From bdc9fefcbf9c2b8c9b2db84de696ec894bc66341 Mon Sep 17 00:00:00 2001
From: Lukasz Majewski <lukma@denx.de>
Date: Wed, 13 Feb 2019 22:46:59 +0100
Subject: [PATCH] pcm052: bk4: Add board_phy_config() for BK4 to setup ksz8081
 phy

BK4 requires setup of 50MHz reference clock for its KSZ8081 PHY devices.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
---
 board/phytec/pcm052/pcm052.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/board/phytec/pcm052/pcm052.c b/board/phytec/pcm052/pcm052.c
index 1e443a5850..c30df5df9d 100644
--- a/board/phytec/pcm052/pcm052.c
+++ b/board/phytec/pcm052/pcm052.c
@@ -15,6 +15,7 @@
 #include <asm/arch/clock.h>
 #include <led.h>
 #include <environment.h>
+#include <miiphy.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -382,6 +383,21 @@ int board_late_init(void)
 
 	return 0;
 }
+
+/**
+ * KSZ8081
+ */
+#define MII_KSZ8081_REFERENCE_CLOCK_SELECT	0x1f
+#define RMII_50MHz_CLOCK	0x8180
+
+int board_phy_config(struct phy_device *phydev)
+{
+	/* Set 50 MHz reference clock */
+	phy_write(phydev, MDIO_DEVAD_NONE, MII_KSZ8081_REFERENCE_CLOCK_SELECT,
+		  RMII_50MHz_CLOCK);
+
+	return genphy_config(phydev);
+}
 #endif /* CONFIG_TARGET_BK4R1 */
 
 int checkboard(void)
-- 
2.25.1