linux-kernel - Re: [PATCH v2 3/7] dts: sun8i-h3: add i2c0/i2c1 SoC peripherals

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Date:   Thu, 1 Sep 2016 08:34:10 +0200
From:   Jorik Jonker <jorik@...pendief.biz>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/7] dts: sun8i-h3: add i2c0/i2c1 SoC peripherals

Hi,

(trying again in plaintext, sorry for the HTML spam...)

A bit tricky to reply to two mails in one, as I think my reply relates
to both, but here it goes.

On 1 September 2016 at 04:42, Chen-Yu Tsai <wens@...e.org> wrote:
> On Thu, Sep 1, 2016 at 3:30 AM,  <jorik@...pendief.biz> wrote:
>> From: Jorik Jonker <jorik@...pendief.biz>
>>
>> This enables the i2c0/i2c1 peripherals of the SoC. There is actually a third
>> controller, but I do not have a board on hands on which i2c2 is exposed in such
>> a way that I can verify that it works.
>
> If they are listed in the manual, and the interrupts, clocks, resets, pins
> all exist, that is good enough for me.

That sounds sensible, I will do that in v3.

> These pinmuxes are the only ones possible for each peripheral.
> Please drop the _a suffix and the @0 address for both of them.

Agreed. But: I think the same goes for UARTs 0-3, of which 0-1 have a pinmux
following the _a / @0 syntax in current kernel. There are not really options
here, except leaving out RTS/CTS on uarts1-3, which one could do in a
board-specific pinmux.

Moreover, I could put all the pinmux-peripheral associations for H3 in the DTSI,
removing them from the DTS files (including already existing), as the
associations themselves are not really board specific, right?

Best,
Jorik