drivers: eth: sam: Update to use clock control

This update Atmel SAM ethernet driver to use clock control drivers.

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

Author: nandojve

drivers/ethernet/eth_sam_gmac.c

@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2016 Piotr Mienkowski
  * Copyright (c) 2018 Antmicro Ltd
+ * Copyright (c) 2023 Gerson Fernando Budke
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -43,6 +44,7 @@ LOG_MODULE_REGISTER(LOG_MODULE_NAME);
 #include <ethernet/eth_stats.h>
 #include <zephyr/drivers/i2c.h>
 #include <zephyr/drivers/pinctrl.h>
+#include <zephyr/drivers/clock_control/atmel_sam_pmc.h>
 #include <soc.h>
 #include "eth_sam_gmac_priv.h"
 
@@ -1776,8 +1778,8 @@ static int eth_initialize(const struct device *dev)
 
 #ifdef CONFIG_SOC_FAMILY_SAM
 	/* Enable GMAC module's clock */
-	soc_pmc_peripheral_enable(cfg->periph_id);
-
+	(void)clock_control_on(SAM_DT_PMC_CONTROLLER,
+			       (clock_control_subsys_t *)&cfg->clock_cfg);
 #else
 	/* Enable MCLK clock on GMAC */
 	MCLK->AHBMASK.reg |= MCLK_AHBMASK_GMAC;
@@ -2212,7 +2214,7 @@ static const struct eth_sam_dev_cfg eth0_config = {
 	.regs = (Gmac *)DT_INST_REG_ADDR(0),
 	.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(0),
 #ifdef CONFIG_SOC_FAMILY_SAM
-	.periph_id = DT_INST_PROP_OR(0, peripheral_id, 0),
+	.clock_cfg = SAM_DT_INST_CLOCK_PMC_CFG(0),
 #endif
 	.config_func = eth0_irq_config,
 #if DT_NODE_EXISTS(DT_INST_CHILD(0, phy))

drivers/ethernet/eth_sam_gmac_priv.h

@@ -261,10 +261,10 @@ struct gmac_queue {
 /* Device constant configuration parameters */
 struct eth_sam_dev_cfg {
 	Gmac *regs;
-	const struct pinctrl_dev_config *pcfg;
 #ifdef CONFIG_SOC_FAMILY_SAM
-	uint32_t periph_id;
+	const struct atmel_sam_pmc_config clock_cfg;
 #endif
+	const struct pinctrl_dev_config *pcfg;
 	void (*config_func)(void);
 	const struct device *phy_dev;
 };

dts/arm/atmel/sam4e.dtsi

@@ -141,7 +141,7 @@
 		gmac: ethernet@40034000 {
 			compatible = "atmel,sam-gmac";
 			reg = <0x40034000 0x4000>;
-			peripheral-id = <44>;
+			clocks = <&pmc PMC_TYPE_PERIPHERAL 44>;
 			interrupts = <44 0>;
 			interrupt-names = "gmac";
 			num-queues = <1>;

dts/arm/atmel/same70.dtsi

@@ -321,7 +321,7 @@
 		gmac: ethernet@40050000 {
 			compatible = "atmel,sam-gmac";
 			reg = <0x40050000 0x4000>;
-			peripheral-id = <39>;
+			clocks = <&pmc PMC_TYPE_PERIPHERAL 39>;
 			interrupts = <39 0>, <66 0>, <67 0>;
 			interrupt-names = "gmac", "q1", "q2";
 			num-queues = <3>;

dts/bindings/ethernet/atmel,sam-gmac.yaml

@@ -1,4 +1,4 @@
-# Copyright (c) 2021 Gerson Fernando Budke <[email protected]>
+# Copyright (c) 2021-2023 Gerson Fernando Budke <[email protected]>
 # SPDX-License-Identifier: Apache-2.0
 
 description: Atmel SAM-family GMAC Ethernet
@@ -8,11 +8,5 @@ compatible: "atmel,sam-gmac"
 include: atmel,gmac-common.yaml
 
 properties:
-  peripheral-id:
-    type: int
+  clocks:
     required: true
-    description: |
-      The peripheral identifier is required for Atmel SAMs MCUs to indicate
-      which is the clock line associated with a specific peripheral.  This
-      clock line is defined at Power Management Controller (PMC) and it
-      enables the peripheral.