linux-kernel - Re: [PATCH 3/3] arm64: dts: ti: iot2050: Add support for product generation 2 boards

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Message-ID: <37f18b9e-f640-2642-2849-ed5b61493bfa@siemens.com>
Date:   Tue, 7 Sep 2021 17:27:33 +0200
From:   Jan Kiszka <jan.kiszka@...mens.com>
To:     Nishanth Menon <nm@...com>
Cc:     Tero Kristo <kristo@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Bao Cheng Su <baocheng.su@...mens.com>,
        Chao Zeng <chao.zeng@...mens.com>
Subject: Re: [PATCH 3/3] arm64: dts: ti: iot2050: Add support for product
 generation 2 boards

On 07.09.21 17:16, Nishanth Menon wrote:
> On 16:22-20210907, Jan Kiszka wrote:
>> From: Jan Kiszka <jan.kiszka@...mens.com>
>>
>> Product Generations 1 and 2 differ in the SOC revision which requires
>> separate device trees.
>>
>> Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
>> ---
>>  arch/arm64/boot/dts/ti/Makefile               |  2 +
>>  .../dts/ti/k3-am65-iot2050-common-pg1.dtsi    | 46 ++++++++++++++++
>>  .../dts/ti/k3-am65-iot2050-common-pg2.dtsi    | 51 ++++++++++++++++++
>>  .../boot/dts/ti/k3-am65-iot2050-common.dtsi   | 35 +-----------
>>  ...ts => k3-am6528-iot2050-basic-common.dtsi} | 12 ++---
>>  .../dts/ti/k3-am6528-iot2050-basic-pg2.dts    | 21 ++++++++
>>  .../boot/dts/ti/k3-am6528-iot2050-basic.dts   | 53 ++-----------------
>>  ...=> k3-am6548-iot2050-advanced-common.dtsi} |  8 +--
>>  .../dts/ti/k3-am6548-iot2050-advanced-pg2.dts | 26 +++++++++
>>  .../dts/ti/k3-am6548-iot2050-advanced.dts     | 52 ++----------------
>>  10 files changed, 161 insertions(+), 145 deletions(-)
>>  create mode 100644 arch/arm64/boot/dts/ti/k3-am65-iot2050-common-pg1.dtsi
>>  create mode 100644 arch/arm64/boot/dts/ti/k3-am65-iot2050-common-pg2.dtsi
>>  copy arch/arm64/boot/dts/ti/{k3-am6528-iot2050-basic.dts => k3-am6528-iot2050-basic-common.dtsi} (80%)
>>  create mode 100644 arch/arm64/boot/dts/ti/k3-am6528-iot2050-basic-pg2.dts
>>  copy arch/arm64/boot/dts/ti/{k3-am6548-iot2050-advanced.dts => k3-am6548-iot2050-advanced-common.dtsi} (86%)
>>  create mode 100644 arch/arm64/boot/dts/ti/k3-am6548-iot2050-advanced-pg2.dts
> 
> 
> Few things:
> 
> a) Could you split this patch so that the refactoring for SR1 is the
>    first patch and then introduce the SR2?

Can do, sure

> b) Please call these as sr (silicon revision) rather than pg.

Nope, this is only motivated by the SR1->SR2 switch. The new products
are called "PG2", and that is what the DT name must reflect. Took me a
while to grasp that as well.

> c) usual request: Please add urls for the board

Where should they go? I think there is only one reasonable to share:

https://new.siemens.com/global/en/products/automation/pc-based/iot-gateways/simatic-iot2050.html

If that is a stable link, I can't tell.

Thanks
Jan

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Corporate Competence Center Embedded Linux