memory-region 0: Reserved trace buffer memory
TMC ETR: When available, use this reserved memory region for trace data capture. Same region is used for trace data retention after a panic or watchdog reset.
TMC ETF: When available, use this reserved memory region for trace data retention synced from internal SRAM after a panic or watchdog reset.
memory-region 1: Reserved meta data memory
TMC ETR, ETF: When available, use this memory for register snapshot retention synced from hardware registers after a panic or watchdog reset.
Signed-off-by: Linu Cherian lcherian@marvell.com --- .../devicetree/bindings/arm/arm,coresight-tmc.yaml | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml b/Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml index cb8dceaca70e..10da9331c165 100644 --- a/Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml +++ b/Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml @@ -101,6 +101,13 @@ properties: and ETF configurations. $ref: /schemas/graph.yaml#/properties/port
+ memory-region: + items: + - description: Reserved trace buffer memory. Used for ETR and ETF + configurations. + - description: Reserved meta data memory. Used for ETR and ETF + configurations. + required: - compatible - reg @@ -115,6 +122,8 @@ examples: etr@20070000 { compatible = "arm,coresight-tmc", "arm,primecell"; reg = <0x20070000 0x1000>; + memory-region = <&etr_trace_mem_reserved>, + <&etr_mdata_mem_reserved>;
clocks = <&oscclk6a>; clock-names = "apb_pclk";