2015-11-12 14:16:04

by Neil Armstrong

[permalink] [raw]
Subject: Re: [PATCH 1/4] arm: omap2+: add missing HWMOD_NO_IDLEST in 81xx hwmod data

On 10/24/2015 12:09 PM, Neil Armstrong wrote:
> Hi,
>
> 2015-10-24 3:21 GMT+02:00 Tony Lindgren <[email protected]>:
>>
>> Hi,
>>
>> * Neil Armstrong <[email protected]> [151022 02:19]:
>>> Add missing HWMOD_NO_IDLEST hwmod flag for entries no
>>> having omap4 clkctrl values.
>>
>> Have you checked this is the case both in dm814x and dm816x TRM?
>> Also the documentation may not be complete FYI, might be also
>> worth checking the legacy TI kernel tree to be sure.
>>
>> Regards,
>>
>> Tony
>>
>>> Cc: Brian Hutchinson <[email protected]>
>>> Signed-off-by: Neil Armstrong <[email protected]>
>>> ---
>>> arch/arm/mach-omap2/omap_hwmod_81xx_data.c | 3 +++
>>> 1 file changed, 3 insertions(+)
>>>
>>> diff --git a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
>>> index b1288f5..6256052 100644
>>> --- a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
>>> +++ b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
>>> @@ -144,6 +144,7 @@ static struct omap_hwmod dm81xx_l4_ls_hwmod = {
>>> .name = "l4_ls",
>>> .clkdm_name = "alwon_l3s_clkdm",
>>> .class = &l4_hwmod_class,
>>> + .flags = HWMOD_NO_IDLEST,
>>> };
> In DM814x TRM, the CM_ALWON_L3_SLOW_CLKSTCTRL does not have IDLEST field.
> Same in DM816x TRM.
>
>>>
>>> /*
>>> @@ -155,6 +156,7 @@ static struct omap_hwmod dm81xx_l4_hs_hwmod = {
>>> .name = "l4_hs",
>>> .clkdm_name = "alwon_l3_med_clkdm",
>>> .class = &l4_hwmod_class,
>>> + .flags = HWMOD_NO_IDLEST,
>>> };
> In DM814x TRM, the CM_ALWON_L3_MED_CLKSTCTRL does not have IDLEST field.
> Same in DM816x TRM.
>
>>>
>>> /* L3 slow -> L4 ls peripheral interface running at 125MHz */
>>> @@ -850,6 +852,7 @@ static struct omap_hwmod dm816x_emac0_hwmod = {
>>> .name = "emac0",
>>> .clkdm_name = "alwon_ethernet_clkdm",
>>> .class = &dm816x_emac_hwmod_class,
>>> + .flags = HWMOD_NO_IDLEST,
>>> };
> In this particular case, the IDLEST is handled in the MDIO hwmod.
>
>>>
>>> static struct omap_hwmod_ocp_if dm81xx_l4_hs__emac0 = {
>>> --
>>> 1.9.1
>
> I'll check the TI tree to be sure...
>
> Regards,
> Neil
>
Tony,

In TI's tree, there is no L3_MED hwmod but the L3_SLOW hwmod has NO_IDLEST flag.

Is there any other issue about this patchset ?

Neil


2015-11-13 14:42:05

by Tony Lindgren

[permalink] [raw]
Subject: Re: [PATCH 1/4] arm: omap2+: add missing HWMOD_NO_IDLEST in 81xx hwmod data

* Neil Armstrong <[email protected]> [151112 06:16]:
> On 10/24/2015 12:09 PM, Neil Armstrong wrote:
> > Hi,
> >
> > 2015-10-24 3:21 GMT+02:00 Tony Lindgren <[email protected]>:
> >>
> >> Hi,
> >>
> >> * Neil Armstrong <[email protected]> [151022 02:19]:
> >>> Add missing HWMOD_NO_IDLEST hwmod flag for entries no
> >>> having omap4 clkctrl values.
> >>
> >> Have you checked this is the case both in dm814x and dm816x TRM?
> >> Also the documentation may not be complete FYI, might be also
> >> worth checking the legacy TI kernel tree to be sure.
> >>
> >> Regards,
> >>
> >> Tony
> >>
> >>> Cc: Brian Hutchinson <[email protected]>
> >>> Signed-off-by: Neil Armstrong <[email protected]>
> >>> ---
> >>> arch/arm/mach-omap2/omap_hwmod_81xx_data.c | 3 +++
> >>> 1 file changed, 3 insertions(+)
> >>>
> >>> diff --git a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
> >>> index b1288f5..6256052 100644
> >>> --- a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
> >>> +++ b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
> >>> @@ -144,6 +144,7 @@ static struct omap_hwmod dm81xx_l4_ls_hwmod = {
> >>> .name = "l4_ls",
> >>> .clkdm_name = "alwon_l3s_clkdm",
> >>> .class = &l4_hwmod_class,
> >>> + .flags = HWMOD_NO_IDLEST,
> >>> };
> > In DM814x TRM, the CM_ALWON_L3_SLOW_CLKSTCTRL does not have IDLEST field.
> > Same in DM816x TRM.
> >
> >>>
> >>> /*
> >>> @@ -155,6 +156,7 @@ static struct omap_hwmod dm81xx_l4_hs_hwmod = {
> >>> .name = "l4_hs",
> >>> .clkdm_name = "alwon_l3_med_clkdm",
> >>> .class = &l4_hwmod_class,
> >>> + .flags = HWMOD_NO_IDLEST,
> >>> };
> > In DM814x TRM, the CM_ALWON_L3_MED_CLKSTCTRL does not have IDLEST field.
> > Same in DM816x TRM.
> >
> >>>
> >>> /* L3 slow -> L4 ls peripheral interface running at 125MHz */
> >>> @@ -850,6 +852,7 @@ static struct omap_hwmod dm816x_emac0_hwmod = {
> >>> .name = "emac0",
> >>> .clkdm_name = "alwon_ethernet_clkdm",
> >>> .class = &dm816x_emac_hwmod_class,
> >>> + .flags = HWMOD_NO_IDLEST,
> >>> };
> > In this particular case, the IDLEST is handled in the MDIO hwmod.
> >
> >>>
> >>> static struct omap_hwmod_ocp_if dm81xx_l4_hs__emac0 = {
> >>> --
> >>> 1.9.1
> >
> > I'll check the TI tree to be sure...
> >
> > Regards,
> > Neil
> >
> Tony,
>
> In TI's tree, there is no L3_MED hwmod but the L3_SLOW hwmod has NO_IDLEST flag.
>
> Is there any other issue about this patchset ?

