Re: [PATCH v3 3/4] pinctrl: samsung: support ExynosAuto GPIO structure
From: Krzysztof Kozlowski
Date: Sun Dec 10 2023 - 08:24:32 EST
On 08/12/2023 08:45, Jaewon Kim wrote:
> New ExynosAuto series GPIO have a different register structure.
> In the existing Exynos series, EINT control register enumerated after
Missing verb... or enumerated is past tense? I just don't get entire
sentence.
> a specific offset (e.g EXYNOS_GPIO_ECON_OFFSET, EXYNOS_GPIO_EMASK_OFFSET).
> However, from ExynosAutov920 SoC, the register that controls EINT belongs
> to each GPIO bank, and each GPIO bank has 0x1000 align.
>
> This is a structure to protect the GPIO bank using S2MPU in VM environment,
> and will only be applied in ExynosAuto series SoCs.
>
> -------------------------------------------------
> | original | ExynosAutov920 |
> |-----------------------------------------------|
> | 0x0 GPIO_CON | 0x0 GPIO_CON |
> | 0x4 GPIO_DAT | 0x4 GPIO_DAT |
> | 0x8 GPIO_PUD | 0x8 GPIO_PUD |
> | 0xc GPIO_DRV | 0xc GPIO_DRV |
> | 0x10 GPIO_CONPDN | 0x10 GPIO_CONPDN |
> | 0x14 GPIO_PUDPDN | 0x14 GPIO_PUDPDN |
> | 0x700 EINT_CON | 0x18 EINT_CON |
This suggests there is EINT_CON per bank in old and new register layout.
I don't think it's true, so probably this could look like:
| --- | 0x18 EINT_CON (per_bank) |
| --- | 0x18 EINT_FLTCON0 (per_bank) |
| --- | 0x18 EINT_FLTCON1 (per_bank) |
| --- | 0x18 EINT_MASK (per_bank) |
| 0x700 EINT_CON (global) | 0x18 EINT_CON |
etc..
Also, please use spaces for alignment in the table.
Best regards,
Krzysztof