linux-kernel - [PATCH] ARM: debug: Add Iproc UART3 debug addresses

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Message-Id: <20180530122922.1041-1-peron.clem@gmail.com>
Date:   Wed, 30 May 2018 14:29:22 +0200
From:   Clément Péron <peron.clem@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>,
        linux-arm-kernel@...ts.infradead.org
Cc:     Russell King <linux@...linux.org.uk>, linux-kernel@...r.kernel.org,
        Tony Lindgren <tony@...mide.com>,
        Laura Abbott <labbott@...hat.com>,
        Scott Branden <sbranden@...adcom.com>,
        Jon Mason <jonmason@...adcom.com>, Ray Jui <rjui@...adcom.com>,
        BCM Kernel Feedback <bcm-kernel-feedback-list@...adcom.com>,
        Clément Peron <clement.peron@...ialet.com>
Subject: [PATCH] ARM: debug: Add Iproc UART3 debug addresses

From: Clément Peron <clement.peron@...ialet.com>

Broadcom Iproc SoCs typically use the UART3 for
debug/console, provide a known good location for that.

Signed-off-by: Clément Peron <clement.peron@...ialet.com>
---
 arch/arm/Kconfig.debug | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 199ebc1c4538..fa6fa1dae94d 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -207,6 +207,14 @@ choice
 		depends on ARCH_BCM_HR2
 		select DEBUG_UART_8250
 
+	config DEBUG_BCM_IPROC_UART3
+		bool "Kernel low-level debugging on BCM IPROC UART3"
+		depends on ARCH_BCM_CYGNUS
+		select DEBUG_UART_8250
+		help
+		  Say Y here if you want the debug print routines to direct
+		  their output to the third serial port on these devices.
+
 	config DEBUG_BCM_KONA_UART
 		bool "Kernel low-level debugging messages via BCM KONA UART"
 		depends on ARCH_BCM_MOBILE
@@ -1564,6 +1572,7 @@ config DEBUG_UART_PHYS
 	default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
 	default 0x20201000 if DEBUG_BCM2835
 	default 0x3f201000 if DEBUG_BCM2836
+	default 0x18023000 if DEBUG_BCM_IPROC_UART3
 	default 0x3e000000 if DEBUG_BCM_KONA_UART
 	default 0x4000e400 if DEBUG_LL_UART_EFM32
 	default 0x40028000 if DEBUG_AT91_SAMV7_USART1
@@ -1730,6 +1739,7 @@ config DEBUG_UART_VIRT
 	default 0xfe018000 if DEBUG_MMP_UART3
 	default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
 	default 0xfe230000 if DEBUG_PICOXCELL_UART
+	default 0xf1023000 if DEBUG_BCM_IPROC_UART3
 	default 0xfe300000 if DEBUG_BCM_KONA_UART
 	default 0xfe800000 if ARCH_IOP32X
 	default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HIX5HD2_UART
@@ -1791,7 +1801,7 @@ config DEBUG_UART_8250_WORD
 		DEBUG_KEYSTONE_UART0 || DEBUG_KEYSTONE_UART1 || \
 		DEBUG_ALPINE_UART0 || \
 		DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
-		DEBUG_DAVINCI_DA8XX_UART2 || \
+		DEBUG_DAVINCI_DA8XX_UART2 || DEBUG_BCM_IPROC_UART3 || \
 		DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2
 
 config DEBUG_UART_8250_PALMCHIP
-- 
2.17.0