linux-hardening - Re: [PATCH v1 8/8] ARM: dts: aspeed: System1: PS, sensor and more

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Message-ID: <44abff4a-0a8e-499b-8b98-a4a1680cb431@linux.ibm.com>
Date: Wed, 13 Dec 2023 13:02:06 -0600
From: Ninad Palsule <ninad@...ux.ibm.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org, joel@....id.au,
        andrew@...econstruct.com.au, peterhuewe@....de, jarkko@...nel.org,
        jgg@...pe.ca, keescook@...omium.org, tony.luck@...el.com,
        gpiccoli@...lia.com, johannes.holland@...ineon.com, linux@...ck-us.net,
        broonie@...nel.org
Cc: patrick.rudolph@...ements.com, vincent@...emblay.dev,
        peteryin.openbmc@...il.com, lakshmiy@...ibm.com, bhelgaas@...gle.com,
        naresh.solanki@...ements.com, alexander.stein@...tq-group.com,
        festevam@...x.de, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-aspeed@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, linux-integrity@...r.kernel.org,
        linux-hardening@...r.kernel.org, geissonator@...oo.com
Subject: Re: [PATCH v1 8/8] ARM: dts: aspeed: System1: PS, sensor and more

Hello Krzysztof,

On 12/12/23 14:26, Krzysztof Kozlowski wrote:
> On 12/12/2023 17:40, Ninad Palsule wrote:
>> This drop adds following devices in the device tree.
>> - EEPROM/VPD
>> - Power supplies
>> - Humidity, pressure and temperature sensors.
>> - Trusted platform module(TPM) chip
>>
>> Tested:
>>      This board is tested using the simics simulator.
>>
>> Signed-off-by: Ninad Palsule <ninad@...ux.ibm.com>
>> ---
> Don't mix DTS with drivers. DTS and drivers go via different subsystems
> and cannot have dependencies, so why DTS is patch #6, then driver #7 and
> now again DTS #7?

There is a dependency on driver code as patch #8 uses the compatibility 
string added in driver patch #7.  I have now moved driver patch at the 
start. Is that ok? OR you are suggesting something else?

v1-0001-tpm-tis-i2c-Add-more-compatible-strings.patch
                         |
v1-0009-ARM-dts-aspeed-System1-PS-sensor-and-more.patch

>
>>   .../dts/aspeed/aspeed-bmc-ibm-system1.dts     | 76 +++++++++++++++++++
>>   1 file changed, 76 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
>> index 75562aa63701..d960b938fe8d 100644
>> --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
>> +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
>> @@ -461,6 +461,11 @@ &kcs3 {
>>   &i2c0 {
>>   	status = "okay";
>>   
>> +	eeprom@50 {
>> +		compatible = "atmel,24c64";
>> +		reg = <0x50>;
>> +	};
>> +
>>   	regulator@60 {
>>   		compatible = "maxim,max8952";
>>   		reg = <0x60>;
>> @@ -655,6 +660,25 @@ pca0: pca9539@74 {
>>   
>>   &i2c2 {
>>   	status = "okay";
>> +
>> +	power-supply@58 {
>> +		compatible = "ibm,cffps";
>> +		reg = <0x58>;
>> +	};
>> +
>> +	power-supply@59 {
>> +		compatible = "ibm,cffps";
>> +		reg = <0x59>;
>> +	};
>> +
>> +	power-supply@5a {
>> +		compatible = "ibm,cffps";
>> +		reg = <0x5a>;
>> +	};
> Missing blank line

Fixed it.

Thanks for the review.

Regards,

Ninad

>
>> +	power-supply@5b {
>> +		compatible = "ibm,cffps";
>> +		reg = <0x5b>;
>> +	};
>
> Best regards,
> Krzysztof
>