linux-kernel - Re: [PATCH] arm64: dts: ls1028a: put SAIs into async mode

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Message-ID: <20191211092052.GX15858@dragon>
Date:   Wed, 11 Dec 2019 17:20:53 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Michael Walle <michael@...le.cc>
Cc:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Li Yang <leoyang.li@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH] arm64: dts: ls1028a: put SAIs into async mode

On Fri, Nov 29, 2019 at 10:09:37PM +0100, Michael Walle wrote:
> The LS1028A SoC has only unidirectional SAIs. Therefore, it doesn't make
> sense to have the RX and TX part synchronous. Even worse, the RX part
> wont work out of the box because by default it is configured as
> synchronous to the TX part. And as said before, the pinmux of the SoC
> can only be configured to route either the RX or the TX signals to the
> SAI but never both at the same time. Thus configure the asynchronous
> mode by default.
> 
> Signed-off-by: Michael Walle <michael@...le.cc>

Applied, thanks.