[coreboot-gerrit] [S] Change in coreboot[master]: soc/intel/alderlake: Hook up DisableDynamicTccoldHandshake to dev tree

[Nick Vaccaro (Code Review)]

Nick Vaccaro has submitted this change. ( https://review.coreboot.org/c/coreboot/+/68635 )

(

7 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the submitted one.
 )Change subject: soc/intel/alderlake: Hook up DisableDynamicTccoldHandshake to dev tree
......................................................................

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

Change-Id: Ica13b98204acebef7f0b9a4411b4ac19f53cad6e
Signed-off-by: Kane Chen 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68635
Reviewed-by: Jérémy Compostella 
Reviewed-by: Nick Vaccaro 
Reviewed-by: Eric Lai 
Tested-by: build bot (Jenkins) 
---
M src/soc/intel/alderlake/chip.h
M src/soc/intel/alderlake/romstage/fsp_params.c
2 files changed, 34 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Nick Vaccaro: Looks good to me, approved
  Eric Lai: Looks good to me, approved
  Jérémy Compostella: Looks good to me, but someone else must approve

diff --git a/src/soc/intel/alderlake/chip.h b/src/soc/intel/alderlake/chip.h
index 8e76e55..33549bc 100644
--- a/src/soc/intel/alderlake/chip.h
+++ b/src/soc/intel/alderlake/chip.h
@@ -680,6 +680,13 @@
     * IGD panel configuration
     */
    struct i915_gpu_panel_config panel_cfg;
+
+	/*
+	 * 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 2e8a73c..df94e48 100644
--- a/src/soc/intel/alderlake/romstage/fsp_params.c
+++ b/src/soc/intel/alderlake/romstage/fsp_params.c
@@ -270,6 +270,11 @@
    /* TCSS DMA */
    m_cfg->TcssDma0En = is_devfn_enabled(SA_DEVFN_TCSS_DMA0);
    m_cfg->TcssDma1En = is_devfn_enabled(SA_DEVFN_TCSS_DMA1);
+
+#if CONFIG(SOC_INTEL_RAPTORLAKE)
+	m_cfg->DisableDynamicTccoldHandshake =
+			config->disable_dynamic_tccold_handshake;
+#endif
 }

static void fill_fspm_usb4_params(FSP_M_CONFIG *m_cfg,