From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jernej Skrabec Date: Sat, 6 Mar 2021 20:54:20 +0100 Subject: [PATCH v2 02/19] video: sunxi: Add mode_valid callback to sunxi_dw_hdmi In-Reply-To: <20210306195437.9740-1-jernej.skrabec@siol.net> References: <20210306195437.9740-1-jernej.skrabec@siol.net> Message-ID: <20210306195437.9740-3-jernej.skrabec@siol.net> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Currently driver accepts all resolution which won't work on 4k screens. Add validation callback which limits acceptable resolutions to 297 MHz. Reviewed-by: Andre Przywara Signed-off-by: Jernej Skrabec --- drivers/video/sunxi/sunxi_dw_hdmi.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/video/sunxi/sunxi_dw_hdmi.c b/drivers/video/sunxi/sunxi_dw_hdmi.c index 0b8cefc311ef..e3811a2ec15f 100644 --- a/drivers/video/sunxi/sunxi_dw_hdmi.c +++ b/drivers/video/sunxi/sunxi_dw_hdmi.c @@ -305,6 +305,12 @@ static int sunxi_dw_hdmi_read_edid(struct udevice *dev, u8 *buf, int buf_size) return dw_hdmi_read_edid(&priv->hdmi, buf, buf_size); } +static bool sunxi_dw_hdmi_mode_valid(struct udevice *dev, + const struct display_timing *timing) +{ + return timing->pixelclock.typ <= 297000000; +} + static int sunxi_dw_hdmi_enable(struct udevice *dev, int panel_bpp, const struct display_timing *edid) { @@ -388,6 +394,7 @@ static int sunxi_dw_hdmi_probe(struct udevice *dev) static const struct dm_display_ops sunxi_dw_hdmi_ops = { .read_edid = sunxi_dw_hdmi_read_edid, .enable = sunxi_dw_hdmi_enable, + .mode_valid = sunxi_dw_hdmi_mode_valid, }; U_BOOT_DRIVER(sunxi_dw_hdmi) = { -- 2.30.1