On 27/08/2025 5:20 am, Jie Gan wrote:
From: Tao Zhang <tao.zhang@xxxxxxxxxxxxxxxx>
The TPDA_SYNCR register defines the frequency at which TPDA generates
ASYNC packets, enabling userspace tools to accurately parse each valid
packet.
Signed-off-by: Tao Zhang <tao.zhang@xxxxxxxxxxxxxxxx>
Co-developed-by: Jie Gan <jie.gan@xxxxxxxxxxxxxxxx>
Signed-off-by: Jie Gan <jie.gan@xxxxxxxxxxxxxxxx>
---
drivers/hwtracing/coresight/coresight-tpda.c | 7 +++++++
drivers/hwtracing/coresight/coresight-tpda.h | 6 ++++++
2 files changed, 13 insertions(+)
diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtracing/coresight/coresight-tpda.c
index 647ab49a98d7..430f76c559f2 100644
--- a/drivers/hwtracing/coresight/coresight-tpda.c
+++ b/drivers/hwtracing/coresight/coresight-tpda.c
@@ -187,6 +187,13 @@ static void tpda_enable_pre_port(struct tpda_drvdata *drvdata)
*/
if (drvdata->trig_flag_ts)
writel_relaxed(0x0, drvdata->base + TPDA_FPID_CR);
+
+ /* Program the counter value for TPDA_SYNCR */
+ val = readl_relaxed(drvdata->base + TPDA_SYNCR);
+ /* Clear the mode */
+ val &= ~TPDA_SYNCR_MODE_CTRL;
+ val |= FIELD_PREP(TPDA_SYNCR_COUNTER_MASK, TPDA_SYNCR_MAX_COUNTER_VAL);
Just use the mask directly if you want to set all the bits. This makes
it seem like the MAX_COUNTER_VAL is something different.
val |= TPDA_SYNCR_COUNTER_MASK
+ writel_relaxed(val, drvdata->base + TPDA_SYNCR);
}
static int tpda_enable_port(struct tpda_drvdata *drvdata, int port)
diff --git a/drivers/hwtracing/coresight/coresight-tpda.h b/drivers/hwtracing/coresight/coresight-tpda.h
index 0be625fb52fd..8e1b66115ad1 100644
--- a/drivers/hwtracing/coresight/coresight-tpda.h
+++ b/drivers/hwtracing/coresight/coresight-tpda.h
@@ -9,6 +9,7 @@
#define TPDA_CR (0x000)
#define TPDA_Pn_CR(n) (0x004 + (n * 4))
#define TPDA_FPID_CR (0x084)
+#define TPDA_SYNCR (0x08C)
/* Cross trigger FREQ packets timestamp bit */
#define TPDA_CR_FREQTS BIT(2)
@@ -27,6 +28,11 @@
#define TPDA_Pn_CR_CMBSIZE GENMASK(7, 6)
/* Aggregator port DSB data set element size bit */
#define TPDA_Pn_CR_DSBSIZE BIT(8)
+/* TPDA_SYNCR mode control bit */
+#define TPDA_SYNCR_MODE_CTRL BIT(12)
+/* TPDA_SYNCR counter mask */
+#define TPDA_SYNCR_COUNTER_MASK GENMASK(11, 0)
+#define TPDA_SYNCR_MAX_COUNTER_VAL (0xFFF)
No need to define a numeric value that's the same as the mask. It also
opens the possibility of making a mistake.
#define TPDA_MAX_INPORTS 32
