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author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-22 04:33:57 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-22 04:33:57 +0300 |
commit | ad9c6ee642a61adae93dfa35582b5af16dc5173a (patch) | |
tree | 97c1878834a802847975bb9d51b73a3c8b6a9ae6 /Documentation/driver-api | |
parent | d6ccf45113fb6799885950293401e4b104c9b276 (diff) | |
parent | 89b35e3f28514087d3f1e28e8f5634fbfd07c554 (diff) |
Merge tag 'spi-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"The overwhelming bulk of this pull request is a change from Uwe
Kleine-König which changes the return type of the remove() function to
void as part of some wider work he's doing to do this for all bus
types, causing updates to most SPI device drivers. The branch with
that on has been cross merged with a couple of other trees which added
new SPI drivers this cycle, I'm not expecting any build issues
resulting from the change.
Otherwise it's been a relatively quiet release with some new device
support, a few minor features and the welcome completion of the
conversion of the subsystem to use GPIO descriptors rather than
numbers:
- Change return type of remove() to void.
- Completion of the conversion of SPI controller drivers to use GPIO
descriptors rather than numbers.
- Quite a few DT schema conversions.
- Support for multiple SPI devices on a bus in ACPI systems.
- Big overhaul of the PXA2xx SPI driver.
- Support for AMD AMDI0062, Intel Raptor Lake, Mediatek MT7986 and
MT8186, nVidia Tegra210 and Tegra234, Renesas RZ/V2L, Tesla FSD and
Sunplus SP7021"
[ And this is obviously where that spi change that snuck into the
regulator tree _should_ have been :^]
* tag 'spi-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (124 commits)
spi: fsi: Implement a timeout for polling status
spi: Fix erroneous sgs value with min_t()
spi: tegra20: Use of_device_get_match_data()
spi: mediatek: add ipm design support for MT7986
spi: Add compatible for MT7986
spi: sun4i: fix typos in comments
spi: mediatek: support tick_delay without enhance_timing
spi: Update clock-names property for arm pl022
spi: rockchip-sfc: fix platform_get_irq.cocci warning
spi: s3c64xx: Add spi port configuration for Tesla FSD SoC
spi: dt-bindings: samsung: Add fsd spi compatible
spi: topcliff-pch: Prevent usage of potentially stale DMA device
spi: tegra210-quad: combined sequence mode
spi: tegra210-quad: add acpi support
spi: npcm-fiu: Fix typo ("npxm")
spi: Fix Tegra QSPI example
spi: qup: replace spin_lock_irqsave by spin_lock in hard IRQ
spi: cadence: fix platform_get_irq.cocci warning
spi: Update NXP Flexspi maintainer details
dt-bindings: mfd: maxim,max77802: Convert to dtschema
...
Diffstat (limited to 'Documentation/driver-api')
-rw-r--r-- | Documentation/driver-api/mtd/index.rst | 2 | ||||
-rw-r--r-- | Documentation/driver-api/mtd/spi-intel.rst (renamed from Documentation/driver-api/mtd/intel-spi.rst) | 8 |
2 files changed, 5 insertions, 5 deletions
diff --git a/Documentation/driver-api/mtd/index.rst b/Documentation/driver-api/mtd/index.rst index 436ba5a851d7..6a4278f409d7 100644 --- a/Documentation/driver-api/mtd/index.rst +++ b/Documentation/driver-api/mtd/index.rst @@ -7,6 +7,6 @@ Memory Technology Device (MTD) .. toctree:: :maxdepth: 1 - intel-spi + spi-intel nand_ecc spi-nor diff --git a/Documentation/driver-api/mtd/intel-spi.rst b/Documentation/driver-api/mtd/spi-intel.rst index 0465f6879262..df854f20ead1 100644 --- a/Documentation/driver-api/mtd/intel-spi.rst +++ b/Documentation/driver-api/mtd/spi-intel.rst @@ -1,5 +1,5 @@ ============================== -Upgrading BIOS using intel-spi +Upgrading BIOS using spi-intel ============================== Many Intel CPUs like Baytrail and Braswell include SPI serial flash host @@ -11,12 +11,12 @@ avoid accidental (or on purpose) overwrite of the content. Not all manufacturers protect the SPI serial flash, mainly because it allows upgrading the BIOS image directly from an OS. -The intel-spi driver makes it possible to read and write the SPI serial +The spi-intel driver makes it possible to read and write the SPI serial flash, if certain protection bits are not set and locked. If it finds any of them set, the whole MTD device is made read-only to prevent partial overwrites. By default the driver exposes SPI serial flash contents as read-only but it can be changed from kernel command line, -passing "intel-spi.writeable=1". +passing "spi_intel.writeable=1". Please keep in mind that overwriting the BIOS image on SPI serial flash might render the machine unbootable and requires special equipment like @@ -32,7 +32,7 @@ Linux. serial flash. Distros like Debian and Fedora have this prepackaged with name "mtd-utils". - 3) Add "intel-spi.writeable=1" to the kernel command line and reboot + 3) Add "spi_intel.writeable=1" to the kernel command line and reboot the board (you can also reload the driver passing "writeable=1" as module parameter to modprobe). |