Merge tag 'tegra-for-5.1-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/drivers

clk: tegra: Changes for v5.1-rc1

This contains a couple of prerequisite patches to enable CPU frequency
scaling on Tegra210.

* tag 'tegra-for-5.1-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  clk: tegra: dfll: build clk-dfll.c for Tegra124 and Tegra210
  clk: tegra: dfll: add CVB tables for Tegra210
  clk: tegra: dfll: round down voltages based on alignment
  clk: tegra: dfll: support PWM regulator control
  clk: tegra: dfll: CVB calculation alignment with the regulator
  clk: tegra: dfll: registration for multiple SoCs

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 504 insertions, 16 deletions

diff --git a/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c b/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c
index edc31bb56674..4b6dd2b3767f 100644
--- a/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c
+++ b/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c
@@ -1,7 +1,7 @@
 /*
  * Tegra124 DFLL FCPU clock source driver
  *
- * Copyright (C) 2012-2014 NVIDIA Corporation.  All rights reserved.
+ * Copyright (C) 2012-2019 NVIDIA Corporation.  All rights reserved.
  *
  * Aleksandr Frid <afrid@nvidia.com>
  * Paul Walmsley <pwalmsley@nvidia.com>
@@ -21,15 +21,24 @@
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
 #include <soc/tegra/fuse.h>
 
 #include "clk.h"
 #include "clk-dfll.h"
 #include "cvb.h"
 
+struct dfll_fcpu_data {
+	const unsigned long *cpu_max_freq_table;
+	unsigned int cpu_max_freq_table_size;
+	const struct cvb_table *cpu_cvb_tables;
+	unsigned int cpu_cvb_tables_size;
+};
+
 /* Maximum CPU frequency, indexed by CPU speedo id */
-static const unsigned long cpu_max_freq_table[] = {
+static const unsigned long tegra124_cpu_max_freq_table[] = {
 	[0] = 2014500000UL,
 	[1] = 2320500000UL,
 	[2] = 2116500000UL,
@@ -42,9 +51,6 @@ static const struct cvb_table tegra124_cpu_cvb_tables[] = {
 		.process_id = -1,
 		.min_millivolts = 900,
 		.max_millivolts = 1260,
-		.alignment = {
-			.step_uv = 10000, /* 10mV */
-		},
 		.speedo_scale = 100,
 		.voltage_scale = 1000,
 		.entries = {
@@ -82,16 +88,493 @@ static const struct cvb_table tegra124_cpu_cvb_tables[] = {
 	},
 };
 
