diff --git a/Documentation/devicetree/bindings/arm/actions.yaml b/Documentation/devicetree/bindings/arm/actions.yaml
index 14023f0a8552..9d12984691e4 100644
--- a/Documentation/devicetree/bindings/arm/actions.yaml
+++ b/Documentation/devicetree/bindings/arm/actions.yaml
@@ -38,3 +38,5 @@ properties:
           - enum:
               - ucrobotics,bubblegum-96 # uCRobotics Bubblegum-96
           - const: actions,s900
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/arm/altera.yaml b/Documentation/devicetree/bindings/arm/altera.yaml
index 0bc5020b7539..c15c92fdf2ed 100644
--- a/Documentation/devicetree/bindings/arm/altera.yaml
+++ b/Documentation/devicetree/bindings/arm/altera.yaml
@@ -19,4 +19,7 @@ properties:
           - altr,socfpga-arria5
           - altr,socfpga-arria10
       - const: altr,socfpga
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/amazon,al.yaml b/Documentation/devicetree/bindings/arm/amazon,al.yaml
index a3a4d710bd02..0f03135d91b6 100644
--- a/Documentation/devicetree/bindings/arm/amazon,al.yaml
+++ b/Documentation/devicetree/bindings/arm/amazon,al.yaml
@@ -30,4 +30,6 @@ properties:
               - amazon,al-alpine-v3-evp
           - const: amazon,al-alpine-v3
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/amlogic.yaml b/Documentation/devicetree/bindings/arm/amlogic.yaml
index 5eba9f48823e..51dea8844569 100644
--- a/Documentation/devicetree/bindings/arm/amlogic.yaml
+++ b/Documentation/devicetree/bindings/arm/amlogic.yaml
@@ -171,4 +171,7 @@ properties:
           - enum:
               - amlogic,ad401
           - const: amlogic,a1
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/arm,integrator.yaml b/Documentation/devicetree/bindings/arm/arm,integrator.yaml
index f0daf990e077..528eee64290a 100644
--- a/Documentation/devicetree/bindings/arm/arm,integrator.yaml
+++ b/Documentation/devicetree/bindings/arm/arm,integrator.yaml
@@ -83,4 +83,6 @@ required:
   - compatible
   - core-module@10000000
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/arm,realview.yaml b/Documentation/devicetree/bindings/arm/arm,realview.yaml
index 1d0b4e2bc7d2..4f9b21f49e84 100644
--- a/Documentation/devicetree/bindings/arm/arm,realview.yaml
+++ b/Documentation/devicetree/bindings/arm/arm,realview.yaml
@@ -120,4 +120,6 @@ required:
   - compatible
   - soc
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/arm,versatile.yaml b/Documentation/devicetree/bindings/arm/arm,versatile.yaml
index 06efd2a075c9..34b437c72751 100644
--- a/Documentation/devicetree/bindings/arm/arm,versatile.yaml
+++ b/Documentation/devicetree/bindings/arm/arm,versatile.yaml
@@ -68,4 +68,6 @@ required:
   - compatible
   - core-module@10000000
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml b/Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
index 26829a803fda..55ef656d1192 100644
--- a/Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
+++ b/Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
@@ -216,4 +216,6 @@ allOf:
       required:
         - arm,hbi
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/atmel-at91.yaml b/Documentation/devicetree/bindings/arm/atmel-at91.yaml
index 31b0c54fa2cf..df95d1068030 100644
--- a/Documentation/devicetree/bindings/arm/atmel-at91.yaml
+++ b/Documentation/devicetree/bindings/arm/atmel-at91.yaml
@@ -183,4 +183,6 @@ properties:
           - const: atmel,samv71
           - const: atmel,samv7
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/axxia.yaml b/Documentation/devicetree/bindings/arm/axxia.yaml
index 3ea5f2fdcd96..e0d2bb71cf50 100644
--- a/Documentation/devicetree/bindings/arm/axxia.yaml
+++ b/Documentation/devicetree/bindings/arm/axxia.yaml
@@ -18,4 +18,6 @@ properties:
       - const: lsi,axm5516-amarillo
       - const: lsi,axm5516
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml b/Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml
index dd52e29b0642..812ae8cc5959 100644
--- a/Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml
@@ -51,4 +51,6 @@ properties:
               - raspberrypi,3-compute-module-lite
           - const: brcm,bcm2837
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm11351.yaml b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm11351.yaml
