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-rw-r--r--src/mainboard/google/gru/bootblock.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mainboard/google/gru/bootblock.c b/src/mainboard/google/gru/bootblock.c
index 7359f2a302..c5ab28a7b0 100644
--- a/src/mainboard/google/gru/bootblock.c
+++ b/src/mainboard/google/gru/bootblock.c
@@ -44,6 +44,10 @@ void bootblock_mainboard_early_init(void)
*/
write32(&rk3399_grf->io_vsel, RK_SETBITS(1 << 0));
+ /* Scarlet gpio4cd iodomain is 1.8V */
+ if (IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET))
+ write32(&rk3399_grf->io_vsel, RK_SETBITS(1 << 3));
+
if (!IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET)) {
/* Enable rails powering GPIO blocks, among other things.
These are EC-controlled on Scarlet and already on. */