On stm32 spi devices, there are 2 main IP variants, with and w/o
fifo. Fifo is not really used today, but still there is some
additional code handling fifo. Today this code is protected under
Kconfig symbol SPI_STM32_HAS_FIFO.
This code carries redundant information vs dedicated compatible
"st,stm32-spi-fifo", which is provided as unique driver compatible
for devices supporting this IP as opposed to use of "st,stm32-spi"
when fifo is not supported.
Having these 2 compatibles defined exclusively is not convenient for
migration to DT_INST as DT_INST macros contain compatible string and
hence it cannot be used to provide common compatible code for devices
defining different compatibles.
Based on these observations, review stm32 spi devices compatible
declarations. Devices supporting fifo will now declare both
compatibles, as proposed by dt spec: "[compatible] property value
consists of a concatenated list of null terminated strings,
from most specific to most general". Hence field will now be:
"st,stm32-spi-fifo", "st,stm32-spi"
This way, fifo enabled stm32 spi devices will generate both:
DT_INST_STM32_SPI_FOO and DT_INST_STM32_SPI_FIFO_FOO
As well as:
DT_COMPAT_ST_STM32_SPI and DT_COMPAT_ST_STM32_SPI_FIFO
So, DT_INST_STM32_SPI_FOO could be used for device initialization.
Also DT_COMPAT_ST_STM32_SPI_FIFO could be used for FIFO handling
code inside driver. Hence use it to replace Kconfig symbol
SPI_STM32_HAS_FIFO.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This checks if the DMA controller supports or not
the memory-to-memory transfers. For DMA Version1,
in the stm32f2xx, stm32f4xx, stm32f7xx series,
only DMA instance 2 is able to transfer mem-to-mem.
For other series, with DMA Version2, there is no such a limitation.
Signed-off-by: Francois Ramu <francois.ramu@st.com>
dts pinctrl definitions were pushed in tree without the code
available to deal with it. They have been kept waiting for the
code, but this is taking much more time than initially thought.
So in current zephyr tree, for all STM32 boards, we have pinmux.c
file which is used to configure pins and these files that are
basically no-op. This situation is creating a lot of confusion
especially to new comers, and create useless maintenance effort.
Remove these files for now.
When zephyr will ready to use them, this commit could be reverted.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Update the ADC bindings to include #io-channel-cells and update the
related dts files to set #io-channel-cells.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
The true mmio-sram nodes should not have had a 'device_type' property.
Remove it from the cases that we clearly know are SRAM.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This patch populates "clocks" property in stm32 usb nodes
for clock related usb configuration code of each dtsi files
Signed-off-by: Francois Ramu <francois.ramu@st.com>
All series of stm32 have at least one ADC instance and this commit adds
one ADC node to the root dts file of each soc, and also adds fixing up
mappings to them.
Signed-off-by: Song Qiang <songqiang1304521@gmail.com>
On currently supported stm32f3 chips,
erase-block-size = 2048
write-block-size = 2
Set these property in stm32f3 series root dtsi file.
Fixes#9686
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
We currently get a number of warnings like:
Warning (simple_bus_reg): /soc/otgfs_phy: missing or empty
reg/ranges property
This is due to the usb phy nodes not have a reg property since they
don't have an mmio address associated with them.
Move the phy nodes out of the SoC node so their lack of a reg property
will not cause a warning. This is similar to how Linux dts files
handle the phy nodes.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Add #pwm-cells to the STM32 PWM binding and dts files. This is to
support have a pwms clients work properly.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
To move forward and remove use of Kconfig in dts files lets just create
SoC specific dtsi files that the boards can include. We also seperate
out the F3 dtsi files into their own dir.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
