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Now that driver support for the RK3328's audio codec, and the plumbing
is defined at the SoC level, we can enable analog audio at the board
level.
Enable analog audio by enabling the codec and the I2S interface
connected and the simple-audio-card that binds them together.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20201126073336.30794-4-wens@kernel.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The RK3328-ROC-CC already has HDMI display output enabled. Now that
audio for the HDMI controller is supported, it can be enabled as well.
Enable the simple-audio-card, and the I2S interface the audio is fed
from.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20201126073336.30794-3-wens@kernel.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The board has a standard USB A female port connected to the USB OTG
controller's data pins. Set dr_mode in the OTG controller node to
indicate this usage, instead of having the implementation guess.
Fixes: 2171f4fdac06 ("arm64: dts: rockchip: add roc-rk3328-cc board")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20201126073336.30794-2-wens@kernel.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
idle path. Similar to the entry path the low level idle functions have to
be non-instrumentable.
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Merge tag 'locking-urgent-2020-11-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Thomas Gleixner:
"Two more places which invoke tracing from RCU disabled regions in the
idle path.
Similar to the entry path the low level idle functions have to be
non-instrumentable"
* tag 'locking-urgent-2020-11-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
intel_idle: Fix intel_idle() vs tracing
sched/idle: Fix arch_cpu_idle() vs tracing
Use property name `phy-handle` instead of the deprecated `phy` to
connect eth2 to the PHY.
Signed-off-by: Marek Behún <kabel@kernel.org>
Fixes: 7109d817db2e ("arm64: dts: marvell: add DTS for Turris Mox")
Cc: Gregory CLEMENT <gregory.clement@bootlin.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
There are two SATA ports per CP110. Each of them has a dedicated
interrupt. Describe the real hardware by adding two SATA ports to the
CP110 SATA node.
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sven Auhagen <sven.auhagen@voleatech.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
This adds support for ESPRESSObin-Ultra from Globalscale.
Specifications are similar to the base ESPRESSObin board, with main
difference being being WAN port with PoE capability and 2 additional ethernet ports.
Full specifications:
1x Marvell 64 bit Dual Core ARM A53 Armada 3700 SOC clocked up to 1.2Ghz
1x Topaz 6341 Networking Switch
1GB DDR4
8GB eMMC
1x WAN with 30W POE
4x Gb LAN
1x RTC Clock and battery
1x DC Jack
1x USB 3.0 Type A
1x USB 2.0 Type A
1x SIM NanoSIM card Slot
1x Power Button
4x LED
1x Reset button
1x microUSB for UART
1x M.2 2280 slot for memory
1x 2x2 802.11ac Wi-Fi
1x MiniPCIE slot for Wi-Fi (PCIe interface)
Signed-off-by: Vladimir Vid <vladimir.vid@sartura.hr>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
LED2 is connected to MPP1_2 pin. It is working only on V7 boards.
V5 boards have hw bug which cause that LED2 is non-working.
So enable LED2 only for Espressobin V7 boards.
Note that LED1 is connected to LED_WLAN# pin on miniPCIe card and LED3 to
power supply. Therefore on Espressobin board only LED2 can be controlled
directly from the host. LED1 is possible to control via WiFi card inserted
in miniPCIe slot if driver for particular card supports it.
Signed-off-by: Pali Rohár <pali@kernel.org>
Tested-by: Gérald Kerma <gerald@gk2.net>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Add initial support for the IEI Puzzle-M801 1U Rackmount Network
Appliance board.
The board is based on the quad-core Marvell Armada 8040 SoC and supports
up to 16 GB of DDR4 2400 MHz ECC RAM. It has a PCIe x16 slot (x2 lanes
only) and an M.2 type B slot.
Main system hardware:
2x USB 3.0
4x Gigabit Ethernet
2x SFP+
1x SATA 3.0
1x M.2 type B
1x RJ45 UART
1x SPI flash
1x IEI WT61P803 PUZZLE Microcontroller
1x EPSON RX8010 RTC (used instead of the integrated Marvell RTC controller)
6x SFP+ LED
1x HDD LED
All of the hardware listed above is supported and tested in this port.
