gned long variables, which are the same
> size as pointers on all platforms.
>
> Reported-by: kernel test robot
> Signed-off-by: Martin Kaiser
Reviewed-by: Fabien Dessenne
> ---
> changes in v2
> - added this patch to fix COMPILE_TEST warnings
>
> drivers/mailbox/stm
Hi Martin
Thank you for the patch
On 24/10/2020 3:31 pm, Martin Kaiser wrote:
> platform_get_irq_byname already prints an error message if the requested irq
> was not found. Don't print another message in the driver.
>
> Signed-off-by: Martin Kaiser
Reviewed-by: Fab
Hi,
Looks good to me.
Reviewed-by: Fabien Dessenne
BR
Fabien
On 21/05/2020 12:00 pm, Dinghao Liu wrote:
> pm_runtime_get_sync() increments the runtime PM usage counter even
> when it returns an error code. Thus a pairing decrement is needed on
> the error handling path to keep th
The wakeup specific IRQ management is no more needed to wake up the stm32
plaform. A relationship has been established between the EXTI and
the RX IRQ, just need to declare the EXTI interrupt instead of the
IPCC RX IRQ.
Signed-off-by: Alexandre Torgue
Signed-off-by: Fabien Dessenne
---
drivers
Remove the dedicated wakeup IRQ as wakeup can be handled by the RX IRQ.
Fabien Dessenne (2):
dt-bindings: mailbox: stm32-ipcc: Updates for wakeup management
mailbox: stm32-ipcc: Update wakeup management
.../devicetree/bindings/mailbox/stm32-ipcc.txt | 4 +--
drivers/mailbox/stm32
The wakeup specific IRQ management is no more needed to wake up the stm32
plaform.
Signed-off-by: Alexandre Torgue
Signed-off-by: Fabien Dessenne
---
Documentation/devicetree/bindings/mailbox/stm32-ipcc.txt | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation
Hi
I Got Rob's Reviewed-by for the bindings. Any further comments for the driver
part?
Fabien
> -Original Message-
> From: Fabien DESSENNE
> Sent: lundi 26 août 2019 17:39
> To: Rob Herring ; Mark Rutland ;
> Maxime Coquelin ; Alexandre TORGUE
> ; Ohad Ben-Cohen ;
If the rproc driver is probed before the mailbox driver and if the rproc
Device Tree node has some mailbox properties, the rproc driver probe
shall be deferred instead of being probed without mailbox support.
Signed-off-by: Fabien Dessenne
---
Changes since v1: test IS_ERR() before checking
If the rproc driver is probed before the mailbox driver and if the rproc
Device Tree node has some mailbox properties, the rproc driver probe
shall be deferred instead of being probed without mailbox support.
Signed-off-by: Fabien Dessenne
---
drivers/remoteproc/stm32_rproc.c | 12
Now that the hwspin_lock_timeout_in_atomic() API is available use it.
Signed-off-by: Fabien Dessenne
---
drivers/irqchip/irq-stm32-exti.c | 65 +---
1 file changed, 20 insertions(+), 45 deletions(-)
diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers
The watchdog IRQ which notifies the remote processor crash is used by the
remoteproc framework to perform a recovery procedure.
Since this IRQ may be fired when the Linux system is suspended, this IRQ may
be configured to wake up the system.
Fabien Dessenne (2):
dt-bindings: remoteproc: stm32
Add the "wakeup-source" property: if the optional wdg interrupt is
defined, then this property may be defined too.
Signed-off-by: Fabien Dessenne
---
Documentation/devicetree/bindings/remoteproc/stm32-rproc.txt | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/
If the device node defines the 'wakeup-source' property, use the WDG
exti IRQ as a wakeup source of the system.
Signed-off-by: Fabien Dessenne
---
drivers/remoteproc/stm32_rproc.c | 47
1 file changed, 47 insertions(+)
diff --git a/drivers/remoteproc
Manage the -EPROBE_DEFER error case for "wdg" IRQ.
Signed-off-by: Fabien Dessenne
---
drivers/remoteproc/stm32_rproc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index 1c95913..2cf4b29 100644
---
.
