These changes configure the mcan clock, interconnect target
module and mcan device. These changes depend on the ti-sysc
related driver changes and are based on those.
Notably this is the first new driver that probes with ti-sysc
driver with no legacy hwmod platform data for the interconnect
target module.
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Merge tag 'omap-for-v4.19/dt-mcan-v2-signed-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt
dts changes for mcan for omaps for v4.19 merge window
These changes configure the mcan clock, interconnect target
module and mcan device. These changes depend on the ti-sysc
related driver changes and are based on those.
Notably this is the first new driver that probes with ti-sysc
driver with no legacy hwmod platform data for the interconnect
target module.
* tag 'omap-for-v4.19/dt-mcan-v2-signed-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: dra76x: Add MCAN node
ARM: dts: Add generic interconnect target module node for MCAN
ARM: dts: dra762: Add MCAN clock support
bus: ti-sysc: Add support for software reset
bus: ti-sysc: Add support for using ti-sysc for MCAN on dra76x
clk: ti: dra7: Add clkctrl clock data for the mcan clocks
bus: ti-sysc: Use 2-factor allocator arguments
Signed-off-by: Olof Johansson <olof@lixom.net>
Mostly updates to configure and improve the devices
found on various SoCs and boards:
- several patches to update support for am3517-evm
to replace bogus fixed regulators with proper
regulators and configure various devices such
as wlan, bluetooth and usb1
- add missing cooling devices for omap5 and dra7
- configure dual role for usb ports for am57xx
and dra7
- PM updates for omap4 devices to allow retention
idle for minimal configurations
- am335x-sl50 updates for various devices
- update d-can alias names to not use undescore
- configure pandaboard gpio button
- a non-urgent change to fix dcan node address that
i forgot to send a pull request for earlier
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Merge tag 'omap-for-v4.19/dt-signed-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt
dts changes for omaps for v4.19 merge window
Mostly updates to configure and improve the devices
found on various SoCs and boards:
- several patches to update support for am3517-evm
to replace bogus fixed regulators with proper
regulators and configure various devices such
as wlan, bluetooth and usb1
- add missing cooling devices for omap5 and dra7
- configure dual role for usb ports for am57xx
and dra7
- PM updates for omap4 devices to allow retention
idle for minimal configurations
- am335x-sl50 updates for various devices
- update d-can alias names to not use undescore
- configure pandaboard gpio button
- a non-urgent change to fix dcan node address that
i forgot to send a pull request for earlier
* tag 'omap-for-v4.19/dt-signed-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (25 commits)
ARM: dts: pandaboard: add gpio user button
ARM: dts: am3517-evm: Add 'vdd_io_reg' regulator references
ARM: dts: am3517-evm: Enable USB1 Host
ARM: dts: am33xx: Fix syntax of alias names
ARM: dts: am3517-som: Add builtin Bluetooth
ARM: dts: am3517-som: Add WL127x Wifi
ARM: dts: am335x-sl50: enable tsadc on SL50 board
ARM: dts: am335x-sl50: fix label names for all LEDs
ARM: dts: am335x-sl50: use audio-graph-card for sound
ARM: dts: am335x-sl50: add support for DS1339 Real Time Clock
ARM: dts: am335x-sl50: set dr_mode to otg
ARM: dts: am335x-sl50: add a node for the LCD controller
ARM: dts: am335x-sl50: use phy-phandle declarations
ARM: dts: am335x-sl50: update backlight nodes
ARM: dts: omap4-droid4: Use software debounce for gpio-keys
ARM: dts: Configure duovero for to allow core retention during idle
ARM: dts: Improve omap l4per idling with wlcore edge sensitive interrupt
ARM: dts: dra76-evm: Add VBUS GPIO to USB1/USB2 extcon
ARM: dts: dra71-evm: Add VBUS GPIO to USB1/USB2 extcon
ARM: dts: dra7-evm: Add extcon to USB2 port
...