+static const unsigned long tegra210_cpu_max_freq_table[] = {
+	[0] = 1912500000UL,
+	[1] = 1912500000UL,
+	[2] = 2218500000UL,
+	[3] = 1785000000UL,
+	[4] = 1632000000UL,
+	[5] = 1912500000UL,
+	[6] = 2014500000UL,
+	[7] = 1734000000UL,
+	[8] = 1683000000UL,
+	[9] = 1555500000UL,
+	[10] = 1504500000UL,
+};
+
+#define CPU_CVB_TABLE \
+	.speedo_scale = 100,	\
+	.voltage_scale = 1000,	\
+	.entries = {		\
+		{  204000000UL,	{ 1007452, -23865, 370 } }, \
+		{  306000000UL,	{ 1052709, -24875, 370 } }, \
+		{  408000000UL,	{ 1099069, -25895, 370 } }, \
+		{  510000000UL,	{ 1146534, -26905, 370 } }, \
+		{  612000000UL,	{ 1195102, -27915, 370 } }, \
+		{  714000000UL,	{ 1244773, -28925, 370 } }, \
+		{  816000000UL,	{ 1295549, -29935, 370 } }, \
+		{  918000000UL,	{ 1347428, -30955, 370 } }, \
+		{ 1020000000UL,	{ 1400411, -31965, 370 } }, \
+		{ 1122000000UL,	{ 1454497, -32975, 370 } }, \
+		{ 1224000000UL,	{ 1509687, -33985, 370 } }, \
+		{ 1326000000UL,	{ 1565981, -35005, 370 } }, \
+		{ 1428000000UL,	{ 1623379, -36015, 370 } }, \
+		{ 1530000000UL,	{ 1681880, -37025, 370 } }, \
+		{ 1632000000UL,	{ 1741485, -38035, 370 } }, \
+		{ 1734000000UL,	{ 1802194, -39055, 370 } }, \
+		{ 1836000000UL,	{ 1864006, -40065, 370 } }, \
+		{ 1912500000UL,	{ 1910780, -40815, 370 } }, \
+		{ 2014500000UL,	{ 1227000,      0,   0 } }, \
+		{ 2218500000UL,	{ 1227000,      0,   0 } }, \
+		{          0UL,	{       0,      0,   0 } }, \
+	}
+
+#define CPU_CVB_TABLE_XA \
+	.speedo_scale = 100,	\
+	.voltage_scale = 1000,	\
+	.entries = {		\
+		{  204000000UL,	{ 1250024, -39785, 565 } }, \
+		{  306000000UL,	{ 1297556, -41145, 565 } }, \
+		{  408000000UL,	{ 1346718, -42505, 565 } }, \
+		{  510000000UL,	{ 1397511, -43855, 565 } }, \
+		{  612000000UL,	{ 1449933, -45215, 565 } }, \
+		{  714000000UL,	{ 1503986, -46575, 565 } }, \
+		{  816000000UL,	{ 1559669, -47935, 565 } }, \
+		{  918000000UL,	{ 1616982, -49295, 565 } }, \
+		{ 1020000000UL,	{ 1675926, -50645, 565 } }, \
+		{ 1122000000UL,	{ 1736500, -52005, 565 } }, \
+		{ 1224000000UL,	{ 1798704, -53365, 565 } }, \
+		{ 1326000000UL,	{ 1862538, -54725, 565 } }, \
+		{ 1428000000UL,	{ 1928003, -56085, 565 } }, \
+		{ 1530000000UL,	{ 1995097, -57435, 565 } }, \
+		{ 1606500000UL,	{ 2046149, -58445, 565 } }, \
+		{ 1632000000UL,	{ 2063822, -58795, 565 } }, \
+		{          0UL,	{       0,      0,   0 } }, \
+	}
+
+#define CPU_CVB_TABLE_EUCM1 \
+	.speedo_scale = 100,	\
+	.voltage_scale = 1000,	\
+	.entries = {		\
+		{  204000000UL,	{  734429, 0, 0 } }, \
+		{  306000000UL,	{  768191, 0, 0 } }, \
+		{  408000000UL,	{  801953, 0, 0 } }, \
+		{  510000000UL,	{  835715, 0, 0 } }, \
+		{  612000000UL,	{  869477, 0, 0 } }, \
+		{  714000000UL,	{  903239, 0, 0 } }, \
+		{  816000000UL,	{  937001, 0, 0 } }, \
+		{  918000000UL,	{  970763, 0, 0 } }, \
+		{ 1020000000UL,	{ 1004525, 0, 0 } }, \
+		{ 1122000000UL,	{ 1038287, 0, 0 } }, \
+		{ 1224000000UL,	{ 1072049, 0, 0 } }, \
+		{ 1326000000UL,	{ 1105811, 0, 0 } }, \
+		{ 1428000000UL,	{ 1130000, 0, 0 } }, \
+		{ 1555500000UL,	{ 1130000, 0, 0 } }, \
+		{ 1632000000UL,	{ 1170000, 0, 0 } }, \
+		{ 1734000000UL,	{ 1227500, 0, 0 } }, \
+		{          0UL,	{       0, 0, 0 } }, \
+	}
+
+#define CPU_CVB_TABLE_EUCM2 \
+	.speedo_scale = 100,	\
+	.voltage_scale = 1000,	\
+	.entries = {		\
+		{  204000000UL,	{  742283, 0, 0 } }, \
+		{  306000000UL,	{  776249, 0, 0 } }, \
+		{  408000000UL,	{  810215, 0, 0 } }, \
+		{  510000000UL,	{  844181, 0, 0 } }, \
+		{  612000000UL,	{  878147, 0, 0 } }, \
+		{  714000000UL,	{  912113, 0, 0 } }, \
+		{  816000000UL,	{  946079, 0, 0 } }, \
+		{  918000000UL,	{  980045, 0, 0 } }, \
+		{ 1020000000UL,	{ 1014011, 0, 0 } }, \
