linux-stable.git/arch/mips/boot, branch v4.19.78

MIPS: fix build on non-linux hosts

2019-07-26T07:13:55+00:00

[ Upstream commit 1196364f21ffe5d1e6d83cafd6a2edb89404a3ae ]

calc_vmlinuz_load_addr.c requires SZ_64K to be defined for alignment
purposes.  It included "../../../../include/linux/sizes.h" to define
that size, however "sizes.h" tries to include  which
assumes linux system headers.  These may not exist eg. the following
error was encountered when building Linux for OpenWrt under macOS:

In file included from arch/mips/boot/compressed/calc_vmlinuz_load_addr.c:16:
arch/mips/boot/compressed/../../../../include/linux/sizes.h:11:10: fatal error: 'linux/const.h' file not found
         ^~~~~~~~~~

Change makefile to force building on local linux headers instead of
system headers.  Also change eye-watering relative reference in include
file spec.

Thanks to Jo-Philip Wich & Petr Štetiar for assistance in tracking this
down & fixing.

Suggested-by: Jo-Philipp Wich 
Signed-off-by: Petr Štetiar 
Signed-off-by: Kevin Darbyshire-Bryant 
Signed-off-by: Paul Burton 
Cc: linux-mips@vger.kernel.org
Signed-off-by: Sasha Levin

DTS: CI20: Fix bugs in ci20's device tree.

2019-03-13T21:02:34+00:00

[ Upstream commit 1ca1c87f91d9dc50d6a38e2177b2032996e7901c ]

According to the Schematic, the hardware of ci20 leads to uart3,
but not to uart2. Uart2 is miswritten in the original code.

Signed-off-by: Zhou Yanjie 
Signed-off-by: Paul Burton 
Cc: linux-mips 
Cc: linux-kernel 
Cc: devicetree@vger.kernel.org
Cc: robh+dt@kernel.org
Cc: ralf@linux-mips.org
Cc: jhogan@kernel.org
Cc: mark.rutland@arm.com
Cc: malat@debian.org
Cc: ezequiel@collabora.co.uk
Cc: ulf.hansson@linaro.org
Cc: syq 
Cc: jiaxun.yang 
Signed-off-by: Sasha Levin

MIPS: Boston: Disable EG20T prefetch

2019-02-12T18:46:59+00:00

[ Upstream commit 5ec17af7ead09701e23d2065e16db6ce4e137289 ]

The Intel EG20T Platform Controller Hub used on the MIPS Boston
development board supports prefetching memory to optimize DMA transfers.
Unfortunately for unknown reasons this doesn't work well with some MIPS
CPUs such as the P6600, particularly when using an I/O Coherence Unit
(IOCU) to provide cache-coherent DMA. In these systems it is common for
DMA data to be lost, resulting in broken access to EG20T devices such as
the MMC or SATA controllers.

Support for a DT property to configure the prefetching was added a while
back by commit 549ce8f134bd ("misc: pch_phub: Read prefetch value from
device tree if passed") but we never added the DT snippet to make use of
it. Add that now in order to disable the prefetching & fix DMA on the
affected systems.

Signed-off-by: Paul Burton 
Patchwork: https://patchwork.linux-mips.org/patch/21068/
Cc: linux-mips@linux-mips.org
Signed-off-by: Sasha Levin

MIPS: Align kernel load address to 64KB

2019-01-09T16:38:48+00:00

commit bec0de4cfad21bd284dbddee016ed1767a5d2823 upstream.

KEXEC needs the new kernel's load address to be aligned on a page
boundary (see sanity_check_segment_list()), but on MIPS the default
vmlinuz load address is only explicitly aligned to 16 bytes.

Since the largest PAGE_SIZE supported by MIPS kernels is 64KB, increase
the alignment calculated by calc_vmlinuz_load_addr to 64KB.

