On 19/06/18 09:19, Tony Lindgren wrote:
> * Tomi Valkeinen <tomi.valkeinen@xxxxxx> [180618 13:26]:
>> Add DSS node to k2g.dtsi.
>>
>> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
>> Cc: devicetree@xxxxxxxxxxxxxxx
>> ---
>> arch/arm/boot/dts/keystone-k2g.dtsi | 21 +++++++++++++++++++++
>> 1 file changed, 21 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/keystone-k2g.dtsi b/arch/arm/boot/dts/keystone-k2g.dtsi
>> index da78c0034427..d761fe7d46e7 100644
>> --- a/arch/arm/boot/dts/keystone-k2g.dtsi
>> +++ b/arch/arm/boot/dts/keystone-k2g.dtsi
>> @@ -609,5 +609,26 @@
>> reg = <0x21010000 0x200>;
>> interrupts = <GIC_SPI 123 IRQ_TYPE_EDGE_RISING>;
>> };
>> +
>> + dss: dss@02540000 {
>> + compatible = "ti,k2g-dss";
>> +
>> + reg = <0x02540000 0x400>,
>> + <0x02550000 0x1000>,
>> + <0x02557000 0x1000>,
>> + <0x0255a800 0x100>,
>> + <0x0255ac00 0x100>;
>> +
>> + reg-names = "cfg", "common", "vid1", "ovr1", "vp1";
>
> Can you please check to make sure these are not multiple
> separate devices?
>
> If they are, flushing posted write to one device will not flush
> anything to the other devices. And that can lead to very hard
> to track down mysterious bugs.
I don't see anything hinting that they would be separate devices, and it
wouldn't really make sense to me either. They're integral parts of the
DISPC. I can see a single port for register access, and a single port
for the pixel data DMA.
Tomi
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