Sai,
On 18/01/2019 08:25, Sai Prakash Ranjan wrote:
From: Vivek Gautam <vivek.gautam@xxxxxxxxxxxxxx>
Enable coresight support by adding device nodes for the
available source, sinks and channel blocks on msm8996.
This also adds coresight cpu debug nodes.
Signed-off-by: Vivek Gautam <vivek.gautam@xxxxxxxxxxxxxx>
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@xxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/msm8996.dtsi | 447 ++++++++++++++++++++++++++
1 file changed, 447 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
index 99b7495455a6..96a16d5a258c 100644
--- a/arch/arm64/boot/dts/qcom/msm8996.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi
+
+ etr@3028000 {
+ compatible = "arm,coresight-tmc", "arm,primecell";
+ reg = <0x3028000 0x1000>;
+
+ clocks = <&rpmcc RPM_QDSS_CLK>, <&rpmcc RPM_QDSS_A_CLK>;
+ clock-names = "apb_pclk", "atclk";
If you want to use the scatter-gather mode, you must add "arm,scatter-gather"
property to the node here.
Have you tested the scatter-gather mode on the chip ? Does that work at all ?
Note: You could try this by setting a buffer_size > 1M for the ETR and use
it as a sink from the sysfs mode.
Cheers
Suzuki
