From: "S. Fricke" <sfricke@xxxxxxxxxxxxxx>
This is mainly a backport of the imx6_revision function of
arch/arm/mach-imx/mach-imx6q.c in the linux kernel sources.
Signed-off-by: S. Fricke <sfricke@xxxxxxxxxxxxxx>
---
arch/arm/mach-imx/imx6.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/arch/arm/mach-imx/imx6.c b/arch/arm/mach-imx/imx6.c
index 5c20aa1..1d69ec8 100644
--- a/arch/arm/mach-imx/imx6.c
+++ b/arch/arm/mach-imx/imx6.c
@@ -16,8 +16,11 @@
#include <io.h>
#include <sizes.h>
#include <mach/generic.h>
+#include <mach/revision.h>
#include <mach/imx6-regs.h>
+#define SI_REV 0x260
+
void imx6_init_lowlevel(void)
{
void __iomem *aips1 = (void *)MX6_AIPS1_ON_BASE_ADDR;
@@ -55,8 +58,31 @@ void imx6_init_lowlevel(void)
static int imx6_init(void)
{
+ u32 rev;
+ u32 mx6_silicon_revision;
+
imx6_boot_save_loc((void *)MX6_SRC_BASE_ADDR);
+ rev = readl(MX6_ANATOP_BASE_ADDR + SI_REV);
+ switch (rev & 0xff) {
+ case 0x00:
+ mx6_silicon_revision = IMX_CHIP_REV_1_0;
+ break;
+
+ case 0x01:
+ mx6_silicon_revision = IMX_CHIP_REV_1_1;
+ break;
+
+ case 0x02:
+ mx6_silicon_revision = IMX_CHIP_REV_1_2;
+ break;
+
+ default:
+ mx6_silicon_revision = IMX_CHIP_REV_UNKNOWN;
+ }
+
+ imx_set_silicon_revision("i.MX6", mx6_silicon_revision);
+
if (of_get_root_node())
return 0;
--
1.8.3
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