| Message ID | 1462965209-6955-1-git-send-email-peter.ujfalusi@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, May 11, 2016 at 02:13:29PM +0300, Peter Ujfalusi wrote: > On some boards, like omap5-uevm the MCLK is gated by default and in order > to be able to use the High performance modes of twl6040 it need to be > enabled by SW. > Add support for handling the MCLK source clock via CCF. > At the same time lover the print priority of the notification that the 32K > clock is not proveded so it is not going to be handled by the driver. > > Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> > --- > Documentation/devicetree/bindings/mfd/twl6040.txt | 4 +-- Acked-by: Rob Herring <robh@kernel.org> > drivers/mfd/twl6040.c | 34 +++++++++++++++++------ > include/linux/mfd/twl6040.h | 3 +- > 3 files changed, 29 insertions(+), 12 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Lee, On 05/16/16 18:02, Rob Herring wrote: > On Wed, May 11, 2016 at 02:13:29PM +0300, Peter Ujfalusi wrote: >> On some boards, like omap5-uevm the MCLK is gated by default and in order >> to be able to use the High performance modes of twl6040 it need to be >> enabled by SW. >> Add support for handling the MCLK source clock via CCF. >> At the same time lover the print priority of the notification that the 32K >> clock is not proveded so it is not going to be handled by the driver. >> >> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> >> --- >> Documentation/devicetree/bindings/mfd/twl6040.txt | 4 +-- > > Acked-by: Rob Herring <robh@kernel.org> Can you take a look at this patch if it is OK to pick? >> drivers/mfd/twl6040.c | 34 +++++++++++++++++------ >> include/linux/mfd/twl6040.h | 3 +- >> 3 files changed, 29 insertions(+), 12 deletions(-) Thanks, Péter -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Tue, 07 Jun 2016, Peter Ujfalusi wrote: > Lee, > > On 05/16/16 18:02, Rob Herring wrote: > > On Wed, May 11, 2016 at 02:13:29PM +0300, Peter Ujfalusi wrote: > >> On some boards, like omap5-uevm the MCLK is gated by default and in order > >> to be able to use the High performance modes of twl6040 it need to be > >> enabled by SW. > >> Add support for handling the MCLK source clock via CCF. > >> At the same time lover the print priority of the notification that the 32K > >> clock is not proveded so it is not going to be handled by the driver. > >> > >> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> > >> --- > >> Documentation/devicetree/bindings/mfd/twl6040.txt | 4 +-- > > > > Acked-by: Rob Herring <robh@kernel.org> > > Can you take a look at this patch if it is OK to pick? Yes, when I get around to it. I currently have 75 patch review to conduct in my inbox. Some of them are quite large and complex. They will be seen to in the order they were sent, and you just bumped this patch to "sent today". ;) > >> drivers/mfd/twl6040.c | 34 +++++++++++++++++------ > >> include/linux/mfd/twl6040.h | 3 +- > >> 3 files changed, 29 insertions(+), 12 deletions(-) > > > Thanks, > Péter
On 06/07/16 12:17, Lee Jones wrote: > On Tue, 07 Jun 2016, Peter Ujfalusi wrote: > >> Lee, >> >> On 05/16/16 18:02, Rob Herring wrote: >>> On Wed, May 11, 2016 at 02:13:29PM +0300, Peter Ujfalusi wrote: >>>> On some boards, like omap5-uevm the MCLK is gated by default and in order >>>> to be able to use the High performance modes of twl6040 it need to be >>>> enabled by SW. >>>> Add support for handling the MCLK source clock via CCF. >>>> At the same time lover the print priority of the notification that the 32K >>>> clock is not proveded so it is not going to be handled by the driver. >>>> >>>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> >>>> --- >>>> Documentation/devicetree/bindings/mfd/twl6040.txt | 4 +-- >>> >>> Acked-by: Rob Herring <robh@kernel.org> >> >> Can you take a look at this patch if it is OK to pick? > > Yes, when I get around to it. > > I currently have 75 patch review to conduct in my inbox. Some of them > are quite large and complex. They will be seen to in the order they > were sent, and you just bumped this patch to "sent today". ;) I'm sorry for this. I did not intended to interfere with your workflow. I will be more