From: shawnguo@kernel.org (Shawn Guo)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
Date: Sun, 1 Jul 2018 17:34:04 +0800 [thread overview]
Message-ID: <20180701093402.GN4348@dragon> (raw)
In-Reply-To: <1529930051-14122-1-git-send-email-yibin.gong@nxp.com>
On Mon, Jun 25, 2018 at 08:34:11PM +0800, Robin Gong wrote:
> 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>
Does that mean boards with existing DTB installed will stop working with
new kernel? That's bad, and the kernel commit should probably be
reverted.
Shawn
> ---
> 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
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2018-07-01 9:34 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-25 12:34 [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on Robin Gong
2018-06-25 5:53 ` Anson Huang
2018-07-01 9:34 ` Shawn Guo [this message]
2018-07-01 23:32 ` Fabio Estevam
2018-07-02 0:53 ` Anson Huang
2018-07-02 0:54 ` Fabio Estevam
2018-07-02 0:57 ` Anson Huang
2018-07-02 1:00 ` Fabio Estevam
2018-07-02 1:03 ` Anson Huang
2018-07-02 1:05 ` Fabio Estevam
2018-07-02 1:09 ` Anson Huang
2018-07-02 1:17 ` Fabio Estevam
2018-07-02 1:19 ` Anson Huang
2018-07-02 2:12 ` Robin Gong
2018-07-02 23:14 ` Fabio Estevam
2018-07-03 5:38 ` Shawn Guo
2018-07-03 7:44 ` Anson Huang
2018-07-03 11:10 ` Fabio Estevam
2018-07-04 1:42 ` Robin Gong
2018-07-04 6:56 ` Lothar Waßmann
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