diff mbox series

[v2,04/10] board: ti: am64x: Set the core voltage of USB PHY to 0.85V

Message ID 20210603060906.27658-5-a-govindraju@ti.com
State Changes Requested
Delegated to: Lokesh Vutla
Headers show
Series AM642-EVM: Add USB support | expand

Commit Message

Aswath Govindraju June 3, 2021, 6:08 a.m. UTC 
Set the core voltage of USB PHY in AM64x to 0.85V in spl_board_init().

Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
---
 board/ti/am64x/evm.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
diff mbox series

Patch

diff --git a/board/ti/am64x/evm.c b/board/ti/am64x/evm.c
index 35cd9e027c04..cdbb9a87bc44 100644
--- a/board/ti/am64x/evm.c
+++ b/board/ti/am64x/evm.c
@@ -152,3 +152,17 @@  int board_late_init(void)
 	return 0;
 }
 #endif
+
+#define CTRLMMR_USB0_PHY_CTRL	0x43004008
+#define CORE_VOLTAGE		0x80000000
+
+#ifdef CONFIG_SPL_BOARD_INIT
+void spl_board_init(void)
+{
+	u32 val;
+	/* Set USB PHY core voltage to 0.85V */
+	val = readl(CTRLMMR_USB0_PHY_CTRL);
+	val &= ~(CORE_VOLTAGE);
+	writel(val, CTRLMMR_USB0_PHY_CTRL);
+}
+#endif