linux-kernel - Re: [RESEND PATCH] ASoC: rsnd: dma: fix SSI9 4/5/6/7 busif dma address

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Date:   23 Oct 2019 09:51:36 +0900
From:   Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:     Eugeniu Rosca <erosca@...adit-jv.com>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, <alsa-devel@...a-project.org>,
        <linux-kernel@...r.kernel.org>,
        Eugeniu Rosca <roscaeugeniu@...il.com>,
        Jiada Wang <jiada_wang@...tor.com>,
        Timo Wischer <twischer@...adit-jv.com>,
        Andrew Gabbasov <andrew_gabbasov@...tor.com>,
        <stable@...r.kernel.org>
Subject: Re: [RESEND PATCH] ASoC: rsnd: dma: fix SSI9 4/5/6/7 busif dma address


Hi

> From: Jiada Wang <jiada_wang@...tor.com>
> 
> Currently each SSI unit's busif dma address is calculated by
> following calculation formula:
> 0xec540000 + 0x1000 * id + busif / 4 * 0xA000 + busif % 4 * 0x400
> 
> But according to R-Car3 HW manual 41.1.4 Register Configuration,
> ssi9 4/5/6/7 busif data register address
> (SSI9_4_BUSIF/SSI9_5_BUSIF/SSI9_6_BUSIF/SSI9_7_BUSIF)
> are out of this rule.
> 
> This patch updates the calculation formula to correct
> ssi9 4/5/6/7 busif data register address.
> 
> Fixes: 5e45a6fab3b9 ("ASoc: rsnd: dma: Calculate dma address with consider of BUSIF")
> Signed-off-by: Jiada Wang <jiada_wang@...tor.com>
> Signed-off-by: Timo Wischer <twischer@...adit-jv.com>
> [erosca: minor improvements in commit description]
> Cc: Andrew Gabbasov <andrew_gabbasov@...tor.com>
> Cc: stable@...r.kernel.org # v4.20+
> Signed-off-by: Eugeniu Rosca <erosca@...adit-jv.com>
> ---

Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>