Signed-off-by: Olof Johansson <olof@lixom.net>
-------------------------------------
* DA850 now uses clocks from device-tree
* DA850 EVM gains LCD (with backlight) and SATA support
* Lego Mindstorms gains bluetooth support
* DSP reset control support on DA850
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Merge tag 'davinci-for-v4.19/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/dt
DaVinci Device-Tree updates for v4.19
-------------------------------------
* DA850 now uses clocks from device-tree
* DA850 EVM gains LCD (with backlight) and SATA support
* Lego Mindstorms gains bluetooth support
* DSP reset control support on DA850
* tag 'davinci-for-v4.19/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: dts: da850: Add power-domains to CPPI 4.1 node
ARM: davinci: dts: add a reset control to the dsp node
ARM: davinci: dts: make psc0 a reset provider
ARM: dts: da850-lego-ev3: Add Bluetooth nodes
ARM: dts: da850: Add power-domains to PWM nodes
ARM: dts: da850: Add clocks
dt-bindings: timer: new bindings for TI DaVinci timer
ARM: dts: da850-evm: Enable LCD and backlight
ARM: dts: da850-evm: Enable SATA port
Signed-off-by: Olof Johansson <olof@lixom.net>
for 4.19, please pull the following:
- Scott does a bunch of updates to the Stingray DTS and DTS include
files to better support the addition of new boards. Scott also adds
the Stingray OTP Device Tree node
- Pramod updates the Stingray clocks such that they match the latest
revision of the ASIC and datasheets
- Ray sets the Stingray initial watchdog timeout to 60 seconds to give
sufficient time for the kernel to boot and then adds PAXC (internal
PCIe) support to the Stingray base DTS files
- Vladimir adds support for the Stingray smart NIC PS225 boards variants
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Merge tag 'arm-soc/for-4.19/devicetree-arm64' of https://github.com/Broadcom/stblinux into next/dt
This pull request contains Broadcom ARM64-based SoCs Device Tree changes
for 4.19, please pull the following:
- Scott does a bunch of updates to the Stingray DTS and DTS include
files to better support the addition of new boards. Scott also adds
the Stingray OTP Device Tree node
- Pramod updates the Stingray clocks such that they match the latest
revision of the ASIC and datasheets
- Ray sets the Stingray initial watchdog timeout to 60 seconds to give
sufficient time for the kernel to boot and then adds PAXC (internal
PCIe) support to the Stingray base DTS files
- Vladimir adds support for the Stingray smart NIC PS225 boards variants
* tag 'arm-soc/for-4.19/devicetree-arm64' of https://github.com/Broadcom/stblinux:
arm64: dts: stingray: add bcm958802a802x dts
arm64: dts: stingray: add PAXC support
arm64: dts: set initial SR watchdog timeout to 60 seconds
arm64: dts: Update Stingray clock DT nodes
arm64: dts: stingray: Add OTP device node
arm64: dts: stingray: move common board components to stingray-board-base
Signed-off-by: Olof Johansson <olof@lixom.net>
for 4.19, please pull the following:
- Clement adds ethernet aliases to the Cygnus DTS include file such that
a DT aware bootloader such as u-boot can properly insert MAC addresses
- Mohamed adds a Device Tree node for the HWRNG found on Cygnus SoCs
- Vivek migrates all the BCM5301x (Northstar) Device Tree sources to use
the proper USB 3.0 PHY representation using its parent MDIO bus.
Vivek also completes the Linksys EA9500 Device Tree by adding support
for LEDs, internal and external switches.
- Rafal adds the ARM architected timer to the BCM53573 Device Tree
include file.
- Eric adds the Performance Monitoring Unit to the BCM2837 DTS include
file since it was absent before
- Boris adds the BCM283x transposer block to the Device Tree
- Stefan adds the Raspberry Pi Compute Module (CM1) Device Tree include
and sources.
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Merge tag 'arm-soc/for-4.19/devicetree' of https://github.com/Broadcom/stblinux into next/dt
This pull request contains Broadcom ARM-based SoCs Device Tree changes
for 4.19, please pull the following:
- Clement adds ethernet aliases to the Cygnus DTS include file such that
a DT aware bootloader such as u-boot can properly insert MAC addresses
- Mohamed adds a Device Tree node for the HWRNG found on Cygnus SoCs
- Vivek migrates all the BCM5301x (Northstar) Device Tree sources to use
the proper USB 3.0 PHY representation using its parent MDIO bus.
Vivek also completes the Linksys EA9500 Device Tree by adding support
for LEDs, internal and external switches.
- Rafal adds the ARM architected timer to the BCM53573 Device Tree
include file.
