Hi,
On Wed, 4 Jul 2018 01:42:54 + Robin Gong wrote:
> On 二, 2018-07-03 at 08:10 -0300, Fabio Estevam wrote:
> > Hi Anson,
> >
> > On Tue, Jul 3, 2018 at 4:44 AM, Anson Huang
> > wrote:
> >
> > >
> > > It is NOT easy to identify which switch is critical or NOT, and
> > > different
Hi,
On Wed, 4 Jul 2018 01:42:54 + Robin Gong wrote:
> On 二, 2018-07-03 at 08:10 -0300, Fabio Estevam wrote:
> > Hi Anson,
> >
> > On Tue, Jul 3, 2018 at 4:44 AM, Anson Huang
> > wrote:
> >
> > >
> > > It is NOT easy to identify which switch is critical or NOT, and
> > > different
On 二, 2018-07-03 at 08:10 -0300, Fabio Estevam wrote:
> Hi Anson,
>
> On Tue, Jul 3, 2018 at 4:44 AM, Anson Huang
> wrote:
>
> >
> > It is NOT easy to identify which switch is critical or NOT, and
> > different platforms
> > have different board design, it will introduce many platform
> >
On 二, 2018-07-03 at 08:10 -0300, Fabio Estevam wrote:
> Hi Anson,
>
> On Tue, Jul 3, 2018 at 4:44 AM, Anson Huang
> wrote:
>
> >
> > It is NOT easy to identify which switch is critical or NOT, and
> > different platforms
> > have different board design, it will introduce many platform
> >
Hi Anson,
On Tue, Jul 3, 2018 at 4:44 AM, Anson Huang wrote:
> It is NOT easy to identify which switch is critical or NOT, and different
> platforms
> have different board design, it will introduce many platform specified code,
> so I think
> just revert the pfuze100 switch enable/disable
Hi Anson,
On Tue, Jul 3, 2018 at 4:44 AM, Anson Huang wrote:
> It is NOT easy to identify which switch is critical or NOT, and different
> platforms
> have different board design, it will introduce many platform specified code,
> so I think
> just revert the pfuze100 switch enable/disable
ernel@vger.kernel.org; robh...@kernel.org; dl-linux-imx
> ; ker...@pengutronix.de; Fabio Estevam
> ; linux-arm-ker...@lists.infradead.org
> Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> On Mon, Jul 02, 2018 at 02:12:52AM +, Robin Gong wrote:
> > But in fac
ernel@vger.kernel.org; robh...@kernel.org; dl-linux-imx
> ; ker...@pengutronix.de; Fabio Estevam
> ; linux-arm-ker...@lists.infradead.org
> Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> On Mon, Jul 02, 2018 at 02:12:52AM +, Robin Gong wrote:
> > But in fac
On Mon, Jul 02, 2018 at 02:12:52AM +, Robin Gong wrote:
> But in fact, the original dts is not correct without 'regulator-always-
> on'since SW4 is the critical DDR power rail, although, it's kept on in
> the previous kernel by no switches enable/disable interfaces provided
> in pfuze driver.
On Mon, Jul 02, 2018 at 02:12:52AM +, Robin Gong wrote:
> But in fact, the original dts is not correct without 'regulator-always-
> on'since SW4 is the critical DDR power rail, although, it's kept on in
> the previous kernel by no switches enable/disable interfaces provided
> in pfuze driver.
Hi Robin,
On Sun, Jul 1, 2018 at 11:12 PM, Robin Gong wrote:
> But in fact, the original dts is not correct without 'regulator-always-
> on'since SW4 is the critical DDR power rail, although, it's kept on in
> the previous kernel by no switches enable/disable interfaces provided
> in pfuze
Hi Robin,
On Sun, Jul 1, 2018 at 11:12 PM, Robin Gong wrote:
> But in fact, the original dts is not correct without 'regulator-always-
> on'since SW4 is the critical DDR power rail, although, it's kept on in
> the previous kernel by no switches enable/disable interfaces provided
> in pfuze
On 日, 2018-07-01 at 22:17 -0300, Fabio Estevam wrote:
> On Sun, Jul 1, 2018 at 10:09 PM, Anson Huang
> wrote:
>
> >
> > On some new i.MX platforms, PFuze switches are used for supplying
> > GPU/VPU
> > or other non-critical modules only, these switches need to be
> > turned off by
> > runtime
On 日, 2018-07-01 at 22:17 -0300, Fabio Estevam wrote:
> On Sun, Jul 1, 2018 at 10:09 PM, Anson Huang
> wrote:
>
> >
> > On some new i.MX platforms, PFuze switches are used for supplying
> > GPU/VPU
> > or other non-critical modules only, these switches need to be
> > turned off by
> > runtime
> linux-kernel ; Rob Herring
> ; dl-linux-imx ; Sascha Hauer
> ; Fabio Estevam ;
> moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE
>
> Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> On Sun, Jul 1, 2018 at 10:09 PM, Anson Huang
> wrote:
&
> linux-kernel ; Rob Herring
> ; dl-linux-imx ; Sascha Hauer
> ; Fabio Estevam ;
> moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE
>
> Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> On Sun, Jul 1, 2018 at 10:09 PM, Anson Huang
> wrote:
&
On Sun, Jul 1, 2018 at 10:09 PM, Anson Huang wrote:
> On some new i.MX platforms, PFuze switches are used for supplying GPU/VPU
> or other non-critical modules only, these switches need to be turned off by
> runtime PM to avoid very high power leakage, like on mScale850D.
