diff mbox

[v2,2/2] arm64: dts: exynos: add OF graph between USB-PHY and MUIC

Message ID 20180515121239.18192-3-a.hajda@samsung.com (mailing list archive)
State Changes Requested
Headers show

Commit Message

a.hajda May 15, 2018, 12:12 p.m. UTC
OF graph describes USB data lanes between USB-PHY and respective MUIC.
Since graph is present and DWC driver can use it to get extcon, obsolete
extcon property can be removed.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---
 .../dts/exynos/exynos5433-tm2-common.dtsi     | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

Comments

Krzysztof Kozlowski May 15, 2018, 12:19 p.m. UTC | #1
On Tue, May 15, 2018 at 2:12 PM, Andrzej Hajda <a.hajda@samsung.com> wrote:
> OF graph describes USB data lanes between USB-PHY and respective MUIC.
> Since graph is present and DWC driver can use it to get extcon, obsolete
> extcon property can be removed.
>
> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
> ---
>  .../dts/exynos/exynos5433-tm2-common.dtsi     | 19 ++++++++++++++++++-
>  1 file changed, 18 insertions(+), 1 deletion(-)

As we discussed for v1 - since this was not split into two, I'll apply
it once first patch hits mainline.

Best regards,
Krzysztof
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Felipe Balbi May 16, 2018, 5:56 a.m. UTC | #2
Krzysztof Kozlowski <krzk@kernel.org> writes:

> On Tue, May 15, 2018 at 2:12 PM, Andrzej Hajda <a.hajda@samsung.com> wrote:
>> OF graph describes USB data lanes between USB-PHY and respective MUIC.
>> Since graph is present and DWC driver can use it to get extcon, obsolete
>> extcon property can be removed.
>>
>> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
>> ---
>>  .../dts/exynos/exynos5433-tm2-common.dtsi     | 19 ++++++++++++++++++-
>>  1 file changed, 18 insertions(+), 1 deletion(-)
>
> As we discussed for v1 - since this was not split into two, I'll apply
> it once first patch hits mainline.

I just took patch 1 to my tree, fyi
Krzysztof Kozlowski June 20, 2018, 6:28 p.m. UTC | #3
On Tue, May 15, 2018 at 02:12:39PM +0200, Andrzej Hajda wrote:
> OF graph describes USB data lanes between USB-PHY and respective MUIC.
> Since graph is present and DWC driver can use it to get extcon, obsolete
> extcon property can be removed.
> 
> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
> ---
>  .../dts/exynos/exynos5433-tm2-common.dtsi     | 19 ++++++++++++++++++-
>  1 file changed, 18 insertions(+), 1 deletion(-)

dtc W=1 now complains with:
===
Warning (graph_child_address):
/soc/hsi2c@14d90000/max77843@66/max77843-muic/ports: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary
===

Do you plan to add more ports soon?

Best regards,
Krzysztof

> diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> index 03453b822093..042e5894a138 100644
> --- a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> @@ -868,6 +868,18 @@
>  					};
>  				};
>  			};
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				port@0 {
> +					reg = <0>;
> +					muic_to_usb: endpoint {
> +						remote-endpoint = <&usb_to_muic>;
> +					};
> +				};
> +			};
>  		};
>  
>  		regulators {
> @@ -1287,12 +1299,17 @@
>  
>  &usbdrd_dwc3 {
>  	dr_mode = "otg";
> -	extcon = <&muic>;
>  };
>  
>  &usbdrd30_phy {
>  	vbus-supply = <&safeout1_reg>;
>  	status = "okay";
> +
> +	port {
> +		usb_to_muic: endpoint {
> +			remote-endpoint = <&muic_to_usb>;
> +		};
> +	};
>  };
>  
>  &xxti {
> -- 
> 2.17.0
> 
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a.hajda June 22, 2018, 10:39 a.m. UTC | #4
On 20.06.2018 20:28, Krzysztof Kozlowski wrote:
> On Tue, May 15, 2018 at 02:12:39PM +0200, Andrzej Hajda wrote:
>> OF graph describes USB data lanes between USB-PHY and respective MUIC.
>> Since graph is present and DWC driver can use it to get extcon, obsolete
>> extcon property can be removed.
>>
>> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
>> ---
>>  .../dts/exynos/exynos5433-tm2-common.dtsi     | 19 ++++++++++++++++++-
>>  1 file changed, 18 insertions(+), 1 deletion(-)
> dtc W=1 now complains with:
> ===
> Warning (graph_child_address):
> /soc/hsi2c@14d90000/max77843@66/max77843-muic/ports: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary
> ===
>
> Do you plan to add more ports soon?

