linux-kernel - Re: [PATCH 1/2] ARM: dts: spear13xx: Update SPI dma properties

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Date:   Mon, 14 Mar 2022 13:01:02 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Kuldeep Singh <singh.kuldeep87k@...il.com>
Cc:     soc@...nel.org, Arnd Bergmann <arnd@...db.de>,
        Viresh Kumar <vireshk@...nel.org>,
        Shiraz Hashim <shiraz.linux.kernel@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] ARM: dts: spear13xx: Update SPI dma properties

On 14-03-22, 12:24, Kuldeep Singh wrote:
> Dma-names order matters here.
> As per pl022 binding, dma-names order specify rx,tx and all DTs which
> have tx,rx as order start raising dtbs_chek warning. Thus, need to
> reverse this order. Please note, no functional change in this patch
> apart from just fixing warning.
> 
> Warning:
> 'rx' was expected
> 'tx' was expected

Hmm. I see your point now.

  dma-names:
    description:
      There must be at least one channel named "tx" for transmit and named "rx"
      for receive.
    minItems: 2
    maxItems: 32
    additionalItems: true
    items:
      - const: rx
      - const: tx


I was expecting above to allow adding the items in any order, but
looks like the order is fixed with this.

-- 
viresh