+		{ 1122000000UL,	{ 1047977, 0, 0 } }, \
+		{ 1224000000UL,	{ 1081943, 0, 0 } }, \
+		{ 1326000000UL,	{ 1090000, 0, 0 } }, \
+		{ 1479000000UL,	{ 1090000, 0, 0 } }, \
+		{ 1555500000UL,	{ 1162000, 0, 0 } }, \
+		{ 1683000000UL,	{ 1195000, 0, 0 } }, \
+		{          0UL,	{       0, 0, 0 } }, \
+	}
+
+#define CPU_CVB_TABLE_EUCM2_JOINT_RAIL \
+	.speedo_scale = 100,	\
+	.voltage_scale = 1000,	\
+	.entries = {		\
+		{  204000000UL,	{  742283, 0, 0 } }, \
+		{  306000000UL,	{  776249, 0, 0 } }, \
+		{  408000000UL,	{  810215, 0, 0 } }, \
+		{  510000000UL,	{  844181, 0, 0 } }, \
+		{  612000000UL,	{  878147, 0, 0 } }, \
+		{  714000000UL,	{  912113, 0, 0 } }, \
+		{  816000000UL,	{  946079, 0, 0 } }, \
+		{  918000000UL,	{  980045, 0, 0 } }, \
+		{ 1020000000UL,	{ 1014011, 0, 0 } }, \
+		{ 1122000000UL,	{ 1047977, 0, 0 } }, \
+		{ 1224000000UL,	{ 1081943, 0, 0 } }, \
+		{ 1326000000UL,	{ 1090000, 0, 0 } }, \
+		{ 1479000000UL,	{ 1090000, 0, 0 } }, \
+		{ 1504500000UL,	{ 1120000, 0, 0 } }, \
+		{          0UL,	{       0, 0, 0 } }, \
+	}
+
+#define CPU_CVB_TABLE_ODN \
+	.speedo_scale = 100,	\
+	.voltage_scale = 1000,	\
+	.entries = {		\
+		{  204000000UL,	{  721094, 0, 0 } }, \
+		{  306000000UL,	{  754040, 0, 0 } }, \
+		{  408000000UL,	{  786986, 0, 0 } }, \
+		{  510000000UL,	{  819932, 0, 0 } }, \
+		{  612000000UL,	{  852878, 0, 0 } }, \
+		{  714000000UL,	{  885824, 0, 0 } }, \
+		{  816000000UL,	{  918770, 0, 0 } }, \
+		{  918000000UL,	{  915716, 0, 0 } }, \
+		{ 1020000000UL,	{  984662, 0, 0 } }, \
+		{ 1122000000UL,	{ 1017608, 0, 0 } }, \
+		{ 1224000000UL,	{ 1050554, 0, 0 } }, \
+		{ 1326000000UL,	{ 1083500, 0, 0 } }, \
+		{ 1428000000UL,	{ 1116446, 0, 0 } }, \
+		{ 1581000000UL,	{ 1130000, 0, 0 } }, \
+		{ 1683000000UL,	{ 1168000, 0, 0 } }, \
+		{ 1785000000UL,	{ 1227500, 0, 0 } }, \
+		{          0UL,	{       0, 0, 0 } }, \
+	}
+
+struct cvb_table tegra210_cpu_cvb_tables[] = {
+	{
+		.speedo_id = 10,
+		.process_id = 0,
+		.min_millivolts = 840,
+		.max_millivolts = 1120,
+		CPU_CVB_TABLE_EUCM2_JOINT_RAIL,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 10,
+		.process_id = 1,
+		.min_millivolts = 840,
+		.max_millivolts = 1120,
+		CPU_CVB_TABLE_EUCM2_JOINT_RAIL,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 9,
+		.process_id = 0,
+		.min_millivolts = 900,
+		.max_millivolts = 1162,
+		CPU_CVB_TABLE_EUCM2,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+		}
+	},
+	{
+		.speedo_id = 9,
+		.process_id = 1,
+		.min_millivolts = 900,
+		.max_millivolts = 1162,
+		CPU_CVB_TABLE_EUCM2,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+		}
+	},
+	{
+		.speedo_id = 8,
+		.process_id = 0,
+		.min_millivolts = 900,
+		.max_millivolts = 1195,
+		CPU_CVB_TABLE_EUCM2,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+		}
+	},
+	{
+		.speedo_id = 8,
+		.process_id = 1,
+		.min_millivolts = 900,
+		.max_millivolts = 1195,
+		CPU_CVB_TABLE_EUCM2,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+		}
+	},
+	{
+		.speedo_id = 7,
+		.process_id = 0,
+		.min_millivolts = 841,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE_EUCM1,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 7,
+		.process_id = 1,
+		.min_millivolts = 841,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE_EUCM1,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 6,
+		.process_id = 0,
+		.min_millivolts = 870,
+		.max_millivolts = 1150,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune1 = 0x20091d9,
+		}
+	},
+	{
+		.speedo_id = 6,
+		.process_id = 1,
+		.min_millivolts = 870,
+		.max_millivolts = 1150,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune1 = 0x25501d0,
