On 16/11/2022 01:31, Jiucheng Xu wrote:
This patch adds support Amlogic meson G12 series SoC
DDR bandwidth PMU driver framework and interfaces.
The PMU not only can monitor the total DDR bandwidth,
but also the bandwidth which is from individual IP module.
Example usage:
$ perf stat -a -e meson_ddr_bw/total_rw_bytes/ -I 1000 sleep 10
- or -
$ perf stat -a -e \
meson_ddr_bw/total_rw_bytes/,\
meson_ddr_bw/chan_1_rw_bytes,arm=1/ -I 1000 \
sleep 10
g12 SoC support 4 channels to monitor DDR bandwidth
simultaneously. Each channel can monitor up to 4 IP modules
simultaneously.
For Instance, If you want to get the sum of DDR bandwidth
from CPU, GPU, USB3.0 and VDEC. You can use the following
command parameters to display.
$ perf stat -a -e \
meson_ddr_bw/chan_2_rw_bytes,arm=1,gpu=1,usb3_0=1,nna=1/ -I 1000 \
sleep 10
Other events are supported, and advertised via perf list.
Signed-off-by: Jiucheng Xu <jiucheng.xu@xxxxxxxxxxx>
Tested-by: Chris Healy <healych@xxxxxxxxx>
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Why did you drop the bindings patch ?
I only applied the DT patch.
Neil
