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Subject[PATCH] spi-nor: Add support for xt25f128b
Date
This adds support for the xt25f128b as found on the rockpi4b SBC.

Signed-off-by: Andreas Rammhold <andreas@rammhold.de>
---

This continues the efforts done in [1] & [2] that went stale. I've
tested this patch on my RockPi4b which only has the xt25f128b (and not
the xt25f32b as also propsed in [2]). I have tried to obtain a copy of
the datasheets but was unable to find them. Not sure whre you would get
them.

While [1] was already for the new spi-nor layout it was missing the bits
in the core.{c,h} files.


[1]: https://patchwork.ozlabs.org/project/linux-mtd/patch/CAMgqO2y9MYDj6antOaWLBRKU8vGEwqCB-Y1TkXTSWsmsed+W6A@mail.gmail.com/
[2]: https://patchwork.ozlabs.org/project/linux-mtd/patch/20200206171941.GA2398@makrotopia.org/

drivers/mtd/spi-nor/Makefile | 1 +
drivers/mtd/spi-nor/core.c | 1 +
drivers/mtd/spi-nor/core.h | 1 +
drivers/mtd/spi-nor/xtx.c | 16 ++++++++++++++++
4 files changed, 19 insertions(+)
create mode 100644 drivers/mtd/spi-nor/xtx.c

diff --git a/drivers/mtd/spi-nor/Makefile b/drivers/mtd/spi-nor/Makefile
index 653923896205..3f7a52d7fa0b 100644
--- a/drivers/mtd/spi-nor/Makefile
+++ b/drivers/mtd/spi-nor/Makefile
@@ -17,6 +17,7 @@ spi-nor-objs += sst.o
spi-nor-objs += winbond.o
spi-nor-objs += xilinx.o
spi-nor-objs += xmc.o
+spi-nor-objs += xtx.o
obj-$(CONFIG_MTD_SPI_NOR) += spi-nor.o

obj-$(CONFIG_MTD_SPI_NOR) += controllers/
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index f0ae7a01703a..ca1988554945 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -2024,6 +2024,7 @@ static const struct spi_nor_manufacturer *manufacturers[] = {
&spi_nor_winbond,
&spi_nor_xilinx,
&spi_nor_xmc,
+ &spi_nor_xtx,
};

static const struct flash_info *
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index 6f2f6b27173f..cea8c0c25c9f 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -398,6 +398,7 @@ extern const struct spi_nor_manufacturer spi_nor_sst;
extern const struct spi_nor_manufacturer spi_nor_winbond;
extern const struct spi_nor_manufacturer spi_nor_xilinx;
extern const struct spi_nor_manufacturer spi_nor_xmc;
+extern const struct spi_nor_manufacturer spi_nor_xtx;

int spi_nor_write_enable(struct spi_nor *nor);
int spi_nor_write_disable(struct spi_nor *nor);
diff --git a/drivers/mtd/spi-nor/xtx.c b/drivers/mtd/spi-nor/xtx.c
new file mode 100644
index 000000000000..a10102d8b3e2
--- /dev/null
+++ b/drivers/mtd/spi-nor/xtx.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/mtd/spi-nor.h>
+
+#include "core.h"
+
+static const struct flash_info xtx_parts[] = {
+ /* XTX (Shenzhen Xin Tian Xia Tech) */
+ { "xt25f128b", INFO(0x0b4018, 0, 64 * 1024, 256, SECT_4K) },
+};
+
+const struct spi_nor_manufacturer spi_nor_xtx = {
+ .name = "xtx",
+ .parts = xtx_parts,
+ .nparts = ARRAY_SIZE(xtx_parts),
+};
--
2.29.2
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