On 7/24/19 1:31 AM, Tony Lindgren wrote:
> * Keerthy <j-keerthy@xxxxxx> [190724 05:50]:
>>
>> On 24/07/19 12:33 AM, Suman Anna wrote:
>>> + Jyri
>>>
>>> On 7/23/19 6:28 AM, Tony Lindgren wrote:
>>>> We currently get a warning for lcdc because of a difference
>>>> with dts provided configuration compared to the legacy platform
>>>> data. This is because lcdc has SYSC_HAS_MIDLEMODE configured in
>>>> the platform data without configuring the modes.
>>>
>>> Hi Tony,
>>> While I understand that you are trying to match the DT data with the
>>> existing legacy data, do you know if there was a reason why this was
>>> omitted in the first place? Should we be really adding the MSTANDBY_
>>> flags and fix up the DTS node accordingly? I tried looking through the
>>> git log, and the initial commit itself didn't add the MSTANDBY_ flags
>>> but used the SYSC_HAS_MIDLEMODE.
>
> Yes the goal is to get rid of all errors and warnings in dmesg output
> so we can spot the real issues.
>
>>> Jyri,
>>> Do you know the history?
>>
>> Tony/Suman,
>>
>> This patch breaks DS0 on am3.
>
> OK thanks for testing. Let's drop this for now, sounds like there is
> some midlemode configuration happening even with no flags set.
You were dropping the ti,sysc-midle property in patch 8, is that still
ok without this patch?
>
> Probably the right fix is to configure the usable midlemodes instead
> both for platform data and dts data and then drop the platform data.
Yeah, that's probably better and more accurate unless we actually have
some h/w issues that require them to be dropped.
regards
Suman
>
> Regards,
>
> Tony
>
>
>
>>>> Let's fix the warning by removing SYSC_HAS_MIDLEMODE. Note that
>>>> the am335x TRM lists SYSC_HAS_MIDLEMODE, but it is unused.
>>>
>>>
>>>
>>>>
>>>> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
>>>> ---
>>>> arch/arm/mach-omap2/omap_hwmod_33xx_data.c | 2 +-
>>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
>>>> --- a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
>>>> +++ b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
>>>> @@ -231,7 +231,7 @@ static struct omap_hwmod am33xx_control_hwmod = {
>>>> static struct omap_hwmod_class_sysconfig lcdc_sysc = {
>>>> .rev_offs = 0x0,
>>>> .sysc_offs = 0x54,
>>>> - .sysc_flags = (SYSC_HAS_SIDLEMODE | SYSC_HAS_MIDLEMODE),
>>>> + .sysc_flags = SYSC_HAS_SIDLEMODE,
>>>> .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
>>>> .sysc_fields = &omap_hwmod_sysc_type2,
>>>> };
>>>>
>>>