patient next time, it is hard to know if I should bump the thread or resend or wait. Sorry again, Péter -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, 11 May 2016, Peter Ujfalusi wrote: > On some boards, like omap5-uevm the MCLK is gated by default and in order > to be able to use the High performance modes of twl6040 it need to be > enabled by SW. > Add support for handling the MCLK source clock via CCF. > At the same time lover the print priority of the notification that the 32K Mr Lover Lover! > clock is not proveded so it is not going to be handled by the driver. > > Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> > --- > Documentation/devicetree/bindings/mfd/twl6040.txt | 4 +-- > drivers/mfd/twl6040.c | 34 +++++++++++++++++------ > include/linux/mfd/twl6040.h | 3 +- > 3 files changed, 29 insertions(+), 12 deletions(-) > > diff --git a/Documentation/devicetree/bindings/mfd/twl6040.txt b/Documentation/devicetree/bindings/mfd/twl6040.txt > index a41157b5d930..e6afdfa3543d 100644 > --- a/Documentation/devicetree/bindings/mfd/twl6040.txt > +++ b/Documentation/devicetree/bindings/mfd/twl6040.txt > @@ -19,8 +19,8 @@ Required properties: > > Optional properties, nodes: > - enable-active-high: To power on the twl6040 during boot. > -- clocks: phandle to the clk32k clock provider > -- clock-names: Must be "clk32k" > +- clocks: phandle to the clk32k and/or to mclk clock provider > +- clock-names: Must be "clk32k" for the 32K clock and "mclk" for the MCLK. > > Vibra functionality > Required properties: > diff --git a/drivers/mfd/twl6040.c b/drivers/mfd/twl6040.c > index 852d5874aabb..f3dcf3a85e84 100644 > --- a/drivers/mfd/twl6040.c > +++ b/drivers/mfd/twl6040.c > @@ -291,7 +291,7 @@ int twl6040_power(struct twl6040 *twl6040, int on) > if (twl6040->power_count++) > goto out; > > - ret = clk_prepare_enable(twl6040->clk32k); > + ret = clk_prepare_enable(twl6040->clk32k_clk); > if (ret) { > twl6040->power_count = 0; > goto out; > @@ -304,7 +304,7 @@ int twl6040_power(struct twl6040 *twl6040, int on) > /* use automatic power-up sequence */ > ret = twl6040_power_up_automatic(twl6040); > if (ret) { > - clk_disable_unprepare(twl6040->clk32k); > + clk_disable_unprepare(twl6040->clk32k_clk); > twl6040->power_count = 0; > goto out; > } > @@ -312,7 +312,7 @@ int twl6040_power(struct twl6040 *twl6040, int on) > /* use manual power-up sequence */ > ret = twl6040_power_up_manual(twl6040); > if (ret) { > - clk_disable_unprepare(twl6040->clk32k); > + clk_disable_unprepare(twl6040->clk32k_clk); > twl6040->power_count = 0; > goto out; > } > @@ -355,7 +355,10 @@ int twl6040_power(struct twl6040 *twl6040, int on) > twl6040->sysclk = 0; > twl6040->mclk = 0; > > - clk_disable_unprepare(twl6040->clk32k); > + if (twl6040->pll == TWL6040_SYSCLK_SEL_HPPLL) > + clk_disable_unprepare(twl6040->mclk_clk); > + > + clk_disable_unprepare(twl6040->clk32k_clk); > } > > out: > @@ -427,6 +430,8 @@ int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, > ret = -EINVAL; > goto pll_out; > } > + > + clk_disable_unprepare(twl6040->mclk_clk); > break; > case TWL6040_SYSCLK_SEL_HPPLL: > /* high-performance PLL can provide only 19.2 MHz */ > @@ -468,6 +473,9 @@ int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, > goto pll_out; > } > > + /* When switching to HPPLL, enable the mclk first */ > + if (pll_id != twl6040->pll) > + clk_prepare_enable(twl6040->mclk_clk); > /* > * enable clock slicer to ensure input waveform is > * square > @@ -651,12 +659,20 @@ static int twl6040_probe(struct i2c_client *client, > > i2c_set_clientdata(client, twl6040); > > - twl6040->clk32k = devm_clk_get(&client->dev, "clk32k"); > - if (IS_ERR(twl6040->clk32k)) { > - if (PTR_ERR(twl6040->clk32k) == -EPROBE_DEFER) > + twl6040->clk32k_clk = devm_clk_get(&client->dev, "clk32k"); > + if (IS_ERR(twl6040->clk32k_clk)) { > + if (PTR_ERR(twl6040->clk32k_clk) == -EPROBE_DEFER) > + return -EPROBE_DEFER; > + dev_dbg(&client->dev, "clk32k is not handled\n"); > + twl6040->clk32k_clk = NULL; > + } > + > + twl6040->mclk_clk = devm_clk_get(&client->dev, "mclk"); > + if (IS_ERR(twl6040->mclk_clk)) { > + if (PTR_ERR(twl6040->mclk_clk) == -EPROBE_DEFER) > return -EPROBE_DEFER; > - dev_info(&client->dev, "clk32k is not handled\n"); > - twl6040->clk32k = NULL; > + dev_dbg(&client->dev, "mclk is not handled\n"); > + twl6040->mclk_clk = NULL; > } > > twl6040->supplies[0].supply = "vio"; > diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h > index 8f9fc3d26e6d..a7c50e54f3e0 100644 > --- a/include/linux/mfd/twl6040.h > +++ b/include/linux/mfd/twl6040.h > @@ -224,7 +224,8 @@ struct twl6040 { > struct regmap *regmap; > struct regmap_irq_chip_data *irq_data; > struct regulator_bulk_data supplies[2]; /* supplies for vio, v2v1 */ > - struct clk *clk32k; > + struct clk *clk32k_clk; > + struct clk *mclk_clk; Not sure I get the naming here. What's wrong with clk32k and mclk? > struct mutex mutex; > struct mutex irq_mutex; > struct mfd_cell cells[TWL6040_CELLS];
On 06/16/2016 06:16 PM, Lee Jones wrote: > On Wed, 11 May 2016, Peter Ujfalusi wrote: > >> On some boards, like omap5-uevm the MCLK is gated by default and in order >> to be able to use the High performance modes of twl6040 it need to be >> enabled by SW. >> Add support for handling the MCLK source clock via CCF. >> At the same time lover the print priority of the notification that the 32K > > Mr Lover Lover! Oh. :D >> twl6040->supplies[0].supply = "vio"; >> diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h >> index 8f9fc3d26e6d..a7c50e54f3e0 100644 >> --- a/include/linux/mfd/twl6040.h >> +++ b/include/linux/mfd/twl6040.h >> @@ -224,7 +224,8 @@ struct twl6040 { >> struct regmap *regmap; >> struct regmap_irq_chip_data *irq_data; >> struct regulator_bulk_data supplies[2]; /* supplies for vio, v2v1 */ >> - struct clk *clk32k; >> + struct clk *clk32k_clk; >> + struct clk *mclk_clk; > > Not sure I get the naming here. > > What's wrong with clk32k and mclk? The struct already have mclk (unsigned int) member to store the rate of the reference clock (32768 in case of LPPLL or the rate of the mclk clock in case of HPPLL). I could use clk32k and mclk for the clk and rename the current mclk to refclk_rate or something if that is better. This value is only important for the HPPLL usage, if I restructure the driver I might be able to rename it as mclk_rate and store only the MCLK freq there. > >> struct mutex mutex; >> struct mutex irq_mutex; >> struct mfd_cell cells[TWL6040_CELLS]; >
On Mon, 20 Jun 2016, Peter Ujfalusi wrote: > On 06/16/2016 06:16 PM, Lee Jones wrote: > > On Wed, 11 May 2016, Peter Ujfalusi wrote: > > > >> On some boards, like omap5-uevm the MCLK is gated by default and in order > >> to be able to use the High performance modes of twl6040 it need to be > >> enabled by SW. > >> Add support for handling the MCLK source clock via CCF. > >> At the same time lover the print priority of the notification that the 32K > > > > Mr Lover Lover! > > Oh. :D > > >> twl6040->supplies[0].supply = "vio"; > >> diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h > >> index 8f9fc3d26e6d..a7c50e54f3e0 100644 > >> --- a/include/linux/mfd/twl6040.h > >> +++ b/include/linux/mfd/twl6040.h > >> @@ -224,7 +224,8 @@ struct twl6040 { > >> struct regmap *regmap; > >> struct regmap_irq_chip_data *irq_data; > >> struct regulator_bulk_data supplies[2]; /* supplies for vio, v2v1 */ > >> - struct clk *clk32k; > >> + struct clk *clk32k_clk; > >> + struct clk *mclk_clk; > > > > Not sure I get the naming here. > > > > What's wrong with clk32k and mclk? > > The struct already have mclk (unsigned int) member to store the rate of the > reference clock (32768 in case of LPPLL or the rate of the mclk clock in case > of HPPLL). I could use clk32k and mclk for the clk and rename the current mclk > to refclk_rate or something if that is better. This value is only important > for the HPPLL usage, if I restructure the driver I might be able to rename it > as mclk_rate and store only the MCLK freq there. That would be less ambiguous, yes. > >> struct mutex mutex; > >> struct mutex irq_mutex; > >> struct mfd_cell cells[TWL6040_CELLS]; > > > >
