[PATCH v2 0/5] nvmem: add Samsung Exynos OTP support
From: Tudor Ambarus <tudor.ambarus@linaro.org>
Date: 2025-11-12 08:29:15
Also in:
linux-devicetree, linux-samsung-soc, lkml
Dependency ========== Typical dependency of the DT patch depending on the bindings patch, thus the bindings patch could go via the Samsung SoC tree with Srinivas's ack. Description =========== Add initial support for the Samsung Exynos OTP controller. Read the product and chip IDs from the OTP controller registers space and register the SoC info to the SoC interface. The driver can be extended to empower the controller become nvmem provider. This is not in the scope of this patch because it seems the OTP memory space is not yet used by any consumer, even downstream. Testing ======= root@google-gs:~# cat /sys/devices/soc0/family Samsung Exynos root@google-gs:~# cat /sys/devices/soc0/machine Oriole root@google-gs:~# cat /sys/devices/soc0/revision 11 root@google-gs:~# cat /sys/devices/soc0/soc_id GS101 Cheers, ta Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org> --- Changes in v2: - bindings: - drop dependency on nvmem-deprecated-cells.yaml - drop clock-names, otp label, child nodes - add interrupts prop, make it required and add it in the example - driver: - no longer a nvmem provider, register just to the soc interface - update comment about the module name in Kconfig - dts: add interrupts, drop child nodes, drop otp label - Link to v1: https://lore.kernel.org/r/20251031-gs101-otp-v1-0-2a54f6c4e7b6@linaro.org (local) --- Tudor Ambarus (5): dt-bindings: nvmem: add google,gs101-otp nvmem: add Samsung Exynos OTP support arm64: dts: exynos: gs101: add OTP node arm64: defconfig: enable Samsung Exynos OTP controller MAINTAINERS: add entry for the Samsung Exynos OTP controller driver .../bindings/nvmem/google,gs101-otp.yaml | 56 ++++++++ MAINTAINERS | 8 ++ arch/arm64/boot/dts/exynos/google/gs101.dtsi | 7 + arch/arm64/configs/defconfig | 1 + drivers/nvmem/Kconfig | 10 ++ drivers/nvmem/Makefile | 2 + drivers/nvmem/exynos-otp.c | 160 +++++++++++++++++++++ 7 files changed, 244 insertions(+) --- base-commit: 4b67e4c65c1e0740ac12bd0d790eb5a9d0091aaa change-id: 20251031-gs101-otp-2f38e8b4b793 Best regards, -- Tudor Ambarus [off-list ref]