acpi-id: Reserve ACPI ID for IOMMU (#165)

RISC-V IOMMU can be implemented as a PCI device or a platform device. When it is a platform device, it can have dependency on PLIC/ACPI due to wired interrupts it may need. So, reserve the ACPI ID to support this use case. Signed-off-by: Sunil V L <[email protected]>
riscv-non-isa · May 20, 2024 · 20b8095 · 20b8095
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commit 20b8095
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diff --git a/acpi-id.adoc b/acpi-id.adoc
@@ -28,5 +28,6 @@ ACPI ID for any new device.
 | `RSCV0001`     | RISC-V Platform-Level Interrupt Controller (PLIC)
 | `RSCV0002`     | RISC-V Advanced Platform-Level Interrupt Controller (APLIC)
 | `RSCV0003`     | NS16650 UART compatible with an SPCR definition using `Interface Type` 0x12
+| `RSCV0004`     | RISC-V IOMMU implemented as a platform device
 2+| _Also see <<acpi-props-uart>>._
 |===