linux-kernel - Re: [PATCH 01/12] dt-bindings: bus: ti-sysc: Add support for PRUSS SYSC type

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Date:   Wed, 26 Feb 2020 10:38:36 -0600
From:   Suman Anna <s-anna@...com>
To:     Roger Quadros <rogerq@...com>, Tony Lindgren <tony@...mide.com>
CC:     Tero Kristo <t-kristo@...com>, <linux-omap@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: Re: [PATCH 01/12] dt-bindings: bus: ti-sysc: Add support for PRUSS
 SYSC type

Hi Roger,

On 2/26/20 2:42 AM, Roger Quadros wrote:
> Hi Suman,
> 
> On 25/02/2020 22:46, Suman Anna wrote:
>> From: Roger Quadros <rogerq@...com>
>>
>> The PRUSS module has a SYSCFG which is unique. The SYSCFG
>> has two additional unique fields called STANDBY_INIT and
>> SUB_MWAIT in addition to regular IDLE_MODE and STANDBY_MODE
>> fields. Add the bindings for this new sysc type.
>>
>> Signed-off-by: Roger Quadros <rogerq@...com>
>> Signed-off-by: Suman Anna <s-anna@...com>
>> ---
>>   Documentation/devicetree/bindings/bus/ti-sysc.txt | 1 +
>>   include/dt-bindings/bus/ti-sysc.h                 | 4 ++++
>>   2 files changed, 5 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/bus/ti-sysc.txt
>> b/Documentation/devicetree/bindings/bus/ti-sysc.txt
>> index 233eb8294204..c984143d08d2 100644
>> --- a/Documentation/devicetree/bindings/bus/ti-sysc.txt
>> +++ b/Documentation/devicetree/bindings/bus/ti-sysc.txt
>> @@ -38,6 +38,7 @@ Required standard properties:
>>           "ti,sysc-dra7-mcasp"
>>           "ti,sysc-usb-host-fs"
>>           "ti,sysc-dra7-mcan"
>> +        "ti,sysc-pruss"
>>     - reg        shall have register areas implemented for the
>> interconnect
>>           target module in question such as revision, sysc and syss
>> diff --git a/include/dt-bindings/bus/ti-sysc.h
>> b/include/dt-bindings/bus/ti-sysc.h
> 
> Did you intentionally leave this here? It should be part of 2nd patch?

No, not really, include/bindings are also considered part of bindings.
This patch alone should be enough for you to add the DT nodes.

regards
Suman

> 
>> index babd08a1d226..76b07826ed05 100644
>> --- a/include/dt-bindings/bus/ti-sysc.h
>> +++ b/include/dt-bindings/bus/ti-sysc.h
>> @@ -18,6 +18,10 @@
>>     #define SYSC_DRA7_MCAN_ENAWAKEUP    (1 << 4)
>>   +/* PRUSS sysc found on AM33xx/AM43xx/AM57xx */
>> +#define SYSC_PRUSS_SUB_MWAIT        (1 << 5)
>> +#define SYSC_PRUSS_STANDBY_INIT        (1 << 4)
>> +
>>   /* SYSCONFIG STANDBYMODE/MIDLEMODE/SIDLEMODE supported by hardware */
>>   #define SYSC_IDLE_FORCE            0
>>   #define SYSC_IDLE_NO            1
>>
>