lkml.org 
[lkml]   [2018]   [Jun]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
Date
Acked-by: Anson Huang <anson.huang@nxp.com>

I also saw such issue on i.MX6SLL evk board, and also sent out patch for i.MX6SLL.

Anson Huang
Best Regards!


> -----Original Message-----
> From: Robin Gong
> Sent: Monday, June 25, 2018 8:34 PM
> To: shawnguo@kernel.org; kernel@pengutronix.de; Fabio Estevam
> <fabio.estevam@nxp.com>; robh+dt@kernel.org; mark.rutland@arm.com;
> Anson Huang <anson.huang@nxp.com>
> Cc: linux-arm-kernel@lists.infradead.org; devicetree@vger.kernel.org;
> linux-kernel@vger.kernel.org; dl-linux-imx <linux-imx@nxp.com>
> Subject: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> SW4 is one power rail for LPDDR2 on i.mx6sl-evk, so it should be kept always on.
> But it's disabled after switch disabled interface implemented in pfuze driver
> 'commit 5fe156f1cab4
> ("regulator: pfuze100: add enable/disable for switch")'.Thus, it breaks kernel
> bootup. Add 'regulator-always-on' for SW4.
>
> Signed-off-by: Robin Gong <yibin.gong@nxp.com>
> ---
> arch/arm/boot/dts/imx6sl-evk.dts | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/boot/dts/imx6sl-evk.dts
> b/arch/arm/boot/dts/imx6sl-evk.dts
> index 37e792f..798df66 100644
> --- a/arch/arm/boot/dts/imx6sl-evk.dts
> +++ b/arch/arm/boot/dts/imx6sl-evk.dts
> @@ -199,6 +199,7 @@
> sw4_reg: sw4 {
> regulator-min-microvolt = <800000>;
> regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> };
>
> swbst_reg: swbst {
> --
> 2.7.4

\
 
 \ /
  Last update: 2018-06-25 07:54    [W:0.093 / U:0.420 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site