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of: earlycon: Initialize port fields from DT properties

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Read the optional "reg-offset", "reg-shift", "reg-io-width" and endianness
properties and initialize the respective struct uart_port field if found.

NB: These bindings are common to several drivers and the values merely
indicate the default value; the registering earlycon setup() method can
simply override the values if required.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Hurley 2016-01-16 15:23:43 -08:00 • committed by Greg Kroah-Hartman
parent 4d118c9a86
commit 088da2a176
3 changed files with 33 additions and 1 deletions
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1
include/linux/serial_core.h
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@ -360,6 +360,7 @@ extern const struct earlycon_id __earlycon_table_end[];
extern int setup_earlycon(char *buf);
extern int of_setup_earlycon(unsigned long addr, const struct earlycon_id *match,
unsigned long node,
const char *options);
struct uart_port *uart_get_console(struct uart_port *ports, int nr,