Pixel device cluster topology error

cpuinfo detects all cores as ARM Cortex-A520

SoC name: Unknown
Microarchitectures:
8x Cortex-A520
Cores:
0: 1 processor (0), ARM Cortex-A520
1: 1 processor (1), ARM Cortex-A520
2: 1 processor (2), ARM Cortex-A520
3: 1 processor (3), ARM Cortex-A520
4: 1 processor (4), ARM Cortex-A520
5: 1 processor (5), ARM Cortex-A520
6: 1 processor (6), ARM Cortex-A520
7: 1 processor (7), ARM Cortex-A520
Clusters:
0: 8 processors (0-7), 0: 8 cores (0-7), ARM Cortex-A520
Logical processors (System ID):
0 (0)
1 (1)
2 (2)
3 (3)
4 (4)
5 (5)
6 (6)
7 (7)

Specs from gsmarena:

Pixel 9
Android 14, upgradable to Android 15
Google Tensor G4 (4 nm)
Octa-core (1x3.1 GHz Cortex-X4 & 3x2.6 GHz Cortex-A720 & 4x1.92 GHz Cortex-A520)

Pixel 10
Android 15
Google Tensor G5 (4 nm)
Octa-core (1x3.1 GHz Cortex-X4 & 3x2.6 GHz Cortex-A720 & 4x1.92 GHz Cortex-A520)

The issue was introduced in Dec 2024 Android 15 update, affecting all Pixel devices that run Android 15

Start by reproducing the cpuinfo output on an affected Pixel device running Android 15 and trace the ARM CPU topology detection entry point. Compare the reported clusters and microarchitectures with the Pixel specifications in the issue; done means the affected devices no longer report all cores as Cortex-A520.