<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux.git/drivers/pinctrl, branch v4.12-rc2</title>
<subtitle>Linux kernel source tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/'/>
<entry>
<title>Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial</title>
<updated>2017-05-03T02:09:35+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2017-05-03T02:09:35+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=89c9fea3c8034cdb2fd745f551cde0b507fd6893'/>
<id>89c9fea3c8034cdb2fd745f551cde0b507fd6893</id>
<content type='text'>
Pull trivial tree updates from Jiri Kosina.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial:
  tty: fix comment for __tty_alloc_driver()
  init/main: properly align the multi-line comment
  init/main: Fix double "the" in comment
  Fix dead URLs to ftp.kernel.org
  drivers: Clean up duplicated email address
  treewide: Fix typo in xml/driver-api/basics.xml
  tools/testing/selftests/powerpc: remove redundant CFLAGS in Makefile: "-Wall -O2 -Wall" -&gt; "-O2 -Wall"
  selftests/timers: Spelling s/privledges/privileges/
  HID: picoLCD: Spelling s/REPORT_WRTIE_MEMORY/REPORT_WRITE_MEMORY/
  net: phy: dp83848: Fix Typo
  UBI: Fix typos
  Documentation: ftrace.txt: Correct nice value of 120 priority
  net: fec: Fix typo in error msg and comment
  treewide: Fix typos in printk
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull trivial tree updates from Jiri Kosina.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial:
  tty: fix comment for __tty_alloc_driver()
  init/main: properly align the multi-line comment
  init/main: Fix double "the" in comment
  Fix dead URLs to ftp.kernel.org
  drivers: Clean up duplicated email address
  treewide: Fix typo in xml/driver-api/basics.xml
  tools/testing/selftests/powerpc: remove redundant CFLAGS in Makefile: "-Wall -O2 -Wall" -&gt; "-O2 -Wall"
  selftests/timers: Spelling s/privledges/privileges/
  HID: picoLCD: Spelling s/REPORT_WRTIE_MEMORY/REPORT_WRITE_MEMORY/
  net: phy: dp83848: Fix Typo
  UBI: Fix typos
  Documentation: ftrace.txt: Correct nice value of 120 priority
  net: fec: Fix typo in error msg and comment
  treewide: Fix typos in printk
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'pinctrl-v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl</title>
<updated>2017-05-03T00:59:33+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2017-05-03T00:59:33+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=68fed41e0ff6c0332520a0d70ac05be2a7d9130e'/>
<id>68fed41e0ff6c0332520a0d70ac05be2a7d9130e</id>
<content type='text'>
Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v4.12 cycle.

  The extra week before the merge window actually resulted in some of
  the type of fixes that usually arrive after the merge window already
  starting to trickle in from eager developers using -next, I'm
  impressed.

  I have recruited a Samsung subsubsystem maintainer (Krzysztof) to deal
  with the onset of Samsung patches. It works great.

  Apart from that it is a boring round, just incremental updates and
  fixes all over the place, no serious core changes or anything exciting
  like that. The most pleasing to see is Julia Cartwrights work to audit
  the irqchip-providing drivers for realtime locking compliance. It's
  one of those "I should really get around to looking into that" things
  that have been on my TODO list since forever.

  Summary:

  Core changes:

   - add bi-directional and output-enable pin configurations to the
     generic bindings and generic pin controlling core.

  New drivers or subdrivers:

   - Armada 37xx SoC pin controller and GPIO support.

   - Axis ARTPEC-6 SoC pin controller support.

   - AllWinner A64 R_PIO controller support, and opening up the
     AllWinner sunxi driver for ARM64 use.

   - Rockchip RK3328 support.

   - Renesas R-Car H3 ES2.0 support.

   - STM32F469 support in the STM32 driver.

   - Aspeed G4 and G5 pin controller support.

  Improvements:

   - a whole slew of realtime improvements to drivers implementing
     irqchips: BCM, AMD, SiRF, sunxi, rockchip.

   - switch meson driver to get the GPIO ranges from the device tree.

