| Message ID | 20171213203358.20839-3-d-gerlach@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 13-12-17, 14:33, Dave Gerlach wrote: > Some platforms, like those in the DRA7 and AM57 families, require the > scaling of multiple regulators in order to properly support higher OPPs. > Let the ti-cpufreq driver determine when this is required and pass the > appropriate regulator names to the OPP core so that they can be properly > managed. > > Signed-off-by: Dave Gerlach <d-gerlach@ti.com> > --- > drivers/cpufreq/ti-cpufreq.c | 28 ++++++++++++++++++++++++---- > 1 file changed, 24 insertions(+), 4 deletions(-) > > diff --git a/drivers/cpufreq/ti-cpufreq.c b/drivers/cpufreq/ti-cpufreq.c > index b1c230a1e2aa..a099b7bf74cd 100644 > --- a/drivers/cpufreq/ti-cpufreq.c > +++ b/drivers/cpufreq/ti-cpufreq.c > @@ -51,6 +51,7 @@ struct ti_cpufreq_soc_data { > unsigned long efuse_mask; > unsigned long efuse_shift; > unsigned long rev_offset; > + bool multi_regulator; > }; > > struct ti_cpufreq_data { > @@ -58,6 +59,7 @@ struct ti_cpufreq_data { > struct device_node *opp_node; > struct regmap *syscon; > const struct ti_cpufreq_soc_data *soc_data; > + struct opp_table *opp_table; > }; > > static unsigned long amx3_efuse_xlate(struct ti_cpufreq_data *opp_data, > @@ -96,6 +98,7 @@ static struct ti_cpufreq_soc_data am3x_soc_data = { > .efuse_offset = 0x07fc, > .efuse_mask = 0x1fff, > .rev_offset = 0x600, > + .multi_regulator = false, > }; > > static struct ti_cpufreq_soc_data am4x_soc_data = { > @@ -104,6 +107,7 @@ static struct ti_cpufreq_soc_data am4x_soc_data = { > .efuse_offset = 0x0610, > .efuse_mask = 0x3f, > .rev_offset = 0x600, > + .multi_regulator = false, > }; > > static struct ti_cpufreq_soc_data dra7_soc_data = { > @@ -112,6 +116,7 @@ static struct ti_cpufreq_soc_data dra7_soc_data = { > .efuse_mask = 0xf80000, > .efuse_shift = 19, > .rev_offset = 0x204, > + .multi_regulator = true, > }; > > /** > @@ -201,7 +206,9 @@ static int ti_cpufreq_probe(struct platform_device *pdev) > u32 version[VERSION_COUNT]; > struct device_node *np; > const struct of_device_id *match; > + struct opp_table *ti_opp_table; > struct ti_cpufreq_data *opp_data; > + const char * const reg_names[] = {"vdd", "vbb"}; > int ret; > > np = of_find_node_by_path("/"); > @@ -248,16 +255,29 @@ static int ti_cpufreq_probe(struct platform_device *pdev) > if (ret) > goto fail_put_node; > > - ret = PTR_ERR_OR_ZERO(dev_pm_opp_set_supported_hw(opp_data->cpu_dev, > - version, VERSION_COUNT)); > - if (ret) { > + ti_opp_table = dev_pm_opp_set_supported_hw(opp_data->cpu_dev, > + version, VERSION_COUNT); > + if (IS_ERR(ti_opp_table)) { > dev_err(opp_data->cpu_dev, > "Failed to set supported hardware\n"); > + ret = PTR_ERR(ti_opp_table); > goto fail_put_node; > } > > - of_node_put(opp_data->opp_node); > + opp_data->opp_table = ti_opp_table; > + > + if (opp_data->soc_data->multi_regulator) { > + ti_opp_table = dev_pm_opp_set_regulators(opp_data->cpu_dev, > + reg_names, > + ARRAY_SIZE(reg_names)); > + if (IS_ERR(ti_opp_table)) { > + dev_pm_opp_put_supported_hw(opp_data->opp_table); > + ret = PTR_ERR(ti_opp_table); > + goto fail_put_node; > + } > + } > > + of_node_put(opp_data->opp_node); > register_cpufreq_dt: > platform_device_register_simple("cpufreq-dt", -1, NULL, 0); Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
