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-rw-r--r--chip/g/init_chip.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/chip/g/init_chip.h b/chip/g/init_chip.h
index a5c08cd3d9..488bb3cc4c 100644
--- a/chip/g/init_chip.h
+++ b/chip/g/init_chip.h
@@ -24,6 +24,7 @@
* SCRATCH18 - Preserving USB_DCFG through deep sleep
* SCRATCH19 - Preserving USB data sequencing PID through deep sleep
* SCRATCH20 - Preserving EC-EFS context
+ * SCRATCH21 - Preserving TPM_BOARD_CFG register
*
* PWRDN_SCRATCH 28 - 31 - Reserved for boot rom
*/