+		}
+	},
+	{
+		.speedo_id = 5,
+		.process_id = 0,
+		.min_millivolts = 818,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 5,
+		.process_id = 1,
+		.min_millivolts = 818,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x25501d0,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 4,
+		.process_id = -1,
+		.min_millivolts = 918,
+		.max_millivolts = 1113,
+		CPU_CVB_TABLE_XA,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune1 = 0x17711BD,
+		}
+	},
+	{
+		.speedo_id = 3,
+		.process_id = 0,
+		.min_millivolts = 825,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE_ODN,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 3,
+		.process_id = 1,
+		.min_millivolts = 825,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE_ODN,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x25501d0,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 2,
+		.process_id = 0,
+		.min_millivolts = 870,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune1 = 0x20091d9,
+		}
+	},
+	{
+		.speedo_id = 2,
+		.process_id = 1,
+		.min_millivolts = 870,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune1 = 0x25501d0,
+		}
+	},
+	{
+		.speedo_id = 1,
+		.process_id = 0,
+		.min_millivolts = 837,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 1,
+		.process_id = 1,
+		.min_millivolts = 837,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x25501d0,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 0,
+		.process_id = 0,
+		.min_millivolts = 850,
+		.max_millivolts = 1170,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 0,
+		.process_id = 1,
+		.min_millivolts = 850,
+		.max_millivolts = 1170,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x25501d0,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+};
+
+static const struct dfll_fcpu_data tegra124_dfll_fcpu_data = {
+	.cpu_max_freq_table = tegra124_cpu_max_freq_table,
+	.cpu_max_freq_table_size = ARRAY_SIZE(tegra124_cpu_max_freq_table),
+	.cpu_cvb_tables = tegra124_cpu_cvb_tables,
+	.cpu_cvb_tables_size = ARRAY_SIZE(tegra124_cpu_cvb_tables)
+};
+
+static const struct dfll_fcpu_data tegra210_dfll_fcpu_data = {
+	.cpu_max_freq_table = tegra210_cpu_max_freq_table,
+	.cpu_max_freq_table_size = ARRAY_SIZE(tegra210_cpu_max_freq_table),
+	.cpu_cvb_tables = tegra210_cpu_cvb_tables,
+	.cpu_cvb_tables_size = ARRAY_SIZE(tegra210_cpu_cvb_tables),
+};
+
+static const struct of_device_id tegra124_dfll_fcpu_of_match[] = {
+	{
+		.compatible = "nvidia,tegra124-dfll",
+		.data = &tegra124_dfll_fcpu_data,
+	},
+	{
+		.compatible = "nvidia,tegra210-dfll",
+		.data = &tegra210_dfll_fcpu_data
+	},
+	{ },
+};
+
+static void get_alignment_from_dt(struct device *dev,
+				  struct rail_alignment *align)
+{
+	if (of_property_read_u32(dev->of_node,
+				 "nvidia,pwm-voltage-step-microvolts",
+				 &align->step_uv))
+		align->step_uv = 0;
+
+	if (of_property_read_u32(dev->of_node,
+				 "nvidia,pwm-min-microvolts",
+				 &align->offset_uv))
+		align->offset_uv = 0;
+}
+
+static int get_alignment_from_regulator(struct device *dev,
+					 struct rail_alignment *align)
+{
+	struct regulator *reg = devm_regulator_get(dev, "vdd-cpu");
+
+	if (IS_ERR(reg))
+		return PTR_ERR(reg);
+
+	align->offset_uv = regulator_list_voltage(reg, 0);
+	align->step_uv = regulator_get_linear_step(reg);
+
+	devm_regulator_put(reg);
+
+	return 0;
+}
+
 static int tegra124_dfll_fcpu_probe(struct platform_device *pdev)
 {
 	int process_id, speedo_id, speedo_value, err;
 	struct tegra_dfll_soc_data *soc;
+	const struct dfll_fcpu_data *fcpu_data;
+	struct rail_alignment align;
+
+	fcpu_data = of_device_get_match_data(&pdev->dev);
+	if (!fcpu_data)
+		return -ENODEV;
 
