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Tue, 26 Nov 2024 02:22:56 -0800 (PST) From: Neil Armstrong Date: Tue, 26 Nov 2024 11:22:49 +0100 Subject: [PATCH 1/3] dt-bindings: PCI: qcom,pcie-sm8550: document 'global' interrupt Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241126-topic-sm8x50-pcie-global-irq-v1-1-4049cfccd073@linaro.org> References: <20241126-topic-sm8x50-pcie-global-irq-v1-0-4049cfccd073@linaro.org> In-Reply-To: <20241126-topic-sm8x50-pcie-global-irq-v1-0-4049cfccd073@linaro.org> To: Bjorn Helgaas , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Manivannan Sadhasivam , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Neil Armstrong X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2273; i=neil.armstrong@linaro.org; h=from:subject:message-id; bh=3y33KwWV3X6ptS7V9W6/9HJibX4ha/yfLJjiTJa0VgA=; b=owEBbQKS/ZANAwAKAXfc29rIyEnRAcsmYgBnRaF9wevUPdMUYIutNZvInUfAq/oBR5ApvS691s2M lhUxmR2JAjMEAAEKAB0WIQQ9U8YmyFYF/h30LIt33NvayMhJ0QUCZ0WhfQAKCRB33NvayMhJ0cclEA C1iAj0zWzZ9YFUQdMHFxz1FrUJQLrlgSJw27jNJt3k8mgVXcJUZbRbdqqwtiIa1D5aZcldv2+v2KVB A1yG6l2UsGgLV2ciLU/cVdV1O2B30t9qvsNQ8Qtj7piyKchR+ekb1PJrDDmWXrPGoPd2/ek8JfLMAr HixKHM3zOQ0TRiimKFnfhEzZvf6kjd7CIB3zbJv3IniINoDP8xeuWSqm6ct2mB4LDkuU8QBvdiIYpW 6AUnrZZYidpu9d/2XPHIiu12S5XLJRUuDUv+POeDEFhhw2rv7LD1yolHog6qq6b2a967zUvupRLyDc 7iv51wUH5MuS9HvwvLhRz8o76ZwdFXAWDuqgbmMZ2s8H4K+y9h7b/KnJOD6jfDyRm7mYlNOTtCqdef Gb+NvobOoIVOpDgTiTSeBTybAytZPRnEntaMRpLtJC93ufg5CuAeTrhqOzle8+us3nfrr2dNurSWbg PrRRF6J/Y2+hv7U5BIO1UyKzkCeMCs0SItNbzzc84UbaVZLkzje+STMKlVz9LNmtJ9KuWiBjKf9t57 6TDSOJav9SnhElCnN84XBG4VS3fkvHcmUUOwGwUgYrM+F4j1k5Ujig1TjZl+aJYEDH72AHnGPrp29u wngL4wOoKH748Y9301DM3/SySc3+VOU/umwG61CnYU+BGggB9Q7vVpAz9Z8w== X-Developer-Key: i=neil.armstrong@linaro.org; a=openpgp; fpr=89EC3D058446217450F22848169AB7B1A4CFF8AE Qcom PCIe RC controllers are capable of generating 'global' SPI interrupt to the host CPU. This interrupt can be used by the device driver to handle PCIe link specific events such as Link up and Link down, which give the driver a chance to start bus enumeration on its own when link is up and initiate link training if link goes to a bad state. The PCIe driver can still work without this interrupt but it will provide a nice user experience when device gets plugged and removed. Document the interrupt as optional for SM8550 and SM8650 platforms. Signed-off-by: Neil Armstrong Acked-by: Manivannan Sadhasivam --- Documentation/devicetree/bindings/pci/qcom,pcie-sm8550.yaml | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-sm8550.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-sm8550.yaml index 24cb38673581d7391f877d3af5fadd6096c8d5be..19a614c74fa2aae94556ae3dfc24dcfcd520af11 100644 --- a/Documentation/devicetree/bindings/pci/qcom,pcie-sm8550.yaml +++ b/Documentation/devicetree/bindings/pci/qcom,pcie-sm8550.yaml @@ -55,9 +55,10 @@ properties: interrupts: minItems: 8 - maxItems: 8 + maxItems: 9 interrupt-names: + minItems: 8 items: - const: msi0 - const: msi1 @@ -67,6 +68,7 @@ properties: - const: msi5 - const: msi6 - const: msi7 + - const: global resets: minItems: 1 @@ -137,9 +139,10 @@ examples: , , , - ; + , + ; interrupt-names = "msi0", "msi1", "msi2", "msi3", - "msi4", "msi5", "msi6", "msi7"; + "msi4", "msi5", "msi6", "msi7", "global"; #interrupt-cells = <1>; interrupt-map-mask = <0 0 0 0x7>; interrupt-map = <0 0 0 1 &intc 0 0 0 149 IRQ_TYPE_LEVEL_HIGH>, /* int_a */