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serial: 8250_early: Add earlycon support for Synopsys DesignWare ABP UART

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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@huawei.com>
Tested-by: Jon Mason <jon.mason@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kefeng Wang 2016-05-11 14:06:01 +08:00 committed by Greg Kroah-Hartman
parent fc2af3348a
commit 01e4d27355
1 changed files with 1 additions and 0 deletions
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drivers/tty/serial/8250/8250_early.c
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@ -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