[U-Boot] [PATCH 1/2] board: ge: bx50v3: fix AR8033 reset timing issue

ken <Ken Lin> yungching0725 at gmail.com
Wed Feb 1 19:59:09 UTC 2017


Add the delay (10ms) to ensure the clock is stable and to meet the clock-to-reset(1ms) requirement recommended in the AR8033 datasheet
---
 board/ge/bx50v3/bx50v3.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/board/ge/bx50v3/bx50v3.c b/board/ge/bx50v3/bx50v3.c
index 2fc1144..80b4ba1 100644
--- a/board/ge/bx50v3/bx50v3.c
+++ b/board/ge/bx50v3/bx50v3.c
@@ -103,8 +103,9 @@ static void setup_iomux_enet(void)
 
 	/* Reset AR8033 PHY */
 	gpio_direction_output(IMX_GPIO_NR(1, 28), 0);
-	udelay(500);
+	mdelay(10);
 	gpio_set_value(IMX_GPIO_NR(1, 28), 1);
+	mdelay(1);
 }
 
 static iomux_v3_cfg_t const usdhc2_pads[] = {
-- 
2.10.2



More information about the U-Boot mailing list