diff --git a/drivers/cpufreq/ti-cpufreq.c b/drivers/cpufreq/ti-cpufreq.c index b1c230a1e2aa..a099b7bf74cd 100644 --- a/drivers/cpufreq/ti-cpufreq.c +++ b/drivers/cpufreq/ti-cpufreq.c @@ -51,6 +51,7 @@ struct ti_cpufreq_soc_data { unsigned long efuse_mask; unsigned long efuse_shift; unsigned long rev_offset; + bool multi_regulator; }; struct ti_cpufreq_data { @@ -58,6 +59,7 @@ struct ti_cpufreq_data { struct device_node *opp_node; struct regmap *syscon; const struct ti_cpufreq_soc_data *soc_data; + struct opp_table *opp_table; }; static unsigned long amx3_efuse_xlate(struct ti_cpufreq_data *opp_data, @@ -96,6 +98,7 @@ static struct ti_cpufreq_soc_data am3x_soc_data = { .efuse_offset = 0x07fc, .efuse_mask = 0x1fff, .rev_offset = 0x600, + .multi_regulator = false, }; static struct ti_cpufreq_soc_data am4x_soc_data = { @@ -104,6 +107,7 @@ static struct ti_cpufreq_soc_data am4x_soc_data = { .efuse_offset = 0x0610, .efuse_mask = 0x3f, .rev_offset = 0x600, + .multi_regulator = false, }; static struct ti_cpufreq_soc_data dra7_soc_data = { @@ -112,6 +116,7 @@ static struct ti_cpufreq_soc_data dra7_soc_data = { .efuse_mask = 0xf80000, .efuse_shift = 19, .rev_offset = 0x204, + .multi_regulator = true, }; /** @@ -201,7 +206,9 @@ static int ti_cpufreq_probe(struct platform_device *pdev) u32 version[VERSION_COUNT]; struct device_node *np; const struct of_device_id *match; + struct opp_table *ti_opp_table; struct ti_cpufreq_data *opp_data; + const char * const reg_names[] = {"vdd", "vbb"}; int ret; np = of_find_node_by_path("/"); @@ -248,16 +255,29 @@ static int ti_cpufreq_probe(struct platform_device *pdev) if (ret) goto fail_put_node; - ret = PTR_ERR_OR_ZERO(dev_pm_opp_set_supported_hw(opp_data->cpu_dev, - version, VERSION_COUNT)); - if (ret) { + ti_opp_table = dev_pm_opp_set_supported_hw(opp_data->cpu_dev, + version, VERSION_COUNT); + if (IS_ERR(ti_opp_table)) { dev_err(opp_data->cpu_dev, "Failed to set supported hardware\n"); + ret = PTR_ERR(ti_opp_table); goto fail_put_node; } - of_node_put(opp_data->opp_node); + opp_data->opp_table = ti_opp_table; + + if (opp_data->soc_data->multi_regulator) { + ti_opp_table = dev_pm_opp_set_regulators(opp_data->cpu_dev, + reg_names, + ARRAY_SIZE(reg_names)); + if (IS_ERR(ti_opp_table)) { + dev_pm_opp_put_supported_hw(opp_data->opp_table); + ret = PTR_ERR(ti_opp_table); + goto fail_put_node; + } + } + of_node_put(opp_data->opp_node); register_cpufreq_dt: platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
Some platforms, like those in the DRA7 and AM57 families, require the scaling of multiple regulators in order to properly support higher OPPs. Let the ti-cpufreq driver determine when this is required and pass the appropriate regulator names to the OPP core so that they can be properly managed. Signed-off-by: Dave Gerlach <d-gerlach@ti.com> --- drivers/cpufreq/ti-cpufreq.c | 28 ++++++++++++++++++++++++---- 1 file changed, 24 insertions(+), 4 deletions(-)