Signed-off-by: Fabien Dessenne
---
drivers/remoteproc/stm32_rproc.c | 11 +++
1 file changed, 11 insertions(+)
diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index e2da719..1c95913 100644
--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc
Hi Suman,
See my remarks below
BR
Fabien
On 09/08/2019 11:40 PM, Suman Anna wrote:
> From: Ohad Ben-Cohen
>
> Add a new description field to the rpmsg bus infrastructure
> that can be passed onto the rpmsg client drivers for additional
> information. The current rpmsg bus client drivers need
Hi Hans
"platform_get_irq() = 0" shall be considered as an error. See these
discussions:
https://patchwork.kernel.org/patch/10006651/
https://yarchive.net/comp/linux/zero.html
BR
Fabien
On 03/06/2019 1:45 PM, Hans Verkuil wrote:
> On 5/31/19 11:18 AM, Fabien Dessenne wrote:
>
Manage the irq = 0 case, where we shall return an error.
Fixes: b5b5a27bee58 ("media: stm32-dcmi: return appropriate error codes during
probe")
Signed-off-by: Fabien Dessenne
---
drivers/media/platform/stm32/stm32-dcmi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Hi Pavel
On 31/05/2019 10:19 AM, Pavel Machek wrote:
> Hi!
>
>> [ Upstream commit b5b5a27bee5884860798ffd0f08e611a3942064b ]
>>
>> During probe, return the provided errors value instead of -ENODEV.
>> This allows the driver to be deferred probed if needed.
> This is not correct AFAICT.
The
s results in register
> corruptions.
>
> Signed-off-by: Arnaud Pouliquen
Reviewed-by: Fabien Dessenne
> ---
> drivers/mailbox/stm32-ipcc.c | 37 +++--
> 1 file changed, 27 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/mailbox/stm
Declare the M4 remote processor in a sub-node of the mlahb simple bus.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157c.dtsi | 20
1 file changed, 20 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi
b/arch/arm/boot/dts/stm32mp157c.dtsi
index
Document the ML-AHB interconnect for stm32 SoCs.
Signed-off-by: Fabien Dessenne
---
.../devicetree/bindings/arm/stm32/mlahb.txt| 37 ++
1 file changed, 37 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/stm32/mlahb.txt
diff --git
Enable m4 coprocessor for STM32MP157c-ed1 board.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157c-ed1.dts | 10 ++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157c-ed1.dts
b/arch/arm/boot/dts/stm32mp157c-ed1.dts
index acfc5cd..e5a6f40 100644
es'.
- Updated the 'compatible' property.
- Remove the 'recovery', 'reset-names' and 'interrupt-names' properties.
- Clarified why / when mailboxes are optional.
Fabien Dessenne (8):
dt-bindings: stm32: add bindings for ML-AHB interconnect
dt-bindings: remoteproc: add bindings for stm32 remote p
Declare reserved memories shared by the processors for STM32MP157a-dk1
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157a-dk1.dts | 42 +++
1 file changed, 42 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts
b/arch/arm/boot/dts
Declare reserved memories shared by the processors for STM32MP157c-ed1
board.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157c-ed1.dts | 42 +++
1 file changed, 42 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157c-ed1.dts
b/arch/arm/boot
Enable m4 coprocessor for STM32MP157a-dk1 board.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157a-dk1.dts | 10 ++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts
b/arch/arm/boot/dts/stm32mp157a-dk1.dts
index 26ce8de..da64ee2 100644
This patch introduces a new remoteproc driver to control Cortex-M4
co-processor of the STM32 family.
It provides with the following features:
- start and stop
- dedicated co-processor memory regions registration
- coredump and recovery
Signed-off-by: Fabien Dessenne
Signed-off-by: Ludovic Barre
Add the device tree bindings document for the stm32 remoteproc devices.
Signed-off-by: Fabien Dessenne
---
.../devicetree/bindings/remoteproc/stm32-rproc.txt | 63 ++
1 file changed, 63 insertions(+)
create mode 100644 Documentation/devicetree/bindings/remoteproc/stm32
Hi
I Got Rob's Reviewed-by. Any further comments?
