diff options
| author | Suzuki K Poulose | 2017-08-02 18:22:15 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2017-08-28 16:05:49 +0200 |
| commit | ebab6a7db2c599b5c29d033f3a20f86016d9a9b8 (patch) | |
| tree | e366e6fdf34fdef7c5c530a4f96c1636ef3f85cf /drivers/hwtracing/coresight/coresight-tmc-etr.c | |
| parent | coresight tmc etr: Cleanup AXICTL register handling (diff) | |
| download | kernel-qcow2-linux-ebab6a7db2c599b5c29d033f3a20f86016d9a9b8.tar.gz kernel-qcow2-linux-ebab6a7db2c599b5c29d033f3a20f86016d9a9b8.tar.xz kernel-qcow2-linux-ebab6a7db2c599b5c29d033f3a20f86016d9a9b8.zip | |
coresight tmc etr: Setup AXI cache encoding for read transfers
If the ETR supports split cache encoding (i.e, separate bits for
read and write transfers) unlike the older version (where read
and write transfers use the same encoding in AXICTL[2-5]).
This feature is not advertised and has to be described by the
static mask associated with the device id.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-tmc-etr.c')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc-etr.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index 880b53527599..40ddcf11ae4c 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -39,6 +39,12 @@ static void tmc_etr_enable_hw(struct tmc_drvdata *drvdata) axictl &= ~TMC_AXICTL_CLEAR_MASK; axictl |= (TMC_AXICTL_PROT_CTL_B1 | TMC_AXICTL_WR_BURST_16); axictl |= TMC_AXICTL_AXCACHE_OS; + + if (tmc_etr_has_cap(drvdata, TMC_ETR_AXI_ARCACHE)) { + axictl &= ~TMC_AXICTL_ARCACHE_MASK; + axictl |= TMC_AXICTL_ARCACHE_OS; + } + writel_relaxed(axictl, drvdata->base + TMC_AXICTL); tmc_write_dba(drvdata, drvdata->paddr); |