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| author | Zheng Bao <fishbaozi@gmail.com> | 2022-08-25 17:11:38 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-09-14 20:24:00 +0000 |
| commit | 62cd5e86031415843b8a0429ec05cca11b528902 (patch) | |
| tree | 311c3156eeb93225504e6e0033cab5e9bb655539 /src/soc/amd/picasso/acpi.c | |
| parent | 41a8043bdf394e3420f79dd421486f137d899d55 (diff) | |
| download | coreboot-62cd5e86031415843b8a0429ec05cca11b528902.tar.gz coreboot-62cd5e86031415843b8a0429ec05cca11b528902.tar.bz2 coreboot-62cd5e86031415843b8a0429ec05cca11b528902.zip | |
soc/amd: Recalculate the field power in PSS table entry
Being divided by 1000 causes data loss and the loss is expand by
muliplication.
So we just set a lower divisor before muliplication.
BUG=b:185922528
Change-Id: Ib43103cc62c18debea3fd2c23d9c30fb0ecd781b
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67050
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Diffstat (limited to 'src/soc/amd/picasso/acpi.c')
| -rw-r--r-- | src/soc/amd/picasso/acpi.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/soc/amd/picasso/acpi.c b/src/soc/amd/picasso/acpi.c index 9c798caffd64..d075e052be6c 100644 --- a/src/soc/amd/picasso/acpi.c +++ b/src/soc/amd/picasso/acpi.c @@ -203,16 +203,17 @@ static uint32_t get_pstate_core_power(msr_t pstate_def) } /* Power in mW */ - power_in_mw = (voltage_in_uvolts) / 1000 * current_value_amps; + power_in_mw = (voltage_in_uvolts) / 10 * current_value_amps; switch (current_divisor) { case 0: + power_in_mw = power_in_mw / 100L; break; case 1: - power_in_mw = power_in_mw / 10L; + power_in_mw = power_in_mw / 1000L; break; case 2: - power_in_mw = power_in_mw / 100L; + power_in_mw = power_in_mw / 10000L; break; case 3: /* current_divisor is set to an undefined value.*/ |