[U-Boot] [PATCH V2] imx: vf610 add get_cpu_rev

[Peng Fan]

Since we need to support runtime check for different drivers, we need
to add get_cpu_rev for vf610, otherwise there will be build errors.

This patch introduces a dummy CPU id which is not read from chip
silicon. Later when we can get the real id from chip, can fix the
value of MXC_CPU_VF610 then.

Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
Suggested-by: Stefano Babic <sbabic at denx.de>
Cc: Stefano Babic <sbabic at denx.de>
---

Changes v2:
 Take suggestion from Stefano, get_cpu_rev for vf610 should return an 
 ID saying dummy ID, but not 0.

 arch/arm/cpu/armv7/vf610/generic.c  | 6 ++++++
 arch/arm/include/asm/arch-imx/cpu.h | 1 +
 2 files changed, 7 insertions(+)

diff --git a/arch/arm/cpu/armv7/vf610/generic.c b/arch/arm/cpu/armv7/vf610/generic.c
index 05c401d..08b9ef4 100644
--- a/arch/arm/cpu/armv7/vf610/generic.c
+++ b/arch/arm/cpu/armv7/vf610/generic.c
@@ -9,6 +9,7 @@
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/crm_regs.h>
+#include <asm/imx-common/sys_proto.h>
 #include <netdev.h>
 #ifdef CONFIG_FSL_ESDHC
 #include <fsl_esdhc.h>
@@ -266,6 +267,11 @@ void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
 }
 #endif
 
+u32 get_cpu_rev(void)
+{
+	return MXC_CPU_VF610 << 12;
+}
+
 #if defined(CONFIG_DISPLAY_CPUINFO)
 static char *get_reset_cause(void)
 {
diff --git a/arch/arm/include/asm/arch-imx/cpu.h b/arch/arm/include/asm/arch-imx/cpu.h
index be13b96..1c8d24e 100644
--- a/arch/arm/include/asm/arch-imx/cpu.h
+++ b/arch/arm/include/asm/arch-imx/cpu.h
@@ -21,6 +21,7 @@
 #define MXC_CPU_MX6D		0x67
 #define MXC_CPU_MX6DP		0x68
 #define MXC_CPU_MX6QP		0x69
+#define MXC_CPU_VF610		0xF6 /* dummy ID */
 
 #define CS0_128					0
 #define CS0_64M_CS1_64M				1
-- 
1.8.4