linux-kernel - Re: [PATCHv7 5/6] coresight: etm4x: Add ETM PIDs for SDM845 and MSM8996

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Date:   Thu, 7 Feb 2019 13:26:16 -0700
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Vivek Gautam <vivek.gautam@...eaurora.org>,
        Jeffrey Hugo <jhugo@...eaurora.org>,
        Doug Anderson <dianders@...omium.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        devicetree@...r.kernel.org, Mark Rutland <mark.rutland@....com>,
        Marc Gonzalez <marc.w.gonzalez@...e.fr>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        Tingwei Zhang <tingwei@...eaurora.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCHv7 5/6] coresight: etm4x: Add ETM PIDs for SDM845 and MSM8996

On Thu, 31 Jan 2019 at 17:54, Sai Prakash Ranjan
<saiprakash.ranjan@...eaurora.org> wrote:
>
> Instead of overriding the peripheral id(PID) check in AMBA
> by hardcoding them in DT, add the PIDs to the ETM4x driver.
> Here we use Unique Component Identifier(UCI) for MSM8996
> since the ETM and CPU debug module shares the same PIDs.
> SDM845 does not support CPU debug module.
>
> Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
> Reviewed-by: Suzuki K Poulose <suzuki.poulose@....com>
>
> ---
> For testing, all dependent patches are in below tree:
>  * https://github.com/saiprakash-ranjan/linux/tree/coresight-next
>
> This patch depends on UCI support by Mike Leach in below link:
>  * https://lore.kernel.org/lkml/20190130234051.2294-1-mike.leach@linaro.org/
> ---
>  drivers/hwtracing/coresight/coresight-etm4x.c | 14 +++++++++-----
>  1 file changed, 9 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c
> index 08ce37c9475d..5819ced2beec 100644
> --- a/drivers/hwtracing/coresight/coresight-etm4x.c
> +++ b/drivers/hwtracing/coresight/coresight-etm4x.c
> @@ -1078,11 +1078,15 @@ static struct amba_cs_uci_id uci_id_etm4[] = {
>  };
>
>  static const struct amba_id etm4_ids[] = {
> -       CS_AMBA_ID(0x000bb95d),         /* Cortex-A53 */
> -       CS_AMBA_ID(0x000bb95e),         /* Cortex-A57 */
> -       CS_AMBA_ID(0x000bb95a),         /* Cortex-A72 */
> -       CS_AMBA_ID(0x000bb959),         /* Cortex-A73 */
> -       CS_AMBA_UCI_ID(0x000bb9da, uci_id_etm4),        /* Cortex-A35 */
> +       CS_AMBA_ID(0x000bb95d),                 /* Cortex-A53 */
> +       CS_AMBA_ID(0x000bb95e),                 /* Cortex-A57 */
> +       CS_AMBA_ID(0x000bb95a),                 /* Cortex-A72 */
> +       CS_AMBA_ID(0x000bb959),                 /* Cortex-A73 */
> +       CS_AMBA_UCI_ID(0x000bb9da, uci_id_etm4),/* Cortex-A35 */
> +       CS_AMBA_UCI_ID(0x000f0205, uci_id_etm4),/* Qualcomm Kryo */
> +       CS_AMBA_UCI_ID(0x000f0211, uci_id_etm4),/* Qualcomm Kryo */
> +       CS_AMBA_ID(0x000bb802),                 /* Qualcomm Kryo 385 Cortex-A55 */
> +       CS_AMBA_ID(0x000bb803),                 /* Qualcomm Kryo 385 Cortex-A75 */

I am good with this patch but there isn't much I can do with it until
Mike's patchset has been merged.  Please submit again when that has
been done.

Thanks,
Mathieu

>         {},
>  };
>
> --
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>