Revert "ar71xx: fix Arduino Yun enabling of level shifters outputs"

This reverts commit 077253dd666a30ae5231c3748222d4b5b138593d.

The output enable pins should be disabled by default, and only enabled when
used. Otherwise unwanted conflicts might occur between MCU and SoC pins.

Signed-off-by: Sungbo Eo <[email protected]>

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-arduino-yun.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-arduino-yun.c
index e92f68f490a14b38a0aef9afb6008a1d5fab6275..5873248edf2cc808629d3589170e28aed2675574 100644 (file)
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-arduino-yun.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-arduino-yun.c
@@ -141,7 +141,7 @@ static void __init ds_setup(void)
 
        // enable OE of level shifter
        if (gpio_request_one(DS_GPIO_OE,
-           GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED, "OE-1") != 0)
+           GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "OE-1") != 0)
                printk("Error setting GPIO OE\n");
 
        if (gpio_request_one(DS_GPIO_UART_ENA,
@@ -150,7 +150,7 @@ static void __init ds_setup(void)
 
        // enable OE of level shifter
        if (gpio_request_one(DS_GPIO_OE2,
-           GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED, "OE-2") != 0)
+           GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "OE-2") != 0)
                printk("Error setting GPIO OE2\n");
 }