Messages in this thread Patch in this message | | | From | Tom Fitzhenry <> | Subject | [PATCH] mtd: spi-nor: siliconkaiser: add support for sk25lp128 | Date | Fri, 3 Jun 2022 23:59:34 +1000 |
| |
Add support for the siliconkaiser sk25lp128 chip.
This is the flash chip used in the PinePhone Pro[0], found by physical inspection of the board.[1]
I cannot find a datasheet, but this chip supports SFDP.
This patch depends on SNOR_ID3().[2]
https://lore.kernel.org/all/20220510140232.3519184-1-michael@walle.cc/
Tested done: checked that the Pinephone Pro boots when a ROM is written to /dev/mtdblock0.
$ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp 53464450060101ff00060110300000ff9d05010380000002ffffffffffff ffffffffffffffffffffffffffffffffffffe520f9ffffffff0744eb086b 083b80bbfeffffffffff00ffffff44eb0c200f5210d800ff234ac90082d8 11c7cccd68467a757a75f7a2d55c4a422cfff030c080ffffffffffffffff ffffffffffffffff501950169cf9c0648fecffff $ md5sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp de4d6be54e479d60859b0ca8a0ee9216 /sys/bus/spi/devices/spi0.0/spi-nor/sfdp $ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id 257018 $ cat /sys/bus/spi/devices/spi0.0/spi-nor/partname sk25lp128 $ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer siliconkaiser
0. https://wiki.pine64.org/wiki/PinePhone_Pro#Specifications 1. Thanks to https://github.com/Biktorgj for finding that. 2. "mtd: spi-nor: introduce SNOR_ID3()" https://lore.kernel.org/all/20220510140232.3519184-1-michael@walle.cc/
Link: https://lore.kernel.org/all/20220510140232.3519184-1-michael@walle.cc/ Signed-off-by: Tom Fitzhenry <tom@tom-fitzhenry.me.uk> --- drivers/mtd/spi-nor/Makefile | 1 + drivers/mtd/spi-nor/core.c | 1 + drivers/mtd/spi-nor/core.h | 1 + drivers/mtd/spi-nor/siliconkaiser.c | 15 +++++++++++++++ 4 files changed, 18 insertions(+) create mode 100644 drivers/mtd/spi-nor/siliconkaiser.c
diff --git a/drivers/mtd/spi-nor/Makefile b/drivers/mtd/spi-nor/Makefile index e347b435a038..314ac7773369 100644 --- a/drivers/mtd/spi-nor/Makefile +++ b/drivers/mtd/spi-nor/Makefile @@ -12,6 +12,7 @@ spi-nor-objs += intel.o spi-nor-objs += issi.o spi-nor-objs += macronix.o spi-nor-objs += micron-st.o +spi-nor-objs += siliconkaiser.o spi-nor-objs += spansion.o spi-nor-objs += sst.o spi-nor-objs += winbond.o diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index fdde80d9f388..e542d3009915 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -1624,6 +1624,7 @@ static const struct spi_nor_manufacturer *manufacturers[] = { &spi_nor_issi, &spi_nor_macronix, &spi_nor_micron, + &spi_nor_siliconkaiser, &spi_nor_st, &spi_nor_spansion, &spi_nor_sst, diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h index 87183cff3251..8997099f6c5e 100644 --- a/drivers/mtd/spi-nor/core.h +++ b/drivers/mtd/spi-nor/core.h @@ -625,6 +625,7 @@ extern const struct spi_nor_manufacturer spi_nor_intel; extern const struct spi_nor_manufacturer spi_nor_issi; extern const struct spi_nor_manufacturer spi_nor_macronix; extern const struct spi_nor_manufacturer spi_nor_micron; +extern const struct spi_nor_manufacturer spi_nor_siliconkaiser; extern const struct spi_nor_manufacturer spi_nor_st; extern const struct spi_nor_manufacturer spi_nor_spansion; extern const struct spi_nor_manufacturer spi_nor_sst; diff --git a/drivers/mtd/spi-nor/siliconkaiser.c b/drivers/mtd/spi-nor/siliconkaiser.c new file mode 100644 index 000000000000..82bb6094caa9 --- /dev/null +++ b/drivers/mtd/spi-nor/siliconkaiser.c @@ -0,0 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/mtd/spi-nor.h> + +#include "core.h" + +static const struct flash_info siliconkaiser_nor_parts[] = { + { "sk25lp128", SNOR_ID3(0x257018) }, +}; + +const struct spi_nor_manufacturer spi_nor_siliconkaiser = { + .name = "siliconkaiser", + .parts = siliconkaiser_nor_parts, + .nparts = ARRAY_SIZE(siliconkaiser_nor_parts), +}; -- 2.36.0
| |