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Date: Tue, 29 Sep 2020 11:09:25 +0800
From: "Leizhen (ThunderTown)" <thunder.leizhen@...wei.com>
To: Rob Herring <robh@...nel.org>
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 2020/9/29 3:13, Rob Herring wrote:
> 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).
OK, I will fix it.
>
>> + - 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.
OK, I will do it.
>
>> +
>> + reg:
>> + description: Register address and size
>
> That's every 'reg' property. Drop it.
OK, I will drop the description.
>
>> + 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.
OK, I will drop the description.
>
>> + const: 1
>> +
>> +required:
>> + - compatible
>> + - reg
>
> additionalProperties: false
>
> (and in other patches)
OK, I will do it.
>
>> +
>> +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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