linux-kernel - [PATCH v8 03/11] ARM: brcmstb: add debug UART for earlyprintk support

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Date:	Mon, 21 Jul 2014 14:07:58 -0700
From:	Brian Norris <computersforpeace@...il.com>
To:	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>
Cc:	Matt Porter <mporter@...aro.org>,
	Christian Daudt <bcm@...thebug.org>,
	Russell King <linux@....linux.org.uk>,
	<linux-arm-kernel@...ts.infradead.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>,
	Gregory Fong <gregory.0xf0@...il.com>,
	Brian Norris <computersforpeace@...il.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Marc Carino <marc.ceeeee@...il.com>
Subject: [PATCH v8 03/11] ARM: brcmstb: add debug UART for earlyprintk support

From: Marc Carino <marc.ceeeee@...il.com>

Add the UART definitions needed to support earlyprintk on brcmstb machines.

Signed-off-by: Marc Carino <marc.ceeeee@...il.com>
Acked-by: Florian Fainelli <f.fainelli@...il.com>
Signed-off-by: Brian Norris <computersforpeace@...il.com>
---
 arch/arm/Kconfig.debug | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 8f90595069a1..89c06a8e810c 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -130,6 +130,17 @@ choice
 		  Say Y here if you want kernel low-level debugging support
 		  on Marvell Berlin SoC based platforms.
 
+	config DEBUG_BRCMSTB_UART
+		bool "Use BRCMSTB UART for low-level debug"
+		depends on ARCH_BRCMSTB
+		select DEBUG_UART_8250
+		help
+		  Say Y here if you want the debug print routines to direct
+		  their output to the first serial port on these devices.
+
+		  If you have a Broadcom STB chip and would like early print
+		  messages to appear over the UART, select this option.
+
 	config DEBUG_CLPS711X_UART1
 		bool "Kernel low-level debugging messages via UART1"
 		depends on ARCH_CLPS711X
@@ -1088,6 +1099,7 @@ config DEBUG_UART_PHYS
 	default 0xd4018000 if DEBUG_MMP_UART3
 	default 0xe0000000 if ARCH_SPEAR13XX
 	default 0xf0000be0 if ARCH_EBSA110
+	default 0xf040ab00 if DEBUG_BRCMSTB_UART
 	default 0xf1012000 if DEBUG_MVEBU_UART_ALTERNATE
 	default 0xf1012000 if ARCH_DOVE || ARCH_KIRKWOOD || ARCH_MV78XX0 || \
 				ARCH_ORION5X
@@ -1133,6 +1145,7 @@ config DEBUG_UART_VIRT
 	default 0xfa71e000 if DEBUG_QCOM_UARTDM
 	default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
 	default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
+	default 0xfc40ab00 if DEBUG_BRCMSTB_UART
 	default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
 	default 0xfd000000 if ARCH_SPEAR13XX
 	default 0xfd012000 if ARCH_MV78XX0
@@ -1186,7 +1199,8 @@ config DEBUG_UART_8250_WORD
 		ARCH_KEYSTONE || \
 		DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
 		DEBUG_DAVINCI_DA8XX_UART2 || \
-		DEBUG_BCM_KONA_UART
+		DEBUG_BCM_KONA_UART || \
+		DEBUG_BRCMSTB_UART
 
 config DEBUG_UART_8250_FLOW_CONTROL
 	bool "Enable flow control for 8250 UART"
-- 
1.9.1

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