[U-Boot] [PATCH] arm: mvebu: clearfog: reset uSOM onboard 1512 phy

[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 <patrick at blueri.se>
---
 board/solidrun/clearfog/clearfog.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/board/solidrun/clearfog/clearfog.c b/board/solidrun/clearfog/clearfog.c
index 2773f5957e..3a8257cac3 100644
--- a/board/solidrun/clearfog/clearfog.c
+++ b/board/solidrun/clearfog/clearfog.c
@@ -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 */
-- 
2.12.2