This series adds support for the SPI-NAND flash controller on the RTL9300 family of SoCs. There are 2 physical chip selects which are called SPI_MST_CS0 and SPI_MST_CS1 in the datasheet. Via some pin-strapping these can be assigned to either the SPI-NOR controller or the SPI-NAND controller. Which means you can end up with the following permutations SPI-Flash Boot Model SPI_MST_CS0 SPI_MST_CS1 ---------- ----------- ----------- NOR x1 NOR-CS0 X NOR x2 NOR-CS0 NOR-CS1 NAND x1 NAND-CS0 X NAND x2 NAND-CS0 NAND-CS1 NOR+NAND NOR-CS0 NAND-CS0 Chris Packham (3): dt-bindings: spi: Add realtek,rtl9301-snand mips: dts: realtek: Add SPI NAND controller spi: spi-mem: Add Realtek SPI-NAND controller .../bindings/spi/realtek,rtl9301-snand.yaml | 62 +++ MAINTAINERS | 6 + arch/mips/boot/dts/realtek/rtl930x.dtsi | 13 + drivers/spi/Kconfig | 11 + drivers/spi/Makefile | 1 + drivers/spi/spi-realtek-rtl-snand.c | 405 ++++++++++++++++++ 6 files changed, 498 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/realtek,rtl9301-snand.yaml create mode 100644 drivers/spi/spi-realtek-rtl-snand.c -- 2.47.0
