This patch series aims to add support for Compare-Match Timer (TIM)
module found on RZ/V2M SoC.
it is composed of 32 channels and channels 0-7 and 24-32 are
reserved for ISP usage.
Channel 22 is modelled as clock source and Channel 23 is modelled as clock
event driver and the rest of the channels are modelled as counter driver
as it provides
1) counter for counting
2) configurable counter value for generating timer interrupt
3) userspace event for each interrupt.
logs:-
Counter driver:
Counter driver is tested by reading counts and interrupts tested by
counter-example in tools/counter/counter_example.c
Count snapshot value:
3114
Output from counter_example when it triggers interrupts:
Timestamp 0: 24142152969 Count 0: 5
Error Message 0: Success
Clock source:
Clock source driver is tested by clock-source-switch app.
[ 1275.703567] clocksource: Switched to clocksource arch_sys_counter
[ 1275.710189] clocksource: Switched to clocksource a4000b00.timer
[OK]
# Totals: pass[ 1275.718112] clocksource: Switched to clocksource arch_sys_counter
:0 fail:0 xfail:0 xpass:0 skip:0 error:0
# Totals: pass:0 fail:0 xfail:0 xpass:0 skip:0 error:0
Clock event:
clock event driver is tested by changing the rating as 500.
Biju Das (6):
clk: renesas: r9a09g011: Add TIM clock and reset entries
dt-bindings: timer: Add RZ/V2M TIM binding
clocksource/drivers/rzv2m-tim: Add Renesas RZ/V2M compare match
timer(TIM) driver
dt-bindings: counter: Add RZ/V2M TIM counter binding
counter: Add Renesas RZ/V2M TIM counter driver
arm64: dts: renesas: r9a09g011: Add tim nodes
.../counter/renesas,rzv2m-tim-cnt.yaml | 83 +++++
.../bindings/timer/renesas,rzv2m-tim.yaml | 83 +++++
arch/arm64/boot/dts/renesas/r9a09g011.dtsi | 192 ++++++++++
drivers/clk/renesas/r9a09g011-cpg.c | 22 ++
drivers/clocksource/Kconfig | 7 +
drivers/clocksource/Makefile | 1 +
drivers/clocksource/rzv2m-tim.c | 330 ++++++++++++++++++
drivers/counter/Kconfig | 10 +
drivers/counter/Makefile | 1 +
drivers/counter/rzv2m-tim-cnt.c | 312 +++++++++++++++++
10 files changed, 1041 insertions(+)
create mode 100644 Documentation/devicetree/bindings/counter/renesas,rzv2m-tim-cnt.yaml
create mode 100644 Documentation/devicetree/bindings/timer/renesas,rzv2m-tim.yaml
create mode 100644 drivers/clocksource/rzv2m-tim.c
create mode 100644 drivers/counter/rzv2m-tim-cnt.c
--
2.25.1
