diff options
Diffstat (limited to 'board/poppy/board.c')
| -rw-r--r-- | board/poppy/board.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/board/poppy/board.c b/board/poppy/board.c index de1cb0ed24..143b55176c 100644 --- a/board/poppy/board.c +++ b/board/poppy/board.c @@ -651,6 +651,14 @@ DECLARE_HOOK(HOOK_INIT, board_pmic_init, HOOK_PRIO_DEFAULT); /* Initialize board. */ static void board_init(void) { + /* + * This enables pull-down on F_DIO1 (SPI MISO), and F_DIO0 (SPI MOSI), + * whenever the EC is not doing SPI flash transactions. This avoids + * floating SPI buffer input (MISO), which causes power leakage (see + * b/64797021). + */ + NPCX_PUPD_EN1 |= (1 << NPCX_DEVPU1_F_SPI_PUD_EN); + /* Provide AC status to the PCH */ gpio_set_level(GPIO_PCH_ACOK, extpower_is_present()); |