[PATCH v2 1/2] dt-bindings: nvmem: rockchip-efuse: add optional vqps supply

[Hrushiraj Gandhi]

Add an optional vqps-supply property for the eFuse programming supply
voltage (VQPS).

Per RK3399 TRM section 21.6.1, table 21-3, VQPS must be 0V during reads
and 1.8V to 1.98V during A_PGM mode writes. The presence of this supply
declares that the board hardware supports software-initiated eFuse
programming and provides the requisite programming supply.

Signed-off-by: Hrushiraj Gandhi <hrushirajg23 at gmail.com>
---
 Documentation/devicetree/bindings/nvmem/rockchip-efuse.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/nvmem/rockchip-efuse.yaml b/Documentation/devicetree/bindings/nvmem/rockchip-efuse.yaml
index b80fd8d1ae5b..25f209fd881e 100644
--- a/Documentation/devicetree/bindings/nvmem/rockchip-efuse.yaml
+++ b/Documentation/devicetree/bindings/nvmem/rockchip-efuse.yaml
@@ -27,6 +27,11 @@ properties:
       # Deprecated: old compatible value for rk3066a, rk3188 and rk3288
       - rockchip,rockchip-efuse
 
+  vqps-supply:
+    description:
+      Supply for the eFuse programming voltage (VQPS), required only
+      on boards where software-initiated OTP programming is intended.
+
   reg:
     description:
       Registers location and eFuse size.
-- 
2.47.3