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Message-ID: <20200928191310.GA3092001@bogus>
Date: Mon, 28 Sep 2020 14:13:10 -0500
From: Rob Herring <robh@...nel.org>
To: Zhen Lei <thunder.leizhen@...wei.com>
Cc: Wei Xu <xuwei5@...ilicon.com>,
Jonathan Cameron <Jonathan.Cameron@...wei.com>,
devicetree <devicetree@...r.kernel.org>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
Libin <huawei.libin@...wei.com>,
Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: Re: [PATCH v4 07/20] dt-bindings: arm: hisilicon: convert system
controller bindings to json-schema
On Mon, Sep 28, 2020 at 11:13:11PM +0800, Zhen Lei wrote:
> Convert the Hisilicon system controller and its variants binding to DT
> schema format using json-schema. All of them are grouped into one yaml
> file, to help users understand differences and avoid repeated
> descriptions.
>
> Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
> ---
> .../controller/hisilicon,hi6220-sysctrl.txt | 19 ----
> .../controller/hisilicon,hip01-sysctrl.txt | 19 ----
> .../arm/hisilicon/controller/hisilicon,sysctrl.txt | 25 -----
> .../hisilicon/controller/hisilicon,sysctrl.yaml | 115 +++++++++++++++++++++
> .../bindings/arm/hisilicon/hi3519-sysctrl.txt | 14 ---
> 5 files changed, 115 insertions(+), 77 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,hi6220-sysctrl.txt
> delete mode 100644 Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,hip01-sysctrl.txt
> delete mode 100644 Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,sysctrl.txt
> create mode 100644 Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,sysctrl.yaml
> delete mode 100644 Documentation/devicetree/bindings/arm/hisilicon/hi3519-sysctrl.txt
>
> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,hi6220-sysctrl.txt b/Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,hi6220-sysctrl.txt
> deleted file mode 100644
> index 07e318eda254f52..000000000000000
> --- a/Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,hi6220-sysctrl.txt
> +++ /dev/null
> @@ -1,19 +0,0 @@
> -Hisilicon Hi6220 system controller
> -
> -Required properties:
> -- compatible : "hisilicon,hi6220-sysctrl"
> -- reg : Register address and size
> -- #clock-cells: should be set to 1, many clock registers are defined
> - under this controller and this property must be present.
> -
> -Hisilicon designs this controller as one of the system controllers,
> -its main functions are the same as Hisilicon system controller, but
> -the register offset of some core modules are different.
> -
> -Example:
> - /*for Hi6220*/
> - sys_ctrl: sys_ctrl@...30000 {
> - compatible = "hisilicon,hi6220-sysctrl", "syscon";
> - reg = <0x0 0xf7030000 0x0 0x2000>;
> - #clock-cells = <1>;
> - };
> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,hip01-sysctrl.txt b/Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,hip01-sysctrl.txt
> deleted file mode 100644
> index db2dfdce799db91..000000000000000
> --- a/Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,hip01-sysctrl.txt
> +++ /dev/null
> @@ -1,19 +0,0 @@
> -Hisilicon HiP01 system controller
> -
> -Required properties:
> -- compatible : "hisilicon,hip01-sysctrl"
> -- reg : Register address and size
> -
> -The HiP01 system controller is mostly compatible with hisilicon
> -system controller,but it has some specific control registers for
> -HIP01 SoC family, such as slave core boot, and also some same
> -registers located at different offset.
> -
> -Example:
> -
> - /* for hip01-ca9x2 */
> - sysctrl: system-controller@...00000 {
> - compatible = "hisilicon,hip01-sysctrl", "hisilicon,sysctrl";
> - reg = <0x10000000 0x1000>;
> - reboot-offset = <0x4>;
> - };
> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,sysctrl.txt b/Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,sysctrl.txt
> deleted file mode 100644
> index 963f7f1ca7a2f0c..000000000000000
> --- a/Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,sysctrl.txt
> +++ /dev/null
> @@ -1,25 +0,0 @@
> -Hisilicon system controller
> -
> -Required properties:
> -- compatible : "hisilicon,sysctrl"
> -- reg : Register address and size
> -
> -Optional properties:
> -- smp-offset : offset in sysctrl for notifying slave cpu booting
> - cpu 1, reg;
> - cpu 2, reg + 0x4;
> - cpu 3, reg + 0x8;
> - If reg value is not zero, cpun exit wfi and go
> -- resume-offset : offset in sysctrl for notifying cpu0 when resume
> -- reboot-offset : offset in sysctrl for system reboot
> -
> -Example:
> -
> - /* for Hi3620 */
> - sysctrl: system-controller@...02000 {
> - compatible = "hisilicon,sysctrl";
> - reg = <0xfc802000 0x1000>;
> - smp-offset = <0x31c>;
> - resume-offset = <0x308>;
> - reboot-offset = <0x4>;
> - };
> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,sysctrl.yaml b/Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,sysctrl.yaml
> new file mode 100644
> index 000000000000000..37b214e0a401d7d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/hisilicon/controller/hisilicon,sysctrl.yaml
> @@ -0,0 +1,115 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/hisilicon/controller/hisilicon,sysctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Hisilicon system controller
> +
> +maintainers:
> + - Wei Xu <xuwei5@...ilicon.com>
> +
> +description: |
> + The Hisilicon system controller is used on many Hisilicon boards, it can be
> + used to assist the slave core startup, reboot the system, etc.
