linux-kernel - Re: [PATCH net-next RESEND v5 1/3] dt-bindings: net: add reset property for aspeed, ast2600-mdio binding

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Date:   Tue, 19 Apr 2022 10:21:15 +0930
From:   "Andrew Jeffery" <andrew@...id.au>
To:     "Dylan Hung" <dylan_hung@...eedtech.com>,
        "Rob Herring" <robh+dt@...nel.org>,
        "Joel Stanley" <joel@....id.au>, "Andrew Lunn" <andrew@...n.ch>,
        "Heiner Kallweit" <hkallweit1@...il.com>,
        "Russell King" <linux@...linux.org.uk>,
        "David Miller" <davem@...emloft.net>,
        "Jakub Kicinski" <kuba@...nel.org>, pabeni@...hat.com,
        "Philipp Zabel" <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 <netdev@...r.kernel.org>,
        "Krzysztof Kozlowski" <krzk+dt@...nel.org>
Cc:     BMC-SW@...eedtech.com, "Krzysztof Kozlowski" <krzk@...nel.org>
Subject: Re: [PATCH net-next RESEND v5 1/3] dt-bindings: net: add reset property for
 aspeed, ast2600-mdio binding



On Mon, 18 Apr 2022, at 11:10, 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>
> Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>

Reviewed-by: Andrew Jeffery <andrew@...id.au>