These registers might change their value without any host write operation. Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/bridge/tc358767.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 61d8710f46293..152a6dc916079 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -2049,9 +2049,16 @@ static bool tc_readable_reg(struct device *dev, unsigned int reg) } static const struct regmap_range tc_volatile_ranges[] = { + regmap_reg_range(PPI_BUSYPPI, PPI_BUSYPPI), + regmap_reg_range(DSI_BUSYDSI, DSI_BUSYDSI), + regmap_reg_range(DSI_LANESTATUS0, DSI_INTSTATUS), + regmap_reg_range(DSIERRCNT, DSIERRCNT), regmap_reg_range(VFUEN0, VFUEN0), + regmap_reg_range(SYSSTAT, SYSSTAT), regmap_reg_range(GPIOI, GPIOI), regmap_reg_range(INTSTS_G, INTSTS_G), + regmap_reg_range(DP0_VMNGENSTATUS, DP0_VMNGENSTATUS), + regmap_reg_range(DP0_AMNGENSTATUS, DP0_AMNGENSTATUS), regmap_reg_range(DP0_AUXWDATA(0), DP0_AUXSTATUS), regmap_reg_range(DP0_LTSTAT, DP0_SNKLTCHGREQ), regmap_reg_range(DP_PHY_CTRL, DP_PHY_CTRL), -- 2.34.1