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Fri, 16 Apr 2021 09:58:08 +0000 Received: from pendragon.ideasonboard.com (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 4A3935A5; Fri, 16 Apr 2021 11:58:02 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1618567082; bh=xSo6PytDu5Cq4mnyjhpzVYDwWNwyPGmVgHOT/48h4nU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=MZOdxX5ofISyaTc31LDkhK/plA7k0+HS91ESbp1PMm16M18wsilwkkSaOsQ2Cug4w G+DmizAgRLLcii1bDbmZ9zJe7k4kt5/6nT340AKnyGUJfLTSluhMP+PjX7UM9aUsVf 2TjmDMBTbT9JF4vbcSaaMTNZn0LW25TvON5CZO34= Date: Fri, 16 Apr 2021 12:58:00 +0300 From: Laurent Pinchart To: Neil Armstrong Cc: jonas@kwiboo.se, jernej.skrabec@siol.net, robert.foss@linaro.org, dri-devel@lists.freedesktop.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] drm/bridge: dw-hdmi: disable loading of DW-HDMI CEC sub-driver Message-ID: References: <20210416092737.1971876-1-narmstrong@baylibre.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210416092737.1971876-1-narmstrong@baylibre.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210416_025807_423765_C533C89B X-CRM114-Status: GOOD ( 15.18 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org Hi Neil, On Fri, Apr 16, 2021 at 11:27:35AM +0200, Neil Armstrong wrote: > This adds DW-HDMI driver a glue option to disable loading of the CEC sub-driver. > > On some SoCs, the CEC functionality is enabled in the IP config bits, but the > CEC bus is non-functional like on Amlogic SoCs, where the CEC config bit is set > but the DW-HDMI CEC signal is not connected to a physical pin, leading to some > confusion when the DW-HDMI CEC controller can't communicate on the bus. If we can't trust the CEC config bit, would it be better to not use it at all, and instead let each platform glue logic tell whether to enable CEC or not ? > Jernej Skrabec (1): > drm/bridge/synopsys: dw-hdmi: Add an option to suppress loading CEC > driver > > Neil Armstrong (1): > drm/meson: dw-hdmi: disable DW-HDMI CEC sub-driver > > drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 2 +- > drivers/gpu/drm/meson/meson_dw_hdmi.c | 1 + > include/drm/bridge/dw_hdmi.h | 2 ++ > 3 files changed, 4 insertions(+), 1 deletion(-) > -- Regards, Laurent Pinchart _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic