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Line 171 in README is describing that before relocation no code should use global variable because global variables are placed to BSS section which is initialized to 0 after relocation. On Versal platforms clock driver is initialized before relocation (via using dm,bootph-all flag in DT) and global variables are initialized which works if this is used only before relocation. But the variables are used after relocation too but values are zeroed which is ending up incorrect behavior. That's why place variables to data section to ensure that values are not cleared which is for now the quickest temporary solution. The correct way to do it is to move all global variables to private data to avoid it. Signed-off-by: Padmarao Begari <padmarao.begari@amd.com> Link: https://lore.kernel.org/r/20250218052419.1141139-1-padmarao.begari@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>