Use a define for the chip version mask on the axp209.

drivers/power/axp209.c

@@ -154,10 +154,13 @@ int axp_init(void)
 	if (rc)
 		return rc;
 
+#if 0
 	/* Low 4 bits is chip version */
 	ver &= 0x0f;
 
 	if (ver != 0x1)
+#endif
+	if ((ver & AXP209_CHIP_VERSION_MASK) != 0x1)
 		return -EINVAL;
 
 	/* Mask all interrupts */

include/axp209.h

@@ -26,6 +26,8 @@ enum axp209_reg {
 #define AXP209_POWER_STATUS_ON_BY_DC	BIT(0)
 #define AXP209_POWER_STATUS_VBUS_USABLE	BIT(4)
 
+#define AXP209_CHIP_VERSION_MASK	0x0f
+
 #define AXP209_OUTPUT_CTRL_EXTEN	BIT(0)
 #define AXP209_OUTPUT_CTRL_DCDC3	BIT(1)
 #define AXP209_OUTPUT_CTRL_LDO2		BIT(2)