HDA_RST_L is controlled by PCH/CPU.
As it stays low without LIO flex even on working board, that means PCH needs to detect something from LIO board to enable it.
So a small chance of bad connection.
But if you already discarded all connection problems, then bad PCH...
As it stays low without LIO flex even on working board, that means PCH needs to detect something from LIO board to enable it.
So a small chance of bad connection.
But if you already discarded all connection problems, then bad PCH...