MLK-12551: imx6ul evk: fix 74LV OE usage

Fix 74LV OE gpio index. pinmux is correct, but gpio index is wrong, so gpio output will not have effect, since we use wrong GPIO5_IO18, but not correct GPIO5_IO8. And at the end of the initialization of 74lv init, should keep OE voltage level at LOW, but not high. Signed-off-by: Peng Fan <peng.fan@nxp.com> (cherry picked from commit be7654b4cd7edd456ca8d5df3a51cc04ee2fb8f4)

MLK-12551: imx6ul evk: fix 74LV OE usage
Fix 74LV OE gpio index. pinmux is correct, but gpio index is wrong, so gpio output will not have effect, since we use wrong GPIO5_IO18, but not correct GPIO5_IO8. And at the end of the initialization of 74lv init, should keep OE voltage level at LOW, but not high. Signed-off-by: Peng Fan <peng.fan@nxp.com> (cherry picked from commit be7654b4cd7edd456ca8d5df3a51cc04ee2fb8f4)
Peng Fan
1 parent 384e1c1f52
Showing 1 changed file with 2 additions and 8 deletions Side-by-side Diff
board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
 /*
- * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
@@ -97,7 +97,7 @@
 #define IOX_SDI IMX_GPIO_NR(5, 10)
 #define IOX_STCP IMX_GPIO_NR(5, 7)
 #define IOX_SHCP IMX_GPIO_NR(5, 11)
-#define IOX_OE IMX_GPIO_NR(5, 18)
+#define IOX_OE IMX_GPIO_NR(5, 8)
  
 static iomux_v3_cfg_t const iox_pads[] = {
 	/* IOX_SDI */
  
@@ -185,16 +185,12 @@
 	  * shift register will be output to pins
 	  */
 	gpio_direction_output(IOX_STCP, 1);
-
-	gpio_direction_output(IOX_OE, 1);
 };
  
 void iox74lv_set(int index)
 {
 	int i;
  
-	gpio_direction_output(IOX_OE, 0);
-
 	for (i = 7; i >= 0; i--) {
 		gpio_direction_output(IOX_SHCP, 0);
  
@@ -228,8 +224,6 @@
 	  * shift register will be output to pins
 	  */
 	gpio_direction_output(IOX_STCP, 1);
-
-	gpio_direction_output(IOX_OE, 1);
 };
1	1	/*
2		- * Copyright (C) 2015 Freescale Semiconductor, Inc.
	2	+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
3	3	*
4	4	* SPDX-License-Identifier: GPL-2.0+
5	5	*/
...	...	@@ -97,7 +97,7 @@
97	97	#define IOX_SDI IMX_GPIO_NR(5, 10)
98	98	#define IOX_STCP IMX_GPIO_NR(5, 7)
99	99	#define IOX_SHCP IMX_GPIO_NR(5, 11)
100		-#define IOX_OE IMX_GPIO_NR(5, 18)
	100	+#define IOX_OE IMX_GPIO_NR(5, 8)
101	101
102	102	static iomux_v3_cfg_t const iox_pads[] = {
103	103	/* IOX_SDI */
104	104
...	...	@@ -185,16 +185,12 @@
185	185	* shift register will be output to pins
186	186	*/
187	187	gpio_direction_output(IOX_STCP, 1);
188		-
189		- gpio_direction_output(IOX_OE, 1);
190	188	};
191	189
192	190	void iox74lv_set(int index)
193	191	{
194	192	int i;
195	193
196		- gpio_direction_output(IOX_OE, 0);
197		-
198	194	for (i = 7; i >= 0; i--) {
199	195	gpio_direction_output(IOX_SHCP, 0);
200	196
...	...	@@ -228,8 +224,6 @@
228	224	* shift register will be output to pins
229	225	*/
230	226	gpio_direction_output(IOX_STCP, 1);
231		-
232		- gpio_direction_output(IOX_OE, 1);
233	227	};
234	228
235	229