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Message-Id: <20231227182727.1747435-5-Frank.Li@nxp.com> Date: Wed, 27 Dec 2023 13:27:15 -0500 From: Frank Li <Frank.Li@....com> To: krzysztof.kozlowski@...aro.org Cc: Frank.Li@....com, bhelgaas@...gle.com, conor+dt@...nel.org, devicetree@...r.kernel.org, festevam@...il.com, helgaas@...nel.org, hongxing.zhu@....com, imx@...ts.linux.dev, kernel@...gutronix.de, krzysztof.kozlowski+dt@...aro.org, kw@...ux.com, l.stach@...gutronix.de, linux-arm-kernel@...ts.infradead.org, linux-imx@....com, linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org, lpieralisi@...nel.org, manivannan.sadhasivam@...aro.org, robh@...nel.org, s.hauer@...gutronix.de, shawnguo@...nel.org Subject: [PATCH v7 04/16] dt-bindings: imx6q-pcie: Add linux,pci-domain as required for iMX8MQ iMX8MQ have two pci controllers. Adds "linux,pci-domain" as required proptery for iMX8MQ to indicate pci controller index. This adjustment paves the way for eliminating the hardcoded check on the base register for acquiring the controller_id. ... if (dbi_base->start == IMX8MQ_PCIE2_BASE_ADDR) imx6_pcie->controller_id = 1; ... The controller_id is crucial and utilized for certain register bit positions. It must align precisely with the controller index in the SoC. An auto-incremented ID don't fit this case. The DTS or fuse configurations may deactivate specific PCI controllers. Signed-off-by: Frank Li <Frank.Li@....com> --- Notes: Change from v5 to v6 - rework commit message to explain why need required and why auto increase id not work Change from v4 to v5 - new patch at v5 .../bindings/pci/fsl,imx6q-pcie-common.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml index d91b639ae7ae7..8f39b4e6e8491 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml @@ -265,6 +265,17 @@ allOf: - const: apps - const: turnoff + - if: + properties: + compatible: + contains: + enum: + - fsl,imx8mq-pcie + - fsl,imx8mq-pcie-ep + then: + required: + - linux,pci-domain + additionalProperties: true ... -- 2.34.1
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