[PATCH v2 1/5] mtd: si: spi-nor: Add Rock pi 4b new flash chip

Xavier Drudis Ferran xdrudis at tinet.cat
Fri Jul 15 18:27:12 CEST 2022

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.

Changes from v1:
   none (just retested with current next)

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

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 67278c40e3..b8df694202 100644
--- a/drivers/mtd/spi/spi-nor-ids.c
+++ b/drivers/mtd/spi/spi-nor-ids.c
@@ -425,6 +425,9 @@ const struct flash_info spi_nor_ids[] = {
 	/* 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,
 	{ },

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