index 497600a2ffb9..c60324357435 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm11351.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm11351.yaml
@@ -18,4 +18,6 @@ properties:
           - brcm,bcm28155-ap
       - const: brcm,bcm11351
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm21664.yaml b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm21664.yaml
index e0ee931723dc..b3020757380f 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm21664.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm21664.yaml
@@ -18,4 +18,6 @@ properties:
           - brcm,bcm21664-garnet
       - const: brcm,bcm21664
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm23550.yaml b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm23550.yaml
index 40d12ea56e54..37f3a6fcde76 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm23550.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm23550.yaml
@@ -18,4 +18,6 @@ properties:
           - brcm,bcm23550-sparrow
       - const: brcm,bcm23550
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm4708.yaml b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm4708.yaml
index d48313c7ae45..86a1fe885387 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm4708.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm4708.yaml
@@ -85,4 +85,7 @@ properties:
               - brcm,bcm953012k
           - const: brcm,brcm53012
           - const: brcm,bcm4708
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,cygnus.yaml b/Documentation/devicetree/bindings/arm/bcm/brcm,cygnus.yaml
index 9ba7b16e1fc4..432ccf990f9e 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,cygnus.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,cygnus.yaml
@@ -26,4 +26,6 @@ properties:
           - brcm,bcm58305
       - const: brcm,cygnus
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,hr2.yaml b/Documentation/devicetree/bindings/arm/bcm/brcm,hr2.yaml
index ae614b6722c2..294948399f82 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,hr2.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,hr2.yaml
@@ -25,4 +25,6 @@ properties:
       - const: brcm,bcm53342
       - const: brcm,hr2
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,ns2.yaml b/Documentation/devicetree/bindings/arm/bcm/brcm,ns2.yaml
index 0749adf94c28..c4847abbecd8 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,ns2.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,ns2.yaml
@@ -20,4 +20,6 @@ properties:
           - brcm,ns2-xmc
       - const: brcm,ns2
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,nsp.yaml b/Documentation/devicetree/bindings/arm/bcm/brcm,nsp.yaml
index 8c2cacb2bb4f..476bc23a7f75 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,nsp.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,nsp.yaml
@@ -33,4 +33,6 @@ properties:
           - brcm,bcm88312
       - const: brcm,nsp
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,stingray.yaml b/Documentation/devicetree/bindings/arm/bcm/brcm,stingray.yaml
index c13cb96545a2..c638e04ebae0 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,stingray.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,stingray.yaml
@@ -21,4 +21,6 @@ properties:
           - brcm,bcm958802a802x
       - const: brcm,stingray
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,vulcan-soc.yaml b/Documentation/devicetree/bindings/arm/bcm/brcm,vulcan-soc.yaml
index ccdf9f99cb2b..4eba182abd53 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,vulcan-soc.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,vulcan-soc.yaml
@@ -19,4 +19,6 @@ properties:
           - cavium,thunderx2-cn9900
       - const: brcm,vulcan-soc
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/bitmain.yaml b/Documentation/devicetree/bindings/arm/bitmain.yaml
index 5880083ab8d0..90ba02be48ce 100644
--- a/Documentation/devicetree/bindings/arm/bitmain.yaml
+++ b/Documentation/devicetree/bindings/arm/bitmain.yaml
@@ -17,4 +17,7 @@ properties:
       - enum:
           - bitmain,sophon-edge
       - const: bitmain,bm1880
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/calxeda.yaml b/Documentation/devicetree/bindings/arm/calxeda.yaml
index aa5571d23c39..46f78addebb0 100644
--- a/Documentation/devicetree/bindings/arm/calxeda.yaml
+++ b/Documentation/devicetree/bindings/arm/calxeda.yaml
