diff options
| author | Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com> | 2019-03-26 15:38:04 +0800 |
|---|---|---|
| committer | Julius Werner <jwerner@chromium.org> | 2019-06-21 00:06:02 +0000 |
| commit | c10af299aeed2a7d530fbabbaa55947d64712333 (patch) | |
| tree | 69e5e96372fa26c971208c7ad997e2a027314d4f /src/mainboard | |
| parent | 863853cd2d8e01db2045e73d96c502e4ecba8ad1 (diff) | |
mediatek/mt8183: Calibrate vsim2 to 2.7 V
The default voltage of vsim2 is set to 2.76V for sim card usage.
In general, 2.76V of vsim2 is composed of 2.7V main voltage and 0.06V calibration voltage.
However, vsim2 is used for the tx_ovdd power of display port IT6505 on the kukui board design which needs 2.7V.
So we set it to 2.7V with modifying calibration value.
BUG=b:126139364
BRANCH=none
TEST=measure vsim2 voltage with multimeter
Change-Id: I4dffdde89cbde91286d92e6c2b445f0b3d0ad2fe
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32057
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/kukui/romstage.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mainboard/google/kukui/romstage.c b/src/mainboard/google/kukui/romstage.c index baaca43b90..1465243f07 100644 --- a/src/mainboard/google/kukui/romstage.c +++ b/src/mainboard/google/kukui/romstage.c @@ -29,6 +29,8 @@ void platform_romstage_main(void) mainboard_early_init(); mt6358_init(); + /* Adjust VSIM2 down to 2.7V because it is shared with IT6505. */ + pmic_set_vsim2_cali(2700); mt_pll_raise_ca53_freq(1989 * MHz); rtc_boot(); mt_mem_init(get_sdram_config()); |