do
unconditionally for controllers in case others have the same behavior.
Signed-off-by: Hector Martin
---
drivers/firewire/ohci.c | 8 +++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 8bf89267dc25..d731b413cb2c 100644
support
* Fixed many style issues, bugs, and other nits
Note: this keeps the `apple,arm-platform` compatible, which is now used
to gate the OF nonposted-mmio logic to Apple platforms only.
Hector Martin (24):
dt-bindings: vendor-prefixes: Add apple prefix
dt-bindings: arm: apple: Add bindings for Ap
This introduces bindings for all three 2020 Apple M1 devices:
* apple,j274 - Mac mini (M1, 2020)
* apple,j293 - MacBook Pro (13-inch, M1, 2020)
* apple,j313 - MacBook Air (M1, 2020)
Signed-off-by: Hector Martin
---
.../devicetree/bindings/arm/apple.yaml| 36
This is different from the legacy AAPL prefix used on PPC, but
consensus is that we prefer `apple` for these new platforms.
Signed-off-by: Hector Martin
---
Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree
These are the CPU cores in the "Apple Silicon" M1 SoC.
Signed-off-by: Hector Martin
---
Documentation/devicetree/bindings/arm/cpus.yaml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml
b/Documentation/devicetree/bindings/arm/cpus.
This allows the devicetree to correctly represent the available set of
timers, which varies from device to device, without the need for fake
dummy interrupts for unavailable slots.
Also add the hyp-virt timer/PPI, which is not currently used, but worth
representing.
Signed-off-by: Hector Martin
code can pick the right one.
This also adds the hyp-virt timer/interrupt, which was previously not
expressed in the fixed 4-interrupt form.
Signed-off-by: Hector Martin
---
.../devicetree/bindings/timer/arm,arch_timer.yaml | 14 ++
1 file changed, 14 insertions(+)
diff --git a
The implementor will be used to condition the FIQ support quirk.
The specific CPU types are not used at the moment, but let's add them
for documentation purposes.
Signed-off-by: Hector Martin
---
arch/arm64/include/asm/cputype.h | 6 ++
1 file changed, 6 insertions(+)
diff --git a
introducing devm_ioremap_np(),
and making devm_ioremap_resource() automatically select this variant
when the resource has the IORESOURCE_MEM_NONPOSTED flag set.
Signed-off-by: Hector Martin
---
include/asm-generic/io.h | 8 +++-
include/linux/io.h | 2 ++
include/linux/ioport.h | 1
need FIQs,
or if newer SoCs are released without the FIQ requirement, we can
revisit the condition.
Signed-off-by: Hector Martin
---
arch/arm64/Kconfig | 11 +++
arch/arm64/include/asm/cpucaps.h | 3 ++-
arch/arm64/kernel/cpufeature.c | 14 ++
3 files changed
discriminate between IRQs and FIQs by checking
the ISR_EL1 system register.
Signed-off-by: Hector Martin
---
arch/arm64/include/asm/assembler.h | 6 +++---
arch/arm64/include/asm/daifflags.h | 4 ++--
arch/arm64/include/asm/irqflags.h | 19 +++
arch/arm64/kernel/entry.S | 6
Signed-off-by: Hector Martin
---
arch/arm64/kernel/entry.S | 21 ++---
1 file changed, 18 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index ba5f9aa379ce..bcfd1ac72636 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel
This is used on Apple ARM platforms, which require most MMIO
(except PCI devices) to be mapped as nGnRnE.
Signed-off-by: Hector Martin
---
arch/arm64/include/asm/io.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 5ea8656a2030
AIC is the Apple Interrupt Controller found on Apple ARM SoCs, such as
the M1.
Signed-off-by: Hector Martin
---
.../interrupt-controller/apple,aic.yaml | 88 +++
MAINTAINERS | 1 +
.../interrupt-controller/apple-aic.h | 15
.
This mechanism is currently restricted to Apple ARM platforms, as an
optimization.
Signed-off-by: Hector Martin
---
drivers/of/address.c | 72 --
include/linux/of_address.h | 1 +
2 files changed, 71 insertions(+), 2 deletions(-)
diff --git a/drivers/of/ad
Apple ARM64 SoCs have a ton of vendor-specific registers we're going to
have to deal with, and those don't really belong in sysreg.h with all
the architectural registers. Make a new home for them, and add some
registers which are useful for early bring-up.
Signed-off-by: Hec
timer).
This patch introduces basic UP irqchip support, without SMP/IPI support.
