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[83.9.31.12]) by smtp.gmail.com with ESMTPSA id lg25-20020a170907181900b00a3c1e1ca800sm973242ejc.11.2024.02.10.09.10.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 10 Feb 2024 09:10:11 -0800 (PST) From: Konrad Dybcio Subject: [PATCH v2 0/3] Qualcomm PCIe RC shutdown & reinit Date: Sat, 10 Feb 2024 18:10:04 +0100 Message-Id: <20240210-topic-8280_pcie-v2-0-1cef4b606883@linaro.org> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAOytx2UC/x3MQQqAIBBA0avErBOmQUG7SkSEjTUbE40IpLsnL d/i/wqFs3CBsauQ+ZYiZ2ygvgN/rHFnJVszEJJGGlBdZxKvLFlckhdW3ulg7GAskoNWpcxBnv8 4ze/7ATcsVpVhAAAA To: Bjorn Andersson , Manivannan Sadhasivam , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas , Philipp Zabel Cc: linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , Konrad Dybcio , Bjorn Andersson X-Mailer: b4 0.13-dev-0438c This series implements shutdown & reinitialization of the PCIe RC on system suspend. Tested on 8280-crd. Changes in v2: * Rebase * Get rid of "Cache last icc bandwidth", use icc_enable instead * Don't permanently assert reset on clk enable fail in "Reshuffle reset.." * Drop fixes tag in "Reshuffle reset.." * Improve commit messages of "Reshuffle reset.." and "Implement RC shutdown.." * Only set icc tag on RPMh SoCs * Pick up rb Link to v1: https://lore.kernel.org/linux-arm-msm/20231227-topic-8280_pcie-v1-0-095491baf9e4@linaro.org/ Signed-off-by: Konrad Dybcio --- Konrad Dybcio (3): PCI: qcom: reshuffle reset logic in 2_7_0 .init PCI: qcom: Read back PARF_LTSSM register PCI: qcom: properly implement RC shutdown/power up drivers/pci/controller/dwc/Kconfig | 1 + drivers/pci/controller/dwc/pcie-qcom.c | 178 +++++++++++++++++++++++++-------- 2 files changed, 135 insertions(+), 44 deletions(-) --- base-commit: 445a555e0623387fa9b94e68e61681717e70200a change-id: 20240210-topic-8280_pcie-c94f58158029 Best regards, -- Konrad Dybcio