Re: [RESEND PATCH 2/2] arm64: dts: rockchip: add Coresight debug range for RK3399
From: Chen-Yu Tsai <wenst@chromium.org>
Date: 2021-09-08 05:12:24
Also in:
linux-clk, linux-rockchip, lkml
On Wed, Sep 8, 2021 at 12:46 AM Brian Norris [off-list ref] wrote:
Per Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt. This IP block can be used for sampling the PC of any given CPU, which is useful in certain panic scenarios where you can't get the CPU to stop cleanly (e.g., hard lockup). Signed-off-by: Brian Norris <briannorris@chromium.org>
The datasheet isn't clear on whether the debug subsystem has a separate power domain or not, so that may bug us later. Otherwise, Reviewed-by: Chen-Yu Tsai <wenst@chromium.org> _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel