[coreboot-gerrit] Change in coreboot[master]: soc/intel/alderlake: Allow thermal configuration for ADL

[Subrata Banik (Code Review)]

Attention is currently required from: Tim Wawrzynczak, Patrick Rudolph.
Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/59271 )

Change subject: soc/intel/alderlake: Allow thermal configuration for ADL
......................................................................

soc/intel/alderlake: Allow thermal configuration for ADL

Thermal configuration registers are now located behind PMC PWRMBASE
for Alder Lake Point PCH. Hence, ADL SoC to select
SOC_INTEL_COMMON_BLOCK_THERMAL_BEHIND_PMC to let thermal low threshold
is being set as per mainboard provided `pch_thermal_trip`.

Note: These thermal configuration registers are RW/O hence, setting
those early prior to FSP-S helps coreboot to set the desired low
thermal threshold for the platform.

BUG=b:193774296
TEST=Dump thermal configuration registers PWRMBASE+0x150c etc. prior
to FSP-S shows that registers are now programmed based on
'pch_thermal_trip' and lock register BIT31 is set.

Change-Id: I0f972f47845c123f4f74fd75091c9703d54db796
Signed-off-by: Subrata Banik 
---
M src/soc/intel/alderlake/Kconfig
M src/soc/intel/alderlake/chip.c
2 files changed, 12 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/71/59271/1

diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig
index 58b9051..796f7bc 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -68,6 +68,8 @@
    select SOC_INTEL_COMMON_BLOCK_SMM
    select SOC_INTEL_COMMON_BLOCK_SMM_IO_TRAP
    select SOC_INTEL_COMMON_BLOCK_TCSS
+	select SOC_INTEL_COMMON_BLOCK_THERMAL
+	select SOC_INTEL_COMMON_BLOCK_THERMAL_BEHIND_PMC
    select SOC_INTEL_COMMON_BLOCK_USB4
    select SOC_INTEL_COMMON_BLOCK_USB4_PCIE
    select SOC_INTEL_COMMON_BLOCK_USB4_XHCI
diff --git a/src/soc/intel/alderlake/chip.c b/src/soc/intel/alderlake/chip.c
index ae28d18..4e1b47f 100644
--- a/src/soc/intel/alderlake/chip.c
+++ b/src/soc/intel/alderlake/chip.c
@@ -10,6 +10,7 @@
 #include <intelblocks/irq.h>
 #include <intelblocks/itss.h>
 #include <intelblocks/pcie_rp.h>
+#include <intelblocks/thermal.h>
 #include <intelblocks/xdci.h>
 #include <soc/intel/common/vbt.h>
 #include <soc/itss.h>
@@ -129,6 +130,15 @@

void soc_init_pre_device(void *chip_info)
 {
+	/*
+	 * Set low maximum temp threshold value used for dynamic thermal sensor
+	 * shutdown consideration.
+	 *
+	 * If Dynamic Thermal Shutdown is enabled then PMC logic shuts down the
+	 * thermal sensor when CPU is in a C-state and LTT >= DTS Temp.
+	 */
+	pch_thermal_configuration();
+
    /* Perform silicon specific init. */
    fsp_silicon_init();