diff --git a/doc/device-tree-bindings/fsp/fsp2/apollolake/fsp-m.txt b/doc/device-tree-bindings/fsp/fsp2/apollolake/fsp-m.txt
index 5311938..666400e 100644
--- a/doc/device-tree-bindings/fsp/fsp2/apollolake/fsp-m.txt
+++ b/doc/device-tree-bindings/fsp/fsp2/apollolake/fsp-m.txt
@@ -240,6 +240,9 @@
 - fspm,enable-reset-system: Enable Reset System
 - fspm,enable-s3-heci2: Enable HECI2 in S3 resume path
 - fspm,variable-nvs-buffer-ptr:
+- fspm,start-timer-ticker-of-pfet-assert: PCIE SLOT Power Enable Assert Time - PFET
+- fspm,rt-en: Real Time Enabling
+- fspm,skip-pcie-power-sequence: Skip Pcie Power Sequence
 
 Example:
 
diff --git a/doc/device-tree-bindings/fsp/fsp2/apollolake/fsp-s.txt b/doc/device-tree-bindings/fsp/fsp2/apollolake/fsp-s.txt
index 973d253..731a310 100644
--- a/doc/device-tree-bindings/fsp/fsp2/apollolake/fsp-s.txt
+++ b/doc/device-tree-bindings/fsp/fsp2/apollolake/fsp-s.txt
@@ -463,6 +463,12 @@
 - fsps,port-usb20-i-usb-tx-emphasis-en: PerPort HS Transmitter Emphasis
 - fsps,port-usb20-per-port-rxi-set: PerPort HS Receiver Bias
 - fsps,port-usb20-hs-npre-drv-sel: Delay/skew's strength control for HS driver
+- fsps,os-selection: OS Selection
+  0: Windows
+  1: Android
+  3: Linux
+- fsps,dptf-enabled: DPTF
+- fsps,pwm-enabled: PWM Enabled
 
 Example: