linux-kernel - Re: [PATCH v2] ARM: dts: imx: Add Y Soft IOTA Draco, Hydra and Ursa boards

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Date:   Fri, 28 Dec 2018 16:20:37 -0200
From:   Fabio Estevam <festevam@...il.com>
To:     Vokáč Michal <Michal.Vokac@...ft.com>
Cc:     Rob Herring <robh+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Andrew Lunn <andrew@...n.ch>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Fabio Estevam <fabio.estevam@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2] ARM: dts: imx: Add Y Soft IOTA Draco, Hydra and Ursa boards

Hi Vokáč,

On Tue, Dec 18, 2018 at 12:42 PM Vokáč Michal <Michal.Vokac@...ft.com> wrote:

> +&fec {
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&pinctrl_enet>;
> +       phy-mode = "rgmii-id";
> +       phy-reset-gpios = <&gpio1 25 GPIO_ACTIVE_HIGH>;

Are you sure this is active high?

The FEC driver ignores the polarity of phy-reset-gpios and it assumes
the GPIO reset as active low.

If it really is active high, then you would need to pass the
"phy-reset-active-high" property.

> +/ {
> +       model = "Y Soft IOTA Draco i.MX6Solo board";
> +       compatible = "ysoft,imx6dl-yapp4-draco", "fsl,imx6dl";
> +
> +       cpus {
> +               /delete-node/ cpu@1;

Is this really needed? We don't usually do this on imx6solo dts board files.

Only one CPU will be brought up online on imx6solo anyway.

> +       };
> +
> +       memory@...00000 {

Need to pass "device_type = "memory";"

> +/ {
> +       model = "Y Soft IOTA Hydra i.MX6DualLite board";
> +       compatible = "ysoft,imx6dl-yapp4-hydra", "fsl,imx6dl";
> +
> +       memory@...00000 {

Need to pass "device_type = "memory";"

> +       memory@...00000 {

Need to pass "device_type = "memory";"