Signed-off-by: Huacai Chen 
Signed-off-by: Paul Burton 
Patchwork: https://patchwork.linux-mips.org/patch/21131/
Cc: Ralf Baechle 
Cc: James Hogan 
Cc: Steven J . Hill 
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang 
Cc: Zhangjin Wu 
Cc:  # 2.6.36+
Signed-off-by: Greg Kroah-Hartman

kbuild: rename LDFLAGS to KBUILD_LDFLAGS

2018-08-23T23:22:08+00:00

Commit a0f97e06a43c ("kbuild: enable 'make CFLAGS=...' to add
additional options to CC") renamed CFLAGS to KBUILD_CFLAGS.

Commit 222d394d30e7 ("kbuild: enable 'make AFLAGS=...' to add
additional options to AS") renamed AFLAGS to KBUILD_AFLAGS.

Commit 06c5040cdb13 ("kbuild: enable 'make CPPFLAGS=...' to add
additional options to CPP") renamed CPPFLAGS to KBUILD_CPPFLAGS.

For some reason, LDFLAGS was not renamed.

Using a well-known variable like LDFLAGS may result in accidental
override of the variable.

Kbuild generally uses KBUILD_ prefixed variables for the internally
appended options, so here is one more conversion to sanitize the
naming convention.

I did not touch Makefiles under tools/ since the tools build system
is a different world.

Signed-off-by: Masahiro Yamada 
Acked-by: Kirill A. Shutemov 
Reviewed-by: Palmer Dabbelt

mips: dts: mscc: enable spi and NOR flash support on ocelot PCB123

2018-07-31T17:34:34+00:00

Ocelot PCB123 has a SPI NOR connected on its SPI bus.

Signed-off-by: Alexandre Belloni 
Signed-off-by: Paul Burton 
Patchwork: https://patchwork.linux-mips.org/patch/20103/
Cc: Mark Brown 
Cc: James Hogan 
Cc: linux-spi@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Thomas Petazzoni 
Cc: Allan Nielsen

mips: dts: mscc: Add spi on Ocelot

2018-07-31T17:34:08+00:00

Add support for the SPI controller

Signed-off-by: Alexandre Belloni 
Signed-off-by: Paul Burton 
Patchwork: https://patchwork.linux-mips.org/patch/20101/
Cc: Mark Brown 
Cc: James Hogan 
Cc: linux-spi@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Thomas Petazzoni 
Cc: Allan Nielsen

MIPS: mscc: ocelot: add interrupt controller properties to GPIO controller

2018-07-30T17:34:28+00:00

The GPIO controller also serves as an interrupt controller for events
on the GPIO it handles.

An interrupt occurs whenever a GPIO line has changed.

Signed-off-by: Quentin Schulz 
Acked-by: Alexandre Belloni 
Reviewed-by: Linus Walleij 
Signed-off-by: Paul Burton 
Patchwork: https://patchwork.linux-mips.org/patch/20015/
Cc: robh+dt@kernel.org
Cc: mark.rutland@arm.com
Cc: ralf@linux-mips.org
Cc: jhogan@kernel.org
Cc: linux-gpio@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: thomas.petazzoni@bootlin.com

MIPS: ath79: Use the IRQ based GPIO key driver for the buttons

2018-07-28T02:29:53+00:00

Now that the GPIO driver support interrupts we don't need to poll the
buttons.

Signed-off-by: Alban Bedel 
Signed-off-by: Paul Burton 
Patchwork: https://patchwork.linux-mips.org/patch/15283/
Cc: linux-mips@linux-mips.org
Cc: Rob Herring 
Cc: Mark Rutland 
Cc: Ralf Baechle 
Cc: Antony Pavlov 
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

MIPS: ath79: Fix the USB PHY reset names

2018-07-26T18:21:28+00:00

The binding for the USB PHY went thru before the driver. However the
new version of the driver now use the PHY core support for reset, and
this expect the reset to be named "phy". So remove the "usb-" prefix
from the the reset names.

Signed-off-by: Alban Bedel 
Acked-by: Rob Herring 
Signed-off-by: Paul Burton 
Patchwork: https://patchwork.linux-mips.org/patch/15282/
Cc: linux-kernel@vger.kernel.org
Cc: Rob Herring 
Cc: Mark Rutland 
Cc: Ralf Baechle 
Cc: Antony Pavlov 
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org