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From: Ulf Hansson <ulf.hansson@linaro.org>
To: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	linux-clk <linux-clk@vger.kernel.org>,
	Mike Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@codeaurora.org>,
	"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>
Subject: Re: [PATCH 2/2] mmc: sunxi: Reset the device at probe time
Date: Wed, 30 Aug 2017 15:14:11 +0200	[thread overview]
Message-ID: <CAPDyKFqAyhB1C096YjXNz2iAPL0Vrr5-hsyoiL8meho1b0qNPg@mail.gmail.com> (raw)
In-Reply-To: <20170825094953.3247-2-maxime.ripard@free-electrons.com>

On 25 August 2017 at 11:49, Maxime Ripard
<maxime.ripard@free-electrons.com> wrote:
> We might be into some troubles if the bootloader misconfigured the MMC
> controller.
>
> We currently only de-assert the reset line at probe time, which means that
> if the device was already out of reset, we're going to keep whatever state
> was set already.
>
> Switch to a reset instead of the deassert to have a device in a pristine
> state when we start operating.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Thanks, applied for next!

Kind regards
Uffe

> ---
>  drivers/mmc/host/sunxi-mmc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
> index da5f46a14497..53c970fe0873 100644
> --- a/drivers/mmc/host/sunxi-mmc.c
> +++ b/drivers/mmc/host/sunxi-mmc.c
> @@ -1242,7 +1242,7 @@ static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host,
>         }
>
>         if (!IS_ERR(host->reset)) {
> -               ret = reset_control_deassert(host->reset);
> +               ret = reset_control_reset(host->reset);
>                 if (ret) {
>                         dev_err(&pdev->dev, "reset err %d\n", ret);
>                         goto error_disable_clk_sample;
> --
> 2.13.5
>

  reply	other threads:[~2017-08-30 13:14 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-25  9:49 [PATCH 1/2] clk: sunxi-ng: Provide a default reset hook Maxime Ripard
2017-08-25  9:49 ` [PATCH 2/2] mmc: sunxi: Reset the device at probe time Maxime Ripard
2017-08-30 13:14   ` Ulf Hansson [this message]
2017-08-27 13:01 ` [PATCH 1/2] clk: sunxi-ng: Provide a default reset hook icenowy
2017-08-27 13:10   ` Chen-Yu Tsai
     [not found] ` <20170825094953.3247-1-maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-08-30 12:29   ` Ulf Hansson
2017-08-30 12:36     ` Maxime Ripard
2017-08-30 13:14       ` Ulf Hansson
2017-09-01 20:30         ` Stephen Boyd

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