   - input schmitt trigger support on the Rockchip driver.

   - enable the sunxi (AllWinner) driver to also be used on ARM64
     silicon.

   - name the Qualcomm QDF2xxx GPIO lines.

   - support GMMR GPIO regions on the Intel Cherryview. This fixes a
     serialization problem on these platforms.

   - pad retention support for the Samsung Exynos 5433.

   - handle suspend-to-ram in the AT91-pio4 driver.

   - pin configuration support in the Aspeed driver.

  Cleanups:

   - the final name of Rockchip RK1108 was RV1108 so rename the driver
     and variables to stay consistent"

* tag 'pinctrl-v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (80 commits)
  pinctrl: mediatek: Add missing pinctrl bindings for mt7623
  pinctrl: artpec6: Fix return value check in artpec6_pmx_probe()
  pinctrl: artpec6: Remove .owner field for driver
  pinctrl: tegra: xusb: Silence sparse warnings
  ARM: at91/at91-pinctrl documentation: fix spelling mistake: "contoller" -&gt; "controller"
  pinctrl: make artpec6 explicitly non-modular
  pinctrl: aspeed: g5: Add pinconf support
  pinctrl: aspeed: g4: Add pinconf support
  pinctrl: aspeed: Add core pinconf support
  pinctrl: aspeed: Document pinconf in devicetree bindings
  pinctrl: Add st,stm32f469-pinctrl compatible to stm32-pinctrl
  pinctrl: stm32: Add STM32F469 MCU support
  Documentation: dt: Remove ngpios from stm32-pinctrl binding
  pinctrl: stm32: replace device_initcall() with arch_initcall()
  pinctrl: stm32: add possibility to use gpio-ranges to declare bank range
  pinctrl: armada-37xx: Add gpio support
  pinctrl: armada-37xx: Add pin controller support for Armada 37xx
  pinctrl: dt-bindings: Add documentation for Armada 37xx pin controllers
  pinctrl: core: Make pinctrl_init_controller() static
  pinctrl: generic: Add bi-directional and output-enable
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v4.12 cycle.

  The extra week before the merge window actually resulted in some of
  the type of fixes that usually arrive after the merge window already
  starting to trickle in from eager developers using -next, I'm
  impressed.

  I have recruited a Samsung subsubsystem maintainer (Krzysztof) to deal
  with the onset of Samsung patches. It works great.

  Apart from that it is a boring round, just incremental updates and
  fixes all over the place, no serious core changes or anything exciting
  like that. The most pleasing to see is Julia Cartwrights work to audit
  the irqchip-providing drivers for realtime locking compliance. It's
  one of those "I should really get around to looking into that" things
  that have been on my TODO list since forever.

  Summary:

  Core changes:

   - add bi-directional and output-enable pin configurations to the
     generic bindings and generic pin controlling core.

  New drivers or subdrivers:

   - Armada 37xx SoC pin controller and GPIO support.

   - Axis ARTPEC-6 SoC pin controller support.

   - AllWinner A64 R_PIO controller support, and opening up the
     AllWinner sunxi driver for ARM64 use.

   - Rockchip RK3328 support.

   - Renesas R-Car H3 ES2.0 support.

   - STM32F469 support in the STM32 driver.

   - Aspeed G4 and G5 pin controller support.

  Improvements:

   - a whole slew of realtime improvements to drivers implementing
     irqchips: BCM, AMD, SiRF, sunxi, rockchip.

   - switch meson driver to get the GPIO ranges from the device tree.

   - input schmitt trigger support on the Rockchip driver.

   - enable the sunxi (AllWinner) driver to also be used on ARM64
     silicon.

   - name the Qualcomm QDF2xxx GPIO lines.

   - support GMMR GPIO regions on the Intel Cherryview. This fixes a
     serialization problem on these platforms.

   - pad retention support for the Samsung Exynos 5433.

   - handle suspend-to-ram in the AT91-pio4 driver.

   - pin configuration support in the Aspeed driver.

