--- zzzz-none-000/linux-3.10.107/include/dt-bindings/gpio/gpio.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/dt-bindings/gpio/gpio.h	2021-02-04 17:41:59.000000000 +0000
@@ -9,7 +9,33 @@
 #ifndef _DT_BINDINGS_GPIO_GPIO_H
 #define _DT_BINDINGS_GPIO_GPIO_H
 
+/* Bit 0 express polarity */
 #define GPIO_ACTIVE_HIGH 0
 #define GPIO_ACTIVE_LOW 1
 
+/* Bit 1 express single-endedness */
+#define GPIO_PUSH_PULL 0
+#define GPIO_SINGLE_ENDED 2
+
+/*
+ * Open Drain/Collector is the combination of single-ended active low,
+ * Open Source/Emitter is the combination of single-ended active high.
+ */
+#define GPIO_OPEN_DRAIN (GPIO_SINGLE_ENDED | GPIO_ACTIVE_LOW)
+#define GPIO_OPEN_SOURCE (GPIO_SINGLE_ENDED | GPIO_ACTIVE_HIGH)
+
+#define DRV_TYPE_D		0
+#define DRV_TYPE_C		1
+#define DRV_TYPE_B		3
+#define DRV_TYPE_A		7
+
+#define DRV_CAP_HIGH	0
+#define DRV_CAP_HALF	1
+#define DRV_CAP_QUARTER	2
+
+#define RES_10_KOHM	0
+#define RES_1_5_KOHM	1
+#define RES_35_KOHM	2
+#define RES_20_KOHM	3
+
 #endif