- Eric adds the Performance Monitoring Unit to the BCM2837 DTS include
file since it was absent before
- Boris adds the BCM283x transposer block to the Device Tree
- Stefan adds the Raspberry Pi Compute Module (CM1) Device Tree include
and sources.
* tag 'arm-soc/for-4.19/devicetree' of https://github.com/Broadcom/stblinux:
ARM: dts: BCM5301X: Add support for Linksys EA9500
ARM: dts: BCM53573: Add architected timer
ARM: dts: BCM5301X: Make USB 3.0 PHY use MDIO PHY driver
ARM: dts: cygnus: enable iproc-hwrng
ARM: dts: cygnus: add ethernet0 alias
ARM: dts: bcm283x: Add Transposer block
ARM: dts: bcm283x: Add the PMU to the devicetree.
ARM: dts: add Raspberry Pi Compute Module and IO board
Signed-off-by: Olof Johansson <olof@lixom.net>
the Chromebook Flip C101PA which also got some stuff moved around
to make room for Scarlet once its display pipeline makes some more
advances.
Also included are some general sound improvements for rk3399
including enabling hdmi-sound on the sapphire board and some
misc fixes like missing cooling device properties and wrong
clock-names for the uart1 on rk3328.
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Merge tag 'v4.19-rockchip-dts64-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/dt
SPDX conversion for existing devicetree files. New board is Gru-Bob
the Chromebook Flip C101PA which also got some stuff moved around
to make room for Scarlet once its display pipeline makes some more
advances.
Also included are some general sound improvements for rk3399
including enabling hdmi-sound on the sapphire board and some
misc fixes like missing cooling device properties and wrong
clock-names for the uart1 on rk3328.
* tag 'v4.19-rockchip-dts64-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
arm64: dts: rockchip: corrected uart1 clock-names for rk3328
arm64: dts: rockchip: add Google Bob
arm64: dts: rockchip: move core edp from rk3399-kevin to shared chromebook
arm64: dts: rockchip: move Chromebook-specific Gru-parts to a separate file
arm64: dts: rockchip: add phandles to some nodes on rk3399-gru
arm64: dts: rockchip: add some common pin-settings to rk3399
arm64: dts: rockchip: generalize rk3399 #sound-dai-cells
arm64: dts: rockchip: Add missing cooling device properties for CPUs
arm64: dts: rockchip: enable hdmi sound on rk3399-sapphire
arm64: dts: rockchip: connect hdmi sound in rk3399
arm64: dts: rockchip: use SPDX-License-Identifier
Signed-off-by: Olof Johansson <olof@lixom.net>
as conversion of rk3288 to OPPv2 to facilitate the addition of
missing cpu-cooling-device properties.
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Merge tag 'v4.19-rockchip-dts32-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/dt
SPDX conversion for existing Rockchip devicetree files as well
as conversion of rk3288 to OPPv2 to facilitate the addition of
missing cpu-cooling-device properties.
* tag 'v4.19-rockchip-dts32-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: dts: rockchip: Add missing cooling device properties for CPUs on rk3288
ARM: dts: rockchip: convert rk3288 to operating-points-v2
ARM: dts: rockchip: Add missing cooling device properties for CPUs on rk322x
ARM: dts: rockchip: use SPDX-License-Identifier
Signed-off-by: Olof Johansson <olof@lixom.net>
Add bcm958802a802x dts to be used on all Stingray smart NIC PS225 board
variants
Signed-off-by: Vladimir Olovyannikov <vladimir.olovyannikov@broadcom.com>
Signed-off-by: Pramod Kumar <pramod.kumar@broadcom.com>
Signed-off-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Add PAXC support to Broadcom Stingray SoC
Signed-off-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Peter Spreadborough <peter.spreadborough@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Add support for the MCAN peripheral which supports both classic
CAN messages along with the new CAN-FD message.
Add MCAN node to evm and enable it with a maximum datarate of 5 mbps
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The ti-sysc driver provides support for manipulating the idle modes
and interconnect level resets.
Add the generic interconnect target module node for MCAN to support
the same.
CC: Tony Lindgren <tony@atomide.com>
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
MCAN is clocked by H14 divider of DPLL_GMAC. Unlike other
DPLL dividers this DPLL_GMAC H14 divider is controlled by
control module. Adding support for these clocks.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This adds the power-domains property to CPPI 4.1 node.
