reset: sc5xx: Add ADI SC5XX reset controller driver

  Move the ADI ADSP-SC5XX reset controller from drivers/soc/adi/mach-sc5xx/
  to drivers/reset/ to integrate with the standard reset controller
  subsystem.

Signed-off-by: Arturs Artamonovs <Arturs.Artamonovs@analog.com>

Author: artursartamonovsadi

drivers/reset/Kconfig

@@ -231,6 +231,14 @@ config RESET_RZG2L_USBPHY_CTRL
 	  Support for USBPHY Control found on RZ/G2L family. It mainly
 	  controls reset and power down of the USB/PHY.
 
+config RESET_SC5XX
+	bool "ADI SC5XX Reset Driver"
+	depends on ARCH_SC59X_64
+	default y
+	help
+	  This enables simple reset controller for ADI ADSP-SC5xx family. 
+	  Support software reset. 
+
 config RESET_SCMI
 	tristate "Reset driver controlled via ARM SCMI interface"
 	depends on ARM_SCMI_PROTOCOL || COMPILE_TEST

drivers/reset/Makefile

@@ -31,6 +31,7 @@ obj-$(CONFIG_RESET_QCOM_AOSS) += reset-qcom-aoss.o
 obj-$(CONFIG_RESET_QCOM_PDC) += reset-qcom-pdc.o
 obj-$(CONFIG_RESET_RASPBERRYPI) += reset-raspberrypi.o
 obj-$(CONFIG_RESET_RZG2L_USBPHY_CTRL) += reset-rzg2l-usbphy-ctrl.o
+obj-$(CONFIG_RESET_SC5XX) += reset-sc5xx.o
 obj-$(CONFIG_RESET_SCMI) += reset-scmi.o
 obj-$(CONFIG_RESET_SIMPLE) += reset-simple.o
 obj-$(CONFIG_RESET_SOCFPGA) += reset-socfpga.o

drivers/soc/adi/mach-sc5xx/rcu.c drivers/reset/reset-sc5xx.cdrivers/soc/adi/mach-sc5xx/rcu.c renamed to drivers/reset/reset-sc5xx.c

@@ -1,13 +1,8 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Driver for Analog Devices Reset Control Unit
  *
- * (C) Copyright 2022 - Analog Devices, Inc.
- *
- * Written and/or maintained by Timesys Corporation
- *
- * Author: Greg Malysa <greg.malysa@timesys.com>
- * Contact: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
+ * (C) Copyright 2022-2026 - Analog Devices, Inc.
  */
 
 #include <linux/bits.h>
@@ -22,7 +17,7 @@
 #include <linux/types.h>
 
 #include <linux/soc/adi/rcu.h>
-#include "sec.h"
+#include <linux/soc/adi/sec.h>
 
 #define ADI_RCU_REBOOT_PRIORITY		255
 #define ADI_RCU_CORE_INIT_TIMEOUT	msecs_to_jiffies(2000)
@@ -51,7 +46,6 @@ void adi_rcu_writel(u32 val, struct adi_rcu *rcu, int offset)
 {
 	writel(val, rcu->ioaddr + offset);
 }
-
 EXPORT_SYMBOL(adi_rcu_writel);
 
 void adi_rcu_msg_set(struct adi_rcu *rcu, u32 bits)
@@ -114,7 +108,6 @@ int adi_rcu_check_coreid_valid(struct adi_rcu *rcu, int coreid)
 		return -EINVAL;
 	return 0;
 }
-
 EXPORT_SYMBOL(adi_rcu_check_coreid_valid);
 
 int adi_rcu_reset_core(struct adi_rcu *rcu, int coreid)
@@ -161,7 +154,6 @@ int adi_rcu_reset_core(struct adi_rcu *rcu, int coreid)
 
 	return 0;
 }
-
 EXPORT_SYMBOL(adi_rcu_reset_core);
 
 int adi_rcu_start_core(struct adi_rcu *rcu, int coreid)
@@ -180,7 +172,6 @@ int adi_rcu_start_core(struct adi_rcu *rcu, int coreid)
 
 	return 0;
 }
-
 EXPORT_SYMBOL(adi_rcu_start_core);
 
 int adi_rcu_is_core_idle(struct adi_rcu *rcu, int coreid)
@@ -192,7 +183,6 @@ int adi_rcu_is_core_idle(struct adi_rcu *rcu, int coreid)
 	return !!(adi_rcu_readl(rcu, ADI_RCU_REG_MSG) &
 		  (RCU0_MSG_C0IDLE << coreid));
 }
-
 EXPORT_SYMBOL(adi_rcu_is_core_idle);
 
 int adi_rcu_stop_core(struct adi_rcu *rcu, int coreid, int coreirq)
@@ -241,7 +231,6 @@ int adi_rcu_stop_core(struct adi_rcu *rcu, int coreid, int coreirq)
 	adi_rcu_msg_clear(rcu, RCU0_MSG_C1ACTIVATE << (coreid - 1));
 	return 0;
 }
-
 EXPORT_SYMBOL(adi_rcu_stop_core);
 
 static int adi_rcu_reboot(struct notifier_block *nb, unsigned long mode,
@@ -264,21 +253,15 @@ static int adi_rcu_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
 	struct adi_rcu *adi_rcu = NULL;
-	struct resource *res;
+	//struct resource *res;
 	void __iomem *base;
 	int ret;
 
 	adi_rcu = devm_kzalloc(dev, sizeof(*adi_rcu), GFP_KERNEL);
 	if (!adi_rcu)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(dev, "Cannot get RCU base address\n");
-		return -ENODEV;
-	}
-
-	base = devm_ioremap(dev, res->start, resource_size(res));
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base)) {
 		dev_err(dev, "Cannot map RCU base address\n");
 		return PTR_ERR(base);
@@ -323,7 +306,6 @@ static const struct of_device_id adi_rcu_match[] = {
 	{.compatible = "adi,reset-controller" },
 	{ }
 };
-
 MODULE_DEVICE_TABLE(of, adi_rcu_match);
 
 static struct platform_driver adi_rcu_driver = {

drivers/soc/adi/mach-sc5xx/Makefile

@@ -2,4 +2,4 @@
 
 # todo modularize with kconfigs
 
-obj-y := rcu.o sec.o icc.o
+obj-y := sec.o icc.o

drivers/soc/adi/mach-sc5xx/sec.c

@@ -22,7 +22,7 @@
 #include <linux/spinlock.h>
 
 #include <linux/soc/adi/rcu.h>
-#include "sec.h"
+#include <linux/soc/adi/sec.h>
 
 struct adi_sec {
 	void __iomem *ioaddr;