Fabien
On 25/04/2019 11:17 AM, Fabien Dessenne wrote:
> The current implementation does not allow two different devices to use
> a common hwspinlock. This patch set proposes to have, as an option, some
> hwspinlocks shared betwee
Hi
Gentle reminder
Fabien
On 08/03/2019 5:53 PM, Fabien Dessenne wrote:
> Do not wait for hwspinlock device registration if it is not available
> for use.
>
> Signed-off-by: Fabien Dessenne
> ---
> V2: use 'goto out' instead of 'return'
>
> drivers/hwspinlo
Hi
Any further comments?
Fabien
On 08/03/2019 1:42 PM, Benjamin Gaignard wrote:
> Le jeu. 7 mars 2019 à 16:42, Fabien Dessenne a écrit
> :
>> Implement this optional ops, called by hwspinlock core while spinning on
>> a lock, between two successive invocations of trylock()
On 03/05/2019 2:19 PM, Jiri Kosina wrote:
> On Fri, 12 Apr 2019, Fabien Dessenne wrote:
>
>> The second parameter of devm_add_action_or_reset() shall be a function,
>> not a function address.
>>
>> Signed-off-by: Fabien Dessenne
>> ---
>> drivers/h
Document the ML-AHB interconnect for stm32 SoCs.
Signed-off-by: Fabien Dessenne
---
.../devicetree/bindings/arm/stm32/mlahb.txt| 37 ++
1 file changed, 37 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/stm32/mlahb.txt
diff --git
Declare reserved memories shared by the processors for STM32MP157a-dk1
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157a-dk1.dts | 42 +++
1 file changed, 42 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts
b/arch/arm/boot/dts
Add the device tree bindings document for the stm32 remoteproc devices.
Signed-off-by: Fabien Dessenne
---
.../devicetree/bindings/remoteproc/stm32-rproc.txt | 63 ++
1 file changed, 63 insertions(+)
create mode 100644 Documentation/devicetree/bindings/remoteproc/stm32
Enable m4 coprocessor for STM32MP157c-ed1 board.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157c-ed1.dts | 10 ++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157c-ed1.dts
b/arch/arm/boot/dts/stm32mp157c-ed1.dts
index acfc5cd..e5a6f40 100644
Declare reserved memories shared by the processors for STM32MP157c-ed1
board.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157c-ed1.dts | 42 +++
1 file changed, 42 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157c-ed1.dts
b/arch/arm/boot
Enable m4 coprocessor for STM32MP157a-dk1 board.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157a-dk1.dts | 10 ++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts
b/arch/arm/boot/dts/stm32mp157a-dk1.dts
index 26ce8de..da64ee2 100644
This patch introduces a new remoteproc driver to control Cortex-M4
co-processor of the STM32 family.
It provides with the following features:
- start and stop
- dedicated co-processor memory regions registration
- coredump and recovery
Signed-off-by: Fabien Dessenne
Signed-off-by: Ludovic Barre
Declare the M4 remote processor in a sub-node of the mlahb simple bus.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157c.dtsi | 20
1 file changed, 20 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi
b/arch/arm/boot/dts/stm32mp157c.dtsi
index
"auto_boot" in "st,auto-boot"
Changes since v1:
- Gave details about the memory mapping (in bindings).
- Used 'dma-ranges' instead of 'ranges'.
- Updated the 'compatible' property.
- Remove the 'recovery', 'reset-names' and 'interrupt-names' properties.
- Clarified why / when m
Hi Rob,
On 30/04/2019 2:40 AM, Rob Herring wrote:
> On Tue, Apr 16, 2019 at 04:58:13PM +0200, Fabien Dessenne wrote:
>> Add the device tree bindings document for the stm32 remoteproc devices.
>>
>> Signed-off-by: Fabien Dessenne
>> ---
>> .../devicetree/bi
Use #hwlock-cells value to define whether the locks can be shared
by several users.