@@ -20,3 +20,5 @@ properties:
       - enum:
           - calxeda,highbank
           - calxeda,ecx-2000
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/arm/digicolor.yaml b/Documentation/devicetree/bindings/arm/digicolor.yaml
index 849e20518339..a35de3c9e284 100644
--- a/Documentation/devicetree/bindings/arm/digicolor.yaml
+++ b/Documentation/devicetree/bindings/arm/digicolor.yaml
@@ -15,4 +15,6 @@ properties:
   compatible:
     const: cnxt,cx92755
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
index 6da9d734cdb7..43adf7241d79 100644
--- a/Documentation/devicetree/bindings/arm/fsl.yaml
+++ b/Documentation/devicetree/bindings/arm/fsl.yaml
@@ -526,4 +526,6 @@ properties:
               - fsl,s32v234-evb           # S32V234-EVB2 Customer Evaluation Board
           - const: fsl,s32v234
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.yaml b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.yaml
index 43b8ce2227aa..b38458022946 100644
--- a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.yaml
+++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.yaml
@@ -64,4 +64,7 @@ properties:
         items:
           - const: H836ASDJ
           - const: hisilicon,sd5203
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/intel,keembay.yaml b/Documentation/devicetree/bindings/arm/intel,keembay.yaml
index 06a7b05f435f..69cd30872928 100644
--- a/Documentation/devicetree/bindings/arm/intel,keembay.yaml
+++ b/Documentation/devicetree/bindings/arm/intel,keembay.yaml
@@ -16,4 +16,7 @@ properties:
       - enum:
           - intel,keembay-evm
       - const: intel,keembay
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/intel-ixp4xx.yaml b/Documentation/devicetree/bindings/arm/intel-ixp4xx.yaml
index f18302efb90e..d72e92bdf7c1 100644
--- a/Documentation/devicetree/bindings/arm/intel-ixp4xx.yaml
+++ b/Documentation/devicetree/bindings/arm/intel-ixp4xx.yaml
@@ -22,3 +22,5 @@ properties:
           - enum:
               - gateworks,gw2358
           - const: intel,ixp43x
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/arm/keystone/ti,k3-sci-common.yaml b/Documentation/devicetree/bindings/arm/keystone/ti,k3-sci-common.yaml
index 7597bc93a55f..5cbcacaeb441 100644
--- a/Documentation/devicetree/bindings/arm/keystone/ti,k3-sci-common.yaml
+++ b/Documentation/devicetree/bindings/arm/keystone/ti,k3-sci-common.yaml
@@ -42,3 +42,5 @@ properties:
       - description: TI-SCI processor id for the remote processor device
       - description: TI-SCI host id to which processor control ownership
                      should be transferred to
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/arm/marvell/armada-7k-8k.yaml b/Documentation/devicetree/bindings/arm/marvell/armada-7k-8k.yaml
index a9828c50c0fb..e9bf3054529f 100644
--- a/Documentation/devicetree/bindings/arm/marvell/armada-7k-8k.yaml
+++ b/Documentation/devicetree/bindings/arm/marvell/armada-7k-8k.yaml
@@ -59,3 +59,5 @@ properties:
           - const: marvell,cn9130
           - const: marvell,armada-ap807-quad
           - const: marvell,armada-ap807
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/arm/mediatek.yaml b/Documentation/devicetree/bindings/arm/mediatek.yaml
index 30908963ae26..f736e8c859fa 100644
--- a/Documentation/devicetree/bindings/arm/mediatek.yaml
+++ b/Documentation/devicetree/bindings/arm/mediatek.yaml
@@ -119,4 +119,7 @@ properties:
           - const: google,krane-sku176
           - const: google,krane
           - const: mediatek,mt8183
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/microchip,sparx5.yaml b/Documentation/devicetree/bindings/arm/microchip,sparx5.yaml
index ecf6fa12e6ad..6193388c6318 100644
--- a/Documentation/devicetree/bindings/arm/microchip,sparx5.yaml
+++ b/Documentation/devicetree/bindings/arm/microchip,sparx5.yaml
@@ -62,4 +62,6 @@ required:
   - compatible
   - axi@600000000
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/moxart.yaml b/Documentation/devicetree/bindings/arm/moxart.yaml
index c068df59fad2..670d24ce8ec5 100644
--- a/Documentation/devicetree/bindings/arm/moxart.yaml
+++ b/Documentation/devicetree/bindings/arm/moxart.yaml
@@ -16,4 +16,5 @@ properties:
       - const: moxa,moxart-uc-7112-lx
       - const: moxa,moxart
 
+additionalProperties: true
 ...
