[PATCH v3 27/33] iommu/mediatek: Initialise bank HW for each a bank

[AngeloGioacchino Del Regno]

Il 23/09/21 13:58, Yong Wu ha scritto:
> The mt8195 IOMMU HW max support 5 banks, and regarding the banks'
> registers, it looks like:
> 
>   ----------------------------------------
>   |bank0  | bank1 | bank2 | bank3 | bank4|
>   ----------------------------------------
>   |global |
>   |control|         null
>   |regs   |
>   -----------------------------------------
>   |bank   |bank   |bank   |bank   |bank   |
>   |regs   |regs   |regs   |regs   |regs   |
>   |       |       |       |       |       |
>   -----------------------------------------
> 
> Each bank has some special bank registers and it share bank0's global
> control registers. this patch initialise the bank hw with the bankid.
> 
> In the hw_init, we always initialise bank0's control register since
> we don't know if the bank0 is initialised.
> 
> Additionally, About each bank's register base, always delta 0x1000.
> like bank[x + 1] = bank[x] + 0x1000.
> 
> Signed-off-by: Yong Wu <yong.wu at mediatek.com>


Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>