[U-Boot] [PATCH v4 22/22] pcm052: bk4: Add board_phy_config() for BK4 to setup ksz8081 phy

Lukasz Majewski
2019-02-13T21:46:59Z

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

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

---

Changes in v4: None
Changes in v3: None
Changes in v2: None

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)
--
2.11.0