On Wed, Jun 27, 2018 at 09:25:25AM +0800, Anson Huang wrote:
> On i.MX6SLL EVK board, PFuze100's SW4 is supplying
> LPDDR3, it needs to be always on. This patch fixes
> Linux kernel boot up hang caused by commit 5fe156f1cab4
> ("regulator: pfuze100: add enable/disable for switch"),
> because SW4 is turned off unexpectedly:
>
> [ 1.693613] cfg80211: failed to load regulatory.db
> [ 1.700063] SW4: disabling
> [ 1.703973] SWBST: disabling
>
> Fixes: 5fe156f1cab4 ("regulator: pfuze100: add enable/disable for switch")
> Signed-off-by: Anson Huang <[email protected]>
> Reviewed-by: Fabio Estevam <[email protected]>
Just want to understand if we agree to break the existing DTB with v4.18
kernel?
Shawn
> ---
> changes since V2:
> improve the way of referencing commit, and add fix tag.
> arch/arm/boot/dts/imx6sll-evk.dts | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/boot/dts/imx6sll-evk.dts
> b/arch/arm/boot/dts/imx6sll-evk.dts
> index 4684ac4..2217c40 100644
> --- a/arch/arm/boot/dts/imx6sll-evk.dts
> +++ b/arch/arm/boot/dts/imx6sll-evk.dts
> @@ -142,6 +142,7 @@
> sw4_reg: sw4 {
> regulator-min-microvolt = <800000>;
> regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> };
>
> swbst_reg: swbst {
> --
> 2.7.4
>
>
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