Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0c532546 authored by Mans Rullgard's avatar Mans Rullgard Committed by Olof Johansson
Browse files

ARM: debug: add support for Palmchip BK-310x UART 



Some SoCs use a Palmchip BK-310x UART which is mostly 16550 compatible
but with a different register layout. While this UART has previously
only been supported in MIPS based chips (Alchemy, Ralink), the ARM based
SMP87xx series from Sigma Designs also uses it.

This patch allows the debug console to work with this type of UART.

Signed-off-by: default avatarMans Rullgard <mans@mansr.com>
Signed-off-by: default avatarMarc Gonzalez <marc_gonzalez@sigmadesigns.com>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Acked-by: default avatarKevin Hilman <khilman@baylibre.com>
Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
parent 388f7b1d

arch/arm/Kconfig.debug

+9 −0
Original line number Diff line number Diff line
@@ -1368,6 +1368,7 @@ config DEBUG_SIRFSOC_UART 
config DEBUG_LL_INCLUDE

	string

	default "debug/sa1100.S" if DEBUG_SA1100

	default "debug/palmchip.S" if DEBUG_UART_8250_PALMCHIP

	default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250

	default "debug/at91.S" if DEBUG_AT91_UART

	default "debug/asm9260.S" if DEBUG_ASM9260_UART
@@ -1656,6 +1657,14 @@ config DEBUG_UART_8250_WORD 
		DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2 || \

		DEBUG_BRCMSTB_UART



config DEBUG_UART_8250_PALMCHIP

	bool "8250 UART is Palmchip BK-310x"

	depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250

	help

	  Palmchip provides a UART implementation compatible with 16550

	  except for having a different register layout.  Say Y here if

	  the debug UART is of this type.



config DEBUG_UART_8250_FLOW_CONTROL

	bool "Enable flow control for 8250 UART"

	depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250

arch/arm/include/debug/palmchip.S

0 → 100644
+11 −0
Original line number Diff line number Diff line 
#include <linux/serial_reg.h>



#undef UART_TX

#undef UART_LSR

#undef UART_MSR



#define UART_TX 1

#define UART_LSR 7

#define UART_MSR 8



#include <debug/8250.S>