Signed-off-by: Luka Kovacic <luka.kovacic@sartura.hr>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Cc: Luka Perkov <luka.perkov@sartura.hr>
Cc: Robert Marko <robert.marko@sartura.hr>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
eMMC definitions in files armada-3720-espressobin-emmc.dts and
armada-3720-espressobin-v7-emmc.dts is same. So move it into common
armada-3720-espressobin.dtsi file with status "disabled".
This change simplifies eMMC variants of DTS files for Espressobin.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andre Heider <a.heider@gmail.com>
Tested-by: Andre Heider <a.heider@gmail.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
The included armada-37xx.dtsi already defines these two aliases.
Signed-off-by: Andre Heider <a.heider@gmail.com>
Reviewed-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Now that the switch ports have a label in the .dtsi, simplify the whole
"switch0" block for the v7 dts files.
Signed-off-by: Andre Heider <a.heider@gmail.com>
Reviewed-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
There are couple of places where INTA interrupt controller
lacks #interrupt-cells property. This leads to warnings of
the type:
arch/arm64/boot/dts/ti/k3-j721e-main.dtsi:147.51-156.5: Warning (interrupt_provider): /bus@100000/main-navss/interrupt-controller@33d00000: Missing #interrupt-cells in interrupt provider
when building TI device-tree files with W=2 warning level.
Fix these.
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Link: https://lore.kernel.org/r/20201127210128.9151-1-nsekhar@ti.com
Our Meltdown mitigation state isn't exposed outside of cpufeature.c,
contrary to the rest of the Spectre mitigation state. As we are going
to use it in KVM, expose a arm64_get_meltdown_state() helper which
returns the same possible values as arm64_get_spectre_v?_state().
Signed-off-by: Marc Zyngier <maz@kernel.org>
Enable the ARM SCMI protocol and the common clock, cpufreq, reset and
sensors drivers. Broadcom STB platforms (ARCH_BRCMSTB) implement SCMI to
provide support for CPU frequency scaling, clock configuration and
temperature and current sensors.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Another set of patches for devicetree files and Arm
SoC specific drivers:
- A fix for OP-TEE shared memory on non-SMP systems
- multiple code fixes for the OMAP platform, including
one regression for the CPSW network driver and a few
runtime warning fixes
- Some DT patches for the Rockchip RK3399 platform,
in particular fixing the MMC device ordering that
recently became nondeterministic with async probe.
- Multiple DT fixes for the Tegra platform, including
a regression fix for suspend/resume on TX2
- A regression fix for a user-triggered fault in the
NXP dpio driver
- A regression fix for a bug caused by an earlier bug
fix in the xilinx firmware driver
- Two more DTC warning fixes
- Sylvain Lemieux steps down as maintainer for the
NXP LPC32xx platform
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'arm-soc-fixes-v5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"Another set of patches for devicetree files and Arm SoC specific
drivers:
- A fix for OP-TEE shared memory on non-SMP systems
- multiple code fixes for the OMAP platform, including one regression
for the CPSW network driver and a few runtime warning fixes
- Some DT patches for the Rockchip RK3399 platform, in particular
fixing the MMC device ordering that recently became
nondeterministic with async probe.
- Multiple DT fixes for the Tegra platform, including a regression
fix for suspend/resume on TX2
- A regression fix for a user-triggered fault in the NXP dpio driver
- A regression fix for a bug caused by an earlier bug fix in the
xilinx firmware driver
- Two more DTC warning fixes
- Sylvain Lemieux steps down as maintainer for the NXP LPC32xx
platform"
* tag 'arm-soc-fixes-v5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (24 commits)
arm64: tegra: Fix Tegra234 VDK node names
arm64: tegra: Wrong AON HSP reg property size
arm64: tegra: Fix USB_VBUS_EN0 regulator on Jetson TX1
arm64: tegra: Correct the UART for Jetson Xavier NX
arm64: tegra: Disable the ACONNECT for Jetson TX2
optee: add writeback to valid memory type
firmware: xilinx: Use hash-table for api feature check
firmware: xilinx: Fix SD DLL node reset issue
soc: fsl: dpio: Get the cpumask through cpumask_of(cpu)
ARM: dts: dra76x: m_can: fix order of clocks
bus: ti-sysc: suppress err msg for timers used as clockevent/source
MAINTAINERS: Remove myself as LPC32xx maintainers
arm64: dts: qcom: clear the warnings caused by empty dma-ranges
arm64: dts: broadcom: clear the warnings caused by empty dma-ranges
ARM: dts: am437x-l4: fix compatible for cpsw switch dt node
arm64: dts: rockchip: Reorder LED triggers from mmc devices on rk3399-roc-pc.
arm64: dts: rockchip: Assign a fixed index to mmc devices on rk3399 boards.
arm64: dts: rockchip: Remove system-power-controller from pmic on Odroid Go Advance
arm64: dts: rockchip: fix NanoPi R2S GMAC clock name
ARM: OMAP2+: Manage MPU state properly for omap_enter_idle_coupled()
...
