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-rw-r--r--drivers/clk/tegra/clk-dfll.h6
-rw-r--r--drivers/clk/tegra/clk-tegra124-dfll-fcpu.c49
-rw-r--r--drivers/clk/tegra/cvb.c12
-rw-r--r--drivers/clk/tegra/cvb.h6
4 files changed, 59 insertions, 14 deletions
diff --git a/drivers/clk/tegra/clk-dfll.h b/drivers/clk/tegra/clk-dfll.h
index 83352c8078f2..85d0d95223f3 100644
--- a/drivers/clk/tegra/clk-dfll.h
+++ b/drivers/clk/tegra/clk-dfll.h
@@ -1,6 +1,6 @@
/*
* clk-dfll.h - prototypes and macros for the Tegra DFLL clocksource driver
- * Copyright (C) 2013 NVIDIA Corporation. All rights reserved.
+ * Copyright (C) 2013-2019 NVIDIA Corporation. All rights reserved.
*
* Aleksandr Frid <afrid@nvidia.com>
* Paul Walmsley <pwalmsley@nvidia.com>
@@ -22,11 +22,14 @@
#include <linux/reset.h>
#include <linux/types.h>
+#include "cvb.h"
+
/**
* struct tegra_dfll_soc_data - SoC-specific hooks/integration for the DFLL driver
* @dev: struct device * that holds the OPP table for the DFLL
* @max_freq: maximum frequency supported on this SoC
* @cvb: CPU frequency table for this SoC
+ * @alignment: parameters of the regulator step and offset
* @init_clock_trimmers: callback to initialize clock trimmers
* @set_clock_trimmers_high: callback to tune clock trimmers for high voltage
* @set_clock_trimmers_low: callback to tune clock trimmers for low voltage
@@ -35,6 +38,7 @@ struct tegra_dfll_soc_data {
struct device *dev;
unsigned long max_freq;
const struct cvb_table *cvb;
+ struct rail_alignment alignment;
void (*init_clock_trimmers)(void);
void (*set_clock_trimmers_high)(void);
diff --git a/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c b/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c
index 2bf6a769e5ce..92b83f50a765 100644
--- a/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c
+++ b/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c
@@ -23,6 +23,7 @@
#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"
@@ -50,9 +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 = {
@@ -105,11 +103,42 @@ static const struct of_device_id tegra124_dfll_fcpu_of_match[] = {
{ },
};
+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)
@@ -135,12 +164,22 @@ static int tegra124_dfll_fcpu_probe(struct platform_device *pdev)
return -ENODEV;
}
+ 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,
- process_id, speedo_id, speedo_value,
- soc->max_freq);
+ &align, process_id, speedo_id,
+ speedo_value, soc->max_freq);
+ soc->alignment = align;
+
if (IS_ERR(soc->cvb)) {
dev_err(&pdev->dev, "couldn't add OPP table: %ld\n",
PTR_ERR(soc->cvb));
diff --git a/drivers/clk/tegra/cvb.c b/drivers/clk/tegra/cvb.c
index da9e8e7b5ce5..35eeb6adc68e 100644
--- a/drivers/clk/tegra/cvb.c
+++ b/drivers/clk/tegra/cvb.c
@@ -1,7 +1,7 @@
/*
* Utility functions for parsing Tegra CVB voltage tables
*
- * Copyright (C) 2012-2014 NVIDIA Corporation. All rights reserved.
+ * Copyright (C) 2012-2019 NVIDIA Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -62,9 +62,9 @@ static int round_voltage(int mv, const struct rail_alignment *align, int up)
}
static int build_opp_table(struct device *dev, const struct cvb_table *table,
+ struct rail_alignment *align,
int speedo_value, unsigned long max_freq)
{
- const struct rail_alignment *align = &table->alignment;
int i, ret, dfll_mv, min_mv, max_mv;
min_mv = round_voltage(table->min_millivolts, align, UP);
@@ -109,8 +109,9 @@ static int build_opp_table(struct device *dev, const struct cvb_table *table,
*/
const struct cvb_table *
tegra_cvb_add_opp_table(struct device *dev, const struct cvb_table *tables,
- size_t count, int process_id, int speedo_id,
- int speedo_value, unsigned long max_freq)
+ size_t count, struct rail_alignment *align,
+ int process_id, int speedo_id, int speedo_value,
+ unsigned long max_freq)
{
size_t i;
int ret;
@@ -124,7 +125,8 @@ tegra_cvb_add_opp_table(struct device *dev, const struct cvb_table *tables,
if (table->process_id != -1 && table->process_id != process_id)
continue;
- ret = build_opp_table(dev, table, speedo_value, max_freq);
+ ret = build_opp_table(dev, table, align, speedo_value,
+ max_freq);
return ret ? ERR_PTR(ret) : table;
}
diff --git a/drivers/clk/tegra/cvb.h b/drivers/clk/tegra/cvb.h
index c1f077993b2a..bcf15a089b93 100644
--- a/drivers/clk/tegra/cvb.h
+++ b/drivers/clk/tegra/cvb.h
@@ -49,7 +49,6 @@ struct cvb_table {
int min_millivolts;
int max_millivolts;
- struct rail_alignment alignment;
int speedo_scale;
int voltage_scale;
@@ -59,8 +58,9 @@ struct cvb_table {
const struct cvb_table *
tegra_cvb_add_opp_table(struct device *dev, const struct cvb_table *cvb_tables,
- size_t count, int process_id, int speedo_id,
- int speedo_value, unsigned long max_freq);
+ size_t count, struct rail_alignment *align,
+ int process_id, int speedo_id, int speedo_value,
+ unsigned long max_freq);
void tegra_cvb_remove_opp_table(struct device *dev,
const struct cvb_table *table,
unsigned long max_freq);
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-21 20:29:26 +0000