Signed-off-by: Fabien Dessenne
Reviewed-by: Rob Herring
---
.../devicetree/bindings/hwlock/hwlock.txt | 27 --
1 file changed, 20 insertions(+), 7 deletions(-)
diff --git
-off-by: Fabien Dessenne
---
drivers/mailbox/stm32-ipcc.c | 13 -
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/mailbox/stm32-ipcc.c b/drivers/mailbox/stm32-ipcc.c
index 210fe50..f91dfb1 100644
--- a/drivers/mailbox/stm32-ipcc.c
+++ b/drivers/mailbox/stm32-ipcc.c
During probe, return the "get_irq" error value instead of -ENOENT. This
allows the driver to be deferred probed if needed.
Signed-off-by: Fabien Dessenne
---
sound/soc/stm/stm32_i2s.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/sound/soc/stm/stm32_i2s.c b
During probe, check the "get_irq" error value.
Signed-off-by: Fabien Dessenne
---
drivers/spi/spi-stm32-qspi.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c
index 11a89aa..42f8e3c 100644
--- a/drivers/spi/spi-st
During probe, check the "get_irq" error value.
Signed-off-by: Fabien Dessenne
---
drivers/mtd/nand/raw/stm32_fmc2_nand.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index 999ca6a..4aab
During probe, check the devm_ioremap_resource() error value.
Also return the devm_clk_get() error value instead of -EINVAL.
Signed-off-by: Fabien Dessenne
---
drivers/iio/adc/stm32-dfsdm-core.c | 8 ++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/iio/adc/stm32
This patchset adds some check of the returned error code in probe.
Fabien Dessenne (2):
iio: adc: stm32-dfsdm: manage the get_irq error case
iio: adc: stm32-dfsdm: missing error case during probe
drivers/iio/adc/stm32-dfsdm-adc.c | 6 ++
drivers/iio/adc/stm32-dfsdm-core.c | 8
During probe, check the "get_irq" error value.
Signed-off-by: Fabien Dessenne
---
drivers/iio/adc/stm32-dfsdm-adc.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c
b/drivers/iio/adc/stm32-dfsdm-adc.c
index 19adc2b..588907c 100644
--- a/d
During probe, return the "get_irq" error value instead of -ENOENT. This
allows the driver to be defer probed if needed.
Signed-off-by: Fabien Dessenne
---
drivers/spi/spi-stm32.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/spi-stm32.c b/drive
Manage the -EPROBE_DEFER error case for the wake IRQ.
Signed-off-by: Fabien Dessenne
---
drivers/rtc/rtc-stm32.c | 9 ++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/rtc/rtc-stm32.c b/drivers/rtc/rtc-stm32.c
index c5908cf..8e6c9b3 100644
--- a/drivers/rtc/rtc
platform_get_resource(pdev, IORESOURCE_IRQ) is not recommended for
requesting IRQ's resources, as they can be not ready yet. Using
platform_get_irq() instead is preferred for getting IRQ even if it was
not retrieved earlier.
Signed-off-by: Fabien Dessenne
---
drivers/dma/stm32-dma.c | 11
It is not guaranteed that the IRQ controller driver is probed before
the pin controller driver gets probed.
Considering this, check for the irq domain availability during probe
and return EPROBE_DEFER if needed.
Signed-off-by: Fabien Dessenne
---
drivers/pinctrl/stm32/pinctrl-stm32.c | 37
.
This applies only for the device which is "st,stm32mp1-exti" compatible,
the management of the other devices (st,stm32h7-exti / st,stm32-exti) is
kept unchanged (use IRQCHIP_DECLARE)
Signed-off-by: Fabien Dessenne
---
drivers/irqchip/irq-stm32-ex
Declare the M4 remote processor in a sub-node of the mlahb simple bus.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157c.dtsi | 20
1 file changed, 20 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi
b/arch/arm/boot/dts/stm32mp157c.dtsi
index
Add the device tree bindings document for the stm32 remoteproc devices.
Signed-off-by: Fabien Dessenne
---
.../devicetree/bindings/remoteproc/stm32-rproc.txt | 64 ++
1 file changed, 64 insertions(+)
create mode 100644 Documentation/devicetree/bindings/remoteproc/stm32
of 'ranges'.
