[U-Boot] [PATCH] mx6: Read register revision from register

[Liu Hui-R64343]

Fabio,
________________________________________
From: u-boot-bounces at lists.denx.de [u-boot-bounces at lists.denx.de] on behalf of Fabio Estevam [fabio.estevam at freescale.com]
Sent: Tuesday, March 13, 2012 10:17 PM
To: u-boot at lists.denx.de
Cc: Estevam Fabio-R49496
Subject: [U-Boot] [PATCH] mx6: Read register revision from register

Instead of hardcoding the mx6 silicon revision, read it from the proper register.

Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
---
 arch/arm/cpu/armv7/mx6/soc.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
index 2ac74b5..639bf30 100644
--- a/arch/arm/cpu/armv7/mx6/soc.c
+++ b/arch/arm/cpu/armv7/mx6/soc.c
@@ -32,7 +32,8 @@

 u32 get_cpu_rev(void)
 {
-       int system_rev = 0x61000 | CHIP_REV_1_0;
+       int reg = readl(ANATOP_BASE_ADDR + 0x260) & 0xFF;
+       int system_rev = 0x61000 | 0x10 + reg;

This is not complete, you are still hard coding it. In fact,The ANATOP register contains both the chip ID and chip revision.

        return system_rev;
 }
--
1.7.1


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