ARM: imx7d: correct chip version information

The commond 'cat /sys/devices/soc0/revision' can
show correct soc version information.

"unknow revision" message in imx_print_silicon_rev()
will never work for digprog.

Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/mach-imx/anatop.c b/arch/arm/mach-imx/anatop.c
index 231bb250c5719d21962404a9301765cdcf499924..bd3555ee88c8bd8ff1352d2623c82abcd2d632b8 100644 (file)
--- a/arch/arm/mach-imx/anatop.c
+++ b/arch/arm/mach-imx/anatop.c
@@ -151,7 +151,14 @@ void __init imx_init_revision_from_anatop(void)
                revision = IMX_CHIP_REVISION_1_5;
                break;
        default:
-               revision = IMX_CHIP_REVISION_UNKNOWN;
+               /*
+                * Fail back to return raw register value instead of 0xff.
+                * It will be easy to know version information in SOC if it
+                * can't be recognized by known version. And some chip's (i.MX7D)
+                * digprog value match linux version format, so it needn't map
+                * again and we can use register value directly.
+                */
+               revision = digprog & 0xff;
        }
 
        mxc_set_cpu_type(digprog >> 16 & 0xff);