1 files changed, 19 insertions, 0 deletions

diff --git a/arch/arm/mach-zynq/slcr.c b/arch/arm/mach-zynq/slcr.c
index a37d49a6e657..c43a2d16e223 100644
--- a/arch/arm/mach-zynq/slcr.c
+++ b/arch/arm/mach-zynq/slcr.c
@@ -26,10 +26,13 @@
 #define SLCR_PS_RST_CTRL_OFFSET         0x200 /* PS Software Reset Control */
 #define SLCR_A9_CPU_RST_CTRL_OFFSET     0x244 /* CPU Software Reset Control */
 #define SLCR_REBOOT_STATUS_OFFSET       0x258 /* PS Reboot Status */
+#define SLCR_PSS_IDCODE                 0x530 /* PS IDCODE */
 
 #define SLCR_UNLOCK_MAGIC               0xDF0D
 #define SLCR_A9_CPU_CLKSTOP             0x10
 #define SLCR_A9_CPU_RST                 0x1
+#define SLCR_PSS_IDCODE_DEVICE_SHIFT    12
+#define SLCR_PSS_IDCODE_DEVICE_MASK     0x1F
 
 static void __iomem *zynq_slcr_base;
 static struct regmap *zynq_slcr_regmap;
@@ -83,6 +86,22 @@ static inline int zynq_slcr_unlock(void)
 }
 
 /**
+ * zynq_slcr_get_device_id - Read device code id
+ *
+ * Return:      Device code id
+ */
+u32 zynq_slcr_get_device_id(void)
+{
+        u32 val;
+
+        zynq_slcr_read(&val, SLCR_PSS_IDCODE);
+        val >>= SLCR_PSS_IDCODE_DEVICE_SHIFT;
+        val &= SLCR_PSS_IDCODE_DEVICE_MASK;
+
+        return val;
+}
+
+/**
  * zynq_slcr_system_reset - Reset the entire system.
  */
 void zynq_slcr_system_reset(void)