linux-kernel - Re: [PATCH v2 2/2] ARM: dts: aspeed: Add device tree for Ampere's Mt. Mitchell BMC

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Date:   Thu, 21 Jul 2022 09:46:10 +0700
From:   Quan Nguyen <quan@...amperecomputing.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        openbmc@...ts.ozlabs.org, Arnd Bergmann <arnd@...db.de>,
        Olof Johansson <olof@...om.net>, soc@...nel.org,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-aspeed@...ts.ozlabs.org,
        Open Source Submission <patches@...erecomputing.com>
Cc:     Phong Vo <phong@...amperecomputing.com>,
        thang@...amperecomputing.com
Subject: Re: [PATCH v2 2/2] ARM: dts: aspeed: Add device tree for Ampere's Mt.
 Mitchell BMC



On 20/07/2022 17:36, Krzysztof Kozlowski wrote:
> On 20/07/2022 10:52, Quan Nguyen wrote:
>> The Mt. Mitchell BMC is an ASPEED AST2600-based BMC for the Mt. Mitchell
>> hardware reference platform with AmpereOne(TM) processor.
>>
>> Signed-off-by: Quan Nguyen <quan@...amperecomputing.com>
>> Signed-off-by: Phong Vo <phong@...amperecomputing.com>
>> Signed-off-by: Thang Q. Nguyen <thang@...amperecomputing.com>
>> ---
>> v2 :
>>    + Remove bootargs                                       [Krzysztof]
>>    + Fix gpio-keys nodes name to conform with device tree binding
>>    documents                                               [Krzysztof]
>>    + Fix some nodes to use generic name                    [Krzysztof]
>>    + Remove unnecessary blank line                         [Krzysztof]
>>    + Fix typo "LTC" to "LLC" in license info and corrected license
>>    info to GPL-2.0-only
>>
>>   arch/arm/boot/dts/Makefile                    |   1 +
>>   .../boot/dts/aspeed-bmc-ampere-mtmitchell.dts | 577 ++++++++++++++++++
>>   2 files changed, 578 insertions(+)
>>   create mode 100644 arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
>>
> 
> (...)
> 
>> +
>> +&i2c3 {
>> +	status = "okay";
>> +};
>> +
>> +&i2c4 {
>> +	status = "okay";
>> +
>> +	adc_i2c: adc-i2c@16 {
> 
> Node name: just "adc"
> 

Thanks, will fix.

>> +		compatible = "lltc,ltc2497";
>> +		reg = <0x16>;
>> +		vref-supply = <&voltage_mon_reg>;
>> +		#io-channel-cells = <1>;
>> +		status = "okay";
> 
> Isn't this new node? Why do you need status here?
> 
Thanks for the comment. The drivers/iio/adc/ltc2497.c does not check for 
the status indeed. Will remove it.

>> +	 };
>> +
>> +	eeprom@50 {
>> +		compatible = "atmel,24c64";
>> +		reg = <0x50>;
>> +		pagesize = <32>;
>> +	};
>> +
> 
> (...)
> 
>> +
>> +&gpio1 {
>> +	gpio-line-names =
>> +	/*18A0-18A7*/	"","","","","","","","",
>> +	/*18B0-18B7*/	"","","","","emmc-rst-n","","s0-soc-pgood","",
>> +	/*18C0-18C7*/	"uart1-mode0","uart1-mode1","uart2-mode0","uart2-mode1",
>> +			"uart3-mode0","uart3-mode1","uart4-mode0","uart4-mode1",
>> +	/*18D0-18D7*/	"","","","","","","","",
>> +	/*18E0-18E3*/	"","","","";
>> +};
>> +
> 
> You have a trailing line error.
> 
> 
Thanks, will fix
- Quan