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drivers: spi: create Ambiq SPI BLEIF driver

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Some Ambiq Apollox Blue SOC (e.g. Apollo3 Blue) uses internal designed
BLEIF module which is different from the general IOM module for SPI
transceiver. The called HAL API will also be independent. This driver is
implemented for the BLEIF module usage scenarios.

Signed-off-by: Aaron Ye <aye@ambiq.com>
This commit is contained in:
Aaron Ye 2024-05-16 16:27:51 +08:00 • committed by Carles Cufí
commit d84874309e
6 changed files with 266 additions and 1 deletions
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26
drivers/spi/Kconfig.ambiq
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@ -1,6 +1,7 @@
# Ambiq SDK SPI
#
# Copyright (c) 2023 Antmicro <www.antmicro.com>
# Copyright (c) 2024 Ambiq Micro Inc. <www.ambiq.com>
#
# SPDX-License-Identifier: Apache-2.0
#
@ -22,3 +23,28 @@ config MSPI_AMBIQ
select AMBIQ_HAL_USE_MSPI
help
Enable driver for Ambiq MSPI.
config SPI_AMBIQ_BLEIF
bool "AMBIQ SPI-BLEIF driver"
default y
depends on DT_HAS_AMBIQ_SPI_BLEIF_ENABLED
select AMBIQ_HAL
select AMBIQ_HAL_USE_BLEIF
help
Enable driver for Ambiq Apollox Blue SOC (e.g. Apollo3 Blue)
which uses internal designed BLEIF module (different from the
general IOM module) for SPI transceiver. It is always used for
the Bluetooth HCI communication.
if SPI_AMBIQ_BLEIF
config SPI_AMBIQ_BLEIF_TIMING_TRACE
bool "Ambiq SPI-BLEIF timing trace"
help
The pins for the SPI transceiver are not exposed from the chips
and no need for user to confiugre them. But the chips design the
configurable BLEIF timing observation functions on other exposed
pins. The user can enable it to configure the pins for timing
trace purpose.
endif # SPI_AMBIQ_BLEIF