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Date:   Mon, 10 Aug 2020 19:01:50 +0800
From:   Qi Liu <liuqi115@...wei.com>
To:     Suzuki K Poulose <suzuki.poulose@....com>,
        <gregkh@...uxfoundation.org>, <saiprakash.ranjan@...eaurora.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>
Subject: Re: [PATCH] coresight: etm4x: Add Support for HiSilicon ETM device

Hi Suzuki,
Thanks for your review.

On 2020/8/4 18:47, Suzuki K Poulose wrote:
> Hi Qi
> 
> On 08/03/2020 02:35 PM, Qi Liu wrote:
>> Add ETMv4 periperhal ID for HiSilicon Hip08 and Hip09 platform. Hip08
>> contains ETMv4.2 device and Hip09 contains ETMv4.5 device.
> 
> Does the ETMv4.5 on your system implement system instructions to access
> the ETMs ? If so, please could you give the following series on your
> board ?
> 
> http://lists.infradead.org/pipermail/linux-arm-kernel/2020-July/587745.html
> 

ETMv4.5 on Hip09 platform does not support system instructions.
> 
>>
>> Signed-off-by: Qi Liu <liuqi115@...wei.com>
>> ---
>>   drivers/hwtracing/coresight/coresight-etm4x.c | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c
>> index 0c35cd5e..4a4f0bd 100644
>> --- a/drivers/hwtracing/coresight/coresight-etm4x.c
>> +++ b/drivers/hwtracing/coresight/coresight-etm4x.c
>> @@ -1561,6 +1561,8 @@ static struct amba_cs_uci_id uci_id_etm4[] = {
>>   };
>>
>>   static const struct amba_id etm4_ids[] = {
>> +    CS_AMBA_ID(0x000b6d02),            /* HiSilicon-Hip09 */
>> +    CS_AMBA_ID(0x000b6d01),            /* HiSilicon-Hip08 */
> 
> Please use CS_AMBA_UCI_ID() instead.
> 
> We should stop using the CS_AMBA_ID()
> 
ok, I'll fix this in next version.

Thanks,
Qi
> 
> Suzuki
> 
> .
> 

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