Signed-off-by: Hector Martin
---
MAINTAINERS | 2 +
drivers/irqchip/Kconfig | 10 +
drivers/irqchip/Makefile| 1 +
drivers/irqchip/irq-apple-aic.c | 647
avoids excessive branching
control flow and mirrors s3c64xx_serial_startup. tx_claimed and
rx_claimed are only used in the S3C24XX functions.
Signed-off-by: Hector Martin
---
drivers/tty/serial/samsung_tty.c | 69
1 file changed, 53 insertions(+), 16 deletions
This adds a Kconfig option to toggle support for Apple ARM SoCs.
At this time this targets the M1 and later "Apple Silicon" Mac SoCs.
Signed-off-by: Hector Martin
---
arch/arm64/Kconfig.platforms | 8
arch/arm64/configs/defconfig | 1 +
2 files changed, 9 insertions(+)
di
makes more
sense to do it here in the UART driver instead of introducing a
whole fdt nonposted-mmio resolver just for earlycon/fixmap.
Suggested-by: Arnd Bergmann
Signed-off-by: Hector Martin
---
drivers/tty/serial/samsung_tty.c | 17 +
1 file changed, 17 insertions(+)
diff
return value, which should use IS_ERR().
Signed-off-by: Hector Martin
---
drivers/tty/serial/samsung_tty.c | 25 +++--
1 file changed, 3 insertions(+), 22 deletions(-)
diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index 821cd0e4f870
as a distinct type.
Signed-off-by: Hector Martin
---
drivers/tty/serial/samsung_tty.c | 131 ++-
1 file changed, 77 insertions(+), 54 deletions(-)
diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index 6b661f3ec1ae..21955be680a4 100644
Apple SoCs run firmware that sets up a simplefb-compatible framebuffer
for us. Add a compatible for it, and two missing supported formats.
Signed-off-by: Hector Martin
---
.../devicetree/bindings/display/simple-framebuffer.yaml | 5 +
1 file changed, 5 insertions(+)
diff --git a
Apple mobile devices originally used Samsung SoCs (starting with the
S5L8900), and their current in-house SoCs continue to use compatible
UART peripherals. We'll call this UART variant apple,s5l-uart.
Signed-off-by: Hector Martin
---
Documentation/devicetree/bindings/serial/samsung_uart
the
FIFO with data directly.
Signed-off-by: Hector Martin
---
drivers/tty/serial/Kconfig | 2 +-
drivers/tty/serial/samsung_tty.c | 228 +--
include/linux/serial_s3c.h | 16 +++
3 files changed, 236 insertions(+), 10 deletions(-)
diff --git a/drivers
This currently supports:
* SMP (via spin-tables)
* AIC IRQs
* Serial (with earlycon)
* Framebuffer
A number of properties are dynamic, and based on system firmware
decisions that vary from version to version. These are expected
to be filled in by the loader.
Signed-off-by: Hector Martin
x27; logic isn't necessary here,
if either handler ran we are always going to return IRQ_HANDLED.
* Rename s3c24xx_serial_rx_chars to s3c24xx_serial_rx_irq for
consistency with the above. All it does now is call two other
functions anyway.
Signed-off-by: Hector Martin
---
dri
YPE_CP15;
You probably didn't want to drop this line, did you?
Ouch. Thanks for catching that.
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
look at v2, or wait for v3?
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
On 16/02/2021 01.12, gregkh wrote:
On Tue, Feb 16, 2021 at 12:57:27AM +0900, Hector Martin wrote:
On 15/02/2021 22.22, gregkh wrote:
On Mon, Feb 15, 2021 at 01:57:39PM +0100, Arnd Bergmann wrote:
(adding maintainers for the serial/irqchip/clocksource drivers and
arch/arm64 to cc)
I would
dn't
hurt to try to add minimal error handling here.
There's no logic to clean this up in earlycon itself anyway, so there's
no point in trying to do it for the override. If another earlycon driver
ends up getting instantiated for some reason, it will override the
mapping with a
On 16/02/2021 02.48, Krzysztof Kozlowski wrote:
On Mon, Feb 15, 2021 at 09:16:50PM +0900, Hector Martin wrote:
+description: |
+ Apple ARM ("Apple Silicon") platforms should contain compatible strings
+ in the following format:
+
+ - apple,j274 (board/device ID)
+ - apple,m1
On 16/02/2021 03.23, Tony Lindgren wrote:
* Hector Martin [210215 12:18]:
This allows the devicetree to correctly represent the available set of
timers, which varies from device to device, without the need for fake
dummy interrupts for unavailable slots.
