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authorFrank Li <Frank.Li@freescale.com>2016-01-05 11:17:17 -0600
committerShawn Guo <shawnguo@kernel.org>2016-01-28 16:31:59 +0800
commite914ecebf12f39441c9d21c13dce728d6ff6a1f1 (patch)
tree6b069d43a37c17041ff5600547271d687755cec5
parent608f4f7e4e3d7dbc9d5bcaddf8663cc0560c4cd6 (diff)
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>
-rw-r--r--arch/arm/mach-imx/anatop.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/anatop.c b/arch/arm/mach-imx/anatop.c
index 231bb250c571..bd3555ee88c8 100644
--- 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);