linux-kernel - Re: [PATCH v4 01/10] dt-bindings: soc: google: add google,gs101-dtzpc

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Message-ID: <20260129165531.GA1269692-robh@kernel.org>
Date: Thu, 29 Jan 2026 10:55:31 -0600
From: Rob Herring <robh@...nel.org>
To: André Draszik <andre.draszik@...aro.org>
Cc: Krzysztof Kozlowski <krzk@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Peter Griffin <peter.griffin@...aro.org>,
	Tudor Ambarus <tudor.ambarus@...aro.org>,
	Juan Yescas <jyescas@...gle.com>,
	Will McVicker <willmcvicker@...gle.com>, kernel-team@...roid.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v4 01/10] dt-bindings: soc: google: add google,gs101-dtzpc

On Wed, Jan 28, 2026 at 04:10:50PM +0000, André Draszik wrote:
> The Exynos Distributed TruztZone Protection Control (D_TZPC) provides
> an interface to the protection bits that are included in the TrustZone
> design in a secure system. It configures each area of the memory as
> secure or non-secure.

This sounds like what access-controllers binding is for. Does that work 
here?

> Signed-off-by: André Draszik <andre.draszik@...aro.org>
> ---
>  .../bindings/soc/google/google,gs101-dtzpc.yaml    | 42 ++++++++++++++++++++++
>  MAINTAINERS                                        |  1 +
>  2 files changed, 43 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/google/google,gs101-dtzpc.yaml b/Documentation/devicetree/bindings/soc/google/google,gs101-dtzpc.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..a8c61ce069d6910c47753bf14a792eb58e6ae182
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/google/google,gs101-dtzpc.yaml
> @@ -0,0 +1,42 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/soc/google/google,gs101-dtzpc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Samsung Exynos Distributed TruztZone Protection Control.
> +
> +description:
> +  Distributed TrustZone Protection Control (D_TZPC) provides an interface to the
> +  protection bits that are included in the TrustZone design in a secure system.
> +  It configures each area of the memory as secure or non-secure.
> +
> +maintainers:
> +  - André Draszik <andre.draszik@...aro.org>
> +
> +properties:
> +  compatible:
> +    const: google,gs101-dtzpc
> +
> +  clocks:
> +    maxItems: 1
> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - clocks
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/google,gs101.h>
> +
> +    dtzpc_hsi0: dtzpc@...10000 {
> +      compatible = "google,gs101-dtzpc";
> +      reg = <0x11010000 0x10000>;
> +      clocks = <&cmu_hsi0 CLK_GOUT_HSI0_D_TZPC_HSI0_PCLK>;
> +    };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index a56f8f00aebb938aa765a8a6d66dfeb7f062dac8..98b2ef47c809ac0232e6941c9483b19d7c798bb4 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -10833,6 +10833,7 @@ P:	Documentation/process/maintainer-soc-clean-dts.rst
>  C:	irc://irc.oftc.net/pixel6-kernel-dev
>  F:	Documentation/devicetree/bindings/clock/google,gs101-clock.yaml
>  F:	Documentation/devicetree/bindings/phy/google,lga-usb-phy.yaml
> +F:	Documentation/devicetree/bindings/soc/google/google,gs101-dtzpc.yaml
>  F:	Documentation/devicetree/bindings/soc/google/google,gs101-pmu-intr-gen.yaml
>  F:	Documentation/devicetree/bindings/usb/google,lga-dwc3.yaml
>  F:	arch/arm64/boot/dts/exynos/google/
> 
> -- 
> 2.52.0.457.g6b5491de43-goog
>