[PATCH 4/5] cpufreq: Add support for RISC-V CPU Frequency scaling drivers

[Brandon Cheo Fusi <fusibrandon13@gmail.com>]

Add Kconfig file for cpufreq scaling drivers that can handle RISC-V
CPUs. An entry is included for the Allwinner H6 cpufreq driver that
works with D1.

Signed-off-by: Brandon Cheo Fusi <fusibrandon13@gmail.com>
---
 drivers/cpufreq/Kconfig       |  4 ++++
 drivers/cpufreq/Kconfig.riscv | 16 ++++++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 drivers/cpufreq/Kconfig.riscv

diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index 35efb53d5..4bef39fed 100644
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -239,6 +239,10 @@ if PPC32 || PPC64
 source "drivers/cpufreq/Kconfig.powerpc"
 endif
 
+if RISCV
+source "drivers/cpufreq/Kconfig.riscv"
+endif
+
 if MIPS
 config BMIPS_CPUFREQ
 	tristate "BMIPS CPUfreq Driver"
diff --git a/drivers/cpufreq/Kconfig.riscv b/drivers/cpufreq/Kconfig.riscv
new file mode 100644
index 000000000..025c7c439
--- /dev/null
+++ b/drivers/cpufreq/Kconfig.riscv
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# RISC-V CPU Frequency scaling drivers
+#
+
+config ALLWINNER_SUN50I_CPUFREQ_NVMEM
+	tristate "Allwinner nvmem based SUN50I CPUFreq driver"
+	depends on ARCH_SUNXI
+	depends on NVMEM_SUNXI_SID
+	select PM_OPP
+	help
+	  This adds the nvmem based CPUFreq driver for Allwinner
+	  H6/D1 SoCs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called sun50i-cpufreq-nvmem.
\ No newline at end of file
-- 
2.30.2