drivers: emios_pwm: do not configure period, duty and polarity at boot

Removing period, duty and polarity configuration from
channel devicetree. At boot time, only minimal setup like
pinctrl, prescaler, etc should be initialized. PWM signal
is produced by using pwm_set* API

Also after this change, PWM period, duty are changed at the
next counter period boundary

Signed-off-by: Dat Nguyen Duy <[email protected]>

Author: Dat-NguyenDuy

boards/nxp/mr_canhubk3/mr_canhubk3.dts

@@ -499,7 +499,6 @@
 		emios0_bus_a {
 			mode = "MCB_UP_COUNTER";
 			prescaler = <16>;
-			period = <1000>;
 			status = "okay";
 		};
 	};
@@ -513,63 +512,43 @@
 		pwm_0 {
 			channel = <0>;
 			pwm-mode = "OPWFMB";
-			period = <65535>;
-			duty-cycle = <0>;
 			prescaler = <8>;
-			polarity = "ACTIVE_HIGH";
 		};
 
 		pwm_1 {
 			channel = <1>;
 			pwm-mode = "OPWFMB";
-			period = <65535>;
-			duty-cycle = <0>;
 			prescaler = <8>;
-			polarity = "ACTIVE_HIGH";
 		};
 
 		pwm_2 {
 			channel = <2>;
 			pwm-mode = "OPWFMB";
-			period = <65535>;
-			duty-cycle = <0>;
 			prescaler = <8>;
-			polarity = "ACTIVE_HIGH";
 		};
 
 		pwm_3 {
 			channel = <3>;
 			pwm-mode = "OPWFMB";
-			period = <65535>;
-			duty-cycle = <0>;
 			prescaler = <8>;
-			polarity = "ACTIVE_HIGH";
 		};
 
 		pwm_4 {
 			channel = <4>;
 			pwm-mode = "OPWFMB";
-			period = <65535>;
-			duty-cycle = <0>;
 			prescaler = <8>;
-			polarity = "ACTIVE_HIGH";
 		};
 
 		pwm_5 {
 			channel = <5>;
 			pwm-mode = "OPWFMB";
-			period = <65535>;
-			duty-cycle = <0>;
 			prescaler = <8>;
-			polarity = "ACTIVE_HIGH";
 		};
 
 		rgb_red {
 			channel = <19>;
 			master-bus = <&emios0_bus_a>;
-			duty-cycle = <0>;
 			pwm-mode = "OPWMB";
-			polarity = "ACTIVE_LOW";
 		};
 	};
 };
@@ -586,14 +565,12 @@
 		emios1_bus_a {
 			prescaler = <16>;
 			mode = "MCB_UP_COUNTER";
-			period = <1000>;
 			status = "okay";
 		};
 
 		emios1_bus_f {
 			prescaler = <16>;
 			mode = "MCB_UP_COUNTER";
-			period = <1000>;
 			status = "okay";
 		};
 	};
@@ -606,17 +583,13 @@
 		rgb_green {
 			channel = <10>;
 			master-bus = <&emios1_bus_a>;
-			duty-cycle = <0>;
 			pwm-mode = "OPWMB";
-			polarity = "ACTIVE_LOW";
 		};
 
 		rgb_blue {
 			channel = <5>;
 			master-bus = <&emios1_bus_f>;
-			duty-cycle = <0>;
 			pwm-mode = "OPWMB";
-			polarity = "ACTIVE_LOW";
 		};
 	};
 };

drivers/misc/nxp_s32_emios/nxp_s32_emios.c

@@ -59,24 +59,17 @@ static int nxp_s32_emios_init(const struct device *dev)
 		.enableGlobalTimeBase = true							\
 	};
 
-#define NXP_S32_EMIOS_MASTER_BUS_VERIFY(node_id)						\
-	BUILD_ASSERT(IN_RANGE(DT_PROP(node_id, period),						\
-			      MIN_MASTER_BUS_PERIOD, MAX_MASTER_BUS_PERIOD),			\
-		     "Node "DT_NODE_PATH(node_id)": period is out of range");
-
 #define NXP_S32_EMIOS_MASTER_BUS_CONFIG(node_id)						\
 	{											\
 		.hwChannel = DT_PROP(node_id, channel),						\
-		.defaultPeriod = DT_PROP(node_id, period),					\
+		.defaultPeriod = MAX_MASTER_BUS_PERIOD,						\
 		.masterBusPrescaler = DT_PROP(node_id, prescaler) - 1,				\
 		.allowDebugMode = DT_PROP(node_id, freeze),					\
 		.masterMode = NXP_S32_EMIOS_MASTER_BUS_MODE(DT_STRING_TOKEN(node_id, mode)),	\
 		.masterBusAltPrescaler = 0,							\
 	},
 
 #define NXP_S32_EMIOS_GENERATE_MASTER_BUS_CONFIG(n)						\
-	DT_FOREACH_CHILD_STATUS_OKAY(DT_INST_CHILD(n, master_bus),				\
-				     NXP_S32_EMIOS_MASTER_BUS_VERIFY)				\
 	const Emios_Ip_MasterBusConfigType nxp_s32_emios_##n##_master_bus_config[] = {		\
 		DT_FOREACH_CHILD_STATUS_OKAY(DT_INST_CHILD(n, master_bus),			\
 					     NXP_S32_EMIOS_MASTER_BUS_CONFIG)			\