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soc/intel/ptl: Change ACPI name for IPU

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Change IPU name to 4 characters: IPU0

While the ACPI device name is 'IPU', some part of generated SSDT looks
for 'IPU_', since by convention, the names less than 4 characters is
padded with underscope ("_"). Please see APCI spec 5.3 ACPI Namespace.

BUG=none
TEST=Boot fatcat board to OS and check that IPU device name is IPU0 in
the SSDT.

Signed-off-by: Cliff Huang <cliff.huang@intel.com>
Change-Id: I60ce2998cb1d97589c0f7544ce8dc92c12a2b8c9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85274
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Cliff Huang 2024-11-22 16:18:16 -08:00 • committed by Subrata Banik
commit 35741f35ee
1 changed files with 1 additions and 1 deletions
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2
src/soc/intel/pantherlake/chip.c
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@ -84,7 +84,7 @@ const char *soc_acpi_name(const struct device *dev)
case PCI_DEVFN_THC0: return "THC0";
case PCI_DEVFN_THC1: return "THC1";
case PCI_DEVFN_NPU: return "NPU";
case PCI_DEVFN_IPU: return "IPU";
case PCI_DEVFN_IPU: return "IPU0";
case PCI_DEVFN_ISH: return "ISHB";
case PCI_DEVFN_XHCI: return "XHCI";
case PCI_DEVFN_SRAM: return "SRAM";