[U-Boot] [PATCH] mx6slevk: Fix the power up of the Ethernet PHY

Fabio Estevam festevam at gmail.com
Fri Mar 11 14:50:22 CET 2016


From: Fabio Estevam <fabio.estevam at nxp.com>

GPIO4_21 is the LAN8720 power pin, not the LAN8720 reset pin.

Fix that, so that we can have Ethernet functional again.

Signed-off-by: Fabio Estevam <fabio.estevam at nxp.com>
---
 board/freescale/mx6slevk/mx6slevk.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
index 4f816c4..f440ce6 100644
--- a/board/freescale/mx6slevk/mx6slevk.c
+++ b/board/freescale/mx6slevk/mx6slevk.c
@@ -57,7 +57,7 @@ DECLARE_GLOBAL_DATA_PTR;
 			PAD_CTL_DSE_80ohm | PAD_CTL_HYS |	\
 			PAD_CTL_SRE_FAST)
 
-#define ETH_PHY_RESET	IMX_GPIO_NR(4, 21)
+#define ETH_PHY_POWER	IMX_GPIO_NR(4, 21)
 
 int dram_init(void)
 {
@@ -154,10 +154,9 @@ static void setup_iomux_fec(void)
 {
 	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
 
-	/* Reset LAN8720 PHY */
-	gpio_direction_output(ETH_PHY_RESET , 0);
-	udelay(25000);
-	gpio_set_value(ETH_PHY_RESET, 1);
+	/* Power up LAN8720 PHY */
+	gpio_direction_output(ETH_PHY_POWER , 1);
+	udelay(15000);
 }
 
 #define USDHC1_CD_GPIO	IMX_GPIO_NR(4, 7)
-- 
1.9.1



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