[S] Change in coreboot[master]: [Chromium] soc/intel/alderlake: Hook up DisableDynamicTccoldHandshake...

[Selma Bensaid (Code Review)]

Selma Bensaid has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/68635 )

Change subject: [Chromium] soc/intel/alderlake: Hook up DisableDynamicTccoldHandshake to dev tree
......................................................................

[Chromium] soc/intel/alderlake: Hook up DisableDynamicTccoldHandshake to dev tree

This commit provides a dev tree setting for partners to enable/disable
TccoldHandshake for the sighting in doc:723158

BUG=b:221461379
BRANCH=firmware-brya-14505.B
TEST=compile ok and FSP UPD is config properly
Signed-off-by: Kane Chen

Change-Id: Ica13b98204acebef7f0b9a4411b4ac19f53cad6e
---
M src/soc/intel/alderlake/chip.h
M src/soc/intel/alderlake/romstage/fsp_params.c
2 files changed, 27 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/35/68635/1

diff --git a/src/soc/intel/alderlake/chip.h b/src/soc/intel/alderlake/chip.h
index 4cb6066..1847aca 100644
--- a/src/soc/intel/alderlake/chip.h
+++ b/src/soc/intel/alderlake/chip.h
@@ -646,6 +646,13 @@
     * Default is set to 0 and set to 1 to skip the MBP HOB.
     */
    bool skip_mbp_hob;
+
+	/*
+	 * Enable or Disable Tccold Handshake
+	 * Default is set to 0.
+	 * Set this to 1 in order to disable Tccold Handshake
+	 */
+	bool disable_dynamic_tccold_handshake;
 };

typedef struct soc_intel_alderlake_config config_t;
diff --git a/src/soc/intel/alderlake/romstage/fsp_params.c b/src/soc/intel/alderlake/romstage/fsp_params.c
index c0bdb0d..531b924 100644
--- a/src/soc/intel/alderlake/romstage/fsp_params.c
+++ b/src/soc/intel/alderlake/romstage/fsp_params.c
@@ -266,6 +266,9 @@
    /* TCSS DMA */
    m_cfg->TcssDma0En = is_devfn_enabled(SA_DEVFN_TCSS_DMA0);
    m_cfg->TcssDma1En = is_devfn_enabled(SA_DEVFN_TCSS_DMA1);
+
+	m_cfg->DisableDynamicTccoldHandshake =
+			config->disable_dynamic_tccold_handshake;
 }

static void fill_fspm_usb4_params(FSP_M_CONFIG *m_cfg,