Ok, in this case I
On Sun, Jul 1, 2018 at 10:09 PM, Anson Huang wrote:
> On some new i.MX platforms, PFuze switches are used for supplying GPU/VPU
> or other non-critical modules only, these switches need to be turned off by
> runtime PM to avoid very high power leakage, like on mScale850D.
Ok, in this case I
> linux-kernel ; Rob Herring
> ; dl-linux-imx ; Sascha Hauer
> ; Fabio Estevam ;
> moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE
>
> Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> On Sun, Jul 1, 2018 at 10:03 PM, Anson Huang
> wrot
> linux-kernel ; Rob Herring
> ; dl-linux-imx ; Sascha Hauer
> ; Fabio Estevam ;
> moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE
>
> Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> On Sun, Jul 1, 2018 at 10:03 PM, Anson Huang
> wrot
On Sun, Jul 1, 2018 at 10:03 PM, Anson Huang wrote:
> So that mean such kind of kernel patch will never be into kernel? Even if it
> is a
> necessary patch for fixing some other issues? I just wonder how this case
> being
> handled.
What is the issue that 5fe156f1cab4f fixes? It is not clear
On Sun, Jul 1, 2018 at 10:03 PM, Anson Huang wrote:
> So that mean such kind of kernel patch will never be into kernel? Even if it
> is a
> necessary patch for fixing some other issues? I just wonder how this case
> being
> handled.
What is the issue that 5fe156f1cab4f fixes? It is not clear
> linux-kernel ; Rob Herring
> ; dl-linux-imx ; Sascha Hauer
> ; Fabio Estevam ;
> moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE
>
> Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> Hi Anson,
>
> On Sun, Jul 1, 2018 at 9:57 PM, Anson H
> linux-kernel ; Rob Herring
> ; dl-linux-imx ; Sascha Hauer
> ; Fabio Estevam ;
> moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE
>
> Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> Hi Anson,
>
> On Sun, Jul 1, 2018 at 9:57 PM, Anson H
Hi Anson,
On Sun, Jul 1, 2018 at 9:57 PM, Anson Huang wrote:
> Just want to know how to handle such case? The kernel patch will never
> be applied or is there any way to make kernel patch and dtb patch applied
> together to avoid any breakage?
We always want to avoid breaking a working dtb
Hi Anson,
On Sun, Jul 1, 2018 at 9:57 PM, Anson Huang wrote:
> Just want to know how to handle such case? The kernel patch will never
> be applied or is there any way to make kernel patch and dtb patch applied
> together to avoid any breakage?
We always want to avoid breaking a working dtb
EE BINDINGS ;
> linux-kernel ; Rob Herring
> ; dl-linux-imx ; Sascha Hauer
> ; Fabio Estevam ;
> moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE
>
> Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> Hi Anson,
>
> On Sun, Jul 1, 2018 at 9:53
EE BINDINGS ;
> linux-kernel ; Rob Herring
> ; dl-linux-imx ; Sascha Hauer
> ; Fabio Estevam ;
> moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE
>
> Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> Hi Anson,
>
> On Sun, Jul 1, 2018 at 9:53
Hi Anson,
On Sun, Jul 1, 2018 at 9:53 PM, Anson Huang wrote:
> Yes, I think we can revert it to avoid breakage. Didn't notice that some
> i.MX platform do NOT have those critical switches always-on.
Ok, thanks for confirming.
I will send a revert patch then.
Thanks
Hi Anson,
On Sun, Jul 1, 2018 at 9:53 PM, Anson Huang wrote:
> Yes, I think we can revert it to avoid breakage. Didn't notice that some
> i.MX platform do NOT have those critical switches always-on.
Ok, thanks for confirming.
I will send a revert patch then.
Thanks
S ; linux-kernel
> ; Rob Herring ;
> dl-linux-imx ; Sascha Hauer ;
> Fabio Estevam ; moderated list:ARM/FREESCALE
> IMX / MXC ARM ARCHITECTURE
> Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> On Sun, Jul 1, 2018 at 6:34 AM, Shawn Guo wrote:
> > O
S ; linux-kernel
> ; Rob Herring ;
> dl-linux-imx ; Sascha Hauer ;
> Fabio Estevam ; moderated list:ARM/FREESCALE
> IMX / MXC ARM ARCHITECTURE
> Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on
>
> On Sun, Jul 1, 2018 at 6:34 AM, Shawn Guo wrote:
> > O
On Sun, Jul 1, 2018 at 6:34 AM, Shawn Guo wrote:
> 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
On Sun, Jul 1, 2018 at 6:34 AM, Shawn Guo wrote:
> 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
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
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
Acked-by: Anson Huang
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: shawn...@kernel.org; ker...@pengutronix.de; Fabio Estevam
> ;
Acked-by: Anson Huang
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: shawn...@kernel.org; ker...@pengutronix.de; Fabio Estevam
> ;
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