Unverified Commit 2ea9b08a authored by Mauro Lima's avatar Mauro Lima Committed by Mark Brown
Browse files

spi: intel: Update help text of PCI and Platform drivers 



Modern intel hardware uses controllers that work in hardware
sequencing mode. In this mode, the controller exposes a subset
of operations, like read, write and erase, making it easier
and less error-prone for use.
On the other hand, most of the controllers handled by the
platform driver use software sequencing that exposes the
entire set of operations i.e. exposes the low level SPI-NOR
opcodes to the software for use.
Update PCI and Platform help text with this information.

Signed-off-by: default avatarMauro Lima <mauro.lima@eclypsium.com>
Acked-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20230210164158.211065-1-mauro.lima@eclypsium.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 3c708a0c

drivers/spi/Kconfig

+10 −10
Original line number Diff line number Diff line
@@ -454,13 +454,12 @@ config SPI_INTEL_PCI 
	select SPI_INTEL

	help

	  This enables PCI support for the Intel PCH/PCU SPI controller in

	  master mode. This controller is present in modern Intel hardware

	  and is used to hold BIOS and other persistent settings. This

	  driver only supports hardware sequencing mode. Using this

	  driver it is possible to upgrade BIOS directly from Linux.



	  Say N here unless you know what you are doing. Overwriting the

	  SPI flash may render the system unbootable.

	  master mode. This controller is used to hold BIOS and other

	  persistent settings. Controllers present in modern Intel hardware

	  only work in hardware sequencing mode, this means that the

	  controller exposes a subset of operations that makes it safer to

	  use. Using this driver it is possible to upgrade BIOS directly

	  from Linux.



	  To compile this driver as a module, choose M here: the module

	  will be called spi-intel-pci.
@@ -473,9 +472,10 @@ config SPI_INTEL_PLATFORM 
	help

	  This enables platform support for the Intel PCH/PCU SPI

	  controller in master mode that is used to hold BIOS and other

	  persistent settings. Most of these controllers are using

	  software sequencing mode. Using this driver it is possible to

	  upgrade BIOS directly from Linux.

	  persistent settings. Most of these controllers work in

	  software sequencing mode, which means that the controller

	  exposes the low level SPI-NOR opcodes to the software. Using

	  this driver it is possible to upgrade BIOS directly from Linux.



	  Say N here unless you know what you are doing. Overwriting the

	  SPI flash may render the system unbootable.