Not counting TnD, which KVM doesn't currently consider, CSSELR_EL1
can have a maximum value of 0b1101 (13), which corresponds to an
instruction cache at level 7. With CSSELR_MAX set to 12 we can
only select up to cache level 6. Change it to 14.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201126134641.35231-2-drjones@redhat.com
We currently try to emit *.init.rodata.* twice, once in INIT_DATA, and once
in the line immediately following it. As the two section definitions are
identical, the latter is redundant and can be dropped.
This patch drops the redundant *.init.rodata.* section definition.
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/1605750340-910-1-git-send-email-tangyouling@loongson.cn
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
- Fix alignment of the new HYP sections
- Fix GICR_TYPER access from userspace
S390:
- do not reset the global diag318 data for per-cpu reset
- do not mark memory as protected too early
- fix for destroy page ultravisor call
x86:
- fix for SEV debugging
- fix incorrect return code
- fix for "noapic" with PIC in userspace and LAPIC in kernel
- fix for 5-level paging
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"ARM:
- Fix alignment of the new HYP sections
- Fix GICR_TYPER access from userspace
S390:
- do not reset the global diag318 data for per-cpu reset
- do not mark memory as protected too early
- fix for destroy page ultravisor call
x86:
- fix for SEV debugging
- fix incorrect return code
- fix for 'noapic' with PIC in userspace and LAPIC in kernel
- fix for 5-level paging"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: x86/mmu: Fix get_mmio_spte() on CPUs supporting 5-level PT
KVM: x86: Fix split-irqchip vs interrupt injection window request
KVM: x86: handle !lapic_in_kernel case in kvm_cpu_*_extint
MAINTAINERS: Update email address for Sean Christopherson
MAINTAINERS: add uv.c also to KVM/s390
s390/uv: handle destroy page legacy interface
KVM: arm64: vgic-v3: Drop the reporting of GICR_TYPER.Last for userspace
KVM: SVM: fix error return code in svm_create_vcpu()
KVM: SVM: Fix offset computation bug in __sev_dbg_decrypt().
KVM: arm64: Correctly align nVHE percpu data
KVM: s390: remove diag318 reset code
KVM: s390: pv: Mark mm as protected after the set secure parameters and improve cleanup
__extended_idmap_trampoline() was removed a long time ago by
3421e9d88d7a ("arm64: KVM: Simplify HYP init/teardown") so remove the
unused function prototype.
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201118194402.2892-4-will@kernel.org
kvm_arch_vm_ioctl_check_extension() is only called from
kvm_vm_ioctl_check_extension(), so we can inline it and remove the extra
function.
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201118194402.2892-3-will@kernel.org
'struct kvm_arch_memory_slot' isn't part of the user ABI, so move it out
of the uapi/ headers in case we start using it in future and accidentally
back ourselves into a corner.
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201118194402.2892-2-will@kernel.org
- Fix kerneldoc warnings generated by ACPI IORT code
- Fix pte_accessible() so that access flag is ignored
- Fix missing header #include
- Fix loss of software dirty bit across pte_wrprotect() when HW DBM is enabled
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"The main changes are relating to our handling of access/dirty bits,
where our low-level page-table helpers could lead to stale young
mappings and loss of the dirty bit in some cases (the latter has not
been observed in practice, but could happen when clearing "soft-dirty"
if we enabled that). These were posted as part of a larger series, but
the rest of that is less urgent and needs a v2 which I'll get to
shortly.
In other news, we've now got a set of fixes to resolve the
lockdep/tracing problems that have been plaguing us for a while, but
they're still a bit "fresh" and I plan to send them to you next week
after we've got some more confidence in them (although initial CI
results look good).
