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spi: Add Amlogic SPISG driver

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Introduced support for the new SPI IP (SPISG) driver. The SPISG is
a communication-oriented SPI controller from Amlogic,supporting
three operation modes: PIO, block DMA, and scatter-gather DMA.

Due to there is no FIFO, PIO mode can only transfer one word at
a time, which is extremely slow. Therefore, this mode was not
implemented.

Signed-off-by: Sunny Luo <sunny.luo@amlogic.com>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://patch.msgid.link/20250718-spisg-v5-2-b8f0f1eb93a2@amlogic.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sunny Luo
2025-07-24 13:28:33 +01:00
committed by Mark Brown
parent 78d35a2078
commit cef9991e04
3 changed files with 898 additions and 0 deletions
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drivers/spi/Kconfig
+9
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@@ -99,6 +99,15 @@ config SPI_AMLOGIC_SPIFC_A1
This enables master mode support for the SPIFC (SPI flash This enables master mode support for the SPIFC (SPI flash
controller) available in Amlogic A1 (A113L SoC). controller) available in Amlogic A1 (A113L SoC).
config SPI_AMLOGIC_SPISG
tristate "Amlogic SPISG controller"
depends on COMMON_CLK
depends on ARCH_MESON || COMPILE_TEST
help
This enables master mode support for the SPISG (SPI scatter-gather
communication controller), which is available on platforms such as
Amlogic A4 SoCs.
config SPI_APPLE config SPI_APPLE
tristate "Apple SoC SPI Controller platform driver" tristate "Apple SoC SPI Controller platform driver"
depends on ARCH_APPLE || COMPILE_TEST depends on ARCH_APPLE || COMPILE_TEST
drivers/spi/Makefile
+1
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@@ -20,6 +20,7 @@ obj-$(CONFIG_SPI_ALTERA) += spi-altera-platform.o
obj-$(CONFIG_SPI_ALTERA_CORE) += spi-altera-core.o obj-$(CONFIG_SPI_ALTERA_CORE) += spi-altera-core.o
obj-$(CONFIG_SPI_ALTERA_DFL) += spi-altera-dfl.o obj-$(CONFIG_SPI_ALTERA_DFL) += spi-altera-dfl.o
obj-$(CONFIG_SPI_AMLOGIC_SPIFC_A1) += spi-amlogic-spifc-a1.o obj-$(CONFIG_SPI_AMLOGIC_SPIFC_A1) += spi-amlogic-spifc-a1.o
obj-$(CONFIG_SPI_AMLOGIC_SPISG) += spi-amlogic-spisg.o
obj-$(CONFIG_SPI_APPLE) += spi-apple.o obj-$(CONFIG_SPI_APPLE) += spi-apple.o
obj-$(CONFIG_SPI_AR934X) += spi-ar934x.o obj-$(CONFIG_SPI_AR934X) += spi-ar934x.o
obj-$(CONFIG_SPI_ARMADA_3700) += spi-armada-3700.o obj-$(CONFIG_SPI_ARMADA_3700) += spi-armada-3700.o
drivers/spi/spi-amlogic-spisg.c
+888
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