UART01x_DR         12 arch/arm/include/debug/pl01x.S #undef UART01x_DR
UART01x_DR         14 arch/arm/include/debug/pl01x.S #define UART01x_DR     0x04
UART01x_DR         20 include/linux/amba/serial.h #define UART01x_DR		0x00	/* Data read or written from the interface. */