linux-kernel - Re: [PATCH v1] drm/bridge: tc358768: Fix DSI command tx

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Message-ID: <20241022171139.GA71850@francesco-nb>
Date: Tue, 22 Oct 2024 19:11:39 +0200
From: Francesco Dolcini <francesco@...cini.it>
To: Andrzej Hajda <andrzej.hajda@...el.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Robert Foss <rfoss@...nel.org>,
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
	Jonas Karlman <jonas@...boo.se>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Francesco Dolcini <francesco.dolcini@...adex.com>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH v1] drm/bridge: tc358768: Fix DSI command tx

Hello,

On Thu, Sep 26, 2024 at 04:12:46PM +0200, Francesco Dolcini wrote:
> From: Francesco Dolcini <francesco.dolcini@...adex.com>
> 
> Wait for the command transmission to be completed in the DSI transfer
> function polling for the dc_start bit to go back to idle state after the
> transmission is started.
> 
> This is documented in the datasheet and failures to do so lead to
> commands corruption.
> 
> Fixes: ff1ca6397b1d ("drm/bridge: Add tc358768 driver")
> Cc: stable@...r.kernel.org
> Signed-off-by: Francesco Dolcini <francesco.dolcini@...adex.com>

Just a gently ping on this,

Francesco