  Cleanups:

   - the final name of Rockchip RK1108 was RV1108 so rename the driver
     and variables to stay consistent"

* tag 'pinctrl-v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (80 commits)
  pinctrl: mediatek: Add missing pinctrl bindings for mt7623
  pinctrl: artpec6: Fix return value check in artpec6_pmx_probe()
  pinctrl: artpec6: Remove .owner field for driver
  pinctrl: tegra: xusb: Silence sparse warnings
  ARM: at91/at91-pinctrl documentation: fix spelling mistake: "contoller" -&gt; "controller"
  pinctrl: make artpec6 explicitly non-modular
  pinctrl: aspeed: g5: Add pinconf support
  pinctrl: aspeed: g4: Add pinconf support
  pinctrl: aspeed: Add core pinconf support
  pinctrl: aspeed: Document pinconf in devicetree bindings
  pinctrl: Add st,stm32f469-pinctrl compatible to stm32-pinctrl
  pinctrl: stm32: Add STM32F469 MCU support
  Documentation: dt: Remove ngpios from stm32-pinctrl binding
  pinctrl: stm32: replace device_initcall() with arch_initcall()
  pinctrl: stm32: add possibility to use gpio-ranges to declare bank range
  pinctrl: armada-37xx: Add gpio support
  pinctrl: armada-37xx: Add pin controller support for Armada 37xx
  pinctrl: dt-bindings: Add documentation for Armada 37xx pin controllers
  pinctrl: core: Make pinctrl_init_controller() static
  pinctrl: generic: Add bi-directional and output-enable
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>pinctrl: artpec6: Fix return value check in artpec6_pmx_probe()</title>
<updated>2017-04-28T07:40:52+00:00</updated>
<author>
<name>Wei Yongjun</name>
<email>weiyongjun1@huawei.com</email>
</author>
<published>2017-04-25T11:29:30+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=c312c2c333b88145b3073cf5acd8362af3f0cc6e'/>
<id>c312c2c333b88145b3073cf5acd8362af3f0cc6e</id>
<content type='text'>
In case of error, the function pinctrl_register() returns
ERR_PTR() not NULL. The NULL test in the return value check
should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun &lt;weiyongjun1@huawei.com&gt;
Acked-by: Jesper Nilsson &lt;jesper.nilsson@axis.com&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
In case of error, the function pinctrl_register() returns
ERR_PTR() not NULL. The NULL test in the return value check
should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun &lt;weiyongjun1@huawei.com&gt;
Acked-by: Jesper Nilsson &lt;jesper.nilsson@axis.com&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>pinctrl: artpec6: Remove .owner field for driver</title>
<updated>2017-04-26T14:27:27+00:00</updated>
<author>
<name>Wei Yongjun</name>
<email>weiyongjun1@huawei.com</email>
</author>
<published>2017-04-25T03:30:04+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=a5bf5fc060b0095ebd6f1886da8ec482697176fa'/>
<id>a5bf5fc060b0095ebd6f1886da8ec482697176fa</id>
<content type='text'>
Remove .owner field if calls are used which set it automatically.

Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci

Signed-off-by: Wei Yongjun &lt;weiyongjun1@huawei.com&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Remove .owner field if calls are used which set it automatically.

Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci

Signed-off-by: Wei Yongjun &lt;weiyongjun1@huawei.com&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>pinctrl: tegra: xusb: Silence sparse warnings</title>
<updated>2017-04-24T16:35:54+00:00</updated>
<author>
<name>Thierry Reding</name>
<email>treding@nvidia.com</email>
</author>
<published>2017-04-24T11:56:49+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=02101cb3f5a269c006c5b93f3c603dc31e473859'/>
<id>02101cb3f5a269c006c5b93f3c603dc31e473859</id>
<content type='text'>
Commit 53d2a715c240 ("phy: Add Tegra XUSB pad controller support") added
a new driver for the XUSB pad controller that implements a more flexible
devicetree binding. In order to preserve backwards compatibility the old
driver can be probed if the obsolete bindings are detected.

In order to hide the legacy code, these prototypes were defined in a
header private to the new driver. This has the disadvantage of making
the sparse code checker complain about the missing declarations when
compiling the old driver and suggesting to make the functions static.

