| Message ID | 1529648932-4832-1-git-send-email-Anson.Huang@nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Anson, On Fri, Jun 22, 2018 at 3:28 AM, Anson Huang <Anson.Huang@nxp.com> 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 SW4 being turned > off: > > [ 1.693613] cfg80211: failed to load regulatory.db > [ 1.700063] SW4: disabling > [ 1.703973] SWBST: disabling It would be nice to mention in the commit log what was the patch that caused the breakage, just like Robin did for imx6sl-evk. Thanks,
Hi, Fabio Anson Huang Best Regards! > -----Original Message----- > From: Fabio Estevam [mailto:festevam@gmail.com] > Sent: Monday, June 25, 2018 8:23 PM > To: Anson Huang <anson.huang@nxp.com> > Cc: Shawn Guo <shawnguo@kernel.org>; Sascha Hauer > <s.hauer@pengutronix.de>; Sascha Hauer <kernel@pengutronix.de>; Fabio > Estevam <fabio.estevam@nxp.com>; Rob Herring <robh+dt@kernel.org>; > Mark Rutland <mark.rutland@arm.com>; open list:OPEN FIRMWARE AND > FLATTENED DEVICE TREE BINDINGS <devicetree@vger.kernel.org>; > dl-linux-imx <linux-imx@nxp.com>; moderated list:ARM/FREESCALE IMX / MXC > ARM ARCHITECTURE <linux-arm-kernel@lists.infradead.org>; linux-kernel > <linux-kernel@vger.kernel.org> > Subject: Re: [PATCH] ARM: dts: imx6sll-evk: make pfuze100 sw4 always on > > Hi Anson, > > On Fri, Jun 22, 2018 at 3:28 AM, Anson Huang <Anson.Huang@nxp.com> > 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 SW4 > > being turned > > off: > > > > [ 1.693613] cfg80211: failed to load regulatory.db > > [ 1.700063] SW4: disabling > > [ 1.703973] SWBST: disabling > > It would be nice to mention in the commit log what was the patch that caused > the breakage, just like Robin did for imx6sl-evk. > > Thanks, Done, already sent out V2 patch, please review it, thanks. Anson.
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 {
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 SW4 being turned off: [ 1.693613] cfg80211: failed to load regulatory.db [ 1.700063] SW4: disabling [ 1.703973] SWBST: disabling Signed-off-by: Anson Huang <Anson.Huang@nxp.com> --- arch/arm/boot/dts/imx6sll-evk.dts | 1 + 1 file changed, 1 insertion(+)