linux-kernel - Re: [PATCH v2 2/2] mmc: mtk-sd: add support for mt7988

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Message-ID: <89e54baa-0f05-47d7-8d81-68862f822c59@collabora.com>
Date: Mon, 7 Oct 2024 09:58:52 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Frank Wunderlich <linux@...web.de>,
 Chaotian Jing <chaotian.jing@...iatek.com>,
 Ulf Hansson <ulf.hansson@...aro.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>,
 Wenbin Mei <wenbin.mei@...iatek.com>
Cc: Frank Wunderlich <frank-w@...lic-files.de>, linux-mmc@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org,
 daniel@...rotopia.org, john@...ozen.org, eladwf@...il.com,
 ansuelsmth@...il.com
Subject: Re: [PATCH v2 2/2] mmc: mtk-sd: add support for mt7988

Il 06/10/24 17:34, Frank Wunderlich ha scritto:
> From: Frank Wunderlich <frank-w@...lic-files.de>
> 
> Add support for mmc on MT7988 SoC.
> 
> Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>

There's no need to add yet one more duplicate mtk_mmc_compatible platform
data, nor one more compatible string to this driver, as this is exactly
the same as mt7986.

Please reuse the MT7986 compatible; in DT you'll have:

compatible = "mediatek,mt7988-mmc", "mediatek,mt7986-mmc";

Cheers,
Angelo

> ---
>   drivers/mmc/host/mtk-sd.c | 14 ++++++++++++++
>   1 file changed, 14 insertions(+)
> 
> diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
> index 89018b6c97b9..6d5afe51a61d 100644
> --- a/drivers/mmc/host/mtk-sd.c
> +++ b/drivers/mmc/host/mtk-sd.c
> @@ -571,6 +571,19 @@ static const struct mtk_mmc_compatible mt7986_compat = {
>   	.support_64g = true,
>   };
>   
> +static const struct mtk_mmc_compatible mt7988_compat = {
> +	.clk_div_bits = 12,
> +	.recheck_sdio_irq = true,
> +	.hs400_tune = false,
> +	.pad_tune_reg = MSDC_PAD_TUNE0,
> +	.async_fifo = true,
> +	.data_tune = true,
> +	.busy_check = true,
> +	.stop_clk_fix = true,
> +	.enhance_rx = true,
> +	.support_64g = true,
> +};
> +
>   static const struct mtk_mmc_compatible mt8135_compat = {
>   	.clk_div_bits = 8,
>   	.recheck_sdio_irq = true,
> @@ -629,6 +642,7 @@ static const struct of_device_id msdc_of_ids[] = {
>   	{ .compatible = "mediatek,mt7620-mmc", .data = &mt7620_compat},
>   	{ .compatible = "mediatek,mt7622-mmc", .data = &mt7622_compat},
>   	{ .compatible = "mediatek,mt7986-mmc", .data = &mt7986_compat},
> +	{ .compatible = "mediatek,mt7988-mmc", .data = &mt7988_compat},
>   	{ .compatible = "mediatek,mt8135-mmc", .data = &mt8135_compat},
>   	{ .compatible = "mediatek,mt8173-mmc", .data = &mt8173_compat},
>   	{ .compatible = "mediatek,mt8183-mmc", .data = &mt8183_compat},