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+]

2 files changed, 0 insertions, 14 deletions

diff --git a/arch/arm/boot/dts/at91sam9n12.dtsi b/arch/arm/boot/dts/at91sam9n12.dtsi
index 80e29c605d4e..4801717566dd 100644
--- a/arch/arm/boot/dts/at91sam9n12.dtsi
+++ b/arch/arm/boot/dts/at91sam9n12.dtsi
@@ -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";
diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index 0c6009080b88..d112c3af8ce2 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -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";