linux-kernel - Re: [PATCH v3] ARM: at91: add Acme Systems Aria G25 board

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Message-ID: <516FC732.9080109@atmel.com>
Date:	Thu, 18 Apr 2013 12:13:06 +0200
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	<dgilbert@...erlog.com>, <robertcnelson@...il.com>
CC:	<jhovold@...il.com>, <linux-kernel@...r.kernel.org>,
	Ludovic Desroches <ludovic.desroches@...el.com>,
	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	"Sergio Tanzilli" <tanzilli@...esystems.it>
Subject: Re: [PATCH v3] ARM: at91: add Acme Systems Aria G25 board

On 04/18/2013 11:01 AM, Nicolas Ferre :
> On 04/04/2013 07:03 PM, Douglas Gilbert :

[..]

>> The lack of use of uart1 is for my own, private reasons.
>> I think it would be more generally useful to show uart1's
>> definition and disable it as shown in the attached patch
>> fragment.
> 
> Well, if uart1 is available on Aria board, I should enable it! If you do
> not want it on your own design, you must modify the .dts yourself. So I
> plan to have an "okay" status on it (and move the definition itself to
> the generic .dtsi).

Update: I have just checked the ACME website and both UART0 and UART1
pins are expected to be used as GPIOs. So maybe we should mark them as
"disabled":

+                       /*
+                        * UART1 pins are marked as GPIO on Aria
+                        * documentation: change to "okay" if you need
+                        * an additional serial port
+                        */
+                       uart0: serial@...40000 {
+                               status = "disabled";
+                       };
+
+                       uart1: serial@...44000 {
+                               status = "disabled";
+                       };

(uart0 definition moved to at91sam9x5.dtsi)
What do you think?

[..]

Bye,
-- 
Nicolas Ferre
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