drivers: cache: bflb: Introduce BL60x and BL70x cache #95627
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rebased on main to fix build failure. |
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josuah
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Oct 7, 2025
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A few questions but all seems clear to me.
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Pull Request Overview
This PR introduces a cache driver for the Bouffalo Lab L1C cache used in BL60x and BL70x SoCs. The changes enable cache management support for these platforms and integrate the new cache driver into the build system.
Key changes include:
- Added a new cache driver (
cache_bflb_l1c.c) implementing the L1C cache control API - Configured BL60x and BL70x SoCs to enable cache management capabilities
- Added device tree bindings and nodes for the cache controller
Reviewed Changes
Copilot reviewed 15 out of 15 changed files in this pull request and generated 1 comment.
Show a summary per file
| File | Description |
|---|---|
| drivers/cache/cache_bflb_l1c.c | New cache driver implementation for BFLB L1C cache |
| drivers/cache/Kconfig.bflb | Configuration options for the BFLB cache driver |
| drivers/cache/Kconfig | Integration of BFLB cache configuration |
| drivers/cache/CMakeLists.txt | Build system integration for the new cache driver |
| dts/bindings/cache/bflb,l1c.yaml | Device tree binding definition for the L1C cache |
| dts/riscv/bflb/bl60x.dtsi | Device tree node for BL60x cache controller |
| dts/riscv/bflb/bl70x.dtsi | Device tree node for BL70x cache controller |
| soc/bflb/bl60x/Kconfig | Cache capability selection for BL60x |
| soc/bflb/bl60x/Kconfig.defconfig | Cache type configuration for BL60x |
| soc/bflb/bl60x/CMakeLists.txt | Code relocation configuration for BL60x cache driver |
| soc/bflb/bl60x/soc.c | Cache initialization in BL60x early init |
| soc/bflb/bl70x/Kconfig | Cache capability selection for BL70x |
| soc/bflb/bl70x/Kconfig.defconfig | Cache type configuration for BL70x |
| soc/bflb/bl70x/CMakeLists.txt | Code relocation configuration for BL70x cache driver |
| soc/bflb/bl70x/soc.c | Cache initialization in BL70x early init |
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Adds binding for the bflb L1C cache control Signed-off-by: Camille BAUD <[email protected]>
Adds BL60x and BL70x cache nodes Signed-off-by: Camille BAUD <[email protected]>
Introduce Bouffalo Lab L1C cache management functions This allows invalidating instructions and data on BL60x and BL70x Signed-off-by: Camille BAUD <[email protected]>
Enables controlling the cache of BL60x and BL70x Signed-off-by: Camille BAUD <[email protected]>
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josuah
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Oct 9, 2025
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It is enabled by default, so does not need any change to be tested on CI. And thehre is no build_all test for cache specifically, so no twister job triggered by this PR.
An improvement to do in Twister rather than this PR AFAIU.
Thanks for waiting.
kartben
approved these changes
Oct 9, 2025
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Introduces a cache driver for bflb L1C cache used in BL60x and BL70x.