nds32: spi: Support spi dm driver.
Support spi driver and can detect MX25U1635E flash on AE3XX board.
Verification:
sf probe 0:0 50000000 0
spi_flash_std_probe(sf_Probr.c)
spi_flash_probe_slave(sf_Probr.c)
SF: Detected mx25u1635e with page size 256 Bytes, erase size 4 KiB, total 2 MiB
NDS32 # sf test 0x100000 0x1000
SPI flash test:
0 erase: 34 ticks, 117 KiB/s 0.936 Mbps
1 check: 15 ticks, 266 KiB/s 2.128 Mbps
2 write: 21 ticks, 190 KiB/s 1.520 Mbps
3 read: 11 ticks, 363 KiB/s 2.904 Mbps
Test passed
0 erase: 34 ticks, 117 KiB/s 0.936 Mbps
1 check: 15 ticks, 266 KiB/s 2.128 Mbps
2 write: 21 ticks, 190 KiB/s 1.520 Mbps
3 read: 11 ticks, 363 KiB/s 2.904 Mbps
Signed-off-by: rick <rick@andestech.com>
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 3c5582a..88da9a4 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -210,6 +210,13 @@
used to access the SPI NOR flash on platforms embedding this
Freescale IP core.
+config NDS_AE3XX_SPI
+ bool "Andestech AE3XX SPI driver"
+ help
+ Enable the Andestech AE3XX SPI driver. This driver can be
+ used to access the SPI flash on platforms embedding this
+ Andestech IP core.
+
config TI_QSPI
bool "TI QSPI driver"
help