linux-kernel - [PATCH v2 4/5] arm64: defconfig: enable Samsung Exynos OTP controller

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Message-Id: <20251112-gs101-otp-v2-4-bff2eb020c95@linaro.org>
Date: Wed, 12 Nov 2025 08:29:08 +0000
From: Tudor Ambarus <tudor.ambarus@...aro.org>
To: Srinivas Kandagatla <srini@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Krzysztof Kozlowski <krzk@...nel.org>, 
 Alim Akhtar <alim.akhtar@...sung.com>, 
 Peter Griffin <peter.griffin@...aro.org>, 
 André Draszik <andre.draszik@...aro.org>
Cc: semen.protsenko@...aro.org, willmcvicker@...gle.com, 
 kernel-team@...roid.com, linux-kernel@...r.kernel.org, 
 linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, 
 Tudor Ambarus <tudor.ambarus@...aro.org>
Subject: [PATCH v2 4/5] arm64: defconfig: enable Samsung Exynos OTP
 controller

Enable the exynos-otp nvmem driver. The driver reads the product and
chip IDs from the OTP register space and register the SoC info to the
SoC interface.

The driver can be extended to empower the controller become nvmem
provider. The fuse block stores various system information (TMU, ASV,
etc.) which can be accessed by client drivers.

Signed-off-by: Tudor Ambarus <tudor.ambarus@...aro.org>
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 646097e94efe7f1a18fb59d5b6dfc6268be91383..6433e3c0f88b892ce6f2ee190f866a6ab4889771 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -1682,6 +1682,7 @@ CONFIG_ARM_CORESIGHT_PMU_ARCH_SYSTEM_PMU=m
 CONFIG_NVIDIA_CORESIGHT_PMU_ARCH_SYSTEM_PMU=m
 CONFIG_MESON_DDR_PMU=m
 CONFIG_NVMEM_LAYOUT_SL28_VPD=m
+CONFIG_NVMEM_EXYNOS_OTP=m
 CONFIG_NVMEM_IMX_OCOTP=y
 CONFIG_NVMEM_IMX_OCOTP_ELE=m
 CONFIG_NVMEM_IMX_OCOTP_SCU=y

-- 
2.51.2.1041.gc1ab5b90ca-goog