Juno platforms have a programmable replicator splitting the trace output to TPIU and ETR. Currently this is not being programmed as it is being treated as a none-programmable replicator - which is the default operational mode for these devices. The TPIU in the system is enabled by default, and this combination is causing back-pressure in the trace system resulting in overflows at the source.
Replaces the existing definition with one that defines the programmable replicator, using the "qcom,coresight-replicator1x" driver that provides the correct functionality for CoreSight programmable replicators.
Signed-off-by: Mike Leach mike.leach@linaro.org --- arch/arm64/boot/dts/arm/juno-base.dtsi | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/arch/arm64/boot/dts/arm/juno-base.dtsi b/arch/arm64/boot/dts/arm/juno-base.dtsi index 9d799d9..6546e23 100644 --- a/arch/arm64/boot/dts/arm/juno-base.dtsi +++ b/arch/arm64/boot/dts/arm/juno-base.dtsi @@ -372,12 +372,14 @@ }; };
- coresight-replicator { - /* - * Non-configurable replicators don't show up on the - * AMBA bus. As such no need to add "arm,primecell". - */ - compatible = "arm,coresight-replicator"; + coresight-replicator@20120000 { + + compatible = "qcom,coresight-replicator1x", "arm,primecell"; + reg = <0 0x20120000 0 0x1000>; + + clocks = <&soc_smc50mhz>; + clock-names = "apb_pclk"; + power-domains = <&scpi_devpd 0>;
ports { #address-cells = <1>;