We set the pin configuration for the jz4740-nand, jz4740-mmc,
jz4740-fb, jz4740-pwm and jz4740-uart drivers.
This will permit those drivers to be cleaned out of the custom GPIO code
that they currently use.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
For a description of the devicetree node, please read
Documentation/devicetree/bindings/pinctrl/ingenic,pinctrl.txt
For a description of the gpio devicetree nodes, please read
Documentation/devicetree/bindings/gpio/ingenic,gpio.txt
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
For a description of the pinctrl devicetree node, please read
Documentation/devicetree/bindings/pinctrl/ingenic,pinctrl.txt
For a description of the gpio devicetree nodes, please read
Documentation/devicetree/bindings/gpio/ingenic,gpio.txt
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We use a directory under arch/$ARCH/boot/dts as an include path
that has links outside of the subtree to find dt-bindings from under
include/dt-bindings. That's been working well, but new DT architectures
haven't been adding them by default.
Recently there's been a desire to share some of the DT material between
arm and arm64, which originally caused developers to create symlinks or
relative includes between the subtrees. This isn't ideal -- it breaks
if the DT files aren't stored in the exact same hierarchy as the kernel
tree, and generally it's just icky.
As a somewhat cleaner solution we decided to add a $ARCH/ prefix link
once, and allow DTS files to reference dtsi (and dts) files in other
architectures that way.
Original approach was to create these links under each architecture,
but it lead to the problem of recursive symlinks.
As a remedy, move the include link directories out of the architecture
trees into a common location. At the same time, they can now share one
directory and one dt-bindings/ link as well.
Fixes: 4027494ae6 ('ARM: dts: add arm/arm64 include symlinks')
Reported-by: Russell King <linux@armlinux.org.uk>
Reported-by: Omar Sandoval <osandov@osandov.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: linux-arch <linux-arch@vger.kernel.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
An img directory exists for the Pistchio SoC device tree but the
directory itself isn't in the dts Makefile meaning the dtbs never get
built.
Fixes: daa10170da ("MIPS: DTS: img: add device tree for Marduk board")
Signed-off-by: Ian Pozella <Ian.Pozella@imgtec.com>
Reviewed-by: Rahul Bedarkar <Rahul.Bedarkar@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15309/
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Al Viro noticed that we were using two different methods to filter out
flags from KBUILD_CFLAGS.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Add support for Imagination Technologies' Marduk board which is based
on Pistachio SoC. It is also known as Creator Ci40. Marduk is legacy
name and will be there for decades.
Documentation for this board can be found on
https://docs.creatordev.io/ci40/
This patch adds initial support for board with following peripherals:
* PWM based heartbeat LED
* GPIO based buttons
* SPI NOR flash on SPI1
* UART0 and UART1
* SD card
* Ethernet
* USB
* PWM
* ADC
* I2C
Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: James Hartley <james.hartley@imgtec.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14394/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The make variables KBUILD_CFLAGS and KBUILD_AFLAGS both contain
$(LINUXINCLUDE). But the build already picks up $(LINUXINCLUDE) from
scripts/Makefile.lib. The net effect is that the (long) list of include
directories is used twice.
This is harmless but pointless. So stop using $(LINUXINCLUDE) twice.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14622/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
uzImage.bin is vmlinuz.bin wrapped in a legacy U-Boot image. Since
the extraction code is inside the image, it does not depend on the
boot loader to extract the kernel.
Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14473/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Subsystem:
- non-modular drivers are now explicitly non-modular
New driver:
- Epson Toyocom rtc-7301sf/dg
Drivers:
- cmos: reject unsupported alarm values wrt the RTC capabilities
- ds1307: ACPI support
- jz4740: DT support, jz4780 handling, can now be used as a system power
controller
- mcp795: many fixes, in particular proper month handling
- twl: driver is now DT only
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Merge tag 'rtc-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"Subsystem:
- non-modular drivers are now explicitly non-modular
New driver:
- Epson Toyocom rtc-7301sf/dg
Drivers:
- cmos: reject unsupported alarm values wrt the RTC capabilities
- ds1307: ACPI support
- jz4740: DT support, jz4780 handling, can now be used as a system
power controller
- mcp795: many fixes, in particular proper month handling
- twl: driver is now DT only"
* tag 'rtc-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (31 commits)
rtc: mcp795: Fix whitespace and indentation.
rtc: mcp795: Prefer using the BIT() macro.
rtc: mcp795: fix month write resetting date to 1.
rtc: mcp795: fix time range difference between linux and RTC chip.
