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soc/amd/picasso: add dptc support

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add dptc support for different power parameter on tablet/clamshell mode

The BIOS may choose to adjust power and/or thermal parameters at its own
discretion. The DPTC interface(DPTCi) ALIB Function adds flexibility by
allowing  the BIOS to request power state changes independently of specific
 events.

BUG=b:157943445
BRANCH=none
TEST=Build.Generated ASL code from SSDT by acipgen_dptci().check the setting changed.

Signed-off-by: Chris Wang <chris.wang@amd.corp-partner.google.com>
Change-Id: Icae94103f254f8fdb84e6ee0f5404fb09fa97b2d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43408
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Chris Wang
2020-07-13 23:29:29 +08:00
committed by Furquan Shaikh
parent 2ce386a3c2
commit 4735b1c01b
2 changed files with 97 additions and 0 deletions
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8
src/soc/amd/picasso/chip.h
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@@ -90,6 +90,14 @@ struct soc_amd_picasso_config {
uint32_t stapm_time_constant;
uint32_t sustained_power_limit;
/* Enable dptc for tablet mode (0 = disable, 1 = enable) */
uint8_t dptc_enable;
/* STAPM Configuration for tablet mode (need enable dptc_enable first) */
uint32_t fast_ppt_limit_tablet_mode;
uint32_t slow_ppt_limit_tablet_mode;
uint32_t sustained_power_limit_tablet_mode;
/* PROCHOT_L de-assertion Ramp Time */
uint32_t prochot_l_deassertion_ramp_time;