[PATCH v3 1/4] mtd: spi: spi-nor: Add Rock pi 4b new flash chip

[Xavier Drudis Ferran]

Radxa Rock Pi 4B from version 1.4 on carries a 4MiB XTX Technology Inc
25F32B SPI NOR Flash.  (previous versions had pads where users could
solder different chips).

Add its parameters to spi-nor-ids.c so U-Boot can discover it and
(after further changes) we can boot from SPI.

Note that the Flash is declared to be dual and quad capable because
the datasheet [4] says so but I couldn't try it because in Rock Pi 4
it is not wired for QuadSPI, and rk3399 does not seem to support dual
SPI either (or I couldn't find any register to configure spi1tx and
spi1rx as bidirectional).

But the same Flash part could be used as in quad or dual model in some
other board.

Likewise locks are in the datasheet but untested.

The part has been added to downstream U-Boot [1] and linux [2] [3]:

Changed from v2:

     - no change

Changed from v1:

     - no change

Link: [1] https://github.com/armbian/build/commit/c41cb4c454570127ad3238f6b901fbf3aa773c
Link: [2] https://github.com/radxa/kernel/blob/release-4.4-rockpi4/drivers/mtd/spi-nor/spi-nor.c
Link: [3] https://github.com/radxa/kernel/commit/8216f17965de7bc7ced7092aab0e2bfe16838a4
Link: [4] https://www.xtxtech.com/download/?AId=157


Signed-off-by: Xavier Drudis Ferran <xdrudis at tinet.cat>

Cc: Jagan Teki <jagan at amarulasolutions.com>
Cc: Vignesh R <vigneshr at ti.com>

---
 drivers/mtd/spi/spi-nor-ids.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/spi/spi-nor-ids.c b/drivers/mtd/spi/spi-nor-ids.c
index 4fe8b0d92c..b09df00bab 100644
--- a/drivers/mtd/spi/spi-nor-ids.c
+++ b/drivers/mtd/spi/spi-nor-ids.c
@@ -452,6 +452,9 @@ const struct flash_info spi_nor_ids[] = {
 #ifdef CONFIG_SPI_FLASH_XTX
 	/* XTX Technology (Shenzhen) Limited */
 	{ INFO("xt25f128b", 0x0b4018, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+	{ INFO("xt25f32b", 0x0b4016, 0, 64 * 1024, 64,
+	       SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ
+	       | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_SST26LOCK) },
 #endif
 	{ },
 };
-- 
2.20.1