Re: [PATCH] arm64: dts: zynqmp: Add xlnx prefix to GEM compatible string

[Michal Simek <michal.simek@amd.com>]

On 12/9/22 16:11, Krzysztof Kozlowski wrote:
> On 09/12/2022 14:56, Michal Simek wrote:
>> From: Harini Katakam <harini.katakam@amd.com>
>>
>> cdns,zynq/zynqmp/versal-gem was recently deprecated in Linux in
>> favour of xlnx prefix. Add this new compatible string and retain
>> the existing string for compatibility with uboot drivers.
>>
>> Signed-off-by: Harini Katakam <harini.katakam@amd.com>
>> Signed-off-by: Michal Simek <michal.simek@amd.com>
>> ---
>>
>>   arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 8 ++++----
>>   1 file changed, 4 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
>> index 8553299f12eb..233127d94204 100644
>> --- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
>> +++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
>> @@ -507,7 +507,7 @@ nand0: nand-controller@ff100000 {
>>   		};
>>   
>>   		gem0: ethernet@ff0b0000 {
>> -			compatible = "cdns,zynqmp-gem", "cdns,gem";
>> +			compatible = "xlnx,zynqmp-gem", "cdns,zynqmp-gem", "cdns,gem";
> 
> That's not what the bindings are saying. If this was the intention of
> AMD, you should have replied to my patch that you need prolonged
> backwards compatibility.

I have sent the patch to U-Boot to support new compatible string and CC you on 
that too.

I have no problem to do switch just to xlnx one but it is not fully accurate 
that cdns,versal-gem wasn't used. True is not in Linux but it was used in U-Boot.

If we can go straight to xlnx,zynqmp-gem, cdns,gem I will send v2 of this patch.

Thanks,
Michal