diff options
| author | Sen Chu <sen.chu@mediatek.corp-partner.google.com> | 2022-09-05 19:19:48 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-09-09 10:43:43 +0000 |
| commit | a292f41faef437555c675d50090dc107bfff375e (patch) | |
| tree | a986b9719009afb7067af0175991328549452b00 /src/soc/mediatek/mt8186 | |
| parent | ad0288a843ab65f2a567cf6095c129e2ca8e8476 (diff) | |
soc/mediatek/mt8186: Enable CPU power hardware tracking for PMIC MT6366
1. There are two power sources for CPU:
- Logic power (VPROC).
- SRAM power (VSRAM_PROC).
2. There is a constraint between VPROC and VSRAM_PROC:
- 0mV <= VSRAM_PROC - VPROC <= 250mV.
With software control, the constraint might not always hold. Therefore,
we enable hardware tracking from PMIC MT6366 to ensure the constraint
is met automatically.
BUG=b:236353282, b:241615706
TEST=meet the constrain correctly when adjusting the voltage.
Signed-off-by: Sen Chu <sen.chu@mediatek.corp-partner.google.com>
Change-Id: I6012c57e60c009f1d599b57aab1c2526ee789208
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67436
Reviewed-by: Yidi Lin <yidilin@google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/mediatek/mt8186')
| -rw-r--r-- | src/soc/mediatek/mt8186/mt6366.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8186/mt6366.c b/src/soc/mediatek/mt8186/mt6366.c index af5403a55d..92174c0fe3 100644 --- a/src/soc/mediatek/mt8186/mt6366.c +++ b/src/soc/mediatek/mt8186/mt6366.c @@ -159,6 +159,15 @@ static struct pmic_setting init_setting[] = { {0x1A56, 0x7FFF, 0x7FFF, 0}, {0x1B48, 0x10, 0x7F, 0}, {0x1B4A, 0xF15, 0x7F7F, 0}, + /* Enable HW Tracking */ + {0x1B66, 0x10, 0x7F, 8}, + {0x1B68, 0x38, 0x7F, 0}, + {0x1B68, 0x63, 0x7F, 8}, + {0x1B64, 0x6, 0x7, 0}, + {0x1B6E, 0x10, 0x7F, 8}, + {0x1B70, 0x38, 0x7F, 0}, + {0x1B70, 0x63, 0x7F, 8}, + {0x1B6C, 0x6, 0x7, 0}, {0x1B8A, 0x10, 0x7F, 0}, {0x1B8C, 0xF15, 0x7F7F, 0}, {0x1BA8, 0x10, 0x7F, 0}, |