- Updated the 'compatible' property.
- Remove the 'recovery', 'reset-names' and 'interrupt-names' properties.
- Clarified why / when mailboxes are optional.
Fabien Dessenne (8):
dt-bindings: stm32: add bindings for ML-AHB interconnect
dt-bindings: remoteproc: add bindings for stm32
This patch introduces a new remoteproc driver to control Cortex-M4
co-processor of the STM32 family.
It provides with the following features:
- start and stop
- dedicated co-processor memory regions registration
- coredump and recovery
Signed-off-by: Fabien Dessenne
Signed-off-by: Ludovic Barre
Document the ML-AHB interconnect for stm32 SoCs.
Signed-off-by: Fabien Dessenne
---
.../devicetree/bindings/arm/stm32/mlahb.txt| 37 ++
1 file changed, 37 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/stm32/mlahb.txt
diff --git
Enable m4 coprocessor for STM32MP157a-dk1 board.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157a-dk1.dts | 10 ++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts
b/arch/arm/boot/dts/stm32mp157a-dk1.dts
index 26ce8de..da64ee2 100644
Declare reserved memories shared by the processors for STM32MP157c-ed1
board.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157c-ed1.dts | 42 +++
1 file changed, 42 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157c-ed1.dts
b/arch/arm/boot
Declare reserved memories shared by the processors for STM32MP157a-dk1
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157a-dk1.dts | 42 +++
1 file changed, 42 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts
b/arch/arm/boot/dts
Enable m4 coprocessor for STM32MP157c-ed1 board.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157c-ed1.dts | 10 ++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157c-ed1.dts
b/arch/arm/boot/dts/stm32mp157c-ed1.dts
index acfc5cd..e5a6f40 100644
The second parameter of devm_add_action_or_reset() shall be a function,
not a function address.
Signed-off-by: Fabien Dessenne
---
drivers/hid/hid-rmi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
index 9e33165..8748d4d
Hi Johan,
On 03/04/2019 10:44 AM, Johan Hovold wrote:
> On Thu, Mar 21, 2019 at 04:47:19PM +0100, Fabien Dessenne wrote:
>> This driver exposes a standard tty interface on top of the rpmsg
>> framework through the "rpmsg-tty-channel" rpmsg service.
>>
>>
, please let me know if you
think about something better.
See also below my answer to your specific remarks
BR
On 28/03/2019 12:07 AM, Rob Herring wrote:
> On Tue, Mar 05, 2019 at 03:24:02PM +0100, Fabien Dessenne wrote:
>> Document the ML-AHB interconnect for stm32 SoCs.
>>
Mar 21, 2019 at 04:43:26PM +0100, Fabien Dessenne wrote:
>> Unlike 'client_ops' which is initialized to 'default_client_ops', the
>> port operations 'ops' may be left to NULL.
>> Check the 'ops' value before checking the 'ops->x' value.
>>
>> Signed-off-by: Fabi
Return the rpmsg buffer payload size for sending message, so rpmsg users
can split a long message in several sub rpmsg buffers.
Signed-off-by: Arnaud Pouliquen
Signed-off-by: Fabien Dessenne
---
drivers/rpmsg/rpmsg_core.c | 20
drivers/rpmsg/rpmsg_internal.h | 2
driver itself.
Fabien Dessenne (2):
rpmsg: core: add possibility to get message payload length
tty: add rpmsg driver
drivers/rpmsg/rpmsg_core.c | 20 +++
drivers/rpmsg/rpmsg_internal.h | 2 +
drivers/rpmsg/virtio_rpmsg_bus.c | 11 ++
drivers/tty/Kconfig | 9 ++
drivers
This driver exposes a standard tty interface on top of the rpmsg
framework through the "rpmsg-tty-channel" rpmsg service.
This driver supports multi-instances, offering a /dev/ttyRPMSGx entry
per rpmsg endpoint.
Signed-off-by: Arnaud Pouliquen
Signed-off-by: Fabien Dessenne
---
d
Unlike 'client_ops' which is initialized to 'default_client_ops', the
port operations 'ops' may be left to NULL.
