linux-kernel - Re: [PATCH 11/13] arm: dts: dra7: add DMA properties for UART

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Message-ID: <20141104170233.GB24112@csclub.uwaterloo.ca>
Date:	Tue, 4 Nov 2014 12:02:33 -0500
From:	"Lennart Sorensen" <lsorense@...lub.uwaterloo.ca>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	tony@...mide.com, balbi@...com, gregkh@...uxfoundation.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH 11/13] arm: dts: dra7: add DMA properties for UART

On Mon, Sep 29, 2014 at 08:06:47PM +0200, Sebastian Andrzej Siewior wrote:
> Cc: devicetree@...r.kernel.org
> Reviewed-by: Tony Lindgren <tony@...mide.com>
> Tested-by: Tony Lindgren <tony@...mide.com>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
> ---
>  arch/arm/boot/dts/dra7.dtsi | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
> index d678152db4cb..f273e3811f75 100644
> --- a/arch/arm/boot/dts/dra7.dtsi
> +++ b/arch/arm/boot/dts/dra7.dtsi
> @@ -332,6 +332,8 @@
>  			ti,hwmods = "uart1";
>  			clock-frequency = <48000000>;
>  			status = "disabled";
> +			dmas = <&sdma 49>, <&sdma 50>;
> +			dma-names = "tx", "rx";
>  		};
>  
>  		uart2: serial@...6c000 {
> @@ -341,6 +343,8 @@
>  			ti,hwmods = "uart2";
>  			clock-frequency = <48000000>;
>  			status = "disabled";
> +			dmas = <&sdma 51>, <&sdma 52>;
> +			dma-names = "tx", "rx";
>  		};
>  
>  		uart3: serial@...20000 {
> @@ -350,6 +354,8 @@
>  			ti,hwmods = "uart3";
>  			clock-frequency = <48000000>;
>  			status = "disabled";
> +			dmas = <&sdma 53>, <&sdma 54>;
> +			dma-names = "tx", "rx";
>  		};
>  
>  		uart4: serial@...6e000 {
> @@ -359,6 +365,8 @@
>  			ti,hwmods = "uart4";
>  			clock-frequency = <48000000>;
>                          status = "disabled";
> +			dmas = <&sdma 55>, <&sdma 56>;
> +			dma-names = "tx", "rx";
>  		};
>  
>  		uart5: serial@...66000 {
> @@ -368,6 +376,8 @@
>  			ti,hwmods = "uart5";
>  			clock-frequency = <48000000>;
>  			status = "disabled";
> +			dmas = <&sdma 63>, <&sdma 64>;
> +			dma-names = "tx", "rx";
>  		};
>  
>  		uart6: serial@...68000 {
> @@ -377,6 +387,8 @@
>  			ti,hwmods = "uart6";
>  			clock-frequency = <48000000>;
>  			status = "disabled";
> +			dmas = <&sdma 79>, <&sdma 80>;
> +			dma-names = "tx", "rx";
>  		};
>  
>  		uart7: serial@...20000 {

According to the manual the DMA channels for UART7 to 10 are:

uart7:  144 145
uart8:  146 147
uart9:  148 149
uart10: 150 151

Might as well add those too.  We have uart 7 and 8 in use on our board
so I am about to go test it.

-- 
Len Sorensen
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