[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <c5b37e68-dc1f-cdae-83e4-23aa0216db69@linaro.org>
Date: Thu, 21 Jul 2022 09:36:53 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Rafał Miłecki <rafal@...ecki.pl>
Cc: William Zhang <william.zhang@...adcom.com>,
Linux ARM List <linux-arm-kernel@...ts.infradead.org>,
joel.peshkin@...adcom.com, dan.beygelman@...adcom.com,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Anand Gore <anand.gore@...adcom.com>,
Kursad Oney <kursad.oney@...adcom.com>,
Florian Fainelli <f.fainelli@...il.com>,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@...adcom.com>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>,
open list <linux-kernel@...r.kernel.org>
Subject: Re: [RESEND PATCH 2/9] dt-bindings: arm64: bcmbca: Update BCM4908
description
On 21/07/2022 09:13, Rafał Miłecki wrote:
>> That's better argument. But what's the benefit of adding generic
>> compatible? Devices cannot bind to it (it is too generic). Does it
>> describe the device anyhow? Imagine someone adding compatible
>> "brcm,all-soc-of-broadcom" - does it make any sense?
>
> OK, I see it now. I can't think of any case of handling all devices
> covered with suc a wide brcm,bcmbca binding.
Maybe there is some common part of a SoC which that generic compatible
would express?
Most archs don't use soc-wide generic compatible, because of reasons I
mentioned - no actual benefits for anyone from such compatible.
But there are exceptions. I fouun socfpga and apple. The apple sounds as
mistake to me, because the generic "apple,arm-platform" compatible looks
like covering all possible Apple ARM platforms. I think Apple ARM
designs in 20 years will not be compatible at all with current design,
so such broad compatible is not useful... but that's only my opinion.
>
> This leads me to another question if we should actually totally drop
> brcm,bcmbca from other SoCs bindings, see linux-next's
> Documentation/devicetree/bindings/arm/bcm/brcm,bcmbca.yaml
This would be tricky as it was already accepted, unless all sit in
linux-next and did not make to v5.19-rc1.
Best regards,
Krzysztof
Powered by blists - more mailing lists