I like the idea of using interrupt
:
return ioremap_np(offset, size) ?: ioremap(offset, size);
Today I learned that this one is kosher in kernel code. Handy! Let's go
with that.
Acked-by: Will Deacon
Thanks!
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
On 08/04/2021 06.09, Will Deacon wrote:
Couple of stale comment nits:
[...]
But with that:
Acked-by: Will Deacon
Fixed those for the PR, thanks!
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
ebsite for more information on the project:
https://asahilinux.org/
Signed-off-by: Hector Martin
Arnd Bergmann (1):
docs: driver-api: device-io: Document I/O access functions
Hector Martin (17):
dt-bindings: vendor-prefixes: A
ould be made with care, as we don't want to cause a regression.
However, much of the code (allocation strategies, FAT handling, etc)
should be the same or very similar, so it seems stupid to start from
scratch.
Comments?
--
Hector Martin ([EMAIL PROTECTED])
Public Key: http://www.marcansoft.co
Diego Calleja wrote:
> FUSE could be an acceptable solution.
Not really. Booting Xbox-Linux from an image file on a FATX partition is
common. I don't think FUSE would work very well there.
--
Hector Martin ([EMAIL PROTECTED])
Public Key: http://www.marcansoft.com/marcan.asc
-
To uns
On 22/02/2021 05.41, Andy Shevchenko wrote:
Hector, I would like to be cc’ed in the next version
Noted, thanks!
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
On 22/02/2021 00.20, Hector Martin wrote:
I haven't tested things at EL0 yet, but it looks like the stateful
instructions known to be usable in EL0 (AMX) already default to trap on
this platform, so we should be safe there. Everything else looks like it
probably either shouldn't work
On 10/02/2021 19.19, Tony Lindgren wrote:
* Hector Martin 'marcan' [210208 12:05]:
On 08/02/2021 20.04, Krzysztof Kozlowski wrote:
...
+ clk24: clk24 {
Just "clock". Node names should be generic.
Really? Almost every other device device tree uses unique cloc
On 10/02/2021 20.34, Tony Lindgren wrote:
* Hector Martin [210210 11:14]:
That means it'll end up like this (so that we can have more than one
fixed-clock):
clocks {
#address-cells = <1>;
#size-cells = <0>;
clk123: clock@0 {
...
reg = <0&
arm64's ioremap look up the
address in a structure populated from this.
As an additional wrinkle, earlycon is almost certainly going to need a
special path to handle this very early, before OF stuff is available; it
also uses fixmap instead of ioremap, which has its own idea about what
type of mapping to use.
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
river as a property instead of creating a fake
clock.
In our case it's an existing driver (with patches) that is already
integrated with the clock infrastructure, so it makes sense to use a
fixed-clock instead of just an ad-hoc property.
--
Hector Martin (mar...@marcan.st)
Public
ase delete this bit, though? Now that we say IRQ and FIQ are
masked/unmasked together, I don't think the rest is necessary to
understand the masking logic, and it's one less thing to keep in sync
with changes to the entry code.
Gone :)
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
c blurb on IO mapping modes, much like x86 has one...
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
On 16/02/2021 03.06, Krzysztof Kozlowski wrote:
On Mon, Feb 15, 2021 at 09:17:05PM +0900, Hector Martin wrote:
+static void s3c64xx_serial_shutdown(struct uart_port *port)
+{
+ struct s3c24xx_uart_port *ourport = to_ourport(port);
+
+ free_irq(port->irq, ourport);
+
+ wr_r
_dbg(port->dev, "stopping rx\n");
- if (s3c24xx_serial_has_interrupt_mask(port))
- s3c24xx_set_bit(port, S3C64XX_UINTM_RXD,
- S3C64XX_UINTM);
The same.
Reverted those two lines for v3.
--
Hector Martin (m
On 16/02/2021 03.40, Krzysztof Kozlowski wrote:
On Mon, Feb 15, 2021 at 09:17:07PM +0900, Hector Martin wrote:
* Split out s3c24xx_serial_tx_chars from s3c24xx_serial_tx_irq,
where only the latter acquires the port lock.
I miss here information why you do all this.
Added an explanation
on next submission, so Greg does not pick them too fast.
I unfortunately don't have any Exynos devices where I could test the
code (I have a couple but no serial connections, and I have no idea if
mailine would run on them). I'll mark v3 as RFT.
