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da850evm: pass board revision info to kernel

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there are two boards based on da850 SOC - OMAP-L138 and AM18x.
In order to differentiate between these two boards, revision id
is passed to kernel via second byte of ATAG_REVISION.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
This commit is contained in:
Manjunath Hadli 2011-10-10 21:06:38 +00:00 committed by Albert ARIBAUD
parent e8f473548a
commit 754f8cb689
2 changed files with 6 additions and 2 deletions
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6
board/davinci/da8xxevm/da850evm.c
View File

@ -147,6 +147,8 @@ static const struct lpsc_resource lpsc[] = {
#define CONFIG_DA850_EVM_MAX_CPU_CLK 300000000
#endif
#define REV_AM18X_EVM 0x100
/*
* get_board_rev() - setup to pass kernel board revision information
* Returns:
@ -172,7 +174,9 @@ u32 get_board_rev(void)
rev = 2;
else if (maxcpuclk >= 372000000)
rev = 1;
#ifdef CONFIG_DA850_AM18X_EVM
rev |= REV_AM18X_EVM;
#endif
return rev;
}

2
include/configs/da850_am18xxevm.h
View File

@ -44,7 +44,7 @@
#define CONFIG_SYS_HZ 1000
#define CONFIG_SKIP_LOWLEVEL_INIT
#define CONFIG_SYS_TEXT_BASE 0xc1080000
#define CONFIG_DA850_AM18X_EVM
/*
* Memory Info
*/