From fa427438bd3f0e2d8a6dfd0f721f52aa950b52ee Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Wed, 11 May 2016 07:45:10 -0700 Subject: x86: baytrail: Add internal UART ASL description BayTrail integrates an internal ns15550 compatible UART (PNP0501). Its IRQ is hardwired to IRQ3 in old revision chipset, but in newer revision one IRQ4 is being used for ISA compatibility. Handle this correctly in the ASL file. Linux does not need this ASL, but Windows need this to correctly discover a COM port existing in the system so that Windows can show it in the 'Device Manager' window, and expose this COM port to any terminal emulation application. Signed-off-by: Bin Meng Reviewed-by: Simon Glass --- arch/x86/include/asm/arch-baytrail/acpi/irqlinks.asl | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/x86/include/asm/arch-baytrail/acpi/irqlinks.asl') diff --git a/arch/x86/include/asm/arch-baytrail/acpi/irqlinks.asl b/arch/x86/include/asm/arch-baytrail/acpi/irqlinks.asl index aa72085..0affa23 100644 --- a/arch/x86/include/asm/arch-baytrail/acpi/irqlinks.asl +++ b/arch/x86/include/asm/arch-baytrail/acpi/irqlinks.asl @@ -21,6 +21,10 @@ Scope (\) PRTF, 8, PRTG, 8, PRTH, 8, + Offset (0x88), + , 3, + UI3E, 1, + UI4E, 1 } } -- cgit v1.1