From 397d7b0faea0ddd36f45c63ee728e6e18b3f8673 Mon Sep 17 00:00:00 2001 From: Aswath Govindraju Date: Fri, 4 Jun 2021 22:00:34 +0530 Subject: [PATCH] board: ti: am64x: Set the core voltage of USB PHY to 0.85V Set the core voltage of USB PHY in AM64x to 0.85V in spl_board_init(). Signed-off-by: Aswath Govindraju Signed-off-by: Lokesh Vutla Link: https://lore.kernel.org/r/20210604163043.12811-5-a-govindraju@ti.com --- board/ti/am64x/evm.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/board/ti/am64x/evm.c b/board/ti/am64x/evm.c index 35cd9e0..cdbb9a8 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 -- 2.7.4