[openwrt/openwrt] ar71xx: fix and improve ALFA Network Tube2H support

[LEDE Commits]

pepe2k pushed a commit to openwrt/openwrt.git, branch lede-17.01:
https://git.lede-project.org/b07875308476fda1270bd780f95122421fde26d4

commit b07875308476fda1270bd780f95122421fde26d4
Author: Piotr Dymacz <pepe2k at gmail.com>
AuthorDate: Wed May 9 20:04:01 2018 +0200

    ar71xx: fix and improve ALFA Network Tube2H support
    
    Fix ART offset (make it universal for 8/16 MB versions of the board) and
    while at it, include also GPIO setup for h/w watchdog (EM6324QYSP5B).
    
    Fixes: FS#1532
    
    Signed-off-by: Piotr Dymacz <pepe2k at gmail.com>
---
 target/linux/ar71xx/files/arch/mips/ath79/mach-tube2h.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-tube2h.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-tube2h.c
index 19b32e2..06b3616 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-tube2h.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-tube2h.c
@@ -28,12 +28,15 @@
 #define TUBE2H_GPIO_LED_SIGNAL1		27
 #define TUBE2H_GPIO_EXT_LNA		28
 
+#define TUBE2H_GPIO_WDT_EN		22
+#define TUBE2H_GPIO_WDT_IN		18
+
 #define TUBE2H_GPIO_BTN_RESET		12
 
 #define TUBE2H_KEYS_POLL_INTERVAL	20	/* msecs */
 #define TUBE2H_KEYS_DEBOUNCE_INTERVAL	(3 * TUBE2H_KEYS_POLL_INTERVAL)
 
-#define TUBE2H_ART_ADDRESS		0x1f7f0000
+#define TUBE2H_ART_ADDRESS		0x1fff0000
 #define TUBE2H_LAN_MAC_OFFSET		0x06
 #define TUBE2H_CALDATA_OFFSET		0x1000
 
@@ -97,6 +100,14 @@ static void __init tube2h_setup(void)
 			GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
 			"external LNA0");
 
+	gpio_request_one(TUBE2H_GPIO_WDT_IN,
+			 GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
+			 "WDT input");
+
+	gpio_request_one(TUBE2H_GPIO_WDT_EN,
+			 GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
+			 "WDT enable");
+
 	ath79_register_wmac(art + TUBE2H_CALDATA_OFFSET, NULL);
 
 	ath79_register_m25p80(NULL);