ar71xx: Bitmain Antminer S1/S3 set GPIO for USB Power

Antminers using the stock bootloader will not hash without this GPIO set.
Applies to DD and CC

Signed-off-by: L. D. Pinney <ldpinney@gmail.com>
Backport of r47261

git-svn-id: svn://svn.openwrt.org/openwrt/branches/chaos_calmer@47267 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-antminer-s1.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-antminer-s1.c
index 880bc72..0a81227 100644 (file)
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-antminer-s1.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-antminer-s1.c
@@ -26,7 +26,7 @@
 
 #define ANTMINER_S1_GPIO_LED_SYSTEM            23
 #define ANTMINER_S1_GPIO_LED_WLAN              0
-#define ANTMINER_S1_GPIO_USB_POWER             8
+#define ANTMINER_S1_GPIO_USB_POWER             26
 
 #define ANTMINER_S1_KEYSPOLL_INTERVAL  20      /* msecs */
 #define ANTMINER_S1_KEYSDEBOUNCE_INTERVAL (3 * ANTMINER_S1_KEYSPOLL_INTERVAL)

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-antminer-s3.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-antminer-s3.c
index aa54e9c..b77a6cc 100644 (file)
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-antminer-s3.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-antminer-s3.c
@@ -25,6 +25,7 @@
 #define ANTMINER_S3_GPIO_LED_WLAN              0
 #define ANTMINER_S3_GPIO_LED_SYSTEM            17
 #define ANTMINER_S3_GPIO_LED_LAN               22
+#define ANTMINER_S3_GPIO_USB_POWER             26
 
 #define ANTMINER_S3_GPIO_BTN_RESET             11
 
@@ -81,6 +82,10 @@ static void __init antminer_s3_setup(void)
        ath79_register_gpio_keys_polled(-1, ANTMINER_S3_KEYSPOLL_INTERVAL,
                                        ARRAY_SIZE(ANTMINER_S3_GPIO_keys),
                                        ANTMINER_S3_GPIO_keys);
+
+       gpio_request_one(ANTMINER_S3_GPIO_USB_POWER,
+                        GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
+                        "USB power");
        ath79_register_usb();
 
        ath79_register_m25p80(&ANTMINER_S3_flash_data);