Le jeu. 22 sept. 2022 à 14:43, Philippe Schenker <dev@xxxxxxxxxxxx> a écrit : > > From: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx> > > Correct I2C address for the register list in lt8912_write_lvds_config(), > these registers are on the first I2C address (0x48), the current > function is just writing garbage to the wrong registers and this creates > multiple issues (artifacts and output completely corrupted) on some HDMI > displays. > > Correct I2C address comes from Lontium documentation and it is the one > used on other out-of-tree LT8912B drivers [1]. > > [1] https://github.com/boundarydevices/linux/blob/boundary-imx_5.10.x_2.0.0/drivers/video/lt8912.c#L296 > > Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") > Signed-off-by: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx> > Signed-off-by: Philippe Schenker <philippe.schenker@xxxxxxxxxxx> Acked-by: Adrien Grassein <adrien.grassein@xxxxxxxxx> > --- > > drivers/gpu/drm/bridge/lontium-lt8912b.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c > index 6a4bb7422176..5968f4af190b 100644 > --- a/drivers/gpu/drm/bridge/lontium-lt8912b.c > +++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c > @@ -188,7 +188,7 @@ static int lt8912_write_lvds_config(struct lt8912 *lt) > {0x03, 0xff}, > }; > > - return regmap_multi_reg_write(lt->regmap[I2C_CEC_DSI], seq, ARRAY_SIZE(seq)); > + return regmap_multi_reg_write(lt->regmap[I2C_MAIN], seq, ARRAY_SIZE(seq)); > }; > > static inline struct lt8912 *bridge_to_lt8912(struct drm_bridge *b) > -- > 2.37.3 >
