[PATCH RFC 04/15] drm/dsi: Do not add DSI devices for the child nodes with input-port property

Liu Ying Ying.Liu at freescale.com
Wed Dec 10 18:52:45 PST 2014

Hi Thierry,

On 12/10/2014 08:21 PM, Thierry Reding wrote:
> On Wed, Dec 10, 2014 at 04:37:17PM +0800, Liu Ying wrote:
>> The MIPI DSI bus driver would try to add a DSI device for a host's every
>> child node which contains the reg property.  Unfortunately, the existing
>> i.MX6Q/SDL MIPI DSI host device tree node's child nodes contain the reg
> There aren't any existing nodes for the DSI host on i.MX. This patch
> series adds support for them.

There are existing nodes for the DSI host node. Please find them in 
arch/arm/boot/dts/imx6qdl.dtsi and arch/arm/boot/dts/imx6q.dts. The DSI 
host node contains two child nodes for i.MX6DL and another two for 
i.MX6Q.  Each child node has a reg property embedded.

>> property, but the child nodes are ports pointing to dedicated CRTCs.
>> So, this patch phases out the child nodes with input-port property before
>> adding DSI devices for them and updates the MIPI DSI bus OF binding
>> documentation.
>> Signed-off-by: Liu Ying <Ying.Liu at freescale.com>
>> ---
>>   Documentation/devicetree/bindings/mipi/dsi/mipi-dsi-bus.txt | 4 ++++
>>   drivers/gpu/drm/drm_mipi_dsi.c                              | 5 +++--
>>   2 files changed, 7 insertions(+), 2 deletions(-)
> Sorry, but NAK. There's no need for this special-case. I'll go into more
> detail in response to patch 09/15.

Thanks for reviewing the patches.

Any idea how to handle the special case?  The existing child nodes for 
the DSI host node do have the reg properties embedded.


Liu Ying

> Thierry

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