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| author | Mark Brown <broonie@kernel.org> | 2025-04-30 23:33:59 +0900 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-04-30 23:33:59 +0900 |
| commit | a7f035c2c72496cf7ac34bfaa8c289e0d4c45836 (patch) | |
| tree | 1962110083a27f50a6b0f08d44e6f225e6bd7cbd /scripts/generate_rust_analyzer.py | |
| parent | df8c5ad0f56635341bfe3f59ef7c6473e389abc4 (diff) | |
| parent | e6702c44c2adb28b62f81de498e9b1e4562ce660 (diff) | |
spi: axi-spi-engine: offload instruction optimization
Merge series from David Lechner <dlechner@baylibre.com>:
In order to achieve a 4 MSPS rate on a 16-bit ADC with a 80 MHz SCLK
using the SPI offload feature of the AXI SPI Engine, we need to shave
off some time that is spent executing unnecessary instructions. There
are a few one-time setup instructions that can be moved so that they
execute only once when the SPI offload trigger is enabled rather than
repeating each time the offload is triggered. Additionally, a recent
change to the IP block allows dropping the SYNC instruction completely.
With these changes, we are left with only the 3 instructions that are
needed to to assert CS, transfer the data, and deassert CS. This makes
3 + 16 * 12.5 ns = 237.5 ns < 250 ns which is comfortably within the
available time period.
Diffstat (limited to 'scripts/generate_rust_analyzer.py')
| -rwxr-xr-x | scripts/generate_rust_analyzer.py | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py index cd41bc906fbd..fe663dd0c43b 100755 --- a/scripts/generate_rust_analyzer.py +++ b/scripts/generate_rust_analyzer.py @@ -112,6 +112,12 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs): cfg=["kernel"], ) + append_crate( + "ffi", + srctree / "rust" / "ffi.rs", + ["core", "compiler_builtins"], + ) + def append_crate_with_generated( display_name, deps, @@ -131,9 +137,9 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs): "exclude_dirs": [], } - append_crate_with_generated("bindings", ["core"]) - append_crate_with_generated("uapi", ["core"]) - append_crate_with_generated("kernel", ["core", "macros", "build_error", "pin_init", "bindings", "uapi"]) + append_crate_with_generated("bindings", ["core", "ffi"]) + append_crate_with_generated("uapi", ["core", "ffi"]) + append_crate_with_generated("kernel", ["core", "macros", "build_error", "pin_init", "ffi", "bindings", "uapi"]) def is_root_crate(build_file, target): try: |