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Disable devices through DEVDISR register of MPC8640D

Question asked by S A on Aug 2, 2017
Latest reply on Aug 15, 2017 by Pavel Chubakov


We were trying to disable TSEC1, TSEC2 (for using GPIO pins) and PCI2 (Unused) in the mpc8640d processor by setting respective fields in devdisr register. But when read back after setting, the changes were not reflected, i.e. reads the default value 0x0000_0000 (all devices enabled). Tried to do it both in the early stages of booting (in bootlaoder) and after the OS is loaded (vxWorks).