The CPPI 4.1 DMA driver uses pm_runtime to manage the clocks,
so it needs this property in order to find and enable the clock
properly.
Reviewed-by: David Lechner <david@lechnology.com>
Tested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Add support for the software reset of a target interconnect
module using its sysconfig and sysstatus registers.
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
[tony@atomide.com: updated to check if sysconfig exists]
Signed-off-by: Tony Lindgren <tony@atomide.com>
The dra76x MCAN generic interconnect module has a its own
format for the bits in the control registers.
Therefore add a new module type, new regbits and new capabilities
specific to the MCAN module.
Acked-by: Rob Herring <robh@kernel.org>
CC: Tony Lindgren <tony@atomide.com>
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Add clkctrl data for the m_can clocks and register it within the
clkctrl driver
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
CC: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Set initial Stingray watchdog timeout to 60 seconds
By the time when the userspace watchdog daemon is ready and taking control
over, the watchdog timeout will then be reset to what's configured in the
daemon.
Signed-off-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Vladimir Olovyannikov <vladimir.olovyannikov@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This pull request brings in a board DT for the Raspberry Pi Compute
Module and its I/O board, the Pi3's PMU node, and the display's
transposer block.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
It's a standard ARM architected timer that was simply missed when
initially adding this .dtsi file.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Currently, the USB 3.0 PHY in bcm5301x.dtsi uses platform driver which
requires register range "ccb-mii" <0x18003000 0x1000>. This range
overlaps with MDIO cmd and param registers (<0x18003000 0x8>).
Essentially, the platform driver partly acts like a MDIO bus driver,
hence to use of this register range.
In some Northstar devices like Linksys EA9500, secondary switch is
connected via external MDIO. The only way to access and configure the
external switch is via MDIO bus. When we enable the MDIO bus in it's
current state, the MDIO bus and any child buses fail to register because
of the register range overlap.
On Northstar, the USB 3.0 PHY is connected at address 0x10 on the
internal MDIO bus. This change moves the usb3_phy node and makes it a
child node of internal MDIO bus.
Thanks to Rafał Miłecki's commit af850e14a7 ("phy: bcm-ns-usb3: add
MDIO driver using proper bus layer") the same USB 3.0 platform driver
can now act as USB 3.0 PHY MDIO driver.
Tested on Linksys Panamera (EA9500)
Signed-off-by: Vivek Unune <npcomplete13@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
In order to avoid Linux generating a random mac address on every boot,
add an ethernet0 alias that will allow u-boot to patch the dtb with
the MAC address.
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Acked-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
The transposer block is allowing one to write the result of the VC4
composition back to memory instead of displaying it on a screen.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Eric Anholt <eric@anholt.net>
This only probes on arm64 so far, but hopefully that driver will be
generalized soon.
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
The PandaBoard has a user button connected to GPIO. On the ES this is connected
to GPIO 113, on all the other Panda editons this is GPIO 121.
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
There are a few peripherals that generate some extra noise when they
don't have a regulator assigned to them. This patch assigns them to
their actual tps65023 regulator 'vdd_io_reg' (VDCDC2).
Signed-off-by: Derald D. Woods <woods.technical@gmail.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
After Kevin, the second chromebook-incarnation of the Gru series is Bob.
This materializes as the Asus Chromebook Flip C101PA, whose formfactor
is quite similar to Minnie from the Veyron series.
Add the devicetree file and binding update for it.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Bob needs the same backlight and core edp settings, so move these nodes to
the shared dtsi that both will use as a base.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Similar to rk3288-Veyron before, the Gru-series does contain Chromebook
(aka clamshell laptops) and non-Chromebook devices. And while the two
Chromebook devices Kevin and Bob are quite similar, Scarlet the tablet-
device is quite different in its design.
Therefore move the Chromebook parts into a gru-chromebook dtsi file
to make sharing easier.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Some nodes will need to be refined on a per board level, so add phandles
to them to reference them later.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The AM3517-evm has a single USB Host port connected to hsusb1.
This patch enables that USB port.
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
DT specifications do not allow the underscore character in alias names.
Replace all underscores in alias names by dashes.
Signed-off-by: Felix Brack <fb@ltec.ch>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This enables the Bluetooth on the wl1271 available in some models
of the AM3517-SOM from Logic PD.
