linux-kernel - Re: [PATCH 1/3] drm/bridge: sii902x: fix missing reference to mclk clock

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Date:   Fri, 5 Jul 2019 12:24:02 +0000
From:   Philippe CORNU <philippe.cornu@...com>
To:     Olivier MOYSAN <olivier.moysan@...com>,
        "a.hajda@...sung.com" <a.hajda@...sung.com>,
        "narmstrong@...libre.com" <narmstrong@...libre.com>,
        "Laurent.pinchart@...asonboard.com" 
        <Laurent.pinchart@...asonboard.com>,
        "jonas@...boo.se" <jonas@...boo.se>,
        "jernej.skrabec@...l.net" <jernej.skrabec@...l.net>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        "daniel@...ll.ch" <daniel@...ll.ch>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Benjamin GAIGNARD <benjamin.gaignard@...com>,
        Alexandre TORGUE <alexandre.torgue@...com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-stm32@...md-mailman.stormreply.com" 
        <linux-stm32@...md-mailman.stormreply.com>,
        "jsarha@...com" <jsarha@...com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH 1/3] drm/bridge: sii902x: fix missing reference to mclk
 clock

Hi Olivier,
and many thanks for your patch.
I do not see how audio could work without your patch, so:
Reviewed-by: Philippe Cornu <philippe.cornu@...com>
Philippe :-)

On 7/2/19 5:47 PM, Olivier Moysan wrote:
> Add devm_clk_get call to retrieve reference to master clock.
> 
> Fixes: ff5781634c41 ("drm/bridge: sii902x: Implement HDMI audio support")
> 
> Signed-off-by: Olivier Moysan <olivier.moysan@...com>
> ---
>   drivers/gpu/drm/bridge/sii902x.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
> index dd7aa466b280..36acc256e67e 100644
> --- a/drivers/gpu/drm/bridge/sii902x.c
> +++ b/drivers/gpu/drm/bridge/sii902x.c
> @@ -750,6 +750,7 @@ static int sii902x_audio_codec_init(struct sii902x *sii902x,
>   		sii902x->audio.i2s_fifo_sequence[i] |= audio_fifo_id[i] |
>   			i2s_lane_id[lanes[i]] |	SII902X_TPI_I2S_FIFO_ENABLE;
>   
> +	sii902x->audio.mclk = devm_clk_get(dev, "mclk");
>   	if (IS_ERR(sii902x->audio.mclk)) {
>   		dev_err(dev, "%s: No clock (audio mclk) found: %ld\n",
>   			__func__, PTR_ERR(sii902x->audio.mclk));
>