pwm: ti: am33xx: add enhanced pwm driver

Enhanced high resolution PWM module (EHRPWM) hardware can be used to generate PWM output over 2 channels. This commit adds PWM driver support for EHRPWM device present on AM33XX SOC. The code is based on the drivers/pwm/pwm-tiehrpwm.c driver of the Linux kernel version 5.9-rc7. For DT binding details see: - Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt Signed-off-by: Dario Binacchi <[email protected]>
eskalaiyarasan · Jan 12, 2021 · ade7f0d · ade7f0d
1 parent 8322fdc
commit ade7f0d
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diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
@@ -75,3 +75,10 @@ config PWM_SUNXI
 	help
 	  This PWM is found on H3, A64 and other Allwinner SoCs. It supports a
 	  programmable period and duty cycle. A 16-bit counter is used.
+
+config PWM_TI_EHRPWM
+	bool "Enable support for EHRPWM PWM"
+	depends on DM_PWM && ARCH_OMAP2PLUS
+	default y
+	help
+	  PWM driver support for the EHRPWM controller found on TI SOCs.
diff --git a/drivers/pwm/Makefile b/drivers/pwm/Makefile
@@ -19,3 +19,4 @@ obj-$(CONFIG_PWM_SANDBOX)	+= sandbox_pwm.o
 obj-$(CONFIG_PWM_SIFIVE)	+= pwm-sifive.o
 obj-$(CONFIG_PWM_TEGRA)		+= tegra_pwm.o
 obj-$(CONFIG_PWM_SUNXI)		+= sunxi_pwm.o
+obj-$(CONFIG_PWM_TI_EHRPWM)	+= pwm-ti-ehrpwm.o