There could be a link between UART and MUIC, it could be beneficial for
the platform - there is no point to feed UART with data when UART output
is muxed-out by MUIC.
So I plan to investigate it but this is not on my short list :)
Alternatively one can create graphs without using it atm.

Regards
Andrzej

>
> Best regards,
> Krzysztof
>
>> diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
>> index 03453b822093..042e5894a138 100644
>> --- a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
>> +++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
>> @@ -868,6 +868,18 @@
>>  					};
>>  				};
>>  			};
>> +
>> +			ports {
>> +				#address-cells = <1>;
>> +				#size-cells = <0>;
>> +
>> +				port@0 {
>> +					reg = <0>;
>> +					muic_to_usb: endpoint {
>> +						remote-endpoint = <&usb_to_muic>;
>> +					};
>> +				};
>> +			};
>>  		};
>>  
>>  		regulators {
>> @@ -1287,12 +1299,17 @@
>>  
>>  &usbdrd_dwc3 {
>>  	dr_mode = "otg";
>> -	extcon = <&muic>;
>>  };
>>  
>>  &usbdrd30_phy {
>>  	vbus-supply = <&safeout1_reg>;
>>  	status = "okay";
>> +
>> +	port {
>> +		usb_to_muic: endpoint {
>> +			remote-endpoint = <&muic_to_usb>;
>> +		};
>> +	};
>>  };
>>  
>>  &xxti {
>> -- 
>> 2.17.0
>>
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>
>

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Krzysztof Kozlowski June 22, 2018, 10:56 a.m. UTC | #5
On 22 June 2018 at 12:39, Andrzej Hajda <a.hajda@samsung.com> wrote:
> On 20.06.2018 20:28, Krzysztof Kozlowski wrote:
>> On Tue, May 15, 2018 at 02:12:39PM +0200, Andrzej Hajda wrote:
>>> OF graph describes USB data lanes between USB-PHY and respective MUIC.
>>> Since graph is present and DWC driver can use it to get extcon, obsolete
>>> extcon property can be removed.
>>>
>>> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
>>> ---
>>>  .../dts/exynos/exynos5433-tm2-common.dtsi     | 19 ++++++++++++++++++-
>>>  1 file changed, 18 insertions(+), 1 deletion(-)
>> dtc W=1 now complains with:
>> ===
>> Warning (graph_child_address):
>> /soc/hsi2c@14d90000/max77843@66/max77843-muic/ports: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary
>> ===
>>
>> Do you plan to add more ports soon?
>
> There could be a link between UART and MUIC, it could be beneficial for
> the platform - there is no point to feed UART with data when UART output
> is muxed-out by MUIC.
> So I plan to investigate it but this is not on my short list :)
> Alternatively one can create graphs without using it atm.

In that case could you remove here the address/size-cells to fix the
warning? I see that code uses -1 in of_graph_get_remote_node() so it
should not depend on the reg number.

Best regards,
Krzysztof
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diff mbox

Patch

diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
index 03453b822093..042e5894a138 100644
--- a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
@@ -868,6 +868,18 @@ 
 					};
 				};
 			};
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					muic_to_usb: endpoint {
+						remote-endpoint = <&usb_to_muic>;
+					};
+				};
+			};
 		};
 
 		regulators {
@@ -1287,12 +1299,17 @@ 
 
 &usbdrd_dwc3 {
 	dr_mode = "otg";
-	extcon = <&muic>;
 };
 
 &usbdrd30_phy {
 	vbus-supply = <&safeout1_reg>;
 	status = "okay";
+
+	port {
+		usb_to_muic: endpoint {
+			remote-endpoint = <&muic_to_usb>;
+		};
+	};
 };
 
 &xxti {