[PATCH 0/3] nvmem: s32g-ocotp: Add driver for S32G OCOTP

[PATCH 0/3] nvmem: s32g-ocotp: Add driver for S32G OCOTP

[Dan Carpenter]

This driver provides a way to access the On Chip One-Time Programmable
Controller (OCOTP) on the s32g chipset.  There are three versions of this
chip but they're compatible.

Ciprian Costea (2):
  dt-bindings: nvmem: Add the nxp,s32g-ocotp yaml file
  nvmem: s32g-ocotp: Add driver for S32G OCOTP

Dan Carpenter (1):
  arm64: dts: s32g: Add device tree information for the OCOTP driver

 .../bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml  |  57 ++++++
 arch/arm64/boot/dts/freescale/s32g2.dtsi      |   7 +
 arch/arm64/boot/dts/freescale/s32g3.dtsi      |   7 +
 drivers/nvmem/Kconfig                         |  10 +
 drivers/nvmem/Makefile                        |   2 +
 drivers/nvmem/s32g-ocotp-nvmem.c              | 171 ++++++++++++++++++
 6 files changed, 254 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml
 create mode 100644 drivers/nvmem/s32g-ocotp-nvmem.c

-- 
2.47.2

[PATCH 3/3] arm64: dts: s32g: Add device tree information for the OCOTP driver

[Dan Carpenter]

Add the device tree information for the S32G On Chip One-Time
Programmable Controller (OCOTP) chip.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
 arch/arm64/boot/dts/freescale/s32g2.dtsi | 7 +++++++
 arch/arm64/boot/dts/freescale/s32g3.dtsi | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/s32g2.dtsi b/arch/arm64/boot/dts/freescale/s32g2.dtsi
index 09d2fbbe1d8c..e58ea0d3b083 100644
--- a/arch/arm64/boot/dts/freescale/s32g2.dtsi
+++ b/arch/arm64/boot/dts/freescale/s32g2.dtsi
@@ -612,5 +612,12 @@ gic: interrupt-controller@50800000 {
 			interrupt-controller;
 			#interrupt-cells = <3>;
 		};
+
+		ocotp: ocotp@400a4000 {
+			compatible = "nxp,s32g2-ocotp";
+			reg = <0x400a4000 0x400>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+		};
 	};
 };
diff --git a/arch/arm64/boot/dts/freescale/s32g3.dtsi b/arch/arm64/boot/dts/freescale/s32g3.dtsi
index 39effbe8217c..184a29dea184 100644
--- a/arch/arm64/boot/dts/freescale/s32g3.dtsi
+++ b/arch/arm64/boot/dts/freescale/s32g3.dtsi
@@ -681,6 +681,13 @@ gic: interrupt-controller@50800000 {
 			      <0x50420000 0x2000>;
 			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
 		};
+
+		ocotp: ocotp@400a4000 {
+			compatible = "nxp,s32g3-ocotp", "nxp,s32g2-ocotp";
+			reg = <0x400a4000 0x400>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+		};
 	};
 
 	timer {
-- 
2.47.2

Re: [PATCH 3/3] arm64: dts: s32g: Add device tree information for the OCOTP driver

[Krzysztof Kozlowski]

On 16/08/2025 12:47, Dan Carpenter wrote:
> Add the device tree information for the S32G On Chip One-Time
> Programmable Controller (OCOTP) chip.
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
> ---
>  arch/arm64/boot/dts/freescale/s32g2.dtsi | 7 +++++++
>  arch/arm64/boot/dts/freescale/s32g3.dtsi | 7 +++++++
>  2 files changed, 14 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/s32g2.dtsi b/arch/arm64/boot/dts/freescale/s32g2.dtsi
> index 09d2fbbe1d8c..e58ea0d3b083 100644
> --- a/arch/arm64/boot/dts/freescale/s32g2.dtsi
> +++ b/arch/arm64/boot/dts/freescale/s32g2.dtsi
> @@ -612,5 +612,12 @@ gic: interrupt-controller@50800000 {
>  			interrupt-controller;
>  			#interrupt-cells = <3>;
>  		};
> +
> +		ocotp: ocotp@400a4000 {

