[PATCH 0/8] arm: ep93xx: CCF conversion

[PATCH 0/8] arm: ep93xx: CCF conversion

[Nikita Shubin]

This series series of patches converts ep93xx to Common Clock Framework.

It consists of preparation patches to use clk_prepare_enable where it is 
needed, instead of clk_enable used in ep93xx drivers prior to CCF and
a patch converting mach-ep93xx/clock.c to CCF.

Link: https://lore.kernel.org/patchwork/cover/1445563/
Link: https://lore.kernel.org/patchwork/patch/1435884/

Alexander Sverdlin (7):
  iio: ep93xx: Prepare clock before using it
  spi: spi-ep93xx: Prepare clock before using it
  Input: ep93xx_keypad: Prepare clock before using it
  video: ep93xx: Prepare clock before using it
  dmaengine: ep93xx: Prepare clock before using it
  ASoC: cirrus: i2s: Prepare clock before using it
  pwm: ep93xx: Prepare clock before using it

Nikita Shubin (1):
  ep93xx: clock: convert in-place to COMMON_CLK

 arch/arm/Kconfig                       |   2 +-
 arch/arm/mach-ep93xx/clock.c           | 975 ++++++++++++++-----------
 arch/arm/mach-ep93xx/core.c            |   2 +-
 arch/arm/mach-ep93xx/soc.h             |  42 +-
 drivers/dma/ep93xx_dma.c               |   6 +-
 drivers/iio/adc/ep93xx_adc.c           |   6 +-
 drivers/input/keyboard/ep93xx_keypad.c |   4 +-
 drivers/pwm/pwm-ep93xx.c               |  12 +-
 drivers/spi/spi-ep93xx.c               |   4 +-
 drivers/video/fbdev/ep93xx-fb.c        |   4 +-
 sound/soc/cirrus/ep93xx-i2s.c          |  12 +-
 11 files changed, 605 insertions(+), 464 deletions(-)


base-commit: 64376a981a0e2e57c46efa63197c2ebb7dab35df
-- 
2.26.2

[PATCH 2/8] spi: spi-ep93xx: Prepare clock before using it

[Nikita Shubin]

From: Alexander Sverdlin <alexander.sverdlin@gmail.com>

Use clk_prepare_enable()/clk_disable_unprepare() in preparation for switch
to Common Clock Framework, otherwise the following is visible:

WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:1011 clk_core_enable+0x9c/0xbc
Enabling unprepared ep93xx-spi.0
...
Hardware name: Cirrus Logic EDB9302 Evaluation Board
...
clk_core_enable
clk_core_enable_lock
ep93xx_spi_prepare_hardware
__spi_pump_messages
__spi_sync
spi_sync
spi_sync_transfer.constprop.0
regmap_spi_write
_regmap_raw_write_impl
_regmap_bus_raw_write
_regmap_update_bits
regmap_update_bits_base
cs4271_component_probe
snd_soc_component_probe
soc_probe_component
snd_soc_bind_card
edb93xx_probe
...
spi_master spi0: failed to prepare transfer hardware: -108

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
---
 drivers/spi/spi-ep93xx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c
index aa676559d273..5896a7b2fade 100644
--- a/drivers/spi/spi-ep93xx.c
+++ b/drivers/spi/spi-ep93xx.c
@@ -550,7 +550,7 @@ static int ep93xx_spi_prepare_hardware(struct spi_master *master)
 	u32 val;
 	int ret;
 
-	ret = clk_enable(espi->clk);
+	ret = clk_prepare_enable(espi->clk);
 	if (ret)
 		return ret;
 
@@ -570,7 +570,7 @@ static int ep93xx_spi_unprepare_hardware(struct spi_master *master)
 	val &= ~SSPCR1_SSE;
 	writel(val, espi->mmio + SSPCR1);
 
-	clk_disable(espi->clk);
+	clk_disable_unprepare(espi->clk);
 
 	return 0;
 }
-- 
2.26.2

Re: [PATCH 2/8] spi: spi-ep93xx: Prepare clock before using it

[Mark Brown]

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On Mon, Jul 26, 2021 at 02:50:46PM +0300, Nikita Shubin wrote:
> spi_master spi0: failed to prepare transfer hardware: -108
> 
> Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
> ---
>  drivers/spi/spi-ep93xx.c | 4 ++--

You've not provided a Signed-off-by for this so I can't do anything with
it, please see Documentation/process/submitting-patches.rst for details
on what this is and why it's important.

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[PATCH v2 0/8] arm: ep93xx: CCF conversion

[Nikita Shubin]

This series series of patches converts ep93xx to Common Clock Framework.

It consists of preparation patches to use clk_prepare_enable where it is 
needed, instead of clk_enable used in ep93xx drivers prior to CCF and
a patch converting mach-ep93xx/clock.c to CCF.