> +
> + There are some variants of the Hisilicon system controller, such as HiP01,
> + Hi3519, Hi6220 system controller, each of them is mostly compatible with the
> + Hisilicon system controller, but some same registers located at different
> + offset. In addition, the HiP01 system controller has some specific control
> + registers for HIP01 SoC family, such as slave core boot.
> +
> + The compatible names of each system controller are as follows:
> + Hisilicon system controller --> hisilicon,sysctrl
> + HiP01 system controller --> hisilicon,hip01-sysctrl
> + Hi6220 system controller --> hisilicon,hi6220-sysctrl
> + Hi3519 system controller --> hisilicon,hi3519-sysctrl
> +
> +allOf:
> + - if:
> + properties:
> + compatible:
> + contains:
> + const: hisilicon,hi6220-sysctrl
> + then:
> + required:
> + - '#clock-cells'
> +
> +properties:
> + compatible:
> + oneOf:
> + - items:
> + - const: hisilicon,sysctrl
> + - items:
> + - const: hisilicon,sysctrl
> + - const: syscon
Of these 2, the 1st case should be fixed (add 'syscon' in the dts
files).
> + - items:
> + - const: hisilicon,hip01-sysctrl
> + - const: hisilicon,sysctrl
> + - items:
> + - const: hisilicon,hi6220-sysctrl
> + - const: syscon
> + - items:
> + - const: hisilicon,hi3519-sysctrl
> + - const: syscon
All the cases with 'syscon' can be a single entry. Use 'enum' for the
1st string.
> +
> + reg:
> + description: Register address and size
That's every 'reg' property. Drop it.
> + maxItems: 1
> +
> + smp-offset:
> + description: |
> + offset in sysctrl for notifying slave cpu booting
> + cpu 1, reg;
> + cpu 2, reg + 0x4;
> + cpu 3, reg + 0x8;
> + If reg value is not zero, cpun exit wfi and go
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> + resume-offset:
> + description: offset in sysctrl for notifying cpu0 when resume
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> + reboot-offset:
> + description: offset in sysctrl for system reboot
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> + '#clock-cells':
> + description: the number of cells occupied by one clock ID.
Drop.
> + const: 1
> +
> +required:
> + - compatible
> + - reg
additionalProperties: false
(and in other patches)
> +
> +examples:
> + - |
> + /* Hisilicon system controller */
> + system-controller@...02000 {
> + compatible = "hisilicon,sysctrl";
> + reg = <0xfc802000 0x1000>;
> + smp-offset = <0x31c>;
> + resume-offset = <0x308>;
> + reboot-offset = <0x4>;
> + };
> +
> + /* HiP01 system controller */
> + system-controller@...00000 {
> + compatible = "hisilicon,hip01-sysctrl", "hisilicon,sysctrl";
> + reg = <0x10000000 0x1000>;
> + reboot-offset = <0x4>;
> + };
> +
> + /* Hi6220 system controller */
> + system-controller@...30000 {
> + compatible = "hisilicon,hi6220-sysctrl", "syscon";
> + reg = <0xf7030000 0x2000>;
> + #clock-cells = <1>;
> + };
> +
> + /* Hi3519 system controller */
> + system-controller@...10000 {
> + compatible = "hisilicon,hi3519-sysctrl", "syscon";
> + reg = <0x12010000 0x1000>;
> + };
> +...
> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hi3519-sysctrl.txt b/Documentation/devicetree/bindings/arm/hisilicon/hi3519-sysctrl.txt
> deleted file mode 100644
> index 8defacc44dd5b9e..000000000000000
> --- a/Documentation/devicetree/bindings/arm/hisilicon/hi3519-sysctrl.txt
> +++ /dev/null
> @@ -1,14 +0,0 @@
> -* Hisilicon Hi3519 System Controller Block
> -
> -This bindings use the following binding:
> -Documentation/devicetree/bindings/mfd/syscon.yaml
> -
> -Required properties:
> -- compatible: "hisilicon,hi3519-sysctrl".
> -- reg: the register region of this block
> -
> -Examples:
> -sysctrl: system-controller@...10000 {
> - compatible = "hisilicon,hi3519-sysctrl", "syscon";
> - reg = <0x12010000 0x1000>;
> -};
> --
> 1.8.3
>
>
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