rtc: mcp795: fix bitmask value for leap year (LP).
rtc: mcp795: use bcd2bin/bin2bcd.
rtc: add support for EPSON TOYOCOM RTC-7301SF/DG
rtc: ds1307: Add ACPI support
rtc: imxdi: (trivial) fix a typo
rtc: ds1374: Merge conditional + WARN_ON()
rtc: twl: make driver DT only
rtc: twl: kill static variables
rtc: fix typos in Kconfig
rtc: jz4740: make the driver builtin only
rtc: jz4740: remove unused EXPORT_SYMBOL
Documentation: bindings: fix twl-rtc documentation
rtc: Enable compile testing for Maxim and Samsung drivers
MIPS: jz4740: Remove obsolete code
MIPS: qi_lb60: Probe RTC driver from DT and use it as power controller
MIPS: jz4740: DTS: Probe the jz4740-rtc driver from devicetree
...
Since we already have a devicetree node for the jz4740-rtc driver, we
don't have to probe it from platform code.
Besides, using the jz4740-rtc driver as the power controller for the
qi_lb60 platform allows us to remove the jz4740 platform power-off code,
since this is the only jz4740-based board upstream.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Acked-by: Maarten ter Huurne <maarten@treewalker.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Now that the jz4740-rtc driver supports devicetree, we can add a
devicetree node for it.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Acked-by: Maarten ter Huurne <maarten@treewalker.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Commit 10b6ea0959 ("MIPS: Malta: Use syscon-reboot driver to reboot")
converted the Malta board to use the generic syscon-reboot driver to
handle reboots, but incorrectly used the value 0x4d rather than 0x42 as
the magic to write to the reboot register.
I also incorrectly believed that syscon/regmap would default to native
endianness, but this isn't the case. Force this by specifying with a
native-endian property in the devicetree.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: 10b6ea0959 ("MIPS: Malta: Use syscon-reboot driver to reboot")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Cc: linux-mips@linux-mips.org
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Maciej W. Rozycki <macro@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/14396/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Convert the MIPS SEAD-3 board support to be a generic board, supported
by generic kernels.
Because the SEAD-3 boot protocol was defined long ago and we don't want
to force a switch to the UHI protocol, SEAD-3 is added as a legacy board
which is detected by reading the REVISION register. This may technically
not be a valid memory read & future work will include attempting to
handle that gracefully. In practice since SEAD-3 is the only legacy
board supported by the generic kernel so far the read will only happen
on SEAD-3 boards, and even once Malta is converted the same REVISION
register exists there too. Other boards such as Boston, Ci20 & Ci40 will
use the UHI boot protocol & thus not run any of the legacy board detect
functions.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14354/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Introduce a "generic" platform, which aims to be board-agnostic by
making use of device trees passed by the boot protocol defined in the
MIPS UHI (Universal Hosting Interface) specification. Provision is made
for supporting boards which use a legacy boot protocol that can't be
changed, but adding support for such boards or any others is left to
followon patches.
Right now the built kernels expect to be loaded to 0x80100000, ie. in
kseg0. This is fine for the vast majority of MIPS platforms, but
nevertheless it would be good to remove this limitation in the future by
mapping the kernel via the TLB such that it can be loaded anywhere & map
itself appropriately.
Configuration is handled by dynamically generating configs using
scripts/kconfig/merge_config.sh, somewhat similar to the way powerpc
makes use of it. This allows for variations upon the configuration, eg.
differing architecture revisions or subsets of driver support for
differing boards, to be handled without having a large number of
defconfig files.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14353/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Add support for generating kernel images in the Flattened Image Tree
(.itb) format as supported by U-Boot. This format is essentially a
Flattened Device Tree binary containing images (kernels, DTBs, ramdisks)
and configurations which link those images together. The big advantages
of FIT images over the uImage format are:
- We can include FDTs in the kernel image in a way that the bootloader
can extract it & manipulate it before providing it to the kernel.
Thus we can ship FDTs as part of the kernel giving us the advantages
of being able to develop & maintain the DT within the kernel tree,
but also have the benefits of the bootloader being able to
manipulate the FDT. Example uses for this would be to inject the
kernel command line into the chosen node, or to fill in the correct
memory size.
- We can include multiple configurations in a single kernel image.
This means that a single FIT image can, given appropriate
bootloaders, be booted on different boards with the bootloader
selecting an appropriate configuration & providing the correct FDT
to the kernel.
