arm: mvebu: clearfog: reset uSOM onboard 1512 phy

PATCH New Patrick Wildt 2 participants 2 messages May 9, 2017 – May 31, 2017

lore

Share & tools

lore

Patrick Wildt

author

2017-05-09 11:54 UTC #0 lore raw

PATCH 1/1 arm: mvebu: clearfog: reset uSOM onboard 1512 phy

Use GPIO19 which is wired to the uSOM phy reset signal in order to reset the uSOM's 1512 Gigabit Ethernet phy.

This GPIO is valid on ClearFog rev 2.1 and newer.

Taken from SolidRun's specialised u-boot, see
https://github.com/SolidRun/u-boot-armada38x/commit/f906e3df172e07ac82cdd87b278d7896949262ea

Signed-off-by Patrick Wildt <[email protected]>

---
 board/solidrun/clearfog/clearfog.c | 4 ++++
 1 file changed, 4 insertions(+)

board/solidrun/clearfog/clearfog.c +4 -0

index 2773f5957e..3a8257cac3 100644
@@ -131,8 +131,12 @@ int board_init(void)
 	/* Toggle GPIO41 to reset onboard switch and phy */
 	clrbits_le32(MVEBU_GPIO1_BASE + 0x0, BIT(9));
 	clrbits_le32(MVEBU_GPIO1_BASE + 0x4, BIT(9));
+	/* GPIO 19 on ClearFog rev 2.1 controls the uSOM onboard phy reset */
+	clrbits_le32(MVEBU_GPIO0_BASE + 0x0, BIT(19));
+	clrbits_le32(MVEBU_GPIO0_BASE + 0x4, BIT(19));
 	mdelay(1);
 	setbits_le32(MVEBU_GPIO1_BASE + 0x0, BIT(9));
+	setbits_le32(MVEBU_GPIO0_BASE + 0x0, BIT(19));
 	mdelay(10);
 
 	/* Init I2C IO expanders */

Signature · 1 line

2.12.2

Stefan Roese

2017-05-31 08:57 UTC #1 lore raw

PATCH 1/1 arm: mvebu: clearfog: reset uSOM onboard 1512 phy

Quoted 9 lines · Patrick Wildt

Use GPIO19 which is wired to the uSOM phy reset signal in order to reset the uSOM's 1512 Gigabit Ethernet phy.
This GPIO is valid on ClearFog rev 2.1 and newer.
Taken from SolidRun's specialised u-boot, see
https://github.com/SolidRun/u-boot-armada38x/commit/f906e3df172e07ac82cdd87b278d7896949262ea
Signed-off-by Patrick Wildt <[email protected]>

Applied to u-boot-marvell/master.

Thanks,
Stefan