--
Hector Martin (mar...@marcan.st)
On 16/02/2021 04.13, Krzysztof Kozlowski wrote:
On Mon, Feb 15, 2021 at 09:17:10PM +0900, Hector Martin wrote:
@@ -389,10 +396,12 @@ static void enable_tx_pio(struct s3c24xx_uart_port
*ourport)
ucon = rd_regl(port, S3C2410_UCON);
ucon &= ~(S3C64XX_UCON_TXMODE_
d a minor related one: should init_gic_priority_masking() WARN if FIQ is
masked too? This probably goes with the above.
I think it should, yes.
Done for v3 then. Thanks!
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
Linux/linux/tree/upstream-bringup-v3
[3] https://github.com/AsahiLinux/linux/tree/upstream-bringup-v2.5
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
he project:
https://asahilinux.org/
Hector Martin (18):
dt-bindings: vendor-prefixes: add AAPL prefix
dt-bindings: arm: cpus: Add AAPL,firestorm & icestorm compatibles
dt-bindings: arm: AAPL: Add bindings for Apple ARM platforms
arm64: Kconfig: Introduce CONFIG_ARCH_APPLE
tty: seria
This adds a Kconfig option to toggle support for Apple ARM SoCs.
At this time this targets the M1 and later "Apple Silicon" Mac SoCs.
Signed-off-by: Hector Martin
---
arch/arm64/Kconfig.platforms | 7 +++
1 file changed, 7 insertions(+)
diff --git a/arch/arm64/Kconfig.platfo
Amusingly, this wasn't yet documented, even though this vendor prefix
has been used since time immemorial on PPC.
Signed-off-by: Hector Martin
---
Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bin
the
FIFO with data directly.
Signed-off-by: Hector Martin
---
drivers/tty/serial/samsung_tty.c | 297 +++
include/linux/serial_s3c.h | 16 ++
include/uapi/linux/serial_core.h | 3 +
3 files changed, 280 insertions(+), 36 deletions(-)
diff --git a/drivers
Apple mobile devices originally used Samsung SoCs (starting with the
S5L8900), and their current in-house SoCs continue to use compatible
UART peripherals. We'll call this UART variant AAPL,s5l-uart.
Signed-off-by: Hector Martin
---
Documentation/devicetree/bindings/serial/samsung_uart.yam
These are not used at the moment, but let's add them for documentation
purposes.
Signed-off-by: Hector Martin
---
arch/arm64/include/asm/cputype.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h
index 2084a03
Apple M1 SoCs are distant descendants of Samsung SoCs and use similar
UART blocks.
Signed-off-by: Hector Martin
---
drivers/tty/serial/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 34a2899e69c0
which do not need FIQs,
or if newer SoCs are released without the FIQ requirement, we can
revisit the condition.
Signed-off-by: Hector Martin
---
arch/arm64/Kconfig | 10 +
arch/arm64/include/asm/cpucaps.h| 3 ++-
arch/arm64/include/asm/cpufeature.h | 6 ++
arch
oke mechanism to
the DT, and that it does not let device drivers actually select the
IO mode, which might be desirable in the future anyway for some
devices.
All discussion and additional ideas welcome.
Signed-off-by: Hector Martin
---
arch/arm64/include/asm/io.h | 9 -
1 file
AIC is the Apple Interrupt Controller found on Apple ARM SoCs, such as
the M1.
Signed-off-by: Hector Martin
---
.../interrupt-controller/AAPL,aic.yaml| 88 +++
MAINTAINERS | 2 +
.../interrupt-controller/apple-aic.h | 14 +++
3
Apple SoCs run firmware that sets up a simplefb-compatible framebuffer
for us. Add a compatible for it, and two missing supported formats.
Signed-off-by: Hector Martin
---
.../devicetree/bindings/display/simple-framebuffer.yaml | 5 +
1 file changed, 5 insertions(+)
diff --git a
This currently supports:
* SMP (via spin-tables)
* AIC IRQs
* Serial (with earlycon)
* Framebuffer
A number of properties are dynamic, and based on system firmware
decisions that vary from version to version. These are expected
to be filled in by the loader.
Signed-off-by: Hector Martin
Since the hardware IRQ controller only supports two IPIs per CPU and
Linux needs more, we implement 32 virtual IPIs using software and funnel
them through a single hardware IPI.
Signed-off-by: Hector Martin
---
drivers/irqchip/irq-apple-aic.c | 195 +++-
1 file
timer).
This patch introduces basic UP irqchip support, without SMP/IPI support.
