linux-kernel - Re: [PATCH v3 4/7] dt-bindings: atmel-usart: remove wildcard

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Date:   Tue, 14 Jan 2020 11:42:37 +0100
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Claudiu Beznea <claudiu.beznea@...rochip.com>
Cc:     robh+dt@...nel.org, lee.jones@...aro.org, mark.rutland@....com,
        nicolas.ferre@...rochip.com, ludovic.desroches@...rochip.com,
        radu_nicolae.pirea@....ro, richard.genoud@...il.com,
        a.zummo@...ertech.it, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-spi@...r.kernel.org, linux-rtc@...r.kernel.org
Subject: Re: [PATCH v3 4/7] dt-bindings: atmel-usart: remove wildcard

On 14/01/2020 12:23:14+0200, Claudiu Beznea wrote:
> Remove chip whildcard and introduce the list of compatibles instead.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea@...rochip.com>
> ---
>  Documentation/devicetree/bindings/mfd/atmel-usart.txt | 7 +++----
>  1 file changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mfd/atmel-usart.txt b/Documentation/devicetree/bindings/mfd/atmel-usart.txt
> index 699fd3c9ace8..778e8310606a 100644
> --- a/Documentation/devicetree/bindings/mfd/atmel-usart.txt
> +++ b/Documentation/devicetree/bindings/mfd/atmel-usart.txt
> @@ -1,10 +1,9 @@
>  * Atmel Universal Synchronous Asynchronous Receiver/Transmitter (USART)
>  
>  Required properties for USART:
> -- compatible: Should be "atmel,<chip>-usart" or "atmel,<chip>-dbgu"
> -  The compatible <chip> indicated will be the first SoC to support an
> -  additional mode or an USART new feature.
> -  For the dbgu UART, use "atmel,<chip>-dbgu", "atmel,<chip>-usart"
> +- compatible: Should be one of the following:
> +	- "atmel,at91rm9200-dbgu", "atmel,at91rm9200-usart"
> +	- "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart"

All the uarts are not dbgus, so this need to be:

 - "atmel,at91rm9200-usart"
 - "atmel,at91sam9260-usart"
 - "atmel,at91rm9200-dbgu", "atmel,at91rm9200-usart"
 - "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart"

Also, you need to update drivers/soc/atmel/soc.c

>  - reg: Should contain registers location and length
>  - interrupts: Should contain interrupt
>  - clock-names: tuple listing input clock names.
> -- 
> 2.7.4
> 

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com