Avoid these sparse warnings by adding local prototype declarations into
the compatibility driver.

Signed-off-by: Thierry Reding &lt;treding@nvidia.com&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Commit 53d2a715c240 ("phy: Add Tegra XUSB pad controller support") added
a new driver for the XUSB pad controller that implements a more flexible
devicetree binding. In order to preserve backwards compatibility the old
driver can be probed if the obsolete bindings are detected.

In order to hide the legacy code, these prototypes were defined in a
header private to the new driver. This has the disadvantage of making
the sparse code checker complain about the missing declarations when
compiling the old driver and suggesting to make the functions static.

Avoid these sparse warnings by adding local prototype declarations into
the compatibility driver.

Signed-off-by: Thierry Reding &lt;treding@nvidia.com&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'sh-pfc-for-v4.12-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel</title>
<updated>2017-04-24T16:34:49+00:00</updated>
<author>
<name>Linus Walleij</name>
<email>linus.walleij@linaro.org</email>
</author>
<published>2017-04-24T16:34:49+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=e41f3207be87a0f6aa4f3fe8246414e2e89fe464'/>
<id>e41f3207be87a0f6aa4f3fe8246414e2e89fe464</id>
<content type='text'>
pinctrl: sh-pfc: Updates for v4.12 (take three)

  - Miscellaneous fixes for R-Car M2-W and R-Car E2.
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
pinctrl: sh-pfc: Updates for v4.12 (take three)

  - Miscellaneous fixes for R-Car M2-W and R-Car E2.
</pre>
</div>
</content>
</entry>
<entry>
<title>pinctrl: make artpec6 explicitly non-modular</title>
<updated>2017-04-24T14:28:27+00:00</updated>
<author>
<name>Paul Gortmaker</name>
<email>paul.gortmaker@windriver.com</email>
</author>
<published>2017-04-19T19:59:05+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=4726a2c37199f1a982e9a943a23c73530d891e66'/>
<id>4726a2c37199f1a982e9a943a23c73530d891e66</id>
<content type='text'>
The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/Kconfig:config PINCTRL_ARTPEC6
drivers/pinctrl/Kconfig:        bool "Axis ARTPEC-6 pin controller driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Lars Persson &lt;lars.persson@axis.com&gt;
Cc: Niklas Cassel &lt;niklas.cassel@axis.com&gt;
Cc: linux-arm-kernel@axis.com
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker &lt;paul.gortmaker@windriver.com&gt;
Acked-by: Jesper Nilsson &lt;jesper.nilsson@axis.com&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/Kconfig:config PINCTRL_ARTPEC6
drivers/pinctrl/Kconfig:        bool "Axis ARTPEC-6 pin controller driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Lars Persson &lt;lars.persson@axis.com&gt;
Cc: Niklas Cassel &lt;niklas.cassel@axis.com&gt;
Cc: linux-arm-kernel@axis.com
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker &lt;paul.gortmaker@windriver.com&gt;
Acked-by: Jesper Nilsson &lt;jesper.nilsson@axis.com&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>pinctrl: aspeed: g5: Add pinconf support</title>
<updated>2017-04-24T12:55:50+00:00</updated>
<author>
<name>Andrew Jeffery</name>
<email>andrew@aj.id.au</email>
</author>
<published>2017-04-07T12:57:13+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=d0639d39fe977608a60e45fb51e25c17661a7ec0'/>
<id>d0639d39fe977608a60e45fb51e25c17661a7ec0</id>
<content type='text'>
Testing for pinctrl-aspeed-g5 was performed on an AST2500EVB system,
using the strategy outlined in the commit message for the change to the
Aspeed pinctrl core.

Signed-off-by: Andrew Jeffery &lt;andrew@aj.id.au&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Testing for pinctrl-aspeed-g5 was performed on an AST2500EVB system,
using the strategy outlined in the commit message for the change to the
Aspeed pinctrl core.

