Re: [PATCH 04/14] mmc: mmci: Add STM32 variant

[Linus Walleij]

On Fri, Jan 12, 2018 at 1:15 PM,  <patrice.chotard@xxxxxx> wrote:

> From: Patrice Chotard <patrice.chotard@xxxxxx>
>
> STM32F4 and STM32F7 MCUs has a SDIO controller that looks like
> an ARM pl810.

PL180 you mean. Ulf can fix while applying.

> This patch adds the STM32 variant so that mmci driver supports it.
>
> Signed-off-by: Andrea Merello <andrea.merello@xxxxxxxxx>
> Signed-off-by: Patrice Chotard <patrice.chotard@xxxxxx>

(...)
> +static struct variant_data variant_stm32 = {
> +       .fifosize               = 32 * 4,
> +       .fifohalfsize           = 8 * 4,
> +       .clkreg                 = MCI_CLK_ENABLE,
> +       .clkreg_enable          = MCI_ST_UX500_HWFCEN,

If the asic designed derived this from ux500 I guess it is proper.

> +       .clkreg_8bit_bus_enable = MCI_ST_8BIT_BUS,
> +       .clkreg_neg_edge_enable = MCI_ST_UX500_NEG_EDGE,
> +       .datalength_bits        = 24,
> +       .datactrl_mask_sdio     = MCI_DPSM_ST_SDIOEN,
> +       .st_sdio                = true,

Did you test SDIO? I think we lack features for that.

> +       {
> +               .id     = 0x00880180,
> +               .mask   = 0x00ffffff,
> +               .data   = &variant_stm32,
> +       },

Since ux500 was 480180 I wonder what variants 5,6,7 are...

Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Yours,
Linus Walleij