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authorSerge Semin <Sergey.Semin@baikalelectronics.ru>2020-10-08 02:55:10 +0300
committerMark Brown <broonie@kernel.org>2020-10-09 01:00:22 +0300
commitabf00907538e21c469a10809dc2991982673fcbf (patch)
tree573f5473602b4009463f8bad424dbd3d899173ce /drivers/spi/Makefile
parent14345c33461bc2373bc4f75f40baf4650e95ee54 (diff)
downloadlinux-abf00907538e21c469a10809dc2991982673fcbf.tar.xz
spi: dw: Add Baikal-T1 SPI Controller glue driver
Baikal-T1 is equipped with three DW APB SSI-based MMIO SPI controllers. Two of them are pretty much normal: with IRQ, DMA, FIFOs of 64 words depth, 4x CSs, but the third one as being a part of the Baikal-T1 System Boot Controller has got a very limited resources: no IRQ, no DMA, only a single native chip-select and Tx/Rx FIFO with just 8 words depth available. In order to provide a transparent initial boot code execution the Boot SPI controller is also utilized by an vendor-specific IP-block, which exposes an SPI flash direct mapping interface. Since both direct mapping and SPI controller normal utilization are mutual exclusive only one of these interfaces can be used to access an external SPI slave device. That's why a dedicated mux is embedded into the System Boot Controller. All of that is taken into account in the Baikal-T1-specific DW APB SSI glue driver implemented by means of the DW SPI core module. Co-developed-by: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru> Signed-off-by: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Link: https://lore.kernel.org/r/20201007235511.4935-22-Sergey.Semin@baikalelectronics.ru Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/Makefile')
-rw-r--r--drivers/spi/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index cf955ea803cd..21dc75842aca 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -39,6 +39,7 @@ obj-$(CONFIG_SPI_DLN2) += spi-dln2.o
obj-$(CONFIG_SPI_DESIGNWARE) += spi-dw.o
spi-dw-y := spi-dw-core.o
spi-dw-$(CONFIG_SPI_DW_DMA) += spi-dw-dma.o
+obj-$(CONFIG_SPI_DW_BT1) += spi-dw-bt1.o
obj-$(CONFIG_SPI_DW_MMIO) += spi-dw-mmio.o
obj-$(CONFIG_SPI_DW_PCI) += spi-dw-pci.o
obj-$(CONFIG_SPI_EFM32) += spi-efm32.o