linux-kernel - [PATCH] serial: 8250_early: Add earlycon support for Synopsys DesignWare ABP UART

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Date:	Wed, 11 May 2016 14:06:01 +0800
From:	Kefeng Wang <wangkefeng.wang@...wei.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	Jiri Slaby <jslaby@...e.com>, <linux-serial@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <guohanjun@...wei.com>,
	Wei Xu <xuwei5@...ilicon.com>,
	Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH] serial: 8250_early: Add earlycon support for Synopsys DesignWare ABP UART

Some board like Hisilicon D02 uses Synopsys DesignWare ABP UART, declare an
OF early console for it, so early console device can be enabled with comand
line "earlycon"(without option) via the "stdout-path" property in device-tree.

Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 drivers/tty/serial/8250/8250_early.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c
index 8d08ff5..85a12f0 100644
--- a/drivers/tty/serial/8250/8250_early.c
+++ b/drivers/tty/serial/8250/8250_early.c
@@ -150,6 +150,7 @@ EARLYCON_DECLARE(uart, early_serial8250_setup);
 OF_EARLYCON_DECLARE(ns16550, "ns16550", early_serial8250_setup);
 OF_EARLYCON_DECLARE(ns16550a, "ns16550a", early_serial8250_setup);
 OF_EARLYCON_DECLARE(uart, "nvidia,tegra20-uart", early_serial8250_setup);
+OF_EARLYCON_DECLARE(uart, "snps,dw-apb-uart", early_serial8250_setup);
 
 #ifdef CONFIG_SERIAL_8250_OMAP
 
-- 
2.6.0.GIT