soc/mediatek/mt8188: Update mtcmos settings for display and audio

- For display, only vdosys0_pwr_con and edp_tx_pwr_con settings are
  required.
- For audio, it requires powering on adsp_ao_pwr_con,
  adsp_infra_pwr_con and audio_pwr_con.
- Add new power domain data `ext_buck_iso_bits` for buck isolation
  control.

BUG=b:244208960
TEST=access display registers successfully.

Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Change-Id: I7f00bda0cc5c7f8dea55a564a0ff10ae601115b3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68489
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yidi Lin <yidilin@google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/soc/mediatek/mt8188/mtcmos.c b/src/soc/mediatek/mt8188/mtcmos.c
new file mode 100644
index 0000000000..3143b019f1
--- /dev/null
+++ b/src/soc/mediatek/mt8188/mtcmos.c
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
+
+#include <device/mmio.h>
+#include <soc/infracfg.h>
+#include <soc/mtcmos.h>
+#include <soc/spm.h>
+
+void mtcmos_set_scpd_ext_buck_iso(const struct power_domain_data *pd)
+{
+	clrbits32(&mtk_spm->ext_buck_iso, pd->ext_buck_iso_bits);
+}