[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <20150513122200.GU3394@x1>
Date: Wed, 13 May 2015 13:22:00 +0100
From: Lee Jones <lee.jones@...aro.org>
To: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
Cc: broonie@...nel.org, lgirdwood@...il.com, sameo@...ux.intel.com,
patches@...nsource.wolfsonmicro.com, linux-kernel@...r.kernel.org
Subject: Re: [RESEND PATCH v3 10/10] mfd: wm5110: Add delay before releasing
reset line
On Mon, 11 May 2015, Charles Keepax wrote:
> On the wm5110 it is important the reset line is held for slightly longer
> to ensure the device starts up well. This patch adds a 5mS delay for
> this.
>
> Signed-off-by: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
> Acked-by: Lee Jones <lee.jones@...aro.org>
> ---
> drivers/mfd/arizona-core.c | 10 ++++++++++
> 1 files changed, 10 insertions(+), 0 deletions(-)
Applied, thanks.
> diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
> index f1ff68a..93e4d94 100644
> --- a/drivers/mfd/arizona-core.c
> +++ b/drivers/mfd/arizona-core.c
> @@ -259,6 +259,16 @@ static inline void arizona_enable_reset(struct arizona *arizona)
> static void arizona_disable_reset(struct arizona *arizona)
> {
> if (arizona->pdata.reset) {
> + switch (arizona->type) {
> + case WM5110:
> + case WM8280:
> + /* Meet requirements for minimum reset duration */
> + msleep(5);
> + break;
> + default:
> + break;
> + }
> +
> gpio_set_value_cansleep(arizona->pdata.reset, 1);
> msleep(1);
> }
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists