John Su has uploaded this change for review.

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soc/amd/picasso: Add STAPM_TIME_CONSTANT DPTC parameter support

Add STAPM_TIME_CONSTANT DPTC parameter for clamshell/tablet mode.

BUG=b:170696020
BRANCH=zork
TEST=build

Signed-off-by: John Su <john_su@compal.corp-partner.google.com>
Change-Id: I42956efbb95e21e4e8d86a209e64d3b33bdefba8
---
M src/soc/amd/picasso/chip.h
M src/soc/amd/picasso/root_complex.c
2 files changed, 11 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/77/46377/1

diff --git a/src/soc/amd/picasso/chip.h b/src/soc/amd/picasso/chip.h
index 3098a81..2f207ba 100644
--- a/src/soc/amd/picasso/chip.h
+++ b/src/soc/amd/picasso/chip.h
@@ -114,6 +114,7 @@
 	/* 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 stapm_time_constant_tablet_mode;
 	uint32_t sustained_power_limit_tablet_mode;
 
 	/* PROCHOT_L de-assertion Ramp Time */
diff --git a/src/soc/amd/picasso/root_complex.c b/src/soc/amd/picasso/root_complex.c
index 174cddc..f61b33c 100644
--- a/src/soc/amd/picasso/root_complex.c
+++ b/src/soc/amd/picasso/root_complex.c
@@ -17,11 +17,12 @@
 
 enum {
 	ALIB_DPTCI_FUNCTION_ID = 0xc,
+	STAPM_TIME_CONSTANT = 0x1,
 	THERMAL_CONTROL_LIMIT_ID = 0x3,
 	SUSTAINED_POWER_LIMIT_PARAM_ID = 0x5,
 	FAST_PPT_LIMIT_PARAM_ID = 0x6,
 	SLOW_PPT_LIMIT_PARAM_ID = 0x7,
-	DPTC_TOTAL_UPDATE_PARAMS = 4,
+	DPTC_TOTAL_UPDATE_PARAMS = 5,
 };
 
 struct dptc_param {
@@ -34,11 +35,15 @@
 	struct dptc_param params[DPTC_TOTAL_UPDATE_PARAMS];
 } __packed;
 
-#define DPTC_INPUTS(_thermctllmit, _sustained, _fast, _slow)			\
+#define DPTC_INPUTS(_stapmtimeconstant, _thermctllmit, _sustained, _fast, _slow)\
 		{								\
 			.size = sizeof(struct dptc_input),			\
 			.params = {						\
 				{						\
+					.id = STAPM_TIME_CONSTANT,		\
+					.value = _stapmtimeconstant,		\
+				},						\
+				{						\
 					.id = THERMAL_CONTROL_LIMIT_ID,		\
 					.value = _thermctllmit,			\
 				},						\
@@ -200,11 +205,13 @@
 	if (!config->dptc_enable)
 		return;
 
-	struct dptc_input default_input = DPTC_INPUTS(config->thermctl_limit,
+	struct dptc_input default_input = DPTC_INPUTS(config->stapm_time_constant,
+							config->thermctl_limit,
 							config->sustained_power_limit,
 							config->fast_ppt_limit,
 							config->slow_ppt_limit);
 	struct dptc_input tablet_mode_input = DPTC_INPUTS(
+					config->stapm_time_constant_tablet_mode,
 					config->thermctl_limit_tablet_mode,
 					config->sustained_power_limit_tablet_mode,
 					config->fast_ppt_limit_tablet_mode,

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