Now that there is an alternate way for Linux to receive NMIs from the
PMIC, replace references to r_intc with references to the new interrupt
controller.
Signed-off-by: Samuel Holland
---
arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts | 4 ++--
This is a somewhat generic binding for an interrupt controller/forwarder
implemented in firmware and communicated with using a mailbox.
Signed-off-by: Samuel Holland
---
.../interrupt-controller/mbox-intc.txt| 33 +++
1 file changed, 33 insertions(+)
create mode 100644
Now that r_intc is no longer used directly by Linux, it can be removed
from the SoC device tree.
Signed-off-by: Samuel Holland
---
arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 9 -
1 file changed, 9 deletions(-)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
Hardware attached to AHB0/APB0 and controlled in the PRCM is designed to
be used by firmware running on the ARISC core. However, some devices in
this block (specifically the I2C, RSB, PIO, and CIR-RX) have native
Linux drivers and are already in the device tree. In particular, the RSB
and I2C
This series adds support for the "hardware message box" in sun8i, sun9i,
and sun50i SoCs, used for communication with the ARISC management
processor (the platform's equivalent of the ARM SCP). The end goal is to
use the arm_scpi driver as a client, communicating with firmware running
on the AR100
The A64 SoC contains a message box that can be used to send messages and
interrupts back and forth between the ARM application CPUs and the ARISC
coprocessor. Add a device tree node for it.
Signed-off-by: Samuel Holland
---
arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 10 ++
1 file
The msgbox clock is critical because the hardware it controls is shared
between Linux and system firmware. The message box may be used by the
EL3 secure monitor's PSCI implementation. On 64-bit sunxi SoCs, this is
provided by ARM TF-A; 32-bit SoCs use a different implementation. The
secure monitor
On sun8i, sun9i, and sun50i SoCs, system suspend/resume support requires
firmware running on the AR100 coprocessor (the "SCP"). Such firmware can
provide additional features, such as thermal monitoring and poweron/off
support for boards without a PMIC.
Since the AR100 may be running critical
In order to give firmware full access to r_intc, Linux needs to avoid
using it in the device tree. Most IRQ lines attached to r_intc are also
attached to the GIC. Unfortunately, the NMI is not. For it to be used in
Linux, we have to forward it in firmware over the mailbox.
Add a node representing
The H6 SoC contains a message box that can be used to send messages and
interrupts back and forth between the ARM application CPUs and the ARISC
coprocessor. Add a device tree node for it.
Signed-off-by: Samuel Holland
---
arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 10 ++
1 file
Allwinner sun8i, sun9i, and sun50i SoCs contain a hardware message box
used for communication between the ARM CPUs and the ARISC management
coprocessor. The hardware contains 8 unidirectional 4-message FIFOs.
Add a driver for it, so it can be used for SCPI or other communication
protocols.
This driver implements a simple interrupt controller using message
passing over a mailbox channel. The intention is for the other end of
the channel to be implemented in firmware. This allows filtering and
forwarding interrupts from one processor to another.
Signed-off-by: Samuel Holland
---
This mailbox hardware is present in Allwinner sun8i, sun9i, and sun50i
SoCs. Add a device tree binding for it.
Signed-off-by: Samuel Holland
---
.../mailbox/allwinner,sunxi-msgbox.yaml | 79 +++
1 file changed, 79 insertions(+)
create mode 100644
The A83T SoC contains a message box that can be used to send messages
and interrupts back and forth between the ARM application CPUs and the
ARISC coprocessor. Add a device tree node for it.
Signed-off-by: Samuel Holland
---
arch/arm/boot/dts/sun8i-a83t.dtsi | 10 ++
1 file changed, 10
On Thu, Feb 28, 2019 at 08:20:44PM -0600, Samuel Holland wrote:
> When enabling ARCH_SUNXI from allnoconfig, SUNXI_SRAM is enabled, but
> not REGMAP_MMIO, so the kernel fails to link with an undefined reference
> to __devm_regmap_init_mmio_clk. Select REGMAP_MMIO, as suggested in
>
Hi
On Thu, Feb 28, 2019 at 11:29:37PM -0600, Samuel Holland wrote:
> This series adds support for the "hardware message box" in sun8i, sun9i,
> and sun50i SoCs, used for communication with the ARISC management
> processor (the platform's equivalent of the ARM SCP). The end goal is to
> use the
On Thu, Feb 28, 2019 at 09:03:26PM +0100, Jernej Skrabec wrote:
> DE2 and DE3 VI channels support coarse scaling to overcome VI scaler
> limitations. That is especially useful for downscaling big planes, for
> example 4K to 1080p.
>
> Following patches were tested on H3 and A64 with 4K video
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