Thanks for checking. Well one thing, if this is needed as fix, then a
description of what happens without it would be good to have.

Regards,

Tony

2015-11-13 16:18:38

by Neil Armstrong

[permalink] [raw]
Subject: Re: [PATCH 1/4] arm: omap2+: add missing HWMOD_NO_IDLEST in 81xx hwmod data

On 11/13/2015 03:41 PM, Tony Lindgren wrote:
> * Neil Armstrong <[email protected]> [151112 06:16]:
>> On 10/24/2015 12:09 PM, Neil Armstrong wrote:
>>> Hi,
>>>
>>> 2015-10-24 3:21 GMT+02:00 Tony Lindgren <[email protected]>:
>>>>
>>>> Hi,
>>>>
>>>> * Neil Armstrong <[email protected]> [151022 02:19]:
>>>>> Add missing HWMOD_NO_IDLEST hwmod flag for entries no
>>>>> having omap4 clkctrl values.
>>>>
>>>> Have you checked this is the case both in dm814x and dm816x TRM?
>>>> Also the documentation may not be complete FYI, might be also
>>>> worth checking the legacy TI kernel tree to be sure.
>>>>
>>>> Regards,
>>>>
>>>> Tony
>>>>
>>>>> Cc: Brian Hutchinson <[email protected]>
>>>>> Signed-off-by: Neil Armstrong <[email protected]>
>>>>> ---
>>>>> arch/arm/mach-omap2/omap_hwmod_81xx_data.c | 3 +++
>>>>> 1 file changed, 3 insertions(+)
>>>>>
>>>>> diff --git a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
>>>>> index b1288f5..6256052 100644
>>>>> --- a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
>>>>> +++ b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
>>>>> @@ -144,6 +144,7 @@ static struct omap_hwmod dm81xx_l4_ls_hwmod = {
>>>>> .name = "l4_ls",
>>>>> .clkdm_name = "alwon_l3s_clkdm",
>>>>> .class = &l4_hwmod_class,
>>>>> + .flags = HWMOD_NO_IDLEST,
>>>>> };
>>> In DM814x TRM, the CM_ALWON_L3_SLOW_CLKSTCTRL does not have IDLEST field.
>>> Same in DM816x TRM.
>>>
>>>>>
>>>>> /*
>>>>> @@ -155,6 +156,7 @@ static struct omap_hwmod dm81xx_l4_hs_hwmod = {
>>>>> .name = "l4_hs",
>>>>> .clkdm_name = "alwon_l3_med_clkdm",
>>>>> .class = &l4_hwmod_class,
>>>>> + .flags = HWMOD_NO_IDLEST,
>>>>> };
>>> In DM814x TRM, the CM_ALWON_L3_MED_CLKSTCTRL does not have IDLEST field.
>>> Same in DM816x TRM.
>>>
>>>>>
>>>>> /* L3 slow -> L4 ls peripheral interface running at 125MHz */
>>>>> @@ -850,6 +852,7 @@ static struct omap_hwmod dm816x_emac0_hwmod = {
>>>>> .name = "emac0",
>>>>> .clkdm_name = "alwon_ethernet_clkdm",
>>>>> .class = &dm816x_emac_hwmod_class,
>>>>> + .flags = HWMOD_NO_IDLEST,
>>>>> };
>>> In this particular case, the IDLEST is handled in the MDIO hwmod.
>>>
>>>>>
>>>>> static struct omap_hwmod_ocp_if dm81xx_l4_hs__emac0 = {
>>>>> --
>>>>> 1.9.1
>>>
>>> I'll check the TI tree to be sure...
>>>
>>> Regards,
>>> Neil
>>>
>> Tony,
>>
>> In TI's tree, there is no L3_MED hwmod but the L3_SLOW hwmod has NO_IDLEST flag.
>>
>> Is there any other issue about this patchset ?
>
> Thanks for checking. Well one thing, if this is needed as fix, then a
> description of what happens without it would be good to have.
>
> Regards,
>
> Tony
>
Tony,

I'll send a patchset with the error lines in a few minutes.

Neil