linux-kernel - Re: [PATCH] mmc: mtk-sd: disable new_tx/rx and modify related settings for mt8189

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Message-ID: <CAPDyKFrGgf1+vYVA6S1SJTZ8+n9WJo91e1VWeWq8p3RNHz1qtw@mail.gmail.com>
Date: Wed, 4 Feb 2026 15:35:00 +0100
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Cathy Xu <ot_cathy.xu@...iatek.com>
Cc: Chaotian Jing <chaotian.jing@...iatek.com>, Matthias Brugger <matthias.bgg@...il.com>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, linux-mmc@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-mediatek@...ts.infradead.org, Mengqi Zhang <Mengqi.Zhang@...iatek.com>, 
	Wenbin Mei <Wenbin.Mei@...iatek.com>, Andy-ld Lu <Andy-ld.Lu@...iatek.com>, 
	Yong Mao <yong.mao@...iatek.com>
Subject: Re: [PATCH] mmc: mtk-sd: disable new_tx/rx and modify related
 settings for mt8189

On Wed, 4 Feb 2026 at 03:09, Cathy Xu <ot_cathy.xu@...iatek.com> wrote:
>
> Disable new_tx/rx and modify related settings helps avoid data
> transmission instability, and better compatibility for mt8189.
>
> Signed-off-by: Cathy Xu <ot_cathy.xu@...iatek.com>

Should this have a fixes/stable tag?

Kind regards
Uffe

> ---
>  drivers/mmc/host/mtk-sd.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
> index 302ac8529c4f..b2680cc054bd 100644
> --- a/drivers/mmc/host/mtk-sd.c
> +++ b/drivers/mmc/host/mtk-sd.c
> @@ -682,15 +682,15 @@ static const struct mtk_mmc_compatible mt8189_compat = {
>         .needs_top_base = true,
>         .pad_tune_reg = MSDC_PAD_TUNE0,
>         .async_fifo = true,
> -       .data_tune = true,
> +       .data_tune = false,
>         .busy_check = true,
>         .stop_clk_fix = true,
> -       .stop_dly_sel = 1,
> -       .pop_en_cnt = 2,
> +       .stop_dly_sel = 3,
> +       .pop_en_cnt = 8,
>         .enhance_rx = true,
>         .support_64g = true,
> -       .support_new_tx = true,
> -       .support_new_rx = true,
> +       .support_new_tx = false,
> +       .support_new_rx = false,
>         .support_spm_res_release = true,
>  };
>
> --
> 2.45.2
>