From: Oliver Graute oliver.graute@kococonnector.com
commit b6821b0d9b56386d2bf14806f90ec401468c799f upstream.
In rare cases the display is flipped or mirrored. This was observed more often in a low temperature environment. A clean reset on init_display() should help to get registers in a sane state.
Fixes: ef8f317795da (staging: fbtft: use init function instead of init sequence) Cc: stable@vger.kernel.org Signed-off-by: Oliver Graute oliver.graute@kococonnector.com Link: https://lore.kernel.org/r/20220210085322.15676-1-oliver.graute@kococonnector... [sudip: adjust context] Signed-off-by: Sudip Mukherjee sudipm.mukherjee@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/staging/fbtft/fb_st7789v.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/staging/fbtft/fb_st7789v.c +++ b/drivers/staging/fbtft/fb_st7789v.c @@ -85,6 +85,8 @@ enum st7789v_command { */ static int init_display(struct fbtft_par *par) { + par->fbtftops.reset(par); + /* turn off sleep mode */ write_reg(par, MIPI_DCS_EXIT_SLEEP_MODE); mdelay(120);