[PATCH v4 5/6] dt-bindings: PCI: spacemit: Introduce Spacemit K3 PCIe host controller
From: Inochi Amaoto <inochiama@gmail.com>
Date: 2026-07-09 04:01:33
Also in:
linux-pci, linux-riscv, lkml, spacemit
Subsystem:
open firmware and flattened device tree bindings, pci native host bridge and endpoint drivers, pci subsystem, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Lorenzo Pieralisi, Krzysztof Wilczyński, Manivannan Sadhasivam, Bjorn Helgaas, Linus Torvalds
Add binding support for the PCIe controller on the SpacemiT K3 SoC. This controller is almost a standard Synopsys DesignWare PCIe IP, with some extra link and reset state control. Signed-off-by: Inochi Amaoto <inochiama@gmail.com> --- .../bindings/pci/spacemit,k1-pcie-host.yaml | 50 ++++++++++++++++--- 1 file changed, 43 insertions(+), 7 deletions(-)
diff --git a/Documentation/devicetree/bindings/pci/spacemit,k1-pcie-host.yaml b/Documentation/devicetree/bindings/pci/spacemit,k1-pcie-host.yaml
index c4c00b5fcdc0..54817d6fd9af 100644
--- a/Documentation/devicetree/bindings/pci/spacemit,k1-pcie-host.yaml
+++ b/Documentation/devicetree/bindings/pci/spacemit,k1-pcie-host.yaml@@ -14,26 +14,29 @@ description: > PCIe IP. The controller uses the DesignWare built-in MSI interrupt controller, and supports 256 MSIs. -allOf: - - $ref: /schemas/pci/snps,dw-pcie.yaml# - properties: compatible: - const: spacemit,k1-pcie + enum: + - spacemit,k1-pcie + - spacemit,k3-pcie reg: + minItems: 4 items: - description: DesignWare PCIe registers - description: ATU address space - description: PCIe configuration space - description: Link control registers + - description: Data Bus Interface (DBI) shadow registers. reg-names: + minItems: 4 items: - const: dbi - const: atu - const: config - const: link + - const: dbi2 clocks: items:
@@ -66,6 +69,8 @@ properties: interrupt-names: const: msi + msi-parent: true + spacemit,apmu: $ref: /schemas/types.yaml#/definitions/phandle-array description:
@@ -84,7 +89,8 @@ patternProperties: properties: phys: - maxItems: 1 + minItems: 1 + maxItems: 6 vpcie3v3-supply: description:
@@ -96,13 +102,43 @@ patternProperties: unevaluatedProperties: false +allOf: + - $ref: /schemas/pci/snps,dw-pcie.yaml# + - if: + properties: + compatible: + contains: + const: spacemit,k1-pcie + then: + properties: + reg: + maxItems: 4 + + reg-names: + maxItems: 4 + + patternProperties: + '^pcie@': + properties: + phys: + maxItems: 1 + + required: + - interrupts + - interrupt-names + else: + properties: + reg: + minItems: 5 + + reg-names: + minItems: 5 + required: - clocks - clock-names - resets - reset-names - - interrupts - - interrupt-names - spacemit,apmu unevaluatedProperties: false
--
2.55.0