[U-Boot] [PATCH v3 3/5] da850evm: pass board revision info to kernel

manjunath.hadli at ti.com
2011-10-11T07:06:38Z

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>
---
board/davinci/da8xxevm/da850evm.c | 6 +++++-
include/configs/da850_am18xevm.h | 2 +-
2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c
index 46924d3..34673bf 100644
--- a/board/davinci/da8xxevm/da850evm.c
+++ b/board/davinci/da8xxevm/da850evm.c
@@ -249,6 +249,8 @@ 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:
@@ -274,7 +276,9 @@ 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;
}

diff --git a/include/configs/da850_am18xevm.h b/include/configs/da850_am18xevm.h
index 92b83ff..ee574da 100644
--- a/include/configs/da850_am18xevm.h
+++ b/include/configs/da850_am18xevm.h
@@ -43,7 +43,7 @@
#define CONFIG_SYS_HZ 1000
#define CONFIG_SKIP_LOWLEVEL_INIT
#define CONFIG_SYS_TEXT_BASE 0xc1080000
-
+#define CONFIG_DA850_AM18X_EVM
/*
* Memory Info
*/
--
1.6.2.4