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[RFC,v2,4/4] dt-bindings: add document for rk3229-hdmi

Message ID 1452157511-18891-1-git-send-email-ykk@rock-chips.com (mailing list archive)
State New, archived
Headers show

Commit Message

Yakir Yang Jan. 7, 2016, 9:05 a.m. UTC
Signed-off-by: Yakir Yang <ykk@rock-chips.com>
---
Changes in v2: None

 .../devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt         | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Comments

Rob Herring Jan. 11, 2016, 2:06 a.m. UTC | #1
On Thu, Jan 07, 2016 at 05:05:11PM +0800, Yakir Yang wrote:
> Signed-off-by: Yakir Yang <ykk@rock-chips.com>
> ---
> Changes in v2: None
> 
>  .../devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt         | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt b/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
> index 668091f..1cdc627 100644
> --- a/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
> +++ b/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
> @@ -2,7 +2,7 @@ Rockchip specific extensions to the Synopsys Designware HDMI
>  ================================
>  
>  Required properties:
> -- compatible: "rockchip,rk3288-dw-hdmi";
> +- compatible: "rockchip,rk3288-dw-hdmi", "rockchip,rk3229-dw-hdmi";
>  - reg: Physical base address and length of the controller's registers.
>  - clocks: phandle to hdmi iahb and isfr clocks.
>  - clock-names: should be "iahb" "isfr"
> @@ -15,8 +15,10 @@ Required properties:
>    rk3288 platform
>  
>  Optional properties
> +- reg: Physical base address and length of the external HDMI PHY's registers.

This is already required...

>  - ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
>  - clocks, clock-names: phandle to the HDMI CEC clock, name should be "cec"
> +		       phandle to the external HDMI PHY clock, name should be "extphy"

Does this change apply to rk3288 or just rk3229? If the latter, you 
should make that clear. The driver needs to allow for old dtb's that 
only have 1 clock.

Based on Philipp's feedback, you also need to add a phys property.

Rob
Yakir Yang Jan. 11, 2016, 3:48 a.m. UTC | #2
Hi Rob,

On 01/11/2016 10:06 AM, Rob Herring wrote:
> On Thu, Jan 07, 2016 at 05:05:11PM +0800, Yakir Yang wrote:
>> Signed-off-by: Yakir Yang <ykk@rock-chips.com>
>> ---
>> Changes in v2: None
>>
>>   .../devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt         | 4 +++-
>>   1 file changed, 3 insertions(+), 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt b/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
>> index 668091f..1cdc627 100644
>> --- a/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
>> +++ b/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
>> @@ -2,7 +2,7 @@ Rockchip specific extensions to the Synopsys Designware HDMI
>>   ================================
>>   
>>   Required properties:
>> -- compatible: "rockchip,rk3288-dw-hdmi";
>> +- compatible: "rockchip,rk3288-dw-hdmi", "rockchip,rk3229-dw-hdmi";
>>   - reg: Physical base address and length of the controller's registers.
>>   - clocks: phandle to hdmi iahb and isfr clocks.
>>   - clock-names: should be "iahb" "isfr"
>> @@ -15,8 +15,10 @@ Required properties:
>>     rk3288 platform
>>   
>>   Optional properties
>> +- reg: Physical base address and length of the external HDMI PHY's registers.
> This is already required...
>

The original reg only include the DW HDMI controller registers:
         reg = <0x200a0000 0x20000>;

But for now, I need to pass the external HDMI PHY registers:
         reg = <0x200a0000 0x20000>, <0x12030000 0x10000>;

>>   - ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
>>   - clocks, clock-names: phandle to the HDMI CEC clock, name should be "cec"
>> +		       phandle to the external HDMI PHY clock, name should be "extphy"
> Does this change apply to rk3288 or just rk3229? If the latter, you
> should make that clear. The driver needs to allow for old dtb's that
> only have 1 clock.

It's the latter one, driver have allowed that by judging the device type,
but I should make the document more clear.

> Based on Philipp's feedback, you also need to add a phys property.

Yes, I'm preparing the new patches that create a new separate phy
driver for external HDMI phy, there would be much difference from
this version.

Thanks for your respond,
- Yakir

>
> Rob
>
>
>
diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt b/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
index 668091f..1cdc627 100644
--- a/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
+++ b/Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
@@ -2,7 +2,7 @@  Rockchip specific extensions to the Synopsys Designware HDMI
 ================================
 
 Required properties:
-- compatible: "rockchip,rk3288-dw-hdmi";
+- compatible: "rockchip,rk3288-dw-hdmi", "rockchip,rk3229-dw-hdmi";
 - reg: Physical base address and length of the controller's registers.
 - clocks: phandle to hdmi iahb and isfr clocks.
 - clock-names: should be "iahb" "isfr"
@@ -15,8 +15,10 @@  Required properties:
   rk3288 platform
 
 Optional properties
+- reg: Physical base address and length of the external HDMI PHY's registers.
 - ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
 - clocks, clock-names: phandle to the HDMI CEC clock, name should be "cec"
+		       phandle to the external HDMI PHY clock, name should be "extphy"
 
 Example:
 hdmi: hdmi@ff980000 {