Change in coreboot[master]: drivers/i2c/tpm: Add workaround for Ti50

[Eric Lai (Code Review)]

Eric Lai has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/63011 )

Change subject: drivers/i2c/tpm: Add workaround for Ti50
......................................................................

drivers/i2c/tpm: Add workaround for Ti50

Ti50 FW under 0.15 is not support board cfg. And ODM
stocks are 0.12 pre-flashed. Add workaroud for the old
Ti50 chip.

BUG=b:224650720
TEST=no I2C errors in coreboot.
[ERROR]  cr50_i2c_read: Address write failed
[INFO ]  .I2C stop bit not received

Signed-off-by: Eric Lai 
Change-Id: Ieec7842ca66b4c690df04a400cebcf45138c745d
---
M src/drivers/i2c/tpm/Kconfig
M src/drivers/i2c/tpm/cr50.c
M src/mainboard/google/brya/Kconfig
3 files changed, 11 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/11/63011/1

diff --git a/src/drivers/i2c/tpm/Kconfig b/src/drivers/i2c/tpm/Kconfig
index dcf9060..61e9c80 100644
--- a/src/drivers/i2c/tpm/Kconfig
+++ b/src/drivers/i2c/tpm/Kconfig
@@ -24,6 +24,12 @@
    help
      Board has a generic I2C TPM support

+config MAINBOARD_HAS_I2C_TI50
+	bool
+	default n
+	help
+	  Board has a Ti50 I2C TPM support
+
 config DRIVER_TIS_DEFAULT
    bool
    depends on I2C_TPM
diff --git a/src/drivers/i2c/tpm/cr50.c b/src/drivers/i2c/tpm/cr50.c
index ce2278b..726dfa7 100644
--- a/src/drivers/i2c/tpm/cr50.c
+++ b/src/drivers/i2c/tpm/cr50.c
@@ -500,7 +500,10 @@
    printk(BIOS_DEBUG, "cr50 TPM 2.0 (i2c %u:0x%02x id 0x%x)\n",
           bus, dev_addr, did_vid >> 16);

-	if (tpm_first_access_this_boot()) {
+	/* Ti50 FW version under 0.15 doesn't support board cfg
+	   TODO: remove this flag after all stocks Ti50 uprev to 0.15 or above
+	 */
+	if (!CONFIG(MAINBOARD_HAS_I2C_TI50) && tpm_first_access_this_boot()) {
    	/* This is called for the side-effect of printing the version string. */
    	cr50_get_firmware_version(&ver);
    	cr50_set_board_cfg();
diff --git a/src/mainboard/google/brya/Kconfig b/src/mainboard/google/brya/Kconfig
index 199db11..0139d54 100644
--- a/src/mainboard/google/brya/Kconfig
+++ b/src/mainboard/google/brya/Kconfig
@@ -60,6 +60,7 @@
    def_bool n
    select BOARD_GOOGLE_BRYA_COMMON
    select CHROMEOS_DRAM_PART_NUMBER_IN_CBI if CHROMEOS
+	select MAINBOARD_HAS_I2C_TI50
    select MEMORY_SOLDERDOWN
    select SOC_INTEL_ALDERLAKE_PCH_N
    select SOC_INTEL_CSE_LITE_COMPRESS_ME_RW