diff --git a/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml b/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
index 3235ec9e9bad..d58116136154 100644
--- a/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
+++ b/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
@@ -35,4 +35,7 @@ properties:
           - enum:
               - dell,wyse-ariel
           - const: marvell,mmp3
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/mstar/mstar.yaml b/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
index c2f980b00b06..7c787405bb2f 100644
--- a/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
+++ b/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
@@ -31,3 +31,5 @@ properties:
           - enum:
               - 70mai,midrived08 # 70mai midrive d08
           - const: mstar,mercury5
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/arm/nxp/lpc32xx.yaml b/Documentation/devicetree/bindings/arm/nxp/lpc32xx.yaml
index f7f024910e71..214c97bc3063 100644
--- a/Documentation/devicetree/bindings/arm/nxp/lpc32xx.yaml
+++ b/Documentation/devicetree/bindings/arm/nxp/lpc32xx.yaml
@@ -21,4 +21,6 @@ properties:
               - ea,ea3250
               - phytec,phy3250
           - const: nxp,lpc3250
+
+additionalProperties: true
 ...
diff --git a/Documentation/devicetree/bindings/arm/qcom.yaml b/Documentation/devicetree/bindings/arm/qcom.yaml
index ae6284be9fef..8604f1f9266b 100644
--- a/Documentation/devicetree/bindings/arm/qcom.yaml
+++ b/Documentation/devicetree/bindings/arm/qcom.yaml
@@ -167,4 +167,6 @@ properties:
               - qcom,ipq6018-cp01-c1
           - const: qcom,ipq6018
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/rda.yaml b/Documentation/devicetree/bindings/arm/rda.yaml
index 9672aa0c760d..a5c0444aa2b4 100644
--- a/Documentation/devicetree/bindings/arm/rda.yaml
+++ b/Documentation/devicetree/bindings/arm/rda.yaml
@@ -19,4 +19,6 @@ properties:
           - xunlong,orangepi-i96        # Orange Pi i96
       - const: rda,8810pl
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/realtek.yaml b/Documentation/devicetree/bindings/arm/realtek.yaml
index 845f9c76d6f7..9fb0297fe1ce 100644
--- a/Documentation/devicetree/bindings/arm/realtek.yaml
+++ b/Documentation/devicetree/bindings/arm/realtek.yaml
@@ -54,4 +54,7 @@ properties:
           - enum:
               - realtek,mjolnir # Realtek Mjolnir EVB
           - const: realtek,rtd1619
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/renesas.yaml b/Documentation/devicetree/bindings/arm/renesas.yaml
index 0d4dabb4a164..dfb31ad0061e 100644
--- a/Documentation/devicetree/bindings/arm/renesas.yaml
+++ b/Documentation/devicetree/bindings/arm/renesas.yaml
@@ -287,4 +287,6 @@ properties:
               - renesas,rzn1d400-db # RZN1D-DB (RZ/N1D Demo Board for the RZ/N1D 400 pins package)
           - const: renesas,r9a06g032
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/rockchip.yaml b/Documentation/devicetree/bindings/arm/rockchip.yaml
index db2e35796795..8d5933a1cb16 100644
--- a/Documentation/devicetree/bindings/arm/rockchip.yaml
+++ b/Documentation/devicetree/bindings/arm/rockchip.yaml
@@ -555,4 +555,7 @@ properties:
         items:
           - const: tronsmart,orion-r68-meta
           - const: rockchip,rk3368
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml b/Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml
index eb92f9eefaba..272508010b02 100644
--- a/Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml
+++ b/Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml
@@ -180,3 +180,5 @@ properties:
 
 required:
   - compatible
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/arm/sirf.yaml b/Documentation/devicetree/bindings/arm/sirf.yaml
