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am335x: make get_board_rev() function weak 

Current get_board_rev() function returns a hard coded value which is
obviously incorrect for the majority of boards.
Allow boards to provide a correct implementation by making this
function weak.
In addition open code the trivial and useless BOARD_REV_ID define and
adjust the comment.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Cc: Tom Rini <trini@ti.com>
This commit is contained in:
Igor Grinberg 2014-11-05 13:29:54 +02:00 committed by Tom Rini
parent 60ca5ad4b6
commit 52d848695c
2 changed files with 4 additions and 5 deletions
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7
arch/arm/cpu/armv7/am33xx/sys_info.c
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@ -18,6 +18,7 @@
#include <asm/arch/cpu.h>
#include <asm/arch/clock.h>
#include <power/tps65910.h>
#include <linux/compiler.h>
struct ctrl_stat *cstat = (struct ctrl_stat *)CTRL_BASE;
@ -51,11 +52,11 @@ u32 get_cpu_type(void)
/**
* get_board_rev() - setup to pass kernel board revision information
* returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
* returns: 0 for the ATAG REVISION tag value.
*/
u32 get_board_rev(void)
u32 __weak get_board_rev(void)
{
return BOARD_REV_ID;
return 0;
}
/**

2
arch/arm/include/asm/arch-am33xx/sys_proto.h
View File

@ -14,8 +14,6 @@
#include <asm/ti-common/sys_proto.h>
#include <asm/arch/cpu.h>
#define BOARD_REV_ID 0x0
u32 get_cpu_rev(void);
u32 get_sysboot_value(void);