drivers: spi: litex: add spiflash driver and rework existing driver

MAINTAINERS.yml

@@ -3889,7 +3889,6 @@ LiteX Platforms:
   files:
     - boards/enjoydigital/litex_vexriscv/
     - drivers/*/*litex*
-    - drivers/spi/spi_litespi*
     - drivers/*/Kconfig.litex
     - dts/bindings/*/litex*
     - dts/riscv/riscv32-litex-vexriscv.dtsi

drivers/spi/CMakeLists.txt

@@ -24,7 +24,8 @@ zephyr_library_sources_ifdef(CONFIG_SPI_NRFX_SPI	spi_nrfx_spi.c
 zephyr_library_sources_ifdef(CONFIG_SPI_NRFX_SPIM	spi_nrfx_spim.c
 							spi_nrfx_common.c)
 zephyr_library_sources_ifdef(CONFIG_SPI_NRFX_SPIS	spi_nrfx_spis.c)
-zephyr_library_sources_ifdef(CONFIG_SPI_LITESPI		spi_litespi.c)
+zephyr_library_sources_ifdef(CONFIG_SPI_LITEX		spi_litex.c)
+zephyr_library_sources_ifdef(CONFIG_SPI_LITEX_LITESPI	spi_litex_litespi.c)
 zephyr_library_sources_ifdef(CONFIG_SPI_OC_SIMPLE	spi_oc_simple.c)
 zephyr_library_sources_ifdef(CONFIG_SPI_XEC_QMSPI	spi_xec_qmspi.c)
 zephyr_library_sources_ifdef(CONFIG_SPI_GECKO		spi_gecko.c)

drivers/spi/Kconfig.litex

@@ -3,9 +3,16 @@
 # Copyright (c) 2019 Antmicro <www.antmicro.com>
 # SPDX-License-Identifier: Apache-2.0
 
-config SPI_LITESPI
+config SPI_LITEX
 	bool "LiteX SPI controller driver"
 	default y
 	depends on DT_HAS_LITEX_SPI_ENABLED
 	help
 	  Enable the SPI peripherals on LiteX
+
+config SPI_LITEX_LITESPI
+	bool "LiteX SPI LiteSPI controller driver"
+	default y
+	depends on DT_HAS_LITEX_SPI_LITESPI_ENABLED
+	help
+	  Enable the SPI peripherals on LiteX