index 0b597032c923..b25eb35d1b66 100644
--- a/Documentation/devicetree/bindings/arm/sirf.yaml
+++ b/Documentation/devicetree/bindings/arm/sirf.yaml
@@ -24,4 +24,7 @@ properties:
       - items:
           - const: sirf,prima2-cb
           - const: sirf,prima2
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/socionext/milbeaut.yaml b/Documentation/devicetree/bindings/arm/socionext/milbeaut.yaml
index 2bd519d2e855..aa1d4afbc510 100644
--- a/Documentation/devicetree/bindings/arm/socionext/milbeaut.yaml
+++ b/Documentation/devicetree/bindings/arm/socionext/milbeaut.yaml
@@ -19,4 +19,7 @@ properties:
           - enum:
               - socionext,milbeaut-m10v-evb
           - const: socionext,sc2000a
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/socionext/uniphier.yaml b/Documentation/devicetree/bindings/arm/socionext/uniphier.yaml
index 6caf1f9be390..8c0e91658474 100644
--- a/Documentation/devicetree/bindings/arm/socionext/uniphier.yaml
+++ b/Documentation/devicetree/bindings/arm/socionext/uniphier.yaml
@@ -60,3 +60,5 @@ properties:
           - enum:
               - socionext,uniphier-pxs3-ref
           - const: socionext,uniphier-pxs3
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/arm/spear.yaml b/Documentation/devicetree/bindings/arm/spear.yaml
index f6ec731c9531..605ad3f882ef 100644
--- a/Documentation/devicetree/bindings/arm/spear.yaml
+++ b/Documentation/devicetree/bindings/arm/spear.yaml
@@ -22,4 +22,7 @@ properties:
           - st,spear320
           - st,spear1310
           - st,spear1340
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/sprd/sprd.yaml b/Documentation/devicetree/bindings/arm/sprd/sprd.yaml
index 0258a96bfbde..7b6ae3070396 100644
--- a/Documentation/devicetree/bindings/arm/sprd/sprd.yaml
+++ b/Documentation/devicetree/bindings/arm/sprd/sprd.yaml
@@ -30,4 +30,6 @@ properties:
               - sprd,sp9863a-1h10
           - const: sprd,sc9863a
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/sti.yaml b/Documentation/devicetree/bindings/arm/sti.yaml
index 47f9b8eebaa0..b1f28d16d3fb 100644
--- a/Documentation/devicetree/bindings/arm/sti.yaml
+++ b/Documentation/devicetree/bindings/arm/sti.yaml
@@ -20,4 +20,7 @@ properties:
           - st,stih407
           - st,stih410
           - st,stih418
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/stm32/stm32.yaml b/Documentation/devicetree/bindings/arm/stm32/stm32.yaml
index 696a0101ebcc..6c3e7a9587a2 100644
--- a/Documentation/devicetree/bindings/arm/stm32/stm32.yaml
+++ b/Documentation/devicetree/bindings/arm/stm32/stm32.yaml
@@ -52,4 +52,7 @@ properties:
           - const: st,stm32mp157c-ev1
           - const: st,stm32mp157c-ed1
           - const: st,stm32mp157
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/sunxi.yaml b/Documentation/devicetree/bindings/arm/sunxi.yaml
index efc9118233b4..e1f21a051ded 100644
--- a/Documentation/devicetree/bindings/arm/sunxi.yaml
+++ b/Documentation/devicetree/bindings/arm/sunxi.yaml
@@ -883,3 +883,5 @@ properties:
         items:
           - const: xunlong,orangepi-zero-plus2-h3
           - const: allwinner,sun8i-h3
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/arm/tegra.yaml b/Documentation/devicetree/bindings/arm/tegra.yaml
index b4d53290c5f0..0340d3f956a1 100644
--- a/Documentation/devicetree/bindings/arm/tegra.yaml
+++ b/Documentation/devicetree/bindings/arm/tegra.yaml
@@ -121,3 +121,5 @@ properties:
         items:
           - const: nvidia,p3509-0000+p3668-0000
           - const: nvidia,tegra194
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/arm/ti/nspire.yaml b/Documentation/devicetree/bindings/arm/ti/nspire.yaml
