From: Hrushiraj Gandhi <hrushirajg23@gmail.com>
To: Srinivas Kandagatla <srini@kernel.org>, Heiko Stuebner <heiko@sntech.de>
Cc: Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org,
Hrushiraj Gandhi <hrushirajg23@gmail.com>
Subject: [PATCH v2 1/2] dt-bindings: nvmem: rockchip-efuse: add optional vqps supply
Date: Wed, 29 Jul 2026 14:28:55 +0530 [thread overview]
Message-ID: <20260729085856.226001-2-hrushirajg23@gmail.com> (raw)
In-Reply-To: <20260729085856.226001-1-hrushirajg23@gmail.com>
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@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
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next prev parent reply other threads:[~2026-07-29 8:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-29 8:58 [PATCH v2 0/2] nvmem: rockchip-efuse: add write support with VQPS gating Hrushiraj Gandhi
2026-07-29 8:58 ` Hrushiraj Gandhi [this message]
2026-08-04 7:39 ` [PATCH v2 1/2] dt-bindings: nvmem: rockchip-efuse: add optional vqps supply Krzysztof Kozlowski
2026-07-29 8:58 ` [PATCH v2 2/2] nvmem: rockchip-efuse: add write support with optional VQPS supply gating Hrushiraj Gandhi
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