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Re: [PATCH 01/10] serial: mvebu-uart: initial support for Armada-3700 serial port

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Hi Mark,
 
 On mar., févr. 02 2016, Mark Rutland <mark.rutland@arm.com> wrote:

>> diff --git a/Documentation/devicetree/bindings/tty/serial/mvebu-uart.txt b/Documentation/devicetree/bindings/tty/serial/mvebu-uart.txt
>> new file mode 100644
>> index 000000000000..6087defd9f93
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/tty/serial/mvebu-uart.txt
>> @@ -0,0 +1,13 @@
>> +* Marvell UART : Non standard UART used in some of Marvell EBU SoCs (e.g., Armada-3700)
>> +
>> +Required properties:
>> +- compatible: "marvell,armada-3700-uart"
>> +- reg: offset and length of the register set for the device.
>> +- interrupts: device interrupt
>> +
>> +Example:
>> +	serial@12000 {
>> +		compatible = "marvell,armada-3700-uart";
>> +		reg = <0x12000 0x400>;
>> +		interrupts = <43>;
>> +	};
>
> There are no external clock inputs?

Right, even if we don't use it in the driver we should ad it in the
binding because there is an external clock input.

>
>> diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
>> index 87d40a72f6a1..198f6bd56e84 100644
>> --- a/Documentation/kernel-parameters.txt
>> +++ b/Documentation/kernel-parameters.txt
>> @@ -1058,6 +1058,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
>>  			A valid base address must be provided, and the serial
>>  			port must already be setup and configured.
>>  
>> +		mvebu_uart,<addr>
>> +			Start an early, polled-mode console on an some mvebu
>> +			SoC (as the Armada-3700) serial port at the specified
>> +			address. The serial port must already be setup and
>> +			configured. Options are not yet supported.
>> +
>
> Does the the mvebu UART vary between platforms at all?

I am not sure to undersatnd your question.

If you asked about the UART used on the other mvebu SoCs then my answer
is: on all the other mvebu SoC until now third party IPs were used. This
one is the first one dedicated to an mevbu SoC and currently only used
on Armada 3700 but I don't know what are the plan for the future mvebu
SoCs.

Gregory

-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

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[PATCH 00/10] Add support for the Armada 3700 SoC an mvebu ARM64 based Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-02 19:10 +0100
  [PATCH 01/10] serial: mvebu-uart: initial support for Armada-3700 serial port Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-02 19:10 +0100
    Re: [PATCH 01/10] serial: mvebu-uart: initial support for  Armada-3700 serial port Mark Rutland <mark.rutland@arm.com> - 2016-02-02 19:30 +0100
      Re: [PATCH 01/10] serial: mvebu-uart: initial support for  Armada-3700 serial port Mark Rutland <mark.rutland@arm.com> - 2016-02-02 19:30 +0100
    Re: [PATCH 01/10] serial: mvebu-uart: initial support for  Armada-3700 serial port One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> - 2016-02-02 19:30 +0100
      Re: [PATCH 01/10] serial: mvebu-uart: initial support for Armada-3700 serial port Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-03 17:10 +0100
    Re: [PATCH 01/10] serial: mvebu-uart: initial support for  Armada-3700 serial port Mark Rutland <mark.rutland@arm.com> - 2016-02-02 19:40 +0100
      Re: [PATCH 01/10] serial: mvebu-uart: initial support for Armada-3700 serial port Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-03 17:40 +0100
      Re: [PATCH 01/10] serial: mvebu-uart: initial support for Armada-3700 serial port Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-03 18:00 +0100
        Re: [PATCH 01/10] serial: mvebu-uart: initial support for  Armada-3700 serial port Mark Rutland <mark.rutland@arm.com> - 2016-02-03 18:10 +0100
    Re: [PATCH 01/10] serial: mvebu-uart: initial support for Armada-3700 serial port Arnd Bergmann <arnd@arndb.de> - 2016-02-02 22:10 +0100
      Re: [PATCH 01/10] serial: mvebu-uart: initial support for Armada-3700 serial port Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-03 17:50 +0100
    Re: [PATCH 01/10] serial: mvebu-uart: initial support for  Armada-3700 serial port Rob Herring <robh@kernel.org> - 2016-02-02 22:20 +0100
    Re: [PATCH 01/10] serial: mvebu-uart: initial support for Armada-3700  serial port Marcin Wojtas <mw@semihalf.com> - 2016-02-03 09:10 +0100
      Re: [PATCH 01/10] serial: mvebu-uart: initial support for Armada-3700 serial port Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-03 17:50 +0100
  [PATCH 04/10] Documentation: dt-bindings: Add a new compatible for the Armada 3700 Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-02 19:20 +0100
    Re: [PATCH 04/10] Documentation: dt-bindings: Add a new compatible  for the Armada 3700 Rob Herring <robh@kernel.org> - 2016-02-02 22:30 +0100
  [PATCH 08/10] MAINTAINERS: Extend dts entry for ARM64 mvebu files Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-02 19:20 +0100
  [PATCH 07/10] arm64: dts: add the Marvell Armada 3700 family and a development board Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-02 19:20 +0100
    Re: [PATCH 07/10] arm64: dts: add the Marvell Armada 3700 family and  a development board Mark Rutland <mark.rutland@arm.com> - 2016-02-02 19:40 +0100
      Re: [PATCH 07/10] arm64: dts: add the Marvell Armada 3700 family and a development board Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-03 11:50 +0100
    Re: [PATCH 07/10] arm64: dts: add the Marvell Armada 3700 family  and a development board Jisheng Zhang <jszhang@marvell.com> - 2016-02-03 07:50 +0100
  [PATCH 02/10] ata: ahci_mvebu: add support for Armada 3700 variant Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-02 19:20 +0100
  [PATCH 09/10] Documentation: arm: update supported Marvell EBU processors Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-02 19:20 +0100
  [PATCH 10/10] arm64: defconfig: enable Armada 3700 related config Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-02 19:20 +0100
  [PATCH 06/10] devicetree: bindings: add DT binding for the Marvell Armada 3700 SoC family Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-02 19:20 +0100
    Re: [PATCH 06/10] devicetree: bindings: add DT binding for the  Marvell Armada 3700 SoC family Rob Herring <robh@kernel.org> - 2016-02-02 22:30 +0100
      Re: [PATCH 06/10] devicetree: bindings: add DT binding for the Marvell Armada 3700 SoC family Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-03 09:10 +0100
  [PATCH 03/10] arm64: add Armada 3700 architecture entry Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-02 19:20 +0100
    Re: [PATCH 03/10] arm64: add Armada 3700 architecture entry Jisheng Zhang <jszhang@marvell.com> - 2016-02-03 07:30 +0100
      Re: [PATCH 03/10] arm64: add Armada 3700 architecture entry Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-03 09:00 +0100
        Re: [PATCH 03/10] arm64: add Armada 3700 architecture entry Arnd Bergmann <arnd@arndb.de> - 2016-02-03 10:20 +0100
          Re: [PATCH 03/10] arm64: add Armada 3700 architecture entry Gregory CLEMENT <gregory.clement@free-electrons.com> - 2016-02-03 12:20 +0100

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