netdev - Re: [PATCH 2/8] dt-bindings: stm32-dwmac: add support of MPU families

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Message-ID: <20180501135848.GA12597@rob-hp-laptop>
Date:   Tue, 1 May 2018 08:58:48 -0500
From:   Rob Herring <robh@...nel.org>
To:     Christophe Roullier <christophe.roullier@...com>
Cc:     mark.rutland@....com, mcoquelin.stm32@...il.com,
        alexandre.torgue@...com, peppe.cavallaro@...com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH  2/8] dt-bindings: stm32-dwmac: add support of MPU
 families

On Tue, Apr 24, 2018 at 05:01:54PM +0200, Christophe Roullier wrote:
> Add description for Ethernet MPU families fields
> 
> Signed-off-by: Christophe Roullier <christophe.roullier@...com>
> ---
>  Documentation/devicetree/bindings/net/stm32-dwmac.txt | 16 ++++++++++++++--
>  1 file changed, 14 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/stm32-dwmac.txt b/Documentation/devicetree/bindings/net/stm32-dwmac.txt
> index 489dbcb..e9d1c4a 100644
> --- a/Documentation/devicetree/bindings/net/stm32-dwmac.txt
> +++ b/Documentation/devicetree/bindings/net/stm32-dwmac.txt
> @@ -6,14 +6,26 @@ Please see stmmac.txt for the other unchanged properties.
>  The device node has following properties.
>  
>  Required properties:
> -- compatible:  Should be "st,stm32-dwmac" to select glue, and
> +- compatible:  For MCU family should be "st,stm32-dwmac" to select glue, and
>  	       "snps,dwmac-3.50a" to select IP version.
> +	       For MPU family should be "st,stm32mp1-dwmac" to select
> +	       glue, and "snps,dwmac-4.20a" to select IP version.
>  - clocks: Must contain a phandle for each entry in clock-names.
>  - clock-names: Should be "stmmaceth" for the host clock.
>  	       Should be "mac-clk-tx" for the MAC TX clock.
>  	       Should be "mac-clk-rx" for the MAC RX clock.
> +	       For MPU family "ethstp" for power mode clock.
> +	       For MPU family need also "syscfg-clk" for SYSCFG clock.

These are in addition or instead of the first 3 clocks.

> +- interrupt-names: Should contain a list of interrupt names corresponding to
> +           the interrupts in the interrupts property, if available.

You need to list the names. Seems unrelated to MPU support.

>  - st,syscon : Should be phandle/offset pair. The phandle to the syscon node which
> -	      encompases the glue register, and the offset of the control register.
> +	       encompases the glue register, and the offset of the control register.
> +
> +Optional properties:
> +- clock-names:     For MPU family "mac-clk-ck" for PHY without quartz

The clock is always connected whether you use it or not, right? So it 
shouldn't be optional based on use.

> +- st,int-phyclk :  valid only where PHY do not have quartz and need to be clock
> +	           by RCC

Boolean?


> +
>  Example:
>  
>  	ethernet@...28000 {
> -- 
> 1.9.1
> 
> --
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