index e372b43da62f..cc2023bb7fa6 100644
--- a/Documentation/devicetree/bindings/arm/ti/nspire.yaml
+++ b/Documentation/devicetree/bindings/arm/ti/nspire.yaml
@@ -21,4 +21,7 @@ properties:
           - ti,nspire-tp
           # Clickpad models
           - ti,nspire-clp
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/ti/ti,davinci.yaml b/Documentation/devicetree/bindings/arm/ti/ti,davinci.yaml
index a8765ba29476..c022d325fc08 100644
--- a/Documentation/devicetree/bindings/arm/ti/ti,davinci.yaml
+++ b/Documentation/devicetree/bindings/arm/ti/ti,davinci.yaml
@@ -23,4 +23,7 @@ properties:
           - enbw,cmc        # EnBW AM1808 based CMC board
           - lego,ev3        # LEGO MINDSTORMS EV3 (AM1808 based)
       - const: ti,da850
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/ux500.yaml b/Documentation/devicetree/bindings/arm/ux500.yaml
index accaee906050..5db7cfba81a4 100644
--- a/Documentation/devicetree/bindings/arm/ux500.yaml
+++ b/Documentation/devicetree/bindings/arm/ux500.yaml
@@ -34,3 +34,5 @@ properties:
         items:
           - const: samsung,golden
           - const: st-ericsson,u8500
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/arm/vt8500.yaml b/Documentation/devicetree/bindings/arm/vt8500.yaml
index 7b25b6fa34e9..29ff399551ca 100644
--- a/Documentation/devicetree/bindings/arm/vt8500.yaml
+++ b/Documentation/devicetree/bindings/arm/vt8500.yaml
@@ -21,3 +21,6 @@ properties:
           - wm,wm8650
           - wm,wm8750
           - wm,wm8850
+          
+additionalProperties: true
+
diff --git a/Documentation/devicetree/bindings/arm/xilinx.yaml b/Documentation/devicetree/bindings/arm/xilinx.yaml
index c73b1f5c7f49..e0c6787f6e94 100644
--- a/Documentation/devicetree/bindings/arm/xilinx.yaml
+++ b/Documentation/devicetree/bindings/arm/xilinx.yaml
@@ -111,4 +111,6 @@ properties:
           - const: xlnx,zynqmp-zcu111
           - const: xlnx,zynqmp
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/arm/zte.yaml b/Documentation/devicetree/bindings/arm/zte.yaml
index 2d3fefdccdff..672f8129cd31 100644
--- a/Documentation/devicetree/bindings/arm/zte.yaml
+++ b/Documentation/devicetree/bindings/arm/zte.yaml
@@ -23,4 +23,6 @@ properties:
               - zte,zx296718-evb
           - const: zte,zx296718
 
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/mips/ingenic/devices.yaml b/Documentation/devicetree/bindings/mips/ingenic/devices.yaml
index 83c86cbe4716..bd5fbc973cca 100644
--- a/Documentation/devicetree/bindings/mips/ingenic/devices.yaml
+++ b/Documentation/devicetree/bindings/mips/ingenic/devices.yaml
@@ -47,4 +47,7 @@ properties:
         items:
           - const: yna,cu1830-neo
           - const: ingenic,x1830
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/mips/loongson/devices.yaml b/Documentation/devicetree/bindings/mips/loongson/devices.yaml
index d25e80aa8b2a..9fee6708e6f5 100644
--- a/Documentation/devicetree/bindings/mips/loongson/devices.yaml
+++ b/Documentation/devicetree/bindings/mips/loongson/devices.yaml
@@ -36,4 +36,7 @@ properties:
       - description: Virtual Loongson64 Quad Core + VirtIO
         items:
           - const: loongson,loongson64v-4core-virtio
+
+additionalProperties: true
+
 ...
diff --git a/Documentation/devicetree/bindings/riscv/sifive.yaml b/Documentation/devicetree/bindings/riscv/sifive.yaml
index 3ab532713dc1..3a8647d1da4c 100644
--- a/Documentation/devicetree/bindings/riscv/sifive.yaml
+++ b/Documentation/devicetree/bindings/riscv/sifive.yaml
@@ -22,4 +22,7 @@ properties:
           - sifive,hifive-unleashed-a00
       - const: sifive,fu540-c000
       - const: sifive,fu540
+
+additionalProperties: true
+
 ...
