Hi Sasha, On 5/30/22 8:49 AM, Sasha Levin wrote: > From: Samuel Holland <samuel@xxxxxxxxxxxx> > > [ Upstream commit b9b52d2f4aafa2bd637ace0f24615bdad8e49f01 ] > > D1 has a TCON TOP, so its quirks are similar to those for the R40 TCONs. > While there are some register changes, the part of the TCON TV supported > by the driver matches the R40 quirks, so that quirks structure can be > reused. D1 has the first supported TCON LCD with a TCON TOP, so the TCON > LCD needs a new quirks structure. > > D1's TCON LCD hardware supports LVDS; in fact it provides dual-link LVDS > from a single TCON. However, it comes with a brand new LVDS PHY. Since > this PHY has not been tested, leave out LVDS driver support for now. > > Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx> > Reviewed-by: Jernej Skrabec <jernej.skrabec@xxxxxxxxx> > Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx> > Link: https://patchwork.freedesktop.org/patch/msgid/20220424162633.12369-14-samuel@xxxxxxxxxxxx > Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> This patch adds support for hardware in a SoC that will not boot on earlier kernel releases, so there is no benefit to backporting the patch (to any previous release). Regards, Samuel > --- > drivers/gpu/drm/sun4i/sun4i_tcon.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c > index 113c032a2720..0ebb7c1dfee6 100644 > --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c > +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c > @@ -1316,6 +1316,12 @@ static const struct sun4i_tcon_quirks sun9i_a80_tcon_tv_quirks = { > .needs_edp_reset = true, > }; > > +static const struct sun4i_tcon_quirks sun20i_d1_lcd_quirks = { > + .has_channel_0 = true, > + .dclk_min_div = 1, > + .set_mux = sun8i_r40_tcon_tv_set_mux, > +}; > + > /* sun4i_drv uses this list to check if a device node is a TCON */ > const struct of_device_id sun4i_tcon_of_table[] = { > { .compatible = "allwinner,sun4i-a10-tcon", .data = &sun4i_a10_quirks }, > @@ -1329,6 +1335,8 @@ const struct of_device_id sun4i_tcon_of_table[] = { > { .compatible = "allwinner,sun8i-v3s-tcon", .data = &sun8i_v3s_quirks }, > { .compatible = "allwinner,sun9i-a80-tcon-lcd", .data = &sun9i_a80_tcon_lcd_quirks }, > { .compatible = "allwinner,sun9i-a80-tcon-tv", .data = &sun9i_a80_tcon_tv_quirks }, > + { .compatible = "allwinner,sun20i-d1-tcon-lcd", .data = &sun20i_d1_lcd_quirks }, > + { .compatible = "allwinner,sun20i-d1-tcon-tv", .data = &sun8i_r40_tv_quirks }, > { } > }; > MODULE_DEVICE_TABLE(of, sun4i_tcon_of_table); >
