[coreboot-gerrit] [S] Change in coreboot[main]: soc/intel/pantherlake: Enable Thunderbolt authentication

[Subrata Banik (Code Review)]

Subrata Banik has submitted this change. ( https://review.coreboot.org/c/coreboot/+/86420?usp=email )

Change subject: soc/intel/pantherlake: Enable Thunderbolt authentication
......................................................................

soc/intel/pantherlake: Enable Thunderbolt authentication

This commit enables Thunderbolt authentication for Panther Lake by
assigning `ioe_tcss_valid_tbt_auth` to the valid_tbt_auth field in
`soc_tcss_ops`.

For the SoC's integrated PD solution, AUX BIAS PAD programming is not
required and has been removed.

TEST=Verified all USB-C ports are functional.

With this patch, _SB.PCI0.TDM0._DSD exists in the SSDT, containing:
```
  Scope (_SB.PCI0.TDM0)
    {
        Name (_DSD, Package (0x04)  // _DSD: Device-Specific Data
        {
            ToUUID ("c44d002f-69f9-4e7d-a904-a7baabdf43f7"),
            Package (0x01)
            {
                Package (0x02)
                {
                    "IMR_VALID",
                    One
                }
            },

ToUUID ("6c501103-c189-4296-ba72-9bf5a26ebe5d"),
            Package (0x01)
            {
                Package (0x02)
                {
                    "WAKE_SUPPORTED",
                    One
                }
         }
    }
```

Change-Id: I28eac7cfd6511d8680cdae4f830afa73ad201a17
Signed-off-by: Subrata Banik 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86420
Tested-by: build bot (Jenkins) 
Reviewed-by: Jayvik Desai 
Reviewed-by: Dinesh Gehlot 
Reviewed-by: Kapil Porwal 
---
M src/soc/intel/pantherlake/tcss.c
1 file changed, 8 insertions(+), 2 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Kapil Porwal: Looks good to me, approved
  Jayvik Desai: Looks good to me, approved
  Dinesh Gehlot: Looks good to me, approved

diff --git a/src/soc/intel/pantherlake/tcss.c b/src/soc/intel/pantherlake/tcss.c
index 99cbdd2..c66a5c6 100644
--- a/src/soc/intel/pantherlake/tcss.c
+++ b/src/soc/intel/pantherlake/tcss.c
@@ -2,9 +2,15 @@

#include <intelblocks/tcss.h>
 #include <soc/soc_chip.h>
+#include <static.h>

const struct soc_tcss_ops tcss_ops = {
-/* TODO: Implement AUX BIAS PAD Programming if required */
    .configure_aux_bias_pads = NULL,
-	.valid_tbt_auth = NULL,
+	.valid_tbt_auth = ioe_tcss_valid_tbt_auth,
 };
+
+bool ioe_tcss_valid_tbt_auth(void)
+{
+	const config_t *config = config_of_soc();
+	return config->tbt_authentication;
+}