linux-kernel - Re: [PATCH v3] ARM64: dts: meson-axg: enable IR controller

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Date:   Fri, 15 Dec 2017 23:06:51 +0800
From:   Yixun Lan <yixun.lan@...ogic.com>
To:     Jerome Brunet <jbrunet@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        <devicetree@...r.kernel.org>
CC:     <yixun.lan@...ogic.com>, Rob Herring <robh+dt@...nel.org>,
        Neil Armstrong <narmstrong@...libre.com>,
        Mark Rutland <mark.rutland@....com>,
        Carlo Caione <carlo@...one.org>,
        <linux-amlogic@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] ARM64: dts: meson-axg: enable IR controller

Hi Jerome


On 12/15/2017 11:01 PM, Jerome Brunet wrote:
> On Fri, 2017-12-15 at 22:59 +0800, Yixun Lan wrote:
>> Enable IR remote controller which found in Amlogic's Meson-AXG SoCs.
>>
>> Signed-off-by: Yixun Lan <yixun.lan@...ogic.com>
>>
>> ---
>>
>> Changes since v2 at [2]
>>  - rebase to Kevin's v4.16/dt64 branch
>>  - this patch depend on pinctrl DT driver
>>
>> Changes since v1 at [1]:
>>  - drop the compatbile 'amlogic,meson-gx-ir'
>>
>> [2]
>> http://lists.infradead.org/pipermail/linux-amlogic/2017-December/005574.html
>>
>> [1]
>>  http://lists.infradead.org/pipermail/linux-amlogic/2017-November/005527.html
>> ---
>>  arch/arm64/boot/dts/amlogic/meson-axg-s400.dts |  6 ++++++
>>  arch/arm64/boot/dts/amlogic/meson-axg.dtsi     | 14 ++++++++++++++
>>  2 files changed, 20 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/amlogic/meson-axg-s400.dts b/arch/arm64/boot/dts/amlogic/meson-axg-s400.dts
>> index 70eca1f8736a..e85fb665f12e 100644
>> --- a/arch/arm64/boot/dts/amlogic/meson-axg-s400.dts
>> +++ b/arch/arm64/boot/dts/amlogic/meson-axg-s400.dts
>> @@ -20,3 +20,9 @@
>>  &uart_AO {
>>  	status = "okay";
>>  };
>> +
>> +&ir {
>> +	status = "okay";
>> +	pinctrl-0 = <&remote_input_ao_pins>;
>> +	pinctrl-names = "default";
>> +};
>> diff --git a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
>> index a0d7b10da512..1cd34141a5c1 100644
>> --- a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
>> +++ b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
>> @@ -223,6 +223,13 @@
>>  					#gpio-cells = <2>;
>>  					gpio-ranges = <&pinctrl_aobus 0 0 15>;
>>  				};
>> +
>> +				remote_input_ao_pins: remote_input_ao {
>> +					mux {
>> +						groups = "remote_input_ao";
>> +						function = "remote_input_ao";
>> +					};
>> +				};
>>  			};
>>  
>>  			uart_AO: serial@...0 {
>> @@ -242,6 +249,13 @@
>>  				clock-names = "xtal", "pclk", "baud";
>>  				status = "disabled";
>>  			};
>> +
>> +			ir: ir@...0 {
>> +				compatible = "amlogic,meson-gxbb-ir";
> 
> compatible = "amlogic,meson-axg-ir", "amlogic,meson-gxbb-ir";
> 
> please (and the binding doc patch)

what's the policy for adding new compatible string?

is this a must even we don't use it for now?
or what's the problem if adding it when we really need it

> 
>> +				reg = <0x0 0x8000 0x0 0x20>;
>> +				interrupts = <GIC_SPI 196 IRQ_TYPE_EDGE_RISING>;
>> +				status = "disabled";
>> +			};
>>  		};
>>  	};
>>  };
> 
> .
>