Check the 'ops' value before checking the 'ops->x' value.
Signed-off-by: Fabien Dessenne
---
drivers/tty/tty_port.c | 10 +-
1 file changed, 5 insertions(+), 5 deleti
ramework supports only one value : 1 (see implementation of
of_hwspin_lock_simple_xlate())
Hence, it shall not be a problem to restrict this value to 1 or 2 since
it won't break any driver.
Fabien Dessenne (6):
dt-bindings: hwlock: add support of shared locks
hwspinlock: allow sharing of hwspinlocks
dt-bindings: hw
an hwlock is requested for an exclusive or a shared usage.
If a device registers with #hwlock-cells = 1, then all the hwlocks are
for an exclusive usage.
Signed-off-by: Fabien Dessenne
---
Documentation/hwspinlock.txt | 10 ++--
drivers/hwspinlock/hwspinlock_core.c | 82
Do not wait for hwspinlock device registration if it is not available
for use.
Signed-off-by: Fabien Dessenne
---
V2: use 'goto out' instead of 'return'
drivers/hwspinlock/hwspinlock_core.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/drivers/hwspinlock/hwspinlock_core.c
b/drivers
Hi Marc,
Thanks for your detailed answer.
I will study how to move this driver to a device one.
BR
Fabien
On 08/03/2019 4:30 PM, Marc Zyngier wrote:
> On Fri, 08 Mar 2019 14:03:55 +,
> Fabien DESSENNE wrote:
>
> Fabien,
>
>> Hi Marc,
>>
>> Thank
ons justify its implementation.
Waiting for your feedback
BR
Fabien
On 07/03/2019 5:44 PM, Marc Zyngier wrote:
> On 07/03/2019 16:23, Fabien Dessenne wrote:
>> Requesting hwspinlock, at the first time it is used, is not correct:
>> indeed, at that moment we are under raw_spin_lock
Here's a couple of fixes for the stm32 irqchip. The configuration set by the
remote processor is overwritten by the irqchip driver when it is intialized,
which is wrong.
v3: add the "Fixes" tag
v2: add the missing "don't clear rising/falling" patch
Fabien Dessenne (2):
i
The rising configuration status register (rtsr) is not banked.
As it is shared with the co-processor, it should not be written at probe
time, else the co-processor configuration will be lost.
Fixes: f9fc1745501e ("irqchip/stm32: Add host and driver data structures")
Signed-off-by: Fabie
f-by: Loic Pallardy
Signed-off-by: Fabien Dessenne
---
drivers/irqchip/irq-stm32-exti.c | 5 -
1 file changed, 5 deletions(-)
diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c
index 6edfd4b..dab37fb 100644
--- a/drivers/irqchip/irq-stm32-exti.c
+++ b/drivers/i
> -Original Message-
> From: Marc Zyngier
> Sent: jeudi 7 mars 2019 18:46
> To: Fabien DESSENNE ; Thomas Gleixner
> ; Jason Cooper ; Maxime Coquelin
> ; Alexandre TORGUE
> ; linux-kernel@vger.kernel.org; linux-stm32@st-md-
> mailman.stormreply.com; linux-arm-ke
falling and rising configuration and status registers are not banked.
As they are shared with M4 co-processor, they should not be cleared
at probe time, else M4 co-processor configuration will be lost.
Signed-off-by: Loic Pallardy
Signed-off-by: Fabien Dessenne
---
drivers/irqchip/irq-stm32
Here's a couple of fixes for the stm32 irqchip. The configuration set by the
remote processor is overwritten by the irqchip driver when it is intialized,
which is wrong.
v2: add the missing "don't clear rising/falling" patch
Fabien Dessenne (2):
irqchip: stm32: don't clear risi
The rising configuration status register (rtsr) is not banked.
As it is shared with the co-processor, it should not be written at probe
time, else the co-processor configuration will be lost.
