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([2a01:e0a:106d:1080:5dda:3751:f88e:6ff]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48febe7543asm127859995e9.28.2026.05.20.02.17.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 20 May 2026 02:17:16 -0700 (PDT) Message-ID: Date: Wed, 20 May 2026 11:17:15 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Neil Armstrong Reply-To: Neil Armstrong Subject: Re: [PATCH v7 16/23] drm: bridge: dw_hdmi: Update EDID and CEC phys addr in bridge detect() To: Jonas Karlman , Andrzej Hajda , Robert Foss , Heiko Stuebner , Laurent Pinchart , Jernej Skrabec , Luca Ceresoli , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: Liu Ying , Sandy Huang , Andy Yan , Chen-Yu Tsai , Christian Hewitt , Diederik de Haas , Nicolas Frattaroli , Dmitry Baryshkov , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-sunxi@lists.linux.dev, imx@lists.linux.dev, linux-kernel@vger.kernel.org References: <20260518180206.2480119-1-jonas@kwiboo.se> <20260518180206.2480119-17-jonas@kwiboo.se> Content-Language: en-US, fr Autocrypt: addr=neil.armstrong@linaro.org; keydata= xsBNBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAHNKk5laWwgQXJtc3Ryb25nIDxuZWlsLmFybXN0cm9uZ0BsaW5hcm8ub3JnPsLAkQQTAQoA OwIbIwULCQgHAwUVCgkICwUWAgMBAAIeAQIXgBYhBInsPQWERiF0UPIoSBaat7Gkz/iuBQJk Q5wSAhkBAAoJEBaat7Gkz/iuyhMIANiD94qDtUTJRfEW6GwXmtKWwl/mvqQtaTtZID2dos04 YqBbshiJbejgVJjy+HODcNUIKBB3PSLaln4ltdsV73SBcwUNdzebfKspAQunCM22Mn6FBIxQ GizsMLcP/0FX4en9NaKGfK6ZdKK6kN1GR9YffMJd2P08EO8mHowmSRe/ExAODhAs9W7XXExw UNCY4pVJyRPpEhv373vvff60bHxc1k/FF9WaPscMt7hlkbFLUs85kHtQAmr8pV5Hy9ezsSRa GzJmiVclkPc2BY592IGBXRDQ38urXeM4nfhhvqA50b/nAEXc6FzqgXqDkEIwR66/Gbp0t3+r yQzpKRyQif3OwE0ETVkGzwEIALyKDN/OGURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYp QTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXMcoJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+ SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hiSvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY 4yG6xI99NIPEVE9lNBXBKIlewIyVlkOaYvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoM Mtsyw18YoX9BqMFInxqYQQ3j/HpVgTSvmo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUX oUk33HEAEQEAAcLAXwQYAQIACQUCTVkGzwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfn M7IbRuiSZS1unlySUVYu3SD6YBYnNi3G5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa3 3eDIHu/zr1HMKErm+2SD6PO9umRef8V82o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCS KmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy 4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJC3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTT QbM0WUIBIcGmq38+OgUsMYu4NzLu7uZFAcmp6h8g Organization: Linaro In-Reply-To: <20260518180206.2480119-17-jonas@kwiboo.se> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 5/18/26 20:01, Jonas Karlman wrote: > Update EDID and CEC phys addr in the bridge detect() func to closely > match the behavior of a bridge connector with a HDMI bridge attached > and the dw-hdmi connector. > > This change introduce a slight delay to the bridge connector detect() > and get_modes() funcs due to multiple EDID reads. This is an acceptable > added delay to help ensure EDID and CEC phys addr always are correct. > > Signed-off-by: Jonas Karlman > --- > v7: Update commit message > v6: New patch > > This is a temporary change until dw-hdmi is fully converted into a > HDMI bridge in a future part of this multi-series effort. > > The patch "drm/bridge-connector: Use cached connector status in > .get_modes()" [1] can help remove one unnecessary EDID read until > dw-hdmi is fully converted into a HDMI bridge. > > [1] https://lore.kernel.org/dri-devel/20260426-dw-hdmi-qp-scramb-v5-3-d778e70c317b@collabora.com/ > --- > drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 11 ++++++++++- > 1 file changed, 10 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > index 37406555af7b..0c4388e7aa5e 100644 > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > @@ -2947,8 +2947,17 @@ static enum drm_connector_status > dw_hdmi_bridge_detect(struct drm_bridge *bridge, struct drm_connector *connector) > { > struct dw_hdmi *hdmi = bridge->driver_private; > + enum drm_connector_status status; > > - return dw_hdmi_detect(hdmi); > + status = dw_hdmi_detect(hdmi); > + > + /* > + * Update EDID and CEC phys addr to match the behavior of a bridge > + * connector with a HDMI bridge attached and the dw-hdmi connector. > + */ > + dw_hdmi_connector_status_update(hdmi, connector, status); > + > + return status; > } > > static const struct drm_edid *dw_hdmi_bridge_edid_read(struct drm_bridge *bridge, Reviewed-by: Neil Armstrong Thanks, Neil