Summary:
- Fix kerneldoc warnings generated by ACPI IORT code
- Fix pte_accessible() so that access flag is ignored
- Fix missing header #include
- Fix loss of software dirty bit across pte_wrprotect() when HW DBM
is enabled"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: pgtable: Ensure dirty bit is preserved across pte_wrprotect()
arm64: pgtable: Fix pte_accessible()
ACPI/IORT: Fix doc warnings in iort.c
arm64/fpsimd: add <asm/insn.h> to <asm/kprobes.h> to fix fpsimd build
Provide support for additional kernel command line parameters to be
concatenated onto the end of the command line provided by the
bootloader. Additional parameters are specified in the CONFIG_CMDLINE
option when CONFIG_CMDLINE_EXTEND is selected, matching other
architectures and leveraging existing support in the FDT and EFI stub
code.
Special care must be taken for the arch-specific nokaslr parsing. Search
the bootargs FDT property and the CONFIG_CMDLINE when
CONFIG_CMDLINE_EXTEND is in use.
There are a couple of known use cases for this feature:
1) Switching between stable and development kernel versions, where one
of the versions benefits from additional command line parameters,
such as debugging options.
2) Specifying additional command line parameters, for additional tuning
or debugging, when the bootloader does not offer an interactive mode.
Signed-off-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Link: https://lore.kernel.org/r/20200921191557.350256-3-tyhicks@linux.microsoft.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Don't ask for *the* command line string to search for "nokaslr" in
kaslr_early_init(). Instead, tell a helper function to search all the
appropriate command line strings for "nokaslr" and return the result.
This paves the way for searching multiple command line strings without
having to concatenate the strings in early init.
Signed-off-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Link: https://lore.kernel.org/r/20200921191557.350256-2-tyhicks@linux.microsoft.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
These changes are mostly minor fixes across the board, but they also
enable PMUs on Tegra186 and enable SATA support on Jetson TX2.
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Merge tag 'tegra-for-5.11-arm64-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/dt
arm64: tegra: Device tree changes for v5.11-rc1
These changes are mostly minor fixes across the board, but they also
enable PMUs on Tegra186 and enable SATA support on Jetson TX2.
* tag 'tegra-for-5.11-arm64-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
arm64: tegra: Fix Tegra194 HDA {clock,reset}-names ordering
arm64: tegra: Enable AHCI on Jetson TX2
arm64: tegra: Change order of SATA resets for Tegra132 and Tegra210
arm64: tegra: Add XUSB pad controller interrupt
arm64: tegra: Rename ADMA device nodes for Tegra210
arm64: tegra: Hook up edp interrupt on Tegra132 SOCTHERM
arm64: tegra: Add missing hot temperatures to Tegra210 thermal-zones
arm64: tegra: Add missing gpu-throt-level to Tegra210 soctherm
arm64: tegra: Add missing hot temperatures to Tegra132 thermal-zones
arm64: tegra: Fix DT binding for IO High Voltage entry
arm64: tegra: Fix GIC400 missing GICH/GICV register regions
arm64: tegra: Add missing CPU PMUs on Tegra186
arm64: tegra: Fix Tegra234 VDK node names
arm64: tegra: Wrong AON HSP reg property size
arm64: tegra: Fix USB_VBUS_EN0 regulator on Jetson TX1
arm64: tegra: Correct the UART for Jetson Xavier NX
arm64: tegra: Disable the ACONNECT for Jetson TX2
Link: https://lore.kernel.org/r/20201127144329.124891-5-thierry.reding@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- PCIe endpoint support for the R-Car H3 ES2.0+ SoC.
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Merge tag 'renesas-arm-dt-for-v5.11-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into arm/dt
Renesas ARM DT updates for v5.11 (take two)
- PCIe endpoint support for the R-Car H3 ES2.0+ SoC.
* tag 'renesas-arm-dt-for-v5.11-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel:
arm64: dts: renesas: r8a77951: Add PCIe EP nodes
Link: https://lore.kernel.org/r/20201127132155.77418-2-geert@linux-m68k.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The Tegra234 VDK support that was introduced in v5.10-rc1 is now enabled
by default.
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Merge tag 'tegra-for-5.11-arm64-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/defconfig
arm64: tegra: Default configuration changes for v5.11-rc1
The Tegra234 VDK support that was introduced in v5.10-rc1 is now enabled
by default.
