在2024年6月13日六月 下午8:04，Rob Herring写道：
> On Wed, Jun 12, 2024 at 12:56:25PM +0100, Jiaxun Yang wrote:
>> This compatible has been used in arch/mips/boot/dts/img/boston.dts
>> for a while but never documented properly.
>>
>> Write a new binding for this device.
>> This also covers old img,boston-clock binding so remove that binding.
>>
>> Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
>> ---
>> .../devicetree/bindings/clock/img,boston-clock.txt | 31 ---------
>> .../bindings/mfd/img,boston-platform-regs.yaml | 74 ++++++++++++++++++++++
>> 2 files changed, 74 insertions(+), 31 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/clock/img,boston-clock.txt b/Documentation/devicetree/bindings/clock/img,boston-clock.txt
>> deleted file mode 100644
>> index 7bc5e9ffb624..000000000000
>> --- a/Documentation/devicetree/bindings/clock/img,boston-clock.txt
>> +++ /dev/null
>> @@ -1,31 +0,0 @@
>> -Binding for Imagination Technologies MIPS Boston clock sources.
>> -
>> -This binding uses the common clock binding[1].
>> -
>> -[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
>> -
>> -The device node must be a child node of the syscon node corresponding to the
>> -Boston system's platform registers.
>> -
>> -Required properties:
>> -- compatible : Should be "img,boston-clock".
>> -- #clock-cells : Should be set to 1.
>> - Values available for clock consumers can be found in the header file:
>> - <dt-bindings/clock/boston-clock.h>
>> -
>> -Example:
>> -
>> - system-controller@17ffd000 {
>> - compatible = "img,boston-platform-regs", "syscon";
>> - reg = <0x17ffd000 0x1000>;
>> -
>> - clk_boston: clock {
>> - compatible = "img,boston-clock";
>> - #clock-cells = <1>;
>> - };
>> - };
>> -
>> - uart0: uart@17ffe000 {
>> - /* ... */
>> - clocks = <&clk_boston BOSTON_CLK_SYS>;
>> - };
>> diff --git a/Documentation/devicetree/bindings/mfd/img,boston-platform-regs.yaml b/Documentation/devicetree/bindings/mfd/img,boston-platform-regs.yaml
>> new file mode 100644
>> index 000000000000..bf94de38a89f
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mfd/img,boston-platform-regs.yaml
>> @@ -0,0 +1,74 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/mfd/img,boston-platform-regs.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Imagination Technologies Boston Platform Registers
>> +
>> +maintainers:
>> + - Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
>> +
>> +properties:
>> + compatible:
>> + items:
>> + - const: img,boston-platform-regs
>> + - const: syscon
>> + - const: simple-mfd
>
> Why did you add 'simple-mfd'? That's not what is in use.
>
U-Boot needs this to probe sub-nodes such as reboot and clock :-(
I had updated dts in an earlier patch of this series.
Thanks
>>
--
- Jiaxun
