linux-kernel - Re: [PATCH v3 0/4] soc: amlogic: add new meson-gx-socinfo-sm driver

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Message-ID: <62d45d81-1366-440f-81e1-e66395707eb9@lexina.in>
Date: Thu, 14 Mar 2024 15:25:02 +0300
From: Viacheslav <adeep@...ina.in>
To: Sudeep Holla <sudeep.holla@....com>
Cc: Neil Armstrong <neil.armstrong@...aro.org>,
 Kevin Hilman <khilman@...libre.com>, Jerome Brunet <jbrunet@...libre.com>,
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-amlogic@...ts.infradead.org, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Subject: Re: [PATCH v3 0/4] soc: amlogic: add new meson-gx-socinfo-sm driver

Hi!

14/03/2024 13.40, Sudeep Holla wrote:
> On Thu, Mar 14, 2024 at 09:59:50AM +0300, Viacheslav Bocharov wrote:
>> The Amlogic Meson SoC Secure Monitor implements a call to retrieve an
>> unique SoC ID starting from the GX Family and all new families.
>> But GX-family chips (e.g. GXB, GXL and newer) supports also 128-bit
>> chip ID. 128-bit chip ID consists 32-bit SoC version and 96-bit OTP data.
>>
> 
> How old or new are these SoCs ? The reason I ask is that it is really
> sad to see vendors still creating their custom interfaces for such things
> despite the standard SMCCC interface SOC_ID introduced in SMCCC v1.2 some
> time in 2020.

Most of these SoC were created before 2020.

> 
> Hopefully they migrated to the std interface and just use the driver in
> the kernel without needing to add this every time they fancy playing
> with the interface for no reason.
> 

-- 
Best regards
Viacheslav