diff --git a/Documentation/devicetree/bindings/mfd/twl6040.txt b/Documentation/devicetree/bindings/mfd/twl6040.txt index a41157b5d930..e6afdfa3543d 100644 --- a/Documentation/devicetree/bindings/mfd/twl6040.txt +++ b/Documentation/devicetree/bindings/mfd/twl6040.txt @@ -19,8 +19,8 @@ Required properties: Optional properties, nodes: - enable-active-high: To power on the twl6040 during boot. -- clocks: phandle to the clk32k clock provider -- clock-names: Must be "clk32k" +- clocks: phandle to the clk32k and/or to mclk clock provider +- clock-names: Must be "clk32k" for the 32K clock and "mclk" for the MCLK. Vibra functionality Required properties: diff --git a/drivers/mfd/twl6040.c b/drivers/mfd/twl6040.c index 852d5874aabb..f3dcf3a85e84 100644 --- a/drivers/mfd/twl6040.c +++ b/drivers/mfd/twl6040.c @@ -291,7 +291,7 @@ int twl6040_power(struct twl6040 *twl6040, int on) if (twl6040->power_count++) goto out; - ret = clk_prepare_enable(twl6040->clk32k); + ret = clk_prepare_enable(twl6040->clk32k_clk); if (ret) { twl6040->power_count = 0; goto out; @@ -304,7 +304,7 @@ int twl6040_power(struct twl6040 *twl6040, int on) /* use automatic power-up sequence */ ret = twl6040_power_up_automatic(twl6040); if (ret) { - clk_disable_unprepare(twl6040->clk32k); + clk_disable_unprepare(twl6040->clk32k_clk); twl6040->power_count = 0; goto out; } @@ -312,7 +312,7 @@ int twl6040_power(struct twl6040 *twl6040, int on) /* use manual power-up sequence */ ret = twl6040_power_up_manual(twl6040); if (ret) { - clk_disable_unprepare(twl6040->clk32k); + clk_disable_unprepare(twl6040->clk32k_clk); twl6040->power_count = 0; goto out; } @@ -355,7 +355,10 @@ int twl6040_power(struct twl6040 *twl6040, int on) twl6040->sysclk = 0; twl6040->mclk = 0; - clk_disable_unprepare(twl6040->clk32k); + if (twl6040->pll == TWL6040_SYSCLK_SEL_HPPLL) + clk_disable_unprepare(twl6040->mclk_clk); + + clk_disable_unprepare(twl6040->clk32k_clk); } out: @@ -427,6 +430,8 @@ int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, ret = -EINVAL; goto pll_out; } + + clk_disable_unprepare(twl6040->mclk_clk); break; case TWL6040_SYSCLK_SEL_HPPLL: /* high-performance PLL can provide only 19.2 MHz */ @@ -468,6 +473,9 @@ int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, goto pll_out; } + /* When switching to HPPLL, enable the mclk first */ + if (pll_id != twl6040->pll) + clk_prepare_enable(twl6040->mclk_clk); /* * enable clock slicer to ensure input waveform is * square @@ -651,12 +659,20 @@ static int twl6040_probe(struct i2c_client *client, i2c_set_clientdata(client, twl6040); - twl6040->clk32k = devm_clk_get(&client->dev, "clk32k"); - if (IS_ERR(twl6040->clk32k)) { - if (PTR_ERR(twl6040->clk32k) == -EPROBE_DEFER) + twl6040->clk32k_clk = devm_clk_get(&client->dev, "clk32k"); + if (IS_ERR(twl6040->clk32k_clk)) { + if (PTR_ERR(twl6040->clk32k_clk) == -EPROBE_DEFER) + return -EPROBE_DEFER; + dev_dbg(&client->dev, "clk32k is not handled\n"); + twl6040->clk32k_clk = NULL; + } + + twl6040->mclk_clk = devm_clk_get(&client->dev, "mclk"); + if (IS_ERR(twl6040->mclk_clk)) { + if (PTR_ERR(twl6040->mclk_clk) == -EPROBE_DEFER) return -EPROBE_DEFER; - dev_info(&client->dev, "clk32k is not handled\n"); - twl6040->clk32k = NULL; + dev_dbg(&client->dev, "mclk is not handled\n"); + twl6040->mclk_clk = NULL; } twl6040->supplies[0].supply = "vio"; diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index 8f9fc3d26e6d..a7c50e54f3e0 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -224,7 +224,8 @@ struct twl6040 { struct regmap *regmap; struct regmap_irq_chip_data *irq_data; struct regulator_bulk_data supplies[2]; /* supplies for vio, v2v1 */ - struct clk *clk32k; + struct clk *clk32k_clk; + struct clk *mclk_clk; struct mutex mutex; struct mutex irq_mutex; struct mfd_cell cells[TWL6040_CELLS];
On some boards, like omap5-uevm the MCLK is gated by default and in order to be able to use the High performance modes of twl6040 it need to be enabled by SW. Add support for handling the MCLK source clock via CCF. At the same time lover the print priority of the notification that the 32K clock is not proveded so it is not going to be handled by the driver. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> --- Documentation/devicetree/bindings/mfd/twl6040.txt | 4 +-- drivers/mfd/twl6040.c | 34 +++++++++++++++++------ include/linux/mfd/twl6040.h | 3 +- 3 files changed, 29 insertions(+), 12 deletions(-)