diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc | 8 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/arm/coresight.txt | 3 |
2 files changed, 10 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc index 4fe677ed1305..ab49b9ac3bcb 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc @@ -83,3 +83,11 @@ KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> Description: (R) Indicates the capabilities of the Coresight TMC. The value is read directly from the DEVID register, 0xFC8, + +What: /sys/bus/coresight/devices/<memory_map>.tmc/buffer_size +Date: December 2018 +KernelVersion: 4.19 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Size of the trace buffer for TMC-ETR when used in SYSFS + mode. Writable only for TMC-ETR configurations. The value + should be aligned to the kernel pagesize. diff --git a/Documentation/devicetree/bindings/arm/coresight.txt b/Documentation/devicetree/bindings/arm/coresight.txt index 603d3c62e8c7..9aa30a156b57 100644 --- a/Documentation/devicetree/bindings/arm/coresight.txt +++ b/Documentation/devicetree/bindings/arm/coresight.txt @@ -84,7 +84,8 @@ its hardware characteristcs. * Optional property for TMC: * arm,buffer-size: size of contiguous buffer space for TMC ETR - (embedded trace router) + (embedded trace router). This property is obsolete. The buffer size + can be configured dynamically via buffer_size property in sysfs. * arm,scatter-gather: boolean. Indicates that the TMC-ETR can safely use the SG mode on this system. |