Commit 4aac11c9 authored by Conor Dooley's avatar Conor Dooley
Browse files

soc: microchip: add mfd drivers for two syscon regions on PolarFire SoC 



The control-scb and mss-top-sysreg regions on PolarFire SoC both fulfill
multiple purposes. The former is used for mailbox functions in addition
to the temperature & voltage sensor while the latter is used for clocks,
resets, interrupt muxing and pinctrl.

Signed-off-by: default avatarConor Dooley <conor.dooley@microchip.com>
parent feaa716a

drivers/soc/microchip/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -9,3 +9,15 @@ config POLARFIRE_SOC_SYS_CTRL 
	  module will be called mpfs_system_controller.



	  If unsure, say N.



config POLARFIRE_SOC_SYSCONS

	bool "PolarFire SoC (MPFS) syscon drivers"

	default y

	depends on ARCH_MICROCHIP

	select MFD_CORE

	help

	  These drivers add support for the syscons on PolarFire SoC (MPFS).

	  Without these drivers core parts of the kernel such as clocks

	  and resets will not function correctly.



	  If unsure, and on a PolarFire SoC, say y.

drivers/soc/microchip/Makefile

+1 −0
Original line number Diff line number Diff line 
obj-$(CONFIG_POLARFIRE_SOC_SYS_CTRL)	+= mpfs-sys-controller.o

obj-$(CONFIG_POLARFIRE_SOC_SYSCONS)	+= mpfs-control-scb.o mpfs-mss-top-sysreg.o

drivers/soc/microchip/mpfs-control-scb.c

0 → 100644
+38 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0



#include <linux/array_size.h>

#include <linux/of.h>

#include <linux/mfd/core.h>

#include <linux/mfd/syscon.h>

#include <linux/platform_device.h>



static const struct mfd_cell mpfs_control_scb_devs[] = {

	MFD_CELL_NAME("mpfs-tvs"),

};



static int mpfs_control_scb_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;



	return mfd_add_devices(dev, PLATFORM_DEVID_NONE, mpfs_control_scb_devs,

			       ARRAY_SIZE(mpfs_control_scb_devs), NULL, 0, NULL);

}



static const struct of_device_id mpfs_control_scb_of_match[] = {

	{ .compatible = "microchip,mpfs-control-scb", },

	{},

};

MODULE_DEVICE_TABLE(of, mpfs_control_scb_of_match);



static struct platform_driver mpfs_control_scb_driver = {

	.driver = {

		.name = "mpfs-control-scb",

		.of_match_table = mpfs_control_scb_of_match,

	},

	.probe = mpfs_control_scb_probe,

};

module_platform_driver(mpfs_control_scb_driver);



MODULE_LICENSE("GPL");

MODULE_AUTHOR("Conor Dooley <conor.dooley@microchip.com>");

MODULE_DESCRIPTION("PolarFire SoC control scb driver");

drivers/soc/microchip/mpfs-mss-top-sysreg.c

0 → 100644
+44 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0



#include <linux/array_size.h>

#include <linux/of.h>

#include <linux/mfd/core.h>

#include <linux/mfd/syscon.h>

#include <linux/of_platform.h>

#include <linux/platform_device.h>



static const struct mfd_cell mpfs_mss_top_sysreg_devs[] = {

	MFD_CELL_NAME("mpfs-reset"),

};



static int mpfs_mss_top_sysreg_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;

	int ret;



	ret = mfd_add_devices(dev, PLATFORM_DEVID_NONE, mpfs_mss_top_sysreg_devs,

			      ARRAY_SIZE(mpfs_mss_top_sysreg_devs) , NULL, 0, NULL);

	if (ret)

		return ret;



	return devm_of_platform_populate(dev);

}



static const struct of_device_id mpfs_mss_top_sysreg_of_match[] = {

	{ .compatible = "microchip,mpfs-mss-top-sysreg", },

	{},

};

MODULE_DEVICE_TABLE(of, mpfs_mss_top_sysreg_of_match);



static struct platform_driver mpfs_mss_top_sysreg_driver = {

	.driver = {

		.name = "mpfs-mss-top-sysreg",

		.of_match_table = mpfs_mss_top_sysreg_of_match,

	},

	.probe = mpfs_mss_top_sysreg_probe,

};

module_platform_driver(mpfs_mss_top_sysreg_driver);



MODULE_LICENSE("GPL");

MODULE_AUTHOR("Conor Dooley <conor.dooley@microchip.com>");

MODULE_DESCRIPTION("PolarFire SoC mss top sysreg driver");