Nodename: efuse@ or nvmem@

> +			compatible = "nxp,s32g2-ocotp";
> +			reg = <0x400a4000 0x400>;
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +		};
>  	};
>  };
> diff --git a/arch/arm64/boot/dts/freescale/s32g3.dtsi b/arch/arm64/boot/dts/freescale/s32g3.dtsi
> index 39effbe8217c..184a29dea184 100644
> --- a/arch/arm64/boot/dts/freescale/s32g3.dtsi
> +++ b/arch/arm64/boot/dts/freescale/s32g3.dtsi
> @@ -681,6 +681,13 @@ gic: interrupt-controller@50800000 {
>  			      <0x50420000 0x2000>;
>  			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
>  		};
> +
> +		ocotp: ocotp@400a4000 {

Same here


Best regards,
Krzysztof

Re: [PATCH 0/3] nvmem: s32g-ocotp: Add driver for S32G OCOTP

[Rob Herring (Arm)]

On Sat, 16 Aug 2025 13:46:57 +0300, Dan Carpenter wrote:
> This driver provides a way to access the On Chip One-Time Programmable
> Controller (OCOTP) on the s32g chipset.  There are three versions of this
> chip but they're compatible.
> 
> Ciprian Costea (2):
>   dt-bindings: nvmem: Add the nxp,s32g-ocotp yaml file
>   nvmem: s32g-ocotp: Add driver for S32G OCOTP
> 
> Dan Carpenter (1):
>   arm64: dts: s32g: Add device tree information for the OCOTP driver
> 
>  .../bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml  |  57 ++++++
>  arch/arm64/boot/dts/freescale/s32g2.dtsi      |   7 +
>  arch/arm64/boot/dts/freescale/s32g3.dtsi      |   7 +
>  drivers/nvmem/Kconfig                         |  10 +
>  drivers/nvmem/Makefile                        |   2 +
>  drivers/nvmem/s32g-ocotp-nvmem.c              | 171 ++++++++++++++++++
>  6 files changed, 254 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml
>  create mode 100644 drivers/nvmem/s32g-ocotp-nvmem.c
> 
> --
> 2.47.2
> 
> 
> 


My bot found new DTB warnings on the .dts files added or changed in this
series.

Some warnings may be from an existing SoC .dtsi. Or perhaps the warnings
are fixed by another series. Ultimately, it is up to the platform
maintainer whether these warnings are acceptable or not. No need to reply
unless the platform maintainer has comments.

If you already ran DT checks and didn't see these error(s), then
make sure dt-schema is up to date:

  pip3 install dtschema --upgrade


This patch series was applied (using b4) to base:
 Base: attempting to guess base-commit...
 Base: remotes/korg/master-95-g90d970cade8e (exact match)

If this is not the correct base, please add 'base-commit' tag
(or use b4 which does this automatically)

New warnings running 'make CHECK_DTBS=y for arch/arm64/boot/dts/freescale/' for cover.1755341000.git.dan.carpenter@linaro.org:

arch/arm64/boot/dts/freescale/s32g274a-evb.dtb: ocotp@400a4000 (nxp,s32g2-ocotp): compatible: 'oneOf' conditional failed, one must be fixed:
	['nxp,s32g2-ocotp'] is too short
	'nxp,s32g2-ocotp' is not one of ['nxp,s32g3-ocotp', 'nxp,s32r45-ocotp']
	from schema $id: http://devicetree.org/schemas/nvmem/nxp,s32g-ocotp-nvmem.yaml#
arch/arm64/boot/dts/freescale/s32g274a-evb.dtb: ocotp@400a4000 (nxp,s32g2-ocotp): Unevaluated properties are not allowed ('compatible' was unexpected)
	from schema $id: http://devicetree.org/schemas/nvmem/nxp,s32g-ocotp-nvmem.yaml#
arch/arm64/boot/dts/freescale/s32g274a-rdb2.dtb: ocotp@400a4000 (nxp,s32g2-ocotp): compatible: 'oneOf' conditional failed, one must be fixed:
	['nxp,s32g2-ocotp'] is too short
	'nxp,s32g2-ocotp' is not one of ['nxp,s32g3-ocotp', 'nxp,s32r45-ocotp']
	from schema $id: http://devicetree.org/schemas/nvmem/nxp,s32g-ocotp-nvmem.yaml#
arch/arm64/boot/dts/freescale/s32g274a-rdb2.dtb: ocotp@400a4000 (nxp,s32g2-ocotp): Unevaluated properties are not allowed ('compatible' was unexpected)
	from schema $id: http://devicetree.org/schemas/nvmem/nxp,s32g-ocotp-nvmem.yaml#