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pwm: Add Renesas RZ/G2L MTU3a PWM driver

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The RZ/G2L Multi-Function Timer Pulse Unit 3 (a.k.a MTU3a) uses
one counter and two match components to configure duty_cycle
and period to generate PWM output waveform.

Add basic support for RZ/G2L MTU3a PWM driver by creating separate
PWM channels for each IOs.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Biju Das
2023-06-02 11:11:21 +01:00
committed by Thierry Reding
parent bc13d60e4e
commit 254d3a7274
3 changed files with 563 additions and 0 deletions
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11
drivers/pwm/Kconfig
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@@ -503,6 +503,17 @@ config PWM_ROCKCHIP
Generic PWM framework driver for the PWM controller found on
Rockchip SoCs.
config PWM_RZ_MTU3
tristate "Renesas RZ/G2L MTU3a PWM Timer support"
depends on RZ_MTU3 || COMPILE_TEST
depends on HAS_IOMEM
help
This driver exposes the MTU3a PWM Timer controller found in Renesas
RZ/G2L like chips through the PWM API.
To compile this driver as a module, choose M here: the module
will be called pwm-rz-mtu3.
config PWM_SAMSUNG
tristate "Samsung PWM support"
depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST

1
drivers/pwm/Makefile
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@@ -46,6 +46,7 @@ obj-$(CONFIG_PWM_RASPBERRYPI_POE) += pwm-raspberrypi-poe.o
obj-$(CONFIG_PWM_RCAR) += pwm-rcar.o
obj-$(CONFIG_PWM_RENESAS_TPU) += pwm-renesas-tpu.o
obj-$(CONFIG_PWM_ROCKCHIP) += pwm-rockchip.o
obj-$(CONFIG_PWM_RZ_MTU3) += pwm-rz-mtu3.o
obj-$(CONFIG_PWM_SAMSUNG) += pwm-samsung.o
obj-$(CONFIG_PWM_SIFIVE) += pwm-sifive.o
obj-$(CONFIG_PWM_SL28CPLD) += pwm-sl28cpld.o

551
drivers/pwm/pwm-rz-mtu3.c Normal file
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