Allow the DCS Write FIFO in the cdns-dsi controller to reset before any DCS packet is transmitted to the DSI sink device. Signed-off-by: Aradhya Bhatia <a-bhatia1@xxxxxx> --- drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c index 05d2f4cc50da..87fdd07ca0bc 100644 --- a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c +++ b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c @@ -1037,6 +1037,9 @@ static ssize_t cdns_dsi_transfer(struct mipi_dsi_host *host, cdns_dsi_init_link(dsi); + /* Reset the DCS Write FIFO */ + writel(0x00, dsi->regs + DIRECT_CMD_FIFO_RST); + ret = mipi_dsi_create_packet(&packet, msg); if (ret) goto out; -- 2.34.1