Link: https://lore.kernel.org/patchwork/cover/1445563/
Link: https://lore.kernel.org/patchwork/patch/1435884/

v1->v2:
- added SoB

Alexander Sverdlin (7):
  iio: ep93xx: Prepare clock before using it
  spi: spi-ep93xx: Prepare clock before using it
  Input: ep93xx_keypad: Prepare clock before using it
  video: ep93xx: Prepare clock before using it
  dmaengine: ep93xx: Prepare clock before using it
  ASoC: cirrus: i2s: Prepare clock before using it
  pwm: ep93xx: Prepare clock before using it

Nikita Shubin (1):
  ep93xx: clock: convert in-place to COMMON_CLK

 arch/arm/Kconfig                       |   2 +-
 arch/arm/mach-ep93xx/clock.c           | 975 ++++++++++++++-----------
 arch/arm/mach-ep93xx/core.c            |   2 +-
 arch/arm/mach-ep93xx/soc.h             |  42 +-
 drivers/dma/ep93xx_dma.c               |   6 +-
 drivers/iio/adc/ep93xx_adc.c           |   6 +-
 drivers/input/keyboard/ep93xx_keypad.c |   4 +-
 drivers/pwm/pwm-ep93xx.c               |  12 +-
 drivers/spi/spi-ep93xx.c               |   4 +-
 drivers/video/fbdev/ep93xx-fb.c        |   4 +-
 sound/soc/cirrus/ep93xx-i2s.c          |  12 +-
 11 files changed, 605 insertions(+), 464 deletions(-)


base-commit: 64376a981a0e2e57c46efa63197c2ebb7dab35df
-- 
2.26.2

[PATCH v2 2/8] spi: spi-ep93xx: Prepare clock before using it

[Nikita Shubin]

From: Alexander Sverdlin <alexander.sverdlin@gmail.com>

Use clk_prepare_enable()/clk_disable_unprepare() in preparation for switch
to Common Clock Framework, otherwise the following is visible:

WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:1011 clk_core_enable+0x9c/0xbc
Enabling unprepared ep93xx-spi.0
...
Hardware name: Cirrus Logic EDB9302 Evaluation Board
...
clk_core_enable
clk_core_enable_lock
ep93xx_spi_prepare_hardware
__spi_pump_messages
__spi_sync
spi_sync
spi_sync_transfer.constprop.0
regmap_spi_write
_regmap_raw_write_impl
_regmap_bus_raw_write
_regmap_update_bits
regmap_update_bits_base
cs4271_component_probe
snd_soc_component_probe
soc_probe_component
snd_soc_bind_card
edb93xx_probe
...
spi_master spi0: failed to prepare transfer hardware: -108

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>
---
 drivers/spi/spi-ep93xx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c
index aa676559d273..5896a7b2fade 100644
--- a/drivers/spi/spi-ep93xx.c
+++ b/drivers/spi/spi-ep93xx.c
@@ -550,7 +550,7 @@ static int ep93xx_spi_prepare_hardware(struct spi_master *master)
 	u32 val;
 	int ret;
 
-	ret = clk_enable(espi->clk);
+	ret = clk_prepare_enable(espi->clk);
 	if (ret)
 		return ret;
 
@@ -570,7 +570,7 @@ static int ep93xx_spi_unprepare_hardware(struct spi_master *master)
 	val &= ~SSPCR1_SSE;
 	writel(val, espi->mmio + SSPCR1);
 
-	clk_disable(espi->clk);
+	clk_disable_unprepare(espi->clk);
 
 	return 0;
 }
-- 
2.26.2

Re: [PATCH v2 2/8] spi: spi-ep93xx: Prepare clock before using it

[Mark Brown]

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On Mon, Jul 26, 2021 at 04:59:50PM +0300, Nikita Shubin wrote:
> From: Alexander Sverdlin <alexander.sverdlin@gmail.com>
> 
> Use clk_prepare_enable()/clk_disable_unprepare() in preparation for switch
> to Common Clock Framework, otherwise the following is visible:

Acked-by: Mark Brown <broonie@kernel.org>

> 
> WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:1011 clk_core_enable+0x9c/0xbc
> Enabling unprepared ep93xx-spi.0
> ...
> Hardware name: Cirrus Logic EDB9302 Evaluation Board
> ...
> clk_core_enable
> clk_core_enable_lock
> ep93xx_spi_prepare_hardware

Please think hard before including complete backtraces in upstream
reports, they are very large and contain almost no useful information
relative to their size so often obscure the relevant content in your
message. If part of the backtrace is usefully illustrative (it often is
for search engines if nothing else) then it's usually better to pull out
the relevant sections.

