mediatek/mt8183: postpone dcxo low power mode setting

Consider the association between modem[1] and DCXO, this patch is a fix for
eb5e47d("mediatek/mt8183: update dcxo output buffer setting") [2]
We should not disable XO_CEL and block the bblpm request when modem is still ON.
For power-saving, we still could disable unused XO_CEL and
mask request to disable unused power mode when modem is no longer be used.

[1] https://review.coreboot.org/c/coreboot/+/32666
[2] https://review.coreboot.org/c/coreboot/+/32323

BRANCH=none
TEST=Boots correctly on Krane.

Change-Id: I047ebed615e874977ca211aafd52b5551c71b764
Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34777
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/soc/mediatek/mt8183/soc.c b/src/soc/mediatek/mt8183/soc.c
index c9c2147cc8..21b2f811d6 100644
--- a/src/soc/mediatek/mt8183/soc.c
+++ b/src/soc/mediatek/mt8183/soc.c
@@ -17,6 +17,7 @@
 #include <soc/emi.h>
 #include <soc/md_ctrl.h>
 #include <soc/mmu_operations.h>
+#include <soc/rtc.h>
 #include <soc/sspm.h>
 #include <symbols.h>
 
@@ -29,6 +30,7 @@ static void soc_init(struct device *dev)
 {
 	mtk_mmu_disable_l2c_sram();
 	mtk_md_early_init();
+	mt6358_dcxo_disable_unused();
 	sspm_init();
 }