* tag 'tegra-for-5.11-arm64-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
arm64: defconfig: Enable Tegra234 support
Link: https://lore.kernel.org/r/20201127144329.124891-6-thierry.reding@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
MDI_TP_P0 (gpio51) is used by pwm1 and uart2 (uart1 on gpio-header)
MDI_RP_P4 (gpio67) is used by pwm4 and spi1
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Link: https://lore.kernel.org/r/20201016204019.2606-3-linux@fw-web.de
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
mt7622 only supports 6 pwm-channels so drop pwm7
third pwm (pwm2) is inverted and connected to fan-socket
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Link: https://lore.kernel.org/r/20201016204019.2606-2-linux@fw-web.de
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
- Fix alignment of the new HYP sections
- Fix GICR_TYPER access from userspace
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Merge tag 'kvmarm-fixes-5.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master
KVM/arm64 fixes for v5.10, take #4
- Fix alignment of the new HYP sections
- Fix GICR_TYPER access from userspace
J7200 main_i2c1 is connected to the i2c bus on the CPB marked as main_i2c3
The i2c1 devices on the CPB are _not_ connected to the SoC, they are not
usable with the J7200 SOM.
Correct the expander name from exp4 to exp3 and at the same time add the
line names as well.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Link: https://lore.kernel.org/r/20201120073533.24486-3-peter.ujfalusi@ti.com
The J7200 SOM have additional io expander which is used to control several
SOM level muxes to make sure that the correct signals are routed to the
correct pin on the SOM <-> CPB connectors.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Link: https://lore.kernel.org/r/20201120073533.24486-2-peter.ujfalusi@ti.com
We currently gate the update of the PMU state on the PMU being "ready".
The "ready" state is only set to true when the first vcpu run is
successful, and if it isn't, we never reach the update code.
So the "ready" state is never the right thing to check for, and it
should instead be the presence of the PMU feature, which makes
a bit more sense.
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
The handling of traps in access_pmu_evcntr() has a couple of
omminous "else return false;" statements that don't make any sense:
the decoding tree coverse all the registers that trap to this handler,
and returning false implies that we change PC, which we don't.
Get rid of what is evidently dead code.
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
There is no RAZ/WI handling allowed for the PMU registers in the
ARMv8 architecture. Nobody can remember how we cam to the conclusion
that we could do this, but the ARMv8 ARM is pretty clear that we cannot.
Remove the RAZ/WI handling of the PMU system registers when it is
not configured.
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
The ARMv8 architecture says that in the absence of FEAT_PMUv3,
all the PMU-related register generate an UNDEF. Let's make
sure that all our PMU handers catch this case by hooking into
check_pmu_access_disabled(), and add checks in a couple of
other places.
Note that we still cannot deliver an exception into the guest
as the offending cases are already caught by the RAZ/WI handling.
But this puts us one step away to architectural compliance.
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
We accept to configure a PMU when a vcpu is created, even if the
HW (or the host) doesn't support it. This results in failures
when attributes get set, which is a bit odd as we should have
failed the vcpu creation the first place.
Move the check to the point where we check the vcpu feature set,
and fail early if we cannot support a PMU. This further simplifies
the attribute handling.
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
We always expose the HW view of PMU in ID_AA64FDR0_EL1.PMUver,
even when the PMU feature is disabled, while the architecture
says that FEAT_PMUv3 not being implemented should result in this
field being zero.
Let's follow the architecture's guidance.
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
When enabling the PMU in kvm_arm_pmu_v3_enable(), KVM returns early if the
PMU flag created is false and skips any other checks. Because PMU emulation
is gated only on the VCPU feature being set, this makes it possible for
userspace to get away with setting the VCPU feature but not doing any
initialization for the PMU. Fix it by returning an error when trying to run
the VCPU if the PMU hasn't been initialized correctly.
The PMU is marked as created only if the interrupt ID has been set when
using an in-kernel irqchip. This means the same check in
kvm_arm_pmu_v3_enable() is redundant, remove it.
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201126144916.164075-1-alexandru.elisei@arm.com
There are a number of places where we check for the KVM_ARM_VCPU_PMU_V3
feature. Wrap this check into a new kvm_vcpu_has_pmu(), and use
it at the existing locations.
No functional change.
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
