From 66dc205962c5a2c03b9861cd9ccc39178b49a003 Mon Sep 17 00:00:00 2001 From: Qiang Yu Date: Thu, 31 Oct 2024 20:08:59 -0700 Subject: [PATCH] dt-bindings: PCI: qcom,pcie-x1e80100: Add 'global' interrupt MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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. Hence, document it in the binding along with the existing MSI interrupts. Global interrupt is parsed as optional in driver, so adding it in bindings will not break the ABI. Link: https://lore.kernel.org/r/20241101030902.579789-3-quic_qianyu@quicinc.com Signed-off-by: Qiang Yu Signed-off-by: Krzysztof Wilczyński Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/pci/qcom,pcie-x1e80100.yaml | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-x1e80100.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-x1e80100.yaml index a9db0a231563..257068a18264 100644 --- a/Documentation/devicetree/bindings/pci/qcom,pcie-x1e80100.yaml +++ b/Documentation/devicetree/bindings/pci/qcom,pcie-x1e80100.yaml @@ -47,9 +47,10 @@ properties: interrupts: minItems: 8 - maxItems: 8 + maxItems: 9 interrupt-names: + minItems: 8 items: - const: msi0 - const: msi1 @@ -59,6 +60,7 @@ properties: - const: msi5 - const: msi6 - const: msi7 + - const: global resets: minItems: 1 @@ -130,9 +132,10 @@ 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 */ -- 2.25.1