- We can support a multitude of hashes over the data.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14352/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Make use of the generic syscon-reboot driver to reboot the Malta board,
reducing the amount of platform code it requires.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Stephan Linz <linz@li-pro.net>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14279/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Add the DT nodes required to probe the CFI compatible parallel monitor
flash found on the Malta development board, and remove the platform
code that was previously doing it. Delete the now-empty malta-platform.c
file. Adjust the Malta defconfigs that enable MTD & the pflash/CFI
driver to enable CONFIG_MTD_PHYSMAP_OF rather than CONFIG_MTD_PHYSMAP in
order to preserve their behaviour.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14278/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Probe the CPU, GIC & i8259 interrupt controllers present in the Malta
system using device tree. This enables interrupts to be provided to
devices using device tree as they are moved over to being probed using
it.
Since Malta is very configurable it's unknown whether a GIC will be
present at compile time. In order to support both cases the
malta_dt_shim code is added in order to detect whether a GIC is present,
adjusting the DT to route interrupts correctly and nop out the GIC node
if no GIC is found.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14274/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Probe the img-ascii-lcd driver using device tree in order to display a
message on the SEAD3 board's LCD display, and remove the platform code
that was formerly performing this function. This removes more platform
code and moves SEAD3 further towards being entirely DT-based.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14063/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Remove the custom platform code to restart when instructed to power off,
instead relying upon the generic restart-poweroff driver probed via DT
to do the same thing.
Remove also the halt implementation, which is incorrect. The generic
MIPS version will hang the system as halt should.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14057/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Probe a driver for the PLED & FLED LEDs found on the SEAD3 board using
the register-bit-led driver via device tree, rather than a custom driver
via platform code. Enable support for the register-bit-led driver & its
prerequisite syscon in sead3_defconfig.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14054/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Probe the SEAD3 EHCI controller using the generic-ehci driver & device
tree rather than platform code, in order to reduce the amount of the
latter.
Now that no devices probed from platform code require interrupts, remove
the retrieval of the IRQ domain & sead3int.h.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14051/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Probe the UARTs on SEAD3 boards using device tree rather than platform
code, in order to reduce the amount of the latter. This requires that
CONFIG_SERIAL_OF_PLATFORM be enabled, so enable it in sead3_defconfig.
The SEAD3 DT shim code is extended to read bootloader environment
variables to determine the appropriate UART & mode for kernel console
output & set the stdout-path property of the chosen node accordingly.
In contrast to the old platform code, which appears to have only ever
set "console=ttyS0,38400n8r" with the code in console_config never
having an effect, this will honor the "yamontty" environment variable to
select between the 2 UARTs on the board and then check the "modetty0" or
"modetty1" variable as appropriate to determine the UART configuration.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14048/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Probe the CPU interrupt controller & optional Global Interrupt
Controller (GIC) using devicetree rather than platform code. Because the
bootloader on SEAD3 does not provide a device tree to the kernel & the
device tree is always built in, we patch out the GIC node during boot if
we detect that a GIC is not present in the system.
The appropriate IRQ domain is discovered by platform code setting up
device IRQ numbers temporarily. It will be removed by further patches
which move the devices towards being probed via device tree.
No behavioural change is intended by this patch.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14047/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
When using clang as HOSTCC, the following warnings appear:
In file included from arch/mips/boot/tools/relocs_64.c:27:0:
arch/mips/boot/tools/relocs.c: In function ‘read_relocs’:
arch/mips/boot/tools/relocs.c:397:4: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
ELF_R_SYM(rel->r_info) = elf32_to_cpu(ELF_R_SYM(rel->r_info));
^~~~~~~~~
arch/mips/boot/tools/relocs.c:397:4: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
arch/mips/boot/tools/relocs.c: In function ‘walk_relocs’:
arch/mips/boot/tools/relocs.c:491:4: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
Elf_Sym *sym = &sh_symtab[ELF_R_SYM(rel->r_info)];
^~~~~~~
arch/mips/boot/tools/relocs.c: In function ‘do_reloc’:
arch/mips/boot/tools/relocs.c:502:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
unsigned r_type = ELF_R_TYPE(rel->r_info);
^~~~~~~~
arch/mips/boot/tools/relocs.c: In function ‘do_reloc_info’:
arch/mips/boot/tools/relocs.c:641:3: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
rel_type(ELF_R_TYPE(rel->r_info)),
^~~~~~~~
Fix them by making Elf64_Mips_Rela a union
Signed-off-by: Harvey Hunt <harvey.hunt@imgtec.com>
Acked-by: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13683/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
