]> git.karo-electronics.de Git - linux-beck.git/commit
ARM: dts: imx7d: add cortex-a7 coresight component
authorFrank Li <Frank.Li@freescale.com>
Tue, 30 Jun 2015 14:58:11 +0000 (22:58 +0800)
committerShawn Guo <shawnguo@kernel.org>
Tue, 11 Aug 2015 15:15:12 +0000 (23:15 +0800)
commit3adab7c796f60338f9c1c7bdbc7f24eaf39acf96
treee1de18f666cd7aac1f8af978321e0bd6fe2f9778
parent7804fbcfe5156ff7eb802c2c71f0dca74d4f7f34
ARM: dts: imx7d: add cortex-a7 coresight component

Added etm, etb, funnel and replicator

usage example:

    echo 1 >/sys/bus/coresight/devices/30086000.etr/enable_sink
    echo 1 >/sys/bus/coresight/devices/3007c000.etm/enable_source

        coresight-tmc 30086000.etr: TMC enabled
        coresight-replicator replicator.1: REPLICATOR enabled
        coresight-tmc 30084000.tmc: TMC enabled
        coresight-funnel 30083000.funnel: FUNNEL inport 0 enabled
        coresight-funnel 30041000.funnel: FUNNEL inport 0 enabled
        coresight-etm3x 3007c000.etm: ETM tracing enabled

    etm enable here.
    trace data save at /dev/30086000.etr

    cat /dev/30086000.etr > trace.data

        coresight-tmc 30086000.etr: TMC read start
        coresight-tmc 30086000.etr: TMC read end

    use ptm2human(https://github.com/hwangcc23/ptm2human) to show trace data

    ptm2human -i trace.data

Signed-off-by: Frank Li <Frank.Li@freescale.com>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
arch/arm/boot/dts/imx7d.dtsi