linux-kernel - Re: [PATCH 2/2] ARM: bus: da8xx-mstpri: new driver

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Date:   Mon, 31 Oct 2016 10:40:07 +0100
From:   Bartosz Golaszewski <bgolaszewski@...libre.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Kevin Hilman <khilman@...libre.com>,
        Michael Turquette <mturquette@...libre.com>,
        Sekhar Nori <nsekhar@...com>,
        Frank Rowand <frowand.list@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Peter Ujfalusi <peter.ujfalusi@...com>,
        Russell King <linux@...linux.org.uk>,
        LKML <linux-kernel@...r.kernel.org>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>,
        linux-drm <dri-devel@...ts.freedesktop.org>,
        linux-devicetree <devicetree@...r.kernel.org>,
        Jyri Sarha <jsarha@...com>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        David Airlie <airlied@...ux.ie>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Subject: Re: [PATCH 2/2] ARM: bus: da8xx-mstpri: new driver

2016-10-31 5:30 GMT+01:00 Rob Herring <robh@...nel.org>:
> On Wed, Oct 26, 2016 at 07:35:55PM +0200, Bartosz Golaszewski wrote:
>> Create the driver for the da8xx master peripheral priority
>> configuration and implement support for writing to the three
>> Master Priority registers on da850 SoCs.
>>
>> Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
>> ---
>>  .../devicetree/bindings/bus/ti,da850-mstpri.txt    |  20 ++
>>  drivers/bus/Kconfig                                |   9 +
>>  drivers/bus/Makefile                               |   2 +
>>  drivers/bus/da8xx-mstpri.c                         | 266 +++++++++++++++++++++
>>  4 files changed, 297 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/bus/ti,da850-mstpri.txt
>>  create mode 100644 drivers/bus/da8xx-mstpri.c
>>
>> diff --git a/Documentation/devicetree/bindings/bus/ti,da850-mstpri.txt b/Documentation/devicetree/bindings/bus/ti,da850-mstpri.txt
>> new file mode 100644
>> index 0000000..225af09
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/bus/ti,da850-mstpri.txt
>> @@ -0,0 +1,20 @@
>> +* Device tree bindings for Texas Instruments da8xx master peripheral
>> +  priority driver
>> +
>> +DA8XX SoCs feature a set of registers allowing to change the priority of all
>> +peripherals classified as masters.
>> +
>> +Documentation:
>> +OMAP-L138 (DA850) - http://www.ti.com/lit/ug/spruh82c/spruh82c.pdf
>> +
>> +Required properties:
>> +
>> +- compatible:                "ti,da850-mstpri", "syscon" - for da850 based boards
>
> Drop syscon. Doesn't look like it is needed and the example doesn't
> match.

Hi Rob,

it is needed: syscon_regmap_lookup_by_compatible() fails without it. I
fixed the example instead.

Thanks,
Bartosz Golaszewski