linux-kernel - [PATCH v4] ARM: at91: debug: add lan966 support

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Message-ID: <20220513092530.19213-1-kavyasree.kotagiri@microchip.com>
Date:   Fri, 13 May 2022 14:55:30 +0530
From:   Kavyasree Kotagiri <kavyasree.kotagiri@...rochip.com>
To:     <linux@...linux.org.uk>, <linus.walleij@...aro.org>,
        <alexandre.belloni@...tlin.com>, <michael@...le.cc>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <UNGLinuxDriver@...rochip.com>,
        <Kavyasree.Kotagiri@...rochip.com>, <Manohar.Puri@...rochip.com>
Subject: [PATCH v4] ARM: at91: debug: add lan966 support

Add support for low-level debugging on FLEXCOM USART of
LAN966 SoC.

Signed-off-by: Kavyasree Kotagiri <kavyasree.kotagiri@...rochip.com>
---
v3 -> v4:
- changed SOC_LAN966x to SOC_LAN966.

 arch/arm/Kconfig.debug | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 0c9497d549e3..77b2db882e75 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -210,6 +210,26 @@ choice
 		  Say Y here if you want kernel low-level debugging support
 		  on the FLEXCOM3 port of SAMA7G5.
 
+	config DEBUG_AT91_LAN966_FLEXCOM
+		bool "Kernel low-level debugging on LAN966 FLEXCOM USART"
+		select DEBUG_AT91_UART
+		depends on SOC_LAN966
+		help
+		Say Y here if you want kernel low-level debugging support
+		on the FLEXCOM port of LAN966.
+
+		DEBUG_UART_PHYS | DEBUG_UART_VIRT
+
+		0xe0040200      | 0xfd040200     | FLEXCOM0
+		0xe0044200      | 0xfd044200     | FLEXCOM1
+		0xe0060200      | 0xfd060200     | FLEXCOM2
+		0xe0064200      | 0xfd064200     | FLEXCOM3
+		0xe0070200      | 0xfd070200     | FLEXCOM4
+
+		By default, enabling FLEXCOM3 port. Based on requirement, use
+		DEBUG_UART_PHYS and DEBUG_UART_VIRT configurations from above
+		table.
+
 	config DEBUG_BCM2835
 		bool "Kernel low-level debugging on BCM2835 PL011 UART"
 		depends on ARCH_BCM2835 && ARCH_MULTI_V6
@@ -1685,6 +1705,7 @@ config DEBUG_UART_PHYS
 	default 0xd4017000 if DEBUG_MMP_UART2
 	default 0xd4018000 if DEBUG_MMP_UART3
 	default 0xe0000000 if DEBUG_SPEAR13XX
+	default 0xe0064200 if DEBUG_AT91_LAN966_FLEXCOM
 	default 0xe1824200 if DEBUG_AT91_SAMA7G5_FLEXCOM3
 	default 0xe4007000 if DEBUG_HIP04_UART
 	default 0xe6c40000 if DEBUG_RMOBILE_SCIFA0
@@ -1805,6 +1826,7 @@ config DEBUG_UART_VIRT
 	default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
 	default 0xfcfe8600 if DEBUG_BCM63XX_UART
 	default 0xfd000000 if DEBUG_SPEAR3XX || DEBUG_SPEAR13XX
+	default 0xfd064200 if DEBUG_AT91_LAN966_FLEXCOM
 	default 0xfd531000 if DEBUG_STIH41X_SBC_ASC1
 	default 0xfd883000 if DEBUG_ALPINE_UART0
 	default 0xfdd32000 if DEBUG_STIH41X_ASC2
-- 
2.17.1