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[U-Boot,v2,21/21] pcm052: bk4: Add board_phy_config() for BK4 to setup ksz8081 phy

Message ID 20190120133425.17526-22-lukma@denx.de
State Changes Requested
Delegated to: Stefano Babic
Headers show
Series imx: vybrid: Update BK4 and PCM052 boards to only use DM/DTS | expand

Commit Message

Lukasz Majewski Jan. 20, 2019, 1:34 p.m. UTC 
BK4 requires setup of 50MHz reference clock for its KSZ8081 PHY devices.

Signed-off-by: Lukasz Majewski <lukma@denx.de>

---

Changes in v2: None

 board/phytec/pcm052/pcm052.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
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Patch

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)