On 10/05/18 15:05, Rob Herring wrote:
> On Thu, May 10, 2018 at 5:51 AM, Sudeep Holla <sudeep.holla@xxxxxxx> wrote:
>>
>>
>> On 09/05/18 22:14, Rob Herring wrote:
>>> On Wed, May 9, 2018 at 11:48 AM, Sudeep Holla <sudeep.holla@xxxxxxx> wrote:
>>>> The latest DTC throws warnings for character '_' in the node names.
>>>>
>>>> Warning (node_name_chars_strict): /sysreg@10000/sys_led: Character '_' not recommended in node name
>>>> Warning (node_name_chars_strict): /sysreg@10000/sys_mci: Character '_' not recommended in node name
>>>> Warning (node_name_chars_strict): /sysreg@10000/sys_flash: Character '_' not recommended in node name
>>>>
>>>> The general recommendation is to use character '-' for all the node names.
>>>> This patch fixes the warnings following the recommendation.
>>>>
>>>> Cc: Liviu Dudau <liviu.dudau@xxxxxxx>
>>>> Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx>
>>>> ---
>>>> arch/arm/boot/dts/vexpress-v2m-rs1.dtsi | 6 +++---
>>>> 1 file changed, 3 insertions(+), 3 deletions(-)
>>>>
>>>> diff --git a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
>>>> index 7b8ff5b3b912..58e73131ecef 100644
>>>> --- a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
>>>> +++ b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
>>>> @@ -77,19 +77,19 @@
>>>> compatible = "arm,vexpress-sysreg";
>>>> reg = <0x010000 0x1000>;
>>>>
>>>> - v2m_led_gpios: sys_led {
>>>> + v2m_led_gpios: sys-led {
>>>
>>> Except this is a gpio-controller so it should have 'gpio' for its node
>>> name. (I have a dtc check written for that, but there are too many
>>> false positives.)
>>>
>>
>> True, sorry I didn't look at it in detail.
>>
>>> But then you have 3 of them and no addressing, so you need to add reg
>>> property (with the register's offset and size) and unit-address.
>>>
>>
>> Indeed. I had a look at the history but couldn't gather much. All I
>> could get is that this is one of those weird mix of all functionality on
>> ARM Ltd platforms which fits no subsystem. Me and Lorenzo has similar
>> issue on TC2 platform. Pawel seem to have plumed this system control
>> registers block into MFD and GPIO long back.
>>
>>> I'm surprised Linus W accepted these a GPIO when they are not really
>>> general purpose, but then lots of things slip in.
>>>
>>
>> I assume all these happened in early days of DT.
>>
>> I will drop this for now. I will take a look if these nodes can be made
>> better to align with standard gpio controller nodes.
>
> Why not just make the changes I suggested? It shouldn't break
> anything. You can add reg property even though the kernel doesn't use
> it.
>
Ah OK. That makes sense. IIRC it used to have some @<offset> value
previously which has some correlation to HW block. I will dig that out.
Sorry I missed that you were suggesting to add reg property.
--
Regards,
Sudeep
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