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Certain models of the AM3517 SOM from Logic PD come with an
integrated WL1271 WiFi. This patch enables the WiFi.
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The tsadc is used to read various voltages on the board, so enable it
to be able to read these voltages from userspace.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Fix the label for all LEDs, we made a mistake setting the label names on
all LEDs, where says green should say red, and viceversa, where says red
should be green.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
audio-graph-card is recommended for audio bindings. Let's change to it and
improve the support by adding the Amplifier configuration and the clock
enable control.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Production hardware will go with the DS1339 RTC chip, so replace the old
for the new one and also add the nIRQ pin to be able to properly wakeup
the system from suspend.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The board can be either a host, or a peripheral, so set the controller as
OTG mode to reflect this.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Add the pins used by the LCD controller, the panel-info and display-timings
information for the MIDAS displays connected to the board. There are
two displays in the board, and these, are connected to the LCD controller
through a FPGA, so the timings and the resolution is what expects the FPGA,
not the MIDAS displays.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
phy-phandle is now a preferred method to reference a PHY device. The new
method also allows you to specify a reset gpio which is required for
this board.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch updates the backlight nodes to improve the support and describe
better how hardware is done. The changes done were:
* Use PWM_POLARITY_INVERTED instead of the hardcoded number.
* Add pinctrl configuration.
* Add the enable gpio definition.
* Add the power supply definition.
* Add more brightness levels.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The default value of 5ms will use GPIO hardware based debounce clocks
that will keep L4PER from idling consuming about extra 30mW.
Use a value of 10ms that is above the hardware debounce maximum of
7.95ms forcing software based debouncing.
This allows droid4 to enter PER retention during idle as long as UARTs
are idled and USB modules unloaded or unbound.
Note that there seems to be a pending issue with having droid 4 enter core
retention during idle where GPIO bank 1 needs to be reset late after init
for some reason to not block core retention. In addition to that, we are
also missing GPIO related PM runtime calls for omap4 that will be posted
separately.
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Michael Scott <hashcode0f@gmail.com>
Cc: NeKit <nekit1000@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
By reconfiguring few GPIOs in the dts file we can make duovero parlor
hit retention during idle:
1. Let's a larger debounce value for gpio-keys
This will then make gpio-keys use software debounce and the GPIO
debounce clock is not enabled.
2. Let's allow WLAN suspend for mwifiex
This can be done just by adding keep-power-in-suspend.
3. Let's reconfigure smsc911x driver to use GPIO edge interrupt
This will allow using NFSroot while the system idles, and the kernel
has quite a few dts files with "smsc,lan9115" compatible using edge
interrupts.
Then to have the system hit core retention during idle, the UARTs
needs to be idled and USB modules need to be unloaded or unbound.
Cc: Ash Charles <ash@gumstix.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The wl1835mod.pdf data sheet says this pretty clearly for WL_IRQ line:
"WLAN SDIO out-of-band interrupt line. Set to rising edge (active high)
by default."
And it seems this interrupt can be optionally configured to use falling
edge too since commit bd763482c8 ("wl18xx: wlan_irq: support platform
dependent interrupt types").
On omap4, if the wlcore interrupt is configured as level instead of edge,
L4PER will stop doing hardware based idling after ifconfig wlan0 down is
done and the WL_EN line is pulled down.
The symptoms show up with L4PER status registers no longer showing the
IDLEST bits as 2 but as 0 for all the active GPIO banks and for
L4PER_CLKCTRL. Also the l4per_pwrdm RET count stops increasing in
the /sys/kernel/debug/pm_debug/count.
While there is also probably a GPIO related issue that needs to be
still fixed, this change gets us to the point where we can have L4PER
idling.
I'm guessing wlcore was at some point configured to use level interrupts
because of edge handling issues in gpio-omap. However, with the recent
fixes to gpio-omap the edge interrupts seem to be working just fine.
Let's change it for all omap boards with wlcore interrupt set as level.
Cc: Dave Gerlach <d-gerlach@ti.com>
Cc: Eyal Reizer <eyalr@ti.com>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Nishanth Menon <nm@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
[tony@atomide.com updated comments a bit for gpio issue]
Signed-off-by: Tony Lindgren <tony@atomide.com>
