doc: touch-up multi-level interrupt documentation
Some very minor touch-ups for multi-level interrupt wordings and documentations to better reflects its current state. Signed-off-by: Yong Cong Sin <ycsin@meta.com>
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@ -59,7 +59,7 @@ nesting support is enabled.
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.. _multi_level_interrupts:
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Multi-level Interrupt handling
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Multi-level Interrupt Handling
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==============================
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A hardware platform can support more interrupt lines than natively-provided
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@ -68,7 +68,7 @@ hardware interrupts are combined into one line that is then routed to
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the parent controller.
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If nested interrupt controllers are supported, :kconfig:option:`CONFIG_MULTI_LEVEL_INTERRUPTS`
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should be set to 1, and :kconfig:option:`CONFIG_2ND_LEVEL_INTERRUPTS` and
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should be enabled, and :kconfig:option:`CONFIG_2ND_LEVEL_INTERRUPTS` and
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:kconfig:option:`CONFIG_3RD_LEVEL_INTERRUPTS` configured as well, based on the
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hardware architecture.
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@ -608,7 +608,7 @@ connected.
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Going Beyond the Default Supported Number of Interrupts
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-------------------------------------------------------
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When generating interrupts in the multilevel configuration, 8-bits per level is the default
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When generating interrupts in the multi-level configuration, 8-bits per level is the default
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mask used when determining which level a given interrupt code belongs to. This can become
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a problem when dealing with CPUs that support more than 255 interrupts per single
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aggregator. In this case it may be desirable to override these defaults and use a custom
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@ -616,11 +616,11 @@ number of bits per level. Regardless of how many bits used for each level, the s
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the total bits used between all levels must sum to be less than or equal to 32-bits,
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fitting into a single 32-bit integer. To modify the bit total per level, override the
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default 8 in `Kconfig.multilevel` by setting :kconfig:option:`CONFIG_1ST_LEVEL_INTERRUPT_BITS`
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for the first level, :kconfig:option:`CONFIG_2ND_LEVEL_INTERRUPT_BITS` for the second tier and
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:kconfig:option:`CONFIG_3RD_LEVEL_INTERRUPT_BITS` for the third tier. These masks control the
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for the first level, :kconfig:option:`CONFIG_2ND_LEVEL_INTERRUPT_BITS` for the second level and
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:kconfig:option:`CONFIG_3RD_LEVEL_INTERRUPT_BITS` for the third level. These masks control the
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length of the bit masks and shift to apply when generating interrupt values, when checking the
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interrupts level and converting interrupts to a different level. The logic controlling
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this can be found in `irq.h`
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this can be found in :file:`irq_multilevel.h`
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Suggested Uses
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**************
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