Signed-off-by: Hector Martin
---
MAINTAINERS | 1 +
drivers/irqchip/Kconfig | 10 +
drivers/irqchip/Makefile| 1 +
drivers/irqchip/irq-apple-aic.c | 316
These are the CPU cores in the "Apple Silicon" M1 SoC.
Signed-off-by: Hector Martin
---
Documentation/devicetree/bindings/arm/cpus.yaml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml
b/Documentation/devicetree/bindings/arm/cpus.
This introduces bindings for all three 2020 Apple M1 devices:
* AAPL,j274 - Mac mini (M1, 2020)
* AAPL,j293 - MacBook Pro (13-inch, M1, 2020)
* AAPL,j313 - MacBook Air (M1, 2020)
Signed-off-by: Hector Martin
---
.../devicetree/bindings/arm/AAPL.yaml | 36
ad of a platform match.
Any other ideas?
Signed-off-by: Hector Martin
---
arch/arm64/include/asm/fixmap.h | 10 +-
arch/arm64/kernel/setup.c | 12
2 files changed, 21 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/fixmap.h b/arch/arm64/includ
drivers can discriminate between IRQs and FIQs by checking
the ISR_EL1 system register.
Signed-off-by: Hector Martin
---
arch/arm64/include/asm/assembler.h | 4
arch/arm64/include/asm/daifflags.h | 7 +++
arch/arm64/include/asm/irqflags.h | 17 +
arch/arm64/kernel
All currently supported Apple ARM SoCs (and possibly all future ones
too) require FIQs.
Signed-off-by: Hector Martin
---
arch/arm64/Kconfig.platforms | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index e3e3bd2c4374..8182d78e8e23
On 08/02/2021 21.40, Arnd Bergmann wrote:
On Mon, Feb 8, 2021 at 1:13 PM Krzysztof Kozlowski wrote:
On Mon, Feb 08, 2021 at 08:56:53PM +0900, Hector Martin 'marcan' wrote:
On 08/02/2021 20.04, Krzysztof Kozlowski wrote:
apple
Don't make things different for this one platfor
al timer with VHE right now. I guess it's
worth describing it in the binding and dts, even if the driver never
selects it...?
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
On 08/02/2021 20.36, Marc Zyngier wrote:
On Mon, 08 Feb 2021 10:29:23 +,
Arnd Bergmann wrote:
On Mon, Feb 8, 2021 at 10:25 AM Marc Zyngier wrote:
On Thu, 04 Feb 2021 20:39:48 +, Hector Martin wrote:
+{
+ return readl(ic->base + reg);
Please consider using the _rela
with an unbootable
system, and not having interrupts is one thing that makes it really hard
to debug...
Sounds good, I'll flip it over.
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
Aside from the lack of programmable priority, the lack of convenient
masking for per-CPU interrupts is a bit of an issue...
Yeah... we'll see how that goes.
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
hat to a
a separate uart_ops too.
Ack on all the other comments, I'll make the changes for v2.
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
my server doesn't do DKIM yet, and they
went through a mailing list? It's probably time to set that up...
Either way, certainly not for Apple SoCs; I'll get rid of IRQF_SHARED
for v2.
Please send a v2 after fixing issues pointed out by kbuild.
Will do, already have those fixe
On 08/02/2021 19.34, Marc Zyngier wrote:
On 2021-02-07 09:12, Hector Martin 'marcan' wrote:
On 06/02/2021 22.15, Marc Zyngier wrote:
Do you actually need a new port type here? Looking at the driver
itself, it is mainly used to work out the IRQ model. Maybe introducing
a new irq_typ
On 09/02/2021 03.12, Krzysztof Kozlowski wrote:
Mentioned grep brings only one result:
arch/powerpc/platforms/powermac/pic.c: * cases where the APPL,interrupts
property is completely
You want to grep for 'AAPL', not 'APPL' :-)
--
Hector Martin (mar...@marcan.st)
Public
get rid of any code in there that
cares about the uapi-visible port type (other than setting it correctly
for those that do exist, to maintain current behavior), and just make
everything else use PORT_8250 for that?
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
s such const pointer.
Still during s3c24xx_serial_probe() correct ops would have to be
assigned, but at least all ops are easily visible.
Roger, will do this for v2.
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
after
subsequently issuing an isb, makes me think all this FIQ stuff is
seriously deeply tied into the instruction pipeline. It's probably not
an IRQ line any more...
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
dware behavior is to block nGnRE everywhere except in those
ranges (i.e. the nGnRnE fault takes precedence over other errors, like
the address not existing at all).
