spi: mtk_snor: add support for MTK SPI NOR controller
This patch adds support for MTK SPI NOR controller, which you
can see on mt7622 & mt7629.
1. This controller is designed only for SPI NOR. We can't adjust
its bus clock dynamically. Set clock in dts instead.
2. This controller only supports 1-1-1 write mode.
3. Remove mtk_snor_match_read() since upper SPI-MEM layer already
handles command.
4. sf read/write/update commands are tested with this driver.
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index d06949d..cfe4fae 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -37,6 +37,7 @@
obj-$(CONFIG_MPC8XX_SPI) += mpc8xx_spi.o
obj-$(CONFIG_MPC8XXX_SPI) += mpc8xxx_spi.o
obj-$(CONFIG_MTK_SNFI_SPI) += mtk_snfi_spi.o
+obj-$(CONFIG_MTK_SNOR) += mtk_snor.o
obj-$(CONFIG_MT7620_SPI) += mt7620_spi.o
obj-$(CONFIG_MT7621_SPI) += mt7621_spi.o
obj-$(CONFIG_MSCC_BB_SPI) += mscc_bb_spi.o