drivers: entropy: sam/sam0: Update to use clock control

This update Atmel SAM trng driver to use clock control driver.

Signed-off-by: Gerson Fernando Budke <[email protected]>

Author: nandojve

drivers/entropy/entropy_sam.c

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018 Aurelien Jarno
+ * Copyright (c) 2023 Gerson Fernando Budke
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -8,6 +9,7 @@
 
 #include <zephyr/device.h>
 #include <zephyr/drivers/entropy.h>
+#include <zephyr/drivers/clock_control/atmel_sam_pmc.h>
 #include <errno.h>
 #include <zephyr/init.h>
 #include <zephyr/kernel.h>
@@ -165,8 +167,10 @@ static int entropy_sam_init(const struct device *dev)
 	/* Enable the TRNG */
 	trng->CTRLA.bit.ENABLE = 1;
 #else
-	/* Enable the user interface clock */
-	soc_pmc_peripheral_enable(DT_INST_PROP(0, peripheral_id));
+	/* Enable TRNG in PMC */
+	const struct atmel_sam_pmc_config clock_cfg = SAM_DT_INST_CLOCK_PMC_CFG(0);
+	(void)clock_control_on(SAM_DT_PMC_CONTROLLER,
+			       (clock_control_subsys_t *)&clock_cfg);
 
 	/* Enable the TRNG */
 	trng->TRNG_CR = TRNG_CR_KEY_PASSWD | TRNG_CR_ENABLE;

dts/arm/atmel/sam4l.dtsi

@@ -229,7 +229,7 @@
 			compatible = "atmel,sam-trng";
 			reg = <0x40068000 0x4000>;
 			interrupts = <73 0>;
-			peripheral-id = <17>;
+			clocks = <&pmc PMC_TYPE_PERIPHERAL 17>;
 			status = "okay";
 		};
 

dts/arm/atmel/samd5x.dtsi

@@ -279,7 +279,6 @@
 		trng: random@42002800 {
 			compatible = "atmel,sam-trng";
 			reg = <0x42002800 0x1e>;
-			peripheral-id = <0>;
 			interrupts = <131 0>;
 		};
 

dts/arm/atmel/same70.dtsi

@@ -386,7 +386,7 @@
 			compatible = "atmel,sam-trng";
 			reg = <0x40070000 0x4000>;
 			interrupts = <57 0>;
-			peripheral-id = <57>;
+			clocks = <&pmc PMC_TYPE_PERIPHERAL 57>;
 			status = "okay";
 		};
 

dts/arm/atmel/saml2x.dtsi

@@ -195,7 +195,6 @@
 		trng: random@42003800 {
 			compatible = "atmel,sam-trng";
 			reg = <0x42003800 0x24>;
-			peripheral-id = <0>;
 			interrupts = <27 0>;
 		};
 	};

dts/bindings/rng/atmel,sam-trng.yaml

@@ -13,8 +13,3 @@ properties:
 
   interrupts:
     required: true
-
-  peripheral-id:
-    type: int
-    description: peripheral ID
-    required: true