On 2025/1/14 07:16, Rob Herring wrote:
>> From: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
>>
>> For child node of /reserved-memory, its property 'reg' may contain
>> multiple regions, but fdt_scan_reserved_mem_reg_nodes() only takes
>> into account the first region, and miss remaining regions.
>>
>> Give warning message when missing remaining regions.
> Can't we just fix it to support more than 1 entry?
actually, i ever considered supporting more entries.
and find out there are no simple approach to achieve this aim.
it may need to change 'struct reserved_mem' to support multiple regions
that may also involve 4 RESERVEDMEM_OF_DECLARE instances.
RESERVEDMEM_OF_DECLARE(tegra210_emc_table, "nvidia,tegra210-emc-table",
tegra210_emc_table_init);
RESERVEDMEM_OF_DECLARE(dma, "shared-dma-pool", rmem_dma_setup);
RESERVEDMEM_OF_DECLARE(cma, "shared-dma-pool", rmem_cma_setup);
RESERVEDMEM_OF_DECLARE(dma, "restricted-dma-pool", rmem_swiotlb_setup);
so i finally chose this warning way due to simplification and low risk.