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Re: [PATCH 0/8] arm: ep93xx: CCF conversion

[Linus Walleij]

On Mon, Jul 26, 2021 at 1:51 PM Nikita Shubin <nikita.shubin@maquefel.me> wrote:

> This series series of patches converts ep93xx to Common Clock Framework.
>
> It consists of preparation patches to use clk_prepare_enable where it is
> needed, instead of clk_enable used in ep93xx drivers prior to CCF and
> a patch converting mach-ep93xx/clock.c to CCF.
>
> Link: https://lore.kernel.org/patchwork/cover/1445563/
> Link: https://lore.kernel.org/patchwork/patch/1435884/
>
> Alexander Sverdlin (7):
>   iio: ep93xx: Prepare clock before using it
>   spi: spi-ep93xx: Prepare clock before using it
>   Input: ep93xx_keypad: Prepare clock before using it
>   video: ep93xx: Prepare clock before using it
>   dmaengine: ep93xx: Prepare clock before using it
>   ASoC: cirrus: i2s: Prepare clock before using it
>   pwm: ep93xx: Prepare clock before using it
>
> Nikita Shubin (1):
>   ep93xx: clock: convert in-place to COMMON_CLK

This series is looking very good.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

I suppose the per-subsystem patches can be picked up by
each subsystem maintainer and then you can send the "big patch"
to the SoC tree.

Yours,
Linus Walleij

Re: [PATCH v2 2/8] spi: spi-ep93xx: Prepare clock before using it

[Alexander Sverdlin]

Hello Mark,

On 26/07/2021 18:51, Mark Brown wrote:
> On Mon, Jul 26, 2021 at 04:59:50PM +0300, Nikita Shubin wrote:
>> From: Alexander Sverdlin <alexander.sverdlin@gmail.com>
>>
>> Use clk_prepare_enable()/clk_disable_unprepare() in preparation for switch
>> to Common Clock Framework, otherwise the following is visible:
> Acked-by: Mark Brown <broonie@kernel.org>

It looks like we didn't manage to bring the whole series as one lot to any
maintainer and two patches were applied to two different trees.
Could you please take this one to your tree as well?

>> WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:1011 clk_core_enable+0x9c/0xbc
>> Enabling unprepared ep93xx-spi.0
>> ...
>> Hardware name: Cirrus Logic EDB9302 Evaluation Board
>> ...
>> clk_core_enable
>> clk_core_enable_lock
>> ep93xx_spi_prepare_hardware
> Please think hard before including complete backtraces in upstream
> reports, they are very large and contain almost no useful information
> relative to their size so often obscure the relevant content in your
> message. If part of the backtrace is usefully illustrative (it often is
> for search engines if nothing else) then it's usually better to pull out
> the relevant sections.

Yes, I noted your comment first time and this was already stripped version
of the backtrace, but please feel free to strip it even harder if you
take the patch.

Thank you for the review,
--
Alex.

Re: (subset) [PATCH v2 0/8] arm: ep93xx: CCF conversion

[Mark Brown]

On Mon, 26 Jul 2021 16:59:48 +0300, Nikita Shubin wrote:
> This series series of patches converts ep93xx to Common Clock Framework.
> 
> It consists of preparation patches to use clk_prepare_enable where it is
> needed, instead of clk_enable used in ep93xx drivers prior to CCF and
> a patch converting mach-ep93xx/clock.c to CCF.
> 
> Link: https://lore.kernel.org/patchwork/cover/1445563/
> Link: https://lore.kernel.org/patchwork/patch/1435884/
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[2/8] spi: spi-ep93xx: Prepare clock before using it
      commit: 7c72dc56a631b87043e3c5838f5094db30d8c58d

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

Re: [PATCH v2 2/8] spi: spi-ep93xx: Prepare clock before using it

[Alexander Sverdlin]

Hello Mark,

On Mon, 2021-07-26 at 17:51 +0100, Mark Brown wrote:
> > From: Alexander Sverdlin <alexander.sverdlin@gmail.com>
> > 
> > Use clk_prepare_enable()/clk_disable_unprepare() in preparation for switch
> > to Common Clock Framework, otherwise the following is visible:
> 
> Acked-by: Mark Brown <broonie@kernel.org>

would you take the patch to a tree of yours, please?

-- 
Alexander Sverdlin.

Re: [PATCH v2 2/8] spi: spi-ep93xx: Prepare clock before using it

[Alexander Sverdlin]

On Mon, 2021-09-13 at 23:36 +0200, Alexander Sverdlin wrote:
> > > From: Alexander Sverdlin <alexander.sverdlin@gmail.com>
> > > 
> > > Use clk_prepare_enable()/clk_disable_unprepare() in preparation for switch
> > > to Common Clock Framework, otherwise the following is visible:
> > 
> > Acked-by: Mark Brown <broonie@kernel.org>
> 
> would you take the patch to a tree of yours, please?

Please ignore this request, I've mixed up the patches, sorry!

-- 
Alexander Sverdlin.

Re: [PATCH v2 2/8] spi: spi-ep93xx: Prepare clock before using it

[Mark Brown]

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On Mon, Sep 13, 2021 at 11:36:30PM +0200, Alexander Sverdlin wrote:
> On Mon, 2021-07-26 at 17:51 +0100, Mark Brown wrote:

> > > Use clk_prepare_enable()/clk_disable_unprepare() in preparation for switch
> > > to Common Clock Framework, otherwise the following is visible:

> > Acked-by: Mark Brown <broonie@kernel.org>

> would you take the patch to a tree of yours, please?

What's the story with the dependencies?

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