linux-kernel - Re: [PATCH v3 1/3] dt-bindings: net: add reset property for aspeed, ast2600-mdio binding

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Date:   Fri, 25 Mar 2022 13:19:28 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Dylan Hung <dylan_hung@...eedtech.com>, robh+dt@...nel.org,
        joel@....id.au, andrew@...id.au, andrew@...n.ch,
        hkallweit1@...il.com, linux@...linux.org.uk, davem@...emloft.net,
        kuba@...nel.org, pabeni@...hat.com, p.zabel@...gutronix.de,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Cc:     BMC-SW@...eedtech.com
Subject: Re: [PATCH v3 1/3] dt-bindings: net: add reset property for aspeed,
 ast2600-mdio binding

On 25/03/2022 05:14, Dylan Hung wrote:
> The AST2600 MDIO bus controller has a reset control bit and must be
> deasserted before manipulating the MDIO controller. By default, the
> hardware asserts the reset so the driver only need to deassert it.
> 
> Regarding to the old DT blobs which don't have reset property in them,
> the reset deassertion is usually done by the bootloader so the reset
> property is optional to work with them.
> 
> Signed-off-by: Dylan Hung <dylan_hung@...eedtech.com>
> ---
>  .../devicetree/bindings/net/aspeed,ast2600-mdio.yaml         | 5 +++++
>  1 file changed, 5 insertions(+)
> 


Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>


Best regards,
Krzysztof