2017-03-03 07:21:56

by Rob Herring (Arm)

[permalink] [raw]
Subject: Re: [PATCH V3 3/4] dt-bindings: serial: add a new compatible string for SC9860

On Thu, Mar 02, 2017 at 02:22:09PM +0800, Chunyan Zhang wrote:
> SC9860 use the same serial device, so added a new compatible string to
> support SC9860 as well, also added an example of how to describe this
> serial device in DT.
>
> Signed-off-by: Chunyan Zhang <[email protected]>
> ---
> Documentation/devicetree/bindings/serial/sprd-uart.txt | 15 ++++++++++++++-
> 1 file changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/serial/sprd-uart.txt b/Documentation/devicetree/bindings/serial/sprd-uart.txt
> index 2aff0f2..8bd8144 100644
> --- a/Documentation/devicetree/bindings/serial/sprd-uart.txt
> +++ b/Documentation/devicetree/bindings/serial/sprd-uart.txt
> @@ -1,7 +1,20 @@
> * Spreadtrum serial UART
>
> Required properties:
> -- compatible: must be "sprd,sc9836-uart"
> +- compatible must contain:
> + * "sprd,sc9836-uart" for SC9836 and all Spreadtrum SoCs
> + This also can be specific with:
> + * "sprd,sc9860-uart" for SC9860

Just say:

- compatible: must be one of:
"sprd,sc9836-uart"
"sprd,sc9860-uart", "sprd,sc9836-uart"

> +
> - reg: offset and length of the register set for the device
> - interrupts: exactly one interrupt specifier
> - clocks: phandles to input clocks.
> +
> +Example:
> + uart0: serial@70000000 {
> + compatible = "sprd,sc9860-uart",
> + "sprd,sc9836-uart";
> + reg = <0x000000 0x100>;

unit address doesn't match the reg property.

> + interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&ext_26m>;
> + };
> --
> 2.7.4
>


2017-03-03 11:54:38

by Chunyan Zhang

[permalink] [raw]
Subject: Re: [PATCH V3 3/4] dt-bindings: serial: add a new compatible string for SC9860

On 3 March 2017 at 14:21, Rob Herring <[email protected]> wrote:
> On Thu, Mar 02, 2017 at 02:22:09PM +0800, Chunyan Zhang wrote:
>> SC9860 use the same serial device, so added a new compatible string to
>> support SC9860 as well, also added an example of how to describe this
>> serial device in DT.
>>
>> Signed-off-by: Chunyan Zhang <[email protected]>
>> ---
>> Documentation/devicetree/bindings/serial/sprd-uart.txt | 15 ++++++++++++++-
>> 1 file changed, 14 insertions(+), 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/serial/sprd-uart.txt b/Documentation/devicetree/bindings/serial/sprd-uart.txt
>> index 2aff0f2..8bd8144 100644
>> --- a/Documentation/devicetree/bindings/serial/sprd-uart.txt
>> +++ b/Documentation/devicetree/bindings/serial/sprd-uart.txt
>> @@ -1,7 +1,20 @@
>> * Spreadtrum serial UART
>>
>> Required properties:
>> -- compatible: must be "sprd,sc9836-uart"
>> +- compatible must contain:
>> + * "sprd,sc9836-uart" for SC9836 and all Spreadtrum SoCs
>> + This also can be specific with:
>> + * "sprd,sc9860-uart" for SC9860
>
> Just say:
>
> - compatible: must be one of:
> "sprd,sc9836-uart"
> "sprd,sc9860-uart", "sprd,sc9836-uart"
>
>> +
>> - reg: offset and length of the register set for the device
>> - interrupts: exactly one interrupt specifier
>> - clocks: phandles to input clocks.
>> +
>> +Example:
>> + uart0: serial@70000000 {
>> + compatible = "sprd,sc9860-uart",
>> + "sprd,sc9836-uart";
>> + reg = <0x000000 0x100>;
>
> unit address doesn't match the reg property.

OK, I will revise dts file accordingly.

Thanks,
Chunyan

>
>> + interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
>> + clocks = <&ext_26m>;
>> + };
>> --
>> 2.7.4
>>