Signed-off-by: Fabien Dessenne
---
drivers/irqchip/irq-stm32-exti.c | 5 -
1 file changed, 5
Hi
> -Original Message-
> From: Marc Zyngier
> Sent: jeudi 7 mars 2019 17:40
> To: Fabien DESSENNE ; Thomas Gleixner
> ; Jason Cooper ; Maxime Coquelin
> ; Alexandre TORGUE
> ; linux-kernel@vger.kernel.org; linux-stm32@st-md-
> mailman.storm
ti_of_init()) is also
not possible (the hwspinlock framework is not ready at that stage of the
kernel init).
As a consequence, add a second level init (probed with arch_initcall)
where we can safely request hwspinlock.
Signed-off-by: Fabien Dessenne
---
drivers/irqchip/irq-stm32-ex
The rising configuration status register (rtsr) is not banked.
As it is shared with the co-processor, it should not be written at probe
time, else the co-processor configuration will be lost.
Signed-off-by: Fabien Dessenne
---
drivers/irqchip/irq-stm32-exti.c | 5 -
1 file changed, 5
() calls.
Signed-off-by: Fabien Dessenne
---
Documentation/hwspinlock.txt | 39 +++
drivers/hwspinlock/hwspinlock_core.c | 43 +
include/linux/hwspinlock.h | 61 ++--
3 files changed, 127 insertions(+), 16
.
Fabien Dessenne (2):
hwspinlock: document the hwspinlock 'raw' API
hwspinlock: add the 'in_atomic' API
Documentation/hwspinlock.txt | 81
drivers/hwspinlock/hwspinlock_core.c | 43 +--
include/linux/hwspinlock.h | 61
Document the hwspin_lock_timeout_raw(), hwspin_trylock_raw() and
hwspin_unlock_raw() API.
Signed-off-by: Fabien Dessenne
---
Documentation/hwspinlock.txt | 42 ++
1 file changed, 42 insertions(+)
diff --git a/Documentation/hwspinlock.txt b/Documentation
Do not wait for hwspinlock device registration if it is not available
for use.
Signed-off-by: Fabien Dessenne
---
drivers/hwspinlock/hwspinlock_core.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/hwspinlock/hwspinlock_core.c
b/drivers/hwspinlock/hwspinlock_core.c
index
Implement this optional ops, called by hwspinlock core while spinning on
a lock, between two successive invocations of trylock().
Signed-off-by: Fabien Dessenne
---
drivers/hwspinlock/stm32_hwspinlock.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/drivers/hwspinlock
STMicrolectronics STM32MP157 MPU are based on a Dual Arm Cortex-A7 core and a
Cortex-M4.
This patchset adds the support of the stm32_rproc driver allowing to control
the M4 remote processor.
Fabien Dessenne (8):
dt-bindings: stm32: add bindings for ML-AHB interconnect
dt-bindings: remoteproc
Document the ML-AHB interconnect for stm32 SoCs.
Signed-off-by: Fabien Dessenne
---
.../devicetree/bindings/arm/stm32/mlahb.txt| 30 ++
1 file changed, 30 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/stm32/mlahb.txt
diff --git
Enable m4 coprocessor for STM32MP157c-ed1 board.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157c-ed1.dts | 12
1 file changed, 12 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157c-ed1.dts
b/arch/arm/boot/dts/stm32mp157c-ed1.dts
index acfc5cd..c0b4cca
Declare the M4 remote processor in a sub-node of the ahb simple bus.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157c.dtsi | 21 +
1 file changed, 21 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi
b/arch/arm/boot/dts/stm32mp157c.dtsi
index
Declare reserved memories shared by the processors for STM32MP157c-ed1
board.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157c-ed1.dts | 42 +++
1 file changed, 42 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157c-ed1.dts
b/arch/arm/boot
Enable m4 coprocessor for STM32MP157a-dk1 board.
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157a-dk1.dts | 12
1 file changed, 12 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts
b/arch/arm/boot/dts/stm32mp157a-dk1.dts
index 26ce8de..818a979
Declare reserved memories shared by the processors for STM32MP157a-dk1
Signed-off-by: Fabien Dessenne
---
arch/arm/boot/dts/stm32mp157a-dk1.dts | 42 +++
1 file changed, 42 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts
b/arch/arm/boot/dts
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