mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-01-11 17:10:13 +00:00
5cfe585d86
Add support for SpacemiT K1 PDMA controller which features 64-bit addressing capabilities. The SpacemiT K1 PDMA extends the descriptor format with additional 32-bit words for high address bits, enabling access to memory beyond 4GB boundaries. The new spacemit_k1_pdma_ops provides necessary 64-bit address handling functions and k1 specific controller configurations. Key changes: - Add ARCH_SPACEMIT dependency to Kconfig - Define new high 32-bit address registers (DDADRH, DSADRH, DTADRH) - Add DCSR_LPAEEN bit for Long Physical Address Extension Enable - Implement 64-bit operations for SpacemiT K1 PDMA Signed-off-by: Guodong Xu <guodong@riscstar.com> Link: https://lore.kernel.org/r/20250822-working_dma_0701_v2-v5-5-f5c0eda734cc@riscstar.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.