct. ASPM bit for L0s is being properly cleared according to my printk's. Should have checked before creating noise. Sorry. Geraldo Nascimento > > Regards, > Geraldo Nascimento