linux-kernel - Re: [PATCH 1/4] drm/bridge: nwl-dsi: Set PHY mode in nwl_dsi

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Message-ID: <20201215083019.GA11854@bogon.m.sigxcpu.org>
Date:   Tue, 15 Dec 2020 09:30:19 +0100
From:   Guido Günther <guido.gunther@...i.sm>
To:     Liu Ying <victor.liu@....com>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, kishon@...com,
        vkoul@...nel.org, robh+dt@...nel.org, a.hajda@...sung.com,
        narmstrong@...libre.com, Laurent.pinchart@...asonboard.com,
        jonas@...boo.se, jernej.skrabec@...l.net, airlied@...ux.ie,
        daniel@...ll.ch, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        robert.chiras@....com, martin.kepplinger@...i.sm
Subject: Re: [PATCH 1/4] drm/bridge: nwl-dsi: Set PHY mode in nwl_dsi_enable()

Hi,
On Tue, Dec 08, 2020 at 10:04:57AM +0100, Guido Günther wrote:
> Hi,
> On Fri, Dec 04, 2020 at 03:33:41PM +0800, Liu Ying wrote:
> > The Northwest Logic MIPI DSI host controller embedded in i.MX8qxp
> > works with a Mixel MIPI DPHY + LVDS PHY combo to support either
> > a MIPI DSI display or a LVDS display.  So, this patch calls
> > phy_set_mode() from nwl_dsi_enable() to set PHY mode to MIPI DPHY
> > explicitly.

Should i pull this patch in via drm-misc-next or is the whole series
supposed to go via the phy tree?
Cheers,
 -- Guido


> > 
> > Cc: Guido Günther <agx@...xcpu.org>
> > Cc: Robert Chiras <robert.chiras@....com>
> > Cc: Martin Kepplinger <martin.kepplinger@...i.sm>
> > Cc: Andrzej Hajda <a.hajda@...sung.com>
> > Cc: Neil Armstrong <narmstrong@...libre.com>
> > Cc: Laurent Pinchart <Laurent.pinchart@...asonboard.com>
> > Cc: Jonas Karlman <jonas@...boo.se>
> > Cc: Jernej Skrabec <jernej.skrabec@...l.net>
> > Cc: David Airlie <airlied@...ux.ie>
> > Cc: Daniel Vetter <daniel@...ll.ch>
> > Cc: NXP Linux Team <linux-imx@....com>
> > Signed-off-by: Liu Ying <victor.liu@....com>
> > ---
> >  drivers/gpu/drm/bridge/nwl-dsi.c | 6 ++++++
> >  1 file changed, 6 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c
> > index 66b6740..be6bfc5 100644
> > --- a/drivers/gpu/drm/bridge/nwl-dsi.c
> > +++ b/drivers/gpu/drm/bridge/nwl-dsi.c
> > @@ -678,6 +678,12 @@ static int nwl_dsi_enable(struct nwl_dsi *dsi)
> >  		return ret;
> >  	}
> >  
> > +	ret = phy_set_mode(dsi->phy, PHY_MODE_MIPI_DPHY);
> > +	if (ret < 0) {
> > +		DRM_DEV_ERROR(dev, "Failed to set DSI phy mode: %d\n", ret);
> > +		goto uninit_phy;
> > +	}
> > +
> >  	ret = phy_configure(dsi->phy, phy_cfg);
> >  	if (ret < 0) {
> >  		DRM_DEV_ERROR(dev, "Failed to configure DSI phy: %d\n", ret);
> 
> Reviewed-by: Guido Günther <agx@...xcpu.org> 
>  -- Guido
> 
> > -- 
> > 2.7.4
> > 
> 
>