kernel/drivers/spi/spi-realtek-rtl-snand.c, branch linux-rolling-stable

spi: realtek-rtl-snand: Drop unneeded assignment for cache_type

2025-02-03T00:41:38Z

REGCACHE_NONE is the default type of the cache when not provided. Drop unneeded explicit assignment to it. Note, it's defined to 0, and if ever be redefined, it will break literally a lot of the drivers, so it very unlikely to happen. Signed-off-by: Andy Shevchenko Link: https://patch.msgid.link/20250129152925.1804071-1-andriy.shevchenko@linux.intel.com Reviewed-by: Chris Packham Signed-off-by: Mark Brown

spi: spi-mem: rtl-snand: Correctly handle DMA transfers

2024-11-01T14:48:53Z

The RTL9300 has some limitations on the maximum DMA transfers possible. For reads this is 2080 bytes (520*4) for writes this is 520 bytes. Deal with this by splitting transfers into appropriately sized parts. Fixes: 42d20a6a61b8 ("spi: spi-mem: Add Realtek SPI-NAND controller") Signed-off-by: Chris Packham Link: https://patch.msgid.link/20241030194920.3202282-1-chris.packham@alliedtelesis.co.nz Signed-off-by: Mark Brown

spi: spi-mem: Add Realtek SPI-NAND controller

2024-10-21T11:49:38Z

Add a driver for the SPI-NAND controller on the RTL9300 family of devices. The controller supports * Serial/Dual/Quad data with * PIO and DMA data read/write operation * Configurable flash access timing There is a separate ECC controller on the RTL9300 which isn't currently supported (instead we rely on the on-die ECC supported by most SPI-NAND chips). Signed-off-by: Chris Packham Link: https://patch.msgid.link/20241015225434.3970360-4-chris.packham@alliedtelesis.co.nz Signed-off-by: Mark Brown