linux-kernel - Re: [PATCHv2 5/5] arm64: allwinner: a64: Add support for TERES-I laptop

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Message-ID: <5B309D37.80207@broadcom.com>
Date:   Mon, 25 Jun 2018 09:43:51 +0200
From:   Arend van Spriel <arend.vanspriel@...adcom.com>
To:     Harald Geyer <harald@...ib.org>, Icenowy Zheng <icenowy@...c.io>
Cc:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Andre Przywara <andre.przywara@....com>, info@...mex.com,
        linux-wireless@...r.kernel.org
Subject: Re: [PATCHv2 5/5] arm64: allwinner: a64: Add support for TERES-I
 laptop

On 6/24/2018 6:34 PM, Harald Geyer wrote:
> Icenowy Zheng writes:
>> >在 2018-03-15四的 16:25 +0000，Harald Geyer写道：
>>> > >+&mmc1 {
>>> > >+	pinctrl-names = "default";
>>> > >+	pinctrl-0 = <&mmc1_pins>;
>>> > >+	vmmc-supply = <&reg_aldo2>;
>>> > >+	vqmmc-supply = <&reg_dldo4>;
>>> > >+	mmc-pwrseq = <&wifi_pwrseq>;
>>> > >+	bus-width = <4>;
>>> > >+	non-removable;
>>> > >+	status = "okay";
>>> > >+
>>> > >+	rtl8723bs: wifi@1 {
>>> > >+		reg = <1>;
>>> > >+		interrupt-parent = <&r_pio>;
>>> > >+		interrupts = <0 3 IRQ_TYPE_LEVEL_LOW>; /* PL3 */
>>> > >+		interrupt-names = "host-wake";
>>> > >+	};

[...]

>> >- This device node has no binding. The "host-wake" interrupt is part of
>> >  Broadcom SDIO Wi-Fi binding, rather than a generic one.
> I think the general mmc and interrupts bindings apply. And the mmc binding
> clearly states that for sub-nodes a compatible string is optional.
>
> However I just realized that the 'interrupt-names' property is not part
> of the general interrupts binding, so I guess at least this property should
> be removed.

Indeed. If the device just used the SDIO interrupt this is not needed. 
The Broadcom device can use either SDIO interrupt or a so-called 
out-of-band host-wake interrupt, which is what the above represents.

Regards,
Arend