Signed-off-by: Andrew Jeffery &lt;andrew@aj.id.au&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>pinctrl: aspeed: g4: Add pinconf support</title>
<updated>2017-04-24T12:55:03+00:00</updated>
<author>
<name>Andrew Jeffery</name>
<email>andrew@aj.id.au</email>
</author>
<published>2017-04-07T12:57:12+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=47b50b3743cd6a9c2a90372181cfc9ee5b10186d'/>
<id>47b50b3743cd6a9c2a90372181cfc9ee5b10186d</id>
<content type='text'>
Testing for pinctrl-aspeed-g4 was performed on an OpenPOWER Palmetto
system, using the strategy outlined in the commit message for the
change to the Aspeed pinctrl core.

Signed-off-by: Andrew Jeffery &lt;andrew@aj.id.au&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Testing for pinctrl-aspeed-g4 was performed on an OpenPOWER Palmetto
system, using the strategy outlined in the commit message for the
change to the Aspeed pinctrl core.

Signed-off-by: Andrew Jeffery &lt;andrew@aj.id.au&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>pinctrl: aspeed: Add core pinconf support</title>
<updated>2017-04-24T12:53:58+00:00</updated>
<author>
<name>Andrew Jeffery</name>
<email>andrew@aj.id.au</email>
</author>
<published>2017-04-07T12:57:11+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=7f354fd13877aae8abcd7b5a389cc85e3d2e4ed1'/>
<id>7f354fd13877aae8abcd7b5a389cc85e3d2e4ed1</id>
<content type='text'>
Several pinconf parameters have a fairly straight-forward mapping onto
the Aspeed pin controller. These include management of pull-down bias,
drive-strength, and some debounce configuration.

Pin biasing largely is managed on a per-GPIO-bank basis, aside from the
ADC and RMII/RGMII pins. As the bias configuration for each pin in a
bank maps onto a single per-bank bit, configuration tables will be
introduced to describe the ranges of pins and the supported pinconf
parameter. The use of tables also helps with the sparse support of
pinconf properties, and the fact that not all GPIO banks support
biasing or drive-strength configuration.

Further, as the pin controller uses a consistent approach for bias and
drive strength configuration at the register level, a second table is
defined for looking up the the bit-state required to enable or query the
provided configuration.

Testing for pinctrl-aspeed-g4 was performed on an OpenPOWER Palmetto
system, and pinctrl-aspeed-g5 on an AST2500EVB as well as under QEMU.
The test method was to set the appropriate bits via devmem and verify
the result through the controller's pinconf-pins debugfs file. This
simultaneously validates the get() path and half of the set() path. The
remainder of the set() path was validated by configuring a handful of
pins via the devicetree with the supported pinconf properties and
verifying the appropriate registers were touched.

Signed-off-by: Andrew Jeffery &lt;andrew@aj.id.au&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Several pinconf parameters have a fairly straight-forward mapping onto
the Aspeed pin controller. These include management of pull-down bias,
drive-strength, and some debounce configuration.

Pin biasing largely is managed on a per-GPIO-bank basis, aside from the
ADC and RMII/RGMII pins. As the bias configuration for each pin in a
bank maps onto a single per-bank bit, configuration tables will be
introduced to describe the ranges of pins and the supported pinconf
parameter. The use of tables also helps with the sparse support of
pinconf properties, and the fact that not all GPIO banks support
biasing or drive-strength configuration.

Further, as the pin controller uses a consistent approach for bias and
drive strength configuration at the register level, a second table is
defined for looking up the the bit-state required to enable or query the
provided configuration.

Testing for pinctrl-aspeed-g4 was performed on an OpenPOWER Palmetto
system, and pinctrl-aspeed-g5 on an AST2500EVB as well as under QEMU.
The test method was to set the appropriate bits via devmem and verify
the result through the controller's pinconf-pins debugfs file. This
simultaneously validates the get() path and half of the set() path. The
remainder of the set() path was validated by configuring a handful of
pins via the devicetree with the supported pinconf properties and
verifying the appropriate registers were touched.

Signed-off-by: Andrew Jeffery &lt;andrew@aj.id.au&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</pre>
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