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ARM: at91/DT: remove atmel,use-dma-* from 9x5 and 9n12 USART nodes 

Fix the use of USART on both at91sam9x5 and at91sam9n12. In DTS, the
atmel,use-dma-[rx|tx] property is present but a DMA channel cannot be used.
Indeed the connexion between the DMA engine and the slave is not implemented
yet in Device Tree.
Note however that this property is also used for PDC (private DMA) on older
SoCs. This is why the driver alone cannot determine the validity of this
property.

Reported-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: stable <stable@vger.kernel.org> [3.8+]
This commit is contained in:
Nicolas Ferre 2013-01-30 15:32:26 +01:00
parent 7d4cfece23
commit c3f0f282d9
2 changed files with 0 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/arm/boot/dts/at91sam9n12.dtsi
View File

@ -324,8 +324,6 @@
compatible = "atmel,at91sam9260-usart";
reg = <0xf801c000 0x4000>;
interrupts = <5 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usart0>;
status = "disabled";
@ -335,8 +333,6 @@
compatible = "atmel,at91sam9260-usart";
reg = <0xf8020000 0x4000>;
interrupts = <6 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usart1>;
status = "disabled";
@ -346,8 +342,6 @@
compatible = "atmel,at91sam9260-usart";
reg = <0xf8024000 0x4000>;
interrupts = <7 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usart2>;
status = "disabled";
@ -357,8 +351,6 @@
compatible = "atmel,at91sam9260-usart";
reg = <0xf8028000 0x4000>;
interrupts = <8 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usart3>;
status = "disabled";

6
arch/arm/boot/dts/at91sam9x5.dtsi
View File

@ -402,8 +402,6 @@
compatible = "atmel,at91sam9260-usart";
reg = <0xf801c000 0x200>;
interrupts = <5 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usart0>;
status = "disabled";
@ -413,8 +411,6 @@
compatible = "atmel,at91sam9260-usart";
reg = <0xf8020000 0x200>;
interrupts = <6 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usart1>;
status = "disabled";
@ -424,8 +420,6 @@
compatible = "atmel,at91sam9260-usart";
reg = <0xf8024000 0x200>;
interrupts = <7 4 5>;
atmel,use-dma-rx;
atmel,use-dma-tx;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usart2>;
status = "disabled";