[SRU][J/allwinner-5.17][PATCH v3 3/4] UBUNTU: SAUCE: PM / devfreq: Add dummy R329/D1 MBUS driver

[Emil Renner Berthing]

From: Samuel Holland <samuel at sholland.org>

BugLink: https://bugs.launchpad.net/bugs/1981074

Signed-off-by: Samuel Holland <samuel at sholland.org>
(cherry-pick from https://github.com/smaeul/linux.git riscv/d1-wip)
Signed-off-by: Emil Renner Berthing <emil.renner.berthing at canonical.com>
---
 drivers/devfreq/Kconfig            |  6 ++++++
 drivers/devfreq/Makefile           |  1 +
 drivers/devfreq/sun50i-r329-mbus.c | 27 +++++++++++++++++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 drivers/devfreq/sun50i-r329-mbus.c

diff --git a/drivers/devfreq/Kconfig b/drivers/devfreq/Kconfig
index 87eb2b837e68..2823d72dae16 100644
--- a/drivers/devfreq/Kconfig
+++ b/drivers/devfreq/Kconfig
@@ -141,6 +141,12 @@ config ARM_SUN8I_A33_MBUS_DEVFREQ
 	  This adds the DEVFREQ driver for the MBUS controller in some
 	  Allwinner sun8i (A33 through H3) and sun50i (A64 and H5) SoCs.
 
+config ARM_SUN50I_R329_MBUS_DEVFREQ
+	tristate "Allwinner R329 MBUS DEVFREQ Driver"
+	help
+	  This adds the DEVFREQ driver for the MBUS controller in some
+	  Allwinner sun20i (D1) and sun50i (R329) SoCs.
+
 source "drivers/devfreq/event/Kconfig"
 
 endif # PM_DEVFREQ
diff --git a/drivers/devfreq/Makefile b/drivers/devfreq/Makefile
index 0b6be92a25d9..017ce88f6d0b 100644
--- a/drivers/devfreq/Makefile
+++ b/drivers/devfreq/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_ARM_IMX_BUS_DEVFREQ)	+= imx-bus.o
 obj-$(CONFIG_ARM_IMX8M_DDRC_DEVFREQ)	+= imx8m-ddrc.o
 obj-$(CONFIG_ARM_RK3399_DMC_DEVFREQ)	+= rk3399_dmc.o
 obj-$(CONFIG_ARM_SUN8I_A33_MBUS_DEVFREQ)	+= sun8i-a33-mbus.o
+obj-$(CONFIG_ARM_SUN50I_R329_MBUS_DEVFREQ)	+= sun50i-r329-mbus.o
 obj-$(CONFIG_ARM_TEGRA_DEVFREQ)		+= tegra30-devfreq.o
 
 # DEVFREQ Event Drivers
diff --git a/drivers/devfreq/sun50i-r329-mbus.c b/drivers/devfreq/sun50i-r329-mbus.c
new file mode 100644
index 000000000000..983a366a1f13
--- /dev/null
+++ b/drivers/devfreq/sun50i-r329-mbus.c
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (C) 2022 Samuel Holland <samuel at sholland.org>
+//
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+static const struct of_device_id sun50i_r329_mbus_of_match[] = {
+	{ .compatible = "allwinner,sun20i-d1-mbus" },
+	{ .compatible = "allwinner,sun50i-r329-mbus" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, sun50i_r329_mbus_of_match);
+
+static struct platform_driver sun50i_r329_mbus_driver = {
+	.driver	= {
+		.name		= "sun50i-r329-mbus",
+		.of_match_table	= sun50i_r329_mbus_of_match,
+	},
+};
+module_platform_driver(sun50i_r329_mbus_driver);
+
+MODULE_AUTHOR("Samuel Holland <samuel at sholland.org>");
+MODULE_DESCRIPTION("Allwinner R329 MBUS DEVFREQ Driver");
+MODULE_LICENSE("GPL v2");
-- 
2.36.1