| 481d97ba | 18-Oct-2023 |
Sascha Hauer <[email protected]> |
PM / devfreq: rockchip-dfi: add support for RK3588
Add support for the RK3588 to the driver. The RK3588 has four DDR
channels with a register stride of 0x4000 between the channel
registers, also it
PM / devfreq: rockchip-dfi: add support for RK3588
Add support for the RK3588 to the driver. The RK3588 has four DDR
channels with a register stride of 0x4000 between the channel
registers, also it has a DDRMON_CTRL register per channel.
Link: https://lore.kernel.org/all/[email protected]/
Reviewed-by: Jonathan Cameron <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Acked-by: Chanwoo Choi <[email protected]>
Acked-by: Heiko Stuebner <[email protected]>
Signed-off-by: Sascha Hauer <[email protected]>
Signed-off-by: Chanwoo Choi <[email protected]>
show more ...
|
| 4d586b57 | 19-Oct-2023 |
Sascha Hauer <[email protected]> |
PM / devfreq: rockchip-dfi: Add perf support
The DFI is a unit which is suitable for measuring DDR utilization, but
so far it could only be used as an event driver for the DDR frequency
scaling driv
PM / devfreq: rockchip-dfi: Add perf support
The DFI is a unit which is suitable for measuring DDR utilization, but
so far it could only be used as an event driver for the DDR frequency
scaling driver. This adds perf support to the DFI driver.
Usage with the 'perf' tool can look like:
perf stat -a -e rockchip_ddr/cycles/,\
rockchip_ddr/read-bytes/,\
rockchip_ddr/write-bytes/,\
rockchip_ddr/bytes/ sleep 1
Performance counter stats for 'system wide':
1582524826 rockchip_ddr/cycles/
1802.25 MB rockchip_ddr/read-bytes/
1793.72 MB rockchip_ddr/write-bytes/
3595.90 MB rockchip_ddr/bytes/
1.014369709 seconds time elapsed
perf support has been tested on a RK3568 and a RK3399, the latter with
dual channel DDR.
Link: https://lore.kernel.org/all/[email protected]/
Reviewed-by: Sebastian Reichel <[email protected]>
Acked-by: Chanwoo Choi <[email protected]>
Acked-by: Heiko Stuebner <[email protected]>
Signed-off-by: Sascha Hauer <[email protected]>
[cw00.choi: Fix typo from 'write_acccess' to 'write_access']
Signed-off-by: Chanwoo Choi <[email protected]>
show more ...
|
| 9173c5ce | 21-Mar-2019 |
Enric Balletbo i Serra <[email protected]> |
PM / devfreq: rk3399_dmc: Pass ODT and auto power down parameters to TF-A.
Trusted Firmware-A (TF-A) for rk3399 implements a SiP call to get the
on-die termination (ODT) and auto power down paramete
PM / devfreq: rk3399_dmc: Pass ODT and auto power down parameters to TF-A.
Trusted Firmware-A (TF-A) for rk3399 implements a SiP call to get the
on-die termination (ODT) and auto power down parameters from kernel,
this patch adds the functionality to do this. Also, if DDR clock
frequency is lower than the on-die termination (ODT) disable frequency
this driver should disable the DDR ODT.
Signed-off-by: Enric Balletbo i Serra <[email protected]>
Reviewed-by: Chanwoo Choi <[email protected]>
Signed-off-by: Gaël PORTAY <[email protected]>
Signed-off-by: MyungJoo Ham <[email protected]>
show more ...
|