linux-kernel - Re: [PATCH v12 2/2] arm64: dts: apple: add "brcm,bcm4329-fmac" fallback compatible

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Message-ID: <c5047173-d569-42d4-9676-4679100da118@wesion.com>
Date: Wed, 28 Aug 2024 14:13:04 +0800
From: Jacobe Zang <jacobe.zang@...ion.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, marcan@...can.st,
 sven@...npeter.dev, alyssa@...enzweig.io, robh@...nel.org, heiko@...ech.de,
 krzk+dt@...nel.org
Cc: linux-rockchip@...ts.infradead.org, dsimic@...jaro.org,
 conor+dt@...nel.org, asahi@...ts.linux.dev,
 linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, nick@...das.com
Subject: Re: [PATCH v12 2/2] arm64: dts: apple: add "brcm,bcm4329-fmac"
 fallback compatible



On 2024/8/28 13:56, Krzysztof Kozlowski wrote:
> On 28/08/2024 05:39, Jacobe Zang wrote:
>> Broadcom driver need to check "brcm,bcm4329-fmac" compatible. Before
> 
> What for?
> 

It matches the changes in the other series that I sent.

>> PCIe devices used PCI ID as base compabile so add it as fallback
>> compatible to pass the check.
>>
>> Signed-off-by: Jacobe Zang <jacobe.zang@...ion.com>
>> ---
>>   arch/arm64/boot/dts/apple/t8103-jxxx.dtsi | 2 +-
>>   arch/arm64/boot/dts/apple/t8112-j413.dts  | 2 +-
>>   arch/arm64/boot/dts/apple/t8112-j493.dts  | 2 +-
>>   3 files changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/apple/t8103-jxxx.dtsi b/arch/arm64/boot/dts/apple/t8103-jxxx.dtsi
>> index 5988a4eb6efaa..4b021626d4692 100644
>> --- a/arch/arm64/boot/dts/apple/t8103-jxxx.dtsi
>> +++ b/arch/arm64/boot/dts/apple/t8103-jxxx.dtsi
>> @@ -72,7 +72,7 @@ hpm1: usb-pd@3f {
>>   &port00 {
>>   	bus-range = <1 1>;
>>   	wifi0: network@0,0 {
>> -		compatible = "pci14e4,4425";
>> +		compatible = "pci14e4,4425", "brcm,bcm4329-fmac";
> 
> So devices are not compatible, but your argument is that driver needs to
> do something here? That's not enough.
> 
Before this change, the check of "brcm,bcm4329-fmac" compatible is set 
at the end of probe function for SDIO devices which need IRQ. But after 
this change I set it to the top as the first check. So I add this 
fallback compatible to the Apple's DTS.

Oh..I got what you mean. Maybe my commit message is not clearly. It is 
no need to mention driver in it. Because the intent of adding the 
"brcm,bcm4329-fmac" compatible is to conform to the bindings.

-- 
Best Regards
Jacobe