diff mbox

[1/1] arm: dts: am33xx: correcting dt node unit address for usb

Message ID 1377885140-3529-1-git-send-email-mugunthanvnm@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Mugunthan V N Aug. 30, 2013, 5:52 p.m. UTC
DT node's unit address should be its own register offset address to make it a
unique across the system. This patch corrects the incorrect USB entries with
correct register offset for unit address.

Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
---
 arch/arm/boot/dts/am33xx.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Kumar Gala Aug. 30, 2013, 7:10 p.m. UTC | #1
On Aug 30, 2013, at 12:52 PM, Mugunthan V N wrote:

> DT node's unit address should be its own register offset address to make it a
> unique across the system. This patch corrects the incorrect USB entries with
> correct register offset for unit address.
> 
> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> Cc: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
> ---
> arch/arm/boot/dts/am33xx.dtsi | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
> index f9c5da9..e9b6775 100644
> --- a/arch/arm/boot/dts/am33xx.dtsi
> +++ b/arch/arm/boot/dts/am33xx.dtsi
> @@ -346,7 +346,7 @@
> 			ti,hwmods = "usb_otg_hs";
> 			status = "disabled";
> 
> -			ctrl_mod: control@44e10000 {
> +			ctrl_mod: control@44e10620 {
> 				compatible = "ti,am335x-usb-ctrl-module";
> 				reg = <0x44e10620 0x10
> 					0x44e10648 0x4>;
> @@ -449,7 +449,7 @@
> 					"tx14", "tx15";
> 			};
> 
> -			cppi41dma: dma-controller@07402000 {
> +			cppi41dma: dma-controller@47402000 {

Why isn't the unit address 47400000 ?

> 				compatible = "ti,am3359-cppi41";
> 				reg =  <0x47400000 0x1000
> 					0x47402000 0x1000
> -- 
> 1.8.4

- k
Mugunthan V N Aug. 31, 2013, 7:39 a.m. UTC | #2
On Saturday 31 August 2013 12:40 AM, Kumar Gala wrote:
> On Aug 30, 2013, at 12:52 PM, Mugunthan V N wrote:
>
>> > DT node's unit address should be its own register offset address to make it a
>> > unique across the system. This patch corrects the incorrect USB entries with
>> > correct register offset for unit address.
>> > 
>> > Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
>> > Cc: Felipe Balbi <balbi@ti.com>
>> > Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
>> > ---
>> > arch/arm/boot/dts/am33xx.dtsi | 4 ++--
>> > 1 file changed, 2 insertions(+), 2 deletions(-)
>> > 
>> > diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
>> > index f9c5da9..e9b6775 100644
>> > --- a/arch/arm/boot/dts/am33xx.dtsi
>> > +++ b/arch/arm/boot/dts/am33xx.dtsi
>> > @@ -346,7 +346,7 @@
>> > 			ti,hwmods = "usb_otg_hs";
>> > 			status = "disabled";
>> > 
>> > -			ctrl_mod: control@44e10000 {
>> > +			ctrl_mod: control@44e10620 {
>> > 				compatible = "ti,am335x-usb-ctrl-module";
>> > 				reg = <0x44e10620 0x10
>> > 					0x44e10648 0x4>;
>> > @@ -449,7 +449,7 @@
>> > 					"tx14", "tx15";
>> > 			};
>> > 
>> > -			cppi41dma: dma-controller@07402000 {
>> > +			cppi41dma: dma-controller@47402000 {
> Why isn't the unit address 47400000 ?
>
The above address is a shared address between CPPI dma and USB sub
system. It has to be shared because CPPI DMA has to access Glue layer of
the USB sub system for accessing IRQ registers.

So 47400000 is already used in USB SS so if it cannot be used for CPPI
DT node.

Regards
Mugunthan V N
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Sergei Shtylyov Aug. 31, 2013, 5:42 p.m. UTC | #3
Hello.

On 08/30/2013 09:52 PM, Mugunthan V N wrote:

> DT node's unit address should be its own register offset address to make it a
> unique across the system. This patch corrects the incorrect USB entries with
> correct register offset for unit address.

> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> Cc: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
> ---
>   arch/arm/boot/dts/am33xx.dtsi | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)

> diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
> index f9c5da9..e9b6775 100644
> --- a/arch/arm/boot/dts/am33xx.dtsi
> +++ b/arch/arm/boot/dts/am33xx.dtsi
[...]
> @@ -449,7 +449,7 @@
>   					"tx14", "tx15";
>   			};
>
> -			cppi41dma: dma-controller@07402000 {
> +			cppi41dma: dma-controller@47402000 {

    Not @47400000? Look at the first entry in the "reg" prop.

>   				compatible = "ti,am3359-cppi41";
>   				reg =  <0x47400000 0x1000
>   					0x47402000 0x1000

WBR, Sergei

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Mugunthan V N Aug. 31, 2013, 6:29 p.m. UTC | #4
On Saturday 31 August 2013 11:12 PM, Sergei Shtylyov wrote:
> Hello.
>
> On 08/30/2013 09:52 PM, Mugunthan V N wrote:
>
>> DT node's unit address should be its own register offset address to
>> make it a
>> unique across the system. This patch corrects the incorrect USB
>> entries with
>> correct register offset for unit address.
>
>> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
>> Cc: Felipe Balbi <balbi@ti.com>
>> Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
>> ---
>>   arch/arm/boot/dts/am33xx.dtsi | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>
>> diff --git a/arch/arm/boot/dts/am33xx.dtsi
>> b/arch/arm/boot/dts/am33xx.dtsi
>> index f9c5da9..e9b6775 100644
>> --- a/arch/arm/boot/dts/am33xx.dtsi
>> +++ b/arch/arm/boot/dts/am33xx.dtsi
> [...]
>> @@ -449,7 +449,7 @@
>>                       "tx14", "tx15";
>>               };
>>
>> -            cppi41dma: dma-controller@07402000 {
>> +            cppi41dma: dma-controller@47402000 {
>
>    Not @47400000? Look at the first entry in the "reg" prop. 
47400000 is already used in USB SS. See below from am33xx.dtsi file

340                 usb: usb@47400000
{                                             
341                         compatible =
"ti,am33xx-usb";                           
342                         reg = <0x47400000
0x1000>;                              
343                         ranges;

Regards
Mugunthan V N
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diff mbox

Patch

diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index f9c5da9..e9b6775 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -346,7 +346,7 @@ 
 			ti,hwmods = "usb_otg_hs";
 			status = "disabled";
 
-			ctrl_mod: control@44e10000 {
+			ctrl_mod: control@44e10620 {
 				compatible = "ti,am335x-usb-ctrl-module";
 				reg = <0x44e10620 0x10
 					0x44e10648 0x4>;
@@ -449,7 +449,7 @@ 
 					"tx14", "tx15";
 			};
 
-			cppi41dma: dma-controller@07402000 {
+			cppi41dma: dma-controller@47402000 {
 				compatible = "ti,am3359-cppi41";
 				reg =  <0x47400000 0x1000
 					0x47402000 0x1000