Introduce DesignWare ARC Data Fusion IP Subsystem(DFSS) SPI
driver for ARC boards, i.e. EMSDP, which uses DW SPI to controll
SPI-Flash and DFSS SPI to connect external devices. Both drivers
share most source code, but DFSS uses ARC auxiliary registers.
Move FIFO depth setting to device tree.
Signed-off-by: Siyuan Cheng <siyuanc@synopsys.com>
There is a spi-flash fl256s on emsdp board, which can be
contolled by DesignWare SPI driver. Now add DW SPI and
SPI-FLASH support for emsdp board.
Signed-off-by: Siyuan Cheng <siyuanc@synopsys.com>
ICI (Inter-Core Interrupt Unit) interrupts and priorities were hardcoded
in C files. This patch moves this information to Devicetree and updates
code to make use of it.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
sysconf base address was hardcoded in <soc.h>. Create a new compatible
and define it in Devicetree, where hardware needs to be described.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Use Devicetree to describe secure timer0 instead of hardcoding values in
<soc.h>.
DT files have been structured to match the following requirements: In
case of sectimer0 - it's should be only enabled for:
- emsdp_em7d_esp.dts
- em_starterkit_em7d.dts
- nsim_sem_mpu_stack_guard.dts
- nsim_sem.dts
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Use DT_INST_FOREACH_STATUS_OKAY to reduce duplicated code for each
instance.
We make interrupts optional since they aren't always available.
Signed-off-by: Kumar Gala <galak@kernel.org>
The ns16550 flags reg-shift property as optional. In case it is not
supplied, the ns16550 driver relies on a value defined in <soc.h>, or,
by default it takes 4 (shift by 2).
This patch adds the property to all ns16550 nodes, with the following
values:
- 2 if SoC did not have any custom value defined by
UART_REG_ADDR_INTERVAL (corresponds to 1 << 2 = 4)
- If SoC defined DEFAULT_REG_INTERVAL (snps_arc_iot/it8xxx2), use such
value (4=2, 2=1, 1=0).
These changes will allow simplifying the ns16550 driver.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Pinmux is deprecated (see #39740) so let's get rid of
it's usage for HSDK board.
As we call pinmux only once at init phase we simply do
register setup in platform code instead of pinmux.
Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Siyuan Cheng