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Date:   Tue, 8 Dec 2020 10:04:57 +0100
From:   Guido =?iso-8859-1?Q?G=FCnther?= <guido.gunther@puri.sm>
To:     Liu Ying <victor.liu@nxp.com>
Cc:     linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
        dri-devel@lists.freedesktop.org,
        linux-arm-kernel@lists.infradead.org, kishon@ti.com,
        vkoul@kernel.org, robh+dt@kernel.org, a.hajda@samsung.com,
        narmstrong@baylibre.com, Laurent.pinchart@ideasonboard.com,
        jonas@kwiboo.se, jernej.skrabec@siol.net, airlied@linux.ie,
        daniel@ffwll.ch, shawnguo@kernel.org, s.hauer@pengutronix.de,
        kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com,
        robert.chiras@nxp.com, martin.kepplinger@puri.sm
Subject: Re: [PATCH 1/4] drm/bridge: nwl-dsi: Set PHY mode in nwl_dsi_enable()
Message-ID: <20201208090457.GB20575@bogon.m.sigxcpu.org>
References: <1607067224-15616-1-git-send-email-victor.liu@nxp.com>
 <1607067224-15616-2-git-send-email-victor.liu@nxp.com>
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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.
> 
> Cc: Guido G?nther <agx@sigxcpu.org>
> Cc: Robert Chiras <robert.chiras@nxp.com>
> Cc: Martin Kepplinger <martin.kepplinger@puri.sm>
> Cc: Andrzej Hajda <a.hajda@samsung.com>
> Cc: Neil Armstrong <narmstrong@baylibre.com>
> Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
> Cc: Jonas Karlman <jonas@kwiboo.se>
> Cc: Jernej Skrabec <jernej.skrabec@siol.net>
> Cc: David Airlie <airlied@linux.ie>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: NXP Linux Team <linux-imx@nxp.com>
> Signed-off-by: Liu Ying <victor.liu@nxp.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 G?nther <agx@sigxcpu.org> 
 -- Guido

> -- 
> 2.7.4
>