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
w if that's expected or something to be
avoided.
If this is intended to be kept in sync and be fully comprehensive, I
might as well start planning out our longer term DT maintenance strategy
around that (which might involve using that tree in our bootloader).
--
Hector Martin (mar...@mar
that.
Ack. I hope we can basically acknowledge breaking DT changes without too
much fuss at this early stage of bring-up, until things calm down a bit
and we have real users who would complain :) (not that I won't try to
avoid it).
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
r_hw + AIC_NR_FIQ + AIC_NR_IPI,
+ &aic_irq_domain_ops, irqc);
Please keep assignments on a single line.
I think this one was one of those clang-format things :-).
I'll fix it and watch out for similar things.
+ for (i = 0; i < BITS_TO_LONGS(irqc->nr_hw); i++)
long is 64bit on arm64, so this loop is unlikely to do what you
want. Consider using BITS_TO_U32.
Ha, nice catch. Thanks!
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
n require the
drivers for this platform to go through devm_ioremap_resource()
or similar.
This sounds reasonable. For setting such a flag, I guess looking for a
property (inherited from parents) would make sense. `mmio-map-mode =
"nonposted"` or something like that?
--
Hector Martin (mar...@marcan.st)
Public Key: https://mrcn.st/pub
() on 32-bit as well, and I would keep
that separate from this series.
Sounds good; I'm adding a patch to adjust the generic implementation and
remove the arm64 one in v4, and we can then complete the cleanup for
other arches later.
--
Hector Martin (mar...@marcan.st)
Public Key: https://mr
This introduces bindings for all three 2020 Apple M1 devices:
* apple,j274 - Mac mini (M1, 2020)
* apple,j293 - MacBook Pro (13-inch, M1, 2020)
* apple,j313 - MacBook Air (M1, 2020)
Signed-off-by: Hector Martin
---
.../devicetree/bindings/arm/apple.yaml| 64
ring yak.
* Moved GIC registers to sysregs.h instead of including that in the AIC
driver.
* Added _EL1 suffixes to Apple sysregs.
* Addressed further review comments and feedback.
Arnd Bergmann (1):
docs: driver-api: device-io: Document I/O access functions
Hector Martin (25):
dt-bindings: vend
From: Arnd Bergmann
This adds more detailed descriptions of the various read/write
primitives available for use with I/O memory/ports.
Signed-off-by: Arnd Bergmann
Signed-off-by: Hector Martin
---
Documentation/driver-api/device-io.rst | 138 +
1 file changed, 138
This allows the devicetree to correctly represent the available set of
timers, which varies from device to device, without the need for fake
dummy interrupts for unavailable slots.
Also add the hyp-virt timer/PPI, which is not currently used, but worth
representing.
Signed-off-by: Hector Martin
code can pick the right one.
This also adds the hyp-virt timer/interrupt, which was previously not
expressed in the fixed 4-interrupt form.
Signed-off-by: Hector Martin
---
.../devicetree/bindings/timer/arm,arch_timer.yaml | 14 ++
1 file changed, 14 insertions(+)
diff --git a
whether there are many more such nuggets to be found...
Reported-by: Hector Martin
Signed-off-by: Marc Zyngier
---
arch/arm64/kernel/head.S | 33 ++---
arch/arm64/kernel/hyp-stub.S | 28
2 files changed, 54 insertions(+), 7 deletions
The implementor will be used to condition the FIQ support quirk.
The specific CPU types are not used at the moment, but let's add them
for documentation purposes.
Signed-off-by: Hector Martin
---
arch/arm64/include/asm/cputype.h | 6 ++
1 file changed, 6 insertions(+)
diff --git a
This is different from the legacy AAPL prefix used on PPC, but
consensus is that we prefer `apple` for these new platforms.
Signed-off-by: Hector Martin
Reviewed-by: Krzysztof Kozlowski
Reviewed-by: Linus Walleij
---
Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
1 file
These are the CPU cores in the "Apple Silicon" M1 SoC.
Signed-off-by: Hector Martin
---
Documentation/devicetree/bindings/arm/cpus.yaml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml
b/Documentation/devicetree/bindings/arm/cpus.
.
Signed-off-by: Hector Martin
---
.../driver-api/driver-model/devres.rst| 1 +
arch/sparc/include/asm/io_64.h| 4
include/asm-generic/io.h | 22 ++-
include/asm-generic/iomap.h | 9
include/linux/io.h
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