 	process_id = tegra_sku_info.cpu_process_id;
 	speedo_id = tegra_sku_info.cpu_speedo_id;
 	speedo_value = tegra_sku_info.cpu_speedo_value;
 
-	if (speedo_id >= ARRAY_SIZE(cpu_max_freq_table)) {
+	if (speedo_id >= fcpu_data->cpu_max_freq_table_size) {
 		dev_err(&pdev->dev, "unknown max CPU freq for speedo_id=%d\n",
 			speedo_id);
 		return -ENODEV;
@@ -107,12 +590,22 @@ static int tegra124_dfll_fcpu_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	soc->max_freq = cpu_max_freq_table[speedo_id];
+	if (of_property_read_bool(pdev->dev.of_node, "nvidia,pwm-to-pmic")) {
+		get_alignment_from_dt(&pdev->dev, &align);
+	} else {
+		err = get_alignment_from_regulator(&pdev->dev, &align);
+		if (err)
+			return err;
+	}
+
+	soc->max_freq = fcpu_data->cpu_max_freq_table[speedo_id];
+
+	soc->cvb = tegra_cvb_add_opp_table(soc->dev, fcpu_data->cpu_cvb_tables,
+					   fcpu_data->cpu_cvb_tables_size,
+					   &align, process_id, speedo_id,
+					   speedo_value, soc->max_freq);
+	soc->alignment = align;
 
-	soc->cvb = tegra_cvb_add_opp_table(soc->dev, tegra124_cpu_cvb_tables,
-					   ARRAY_SIZE(tegra124_cpu_cvb_tables),
-					   process_id, speedo_id, speedo_value,
-					   soc->max_freq);
 	if (IS_ERR(soc->cvb)) {
 		dev_err(&pdev->dev, "couldn't add OPP table: %ld\n",
 			PTR_ERR(soc->cvb));
@@ -144,11 +637,6 @@ static int tegra124_dfll_fcpu_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static const struct of_device_id tegra124_dfll_fcpu_of_match[] = {
-	{ .compatible = "nvidia,tegra124-dfll", },
-	{ },
-};
-
 static const struct dev_pm_ops tegra124_dfll_pm_ops = {
 	SET_RUNTIME_PM_OPS(tegra_dfll_runtime_suspend,
 			   tegra_dfll_runtime_resume, NULL)