Hi, On Tue, May 14, 2024 at 6:47 PM Cong Yang <yangcong5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > +static int hx83102_prepare(struct drm_panel *panel) > +{ > + struct hx83102 *ctx = panel_to_hx83102(panel); > + struct mipi_dsi_device *dsi = ctx->dsi; > + struct device *dev = &dsi->dev; > + int ret; > + > + gpiod_set_value(ctx->enable_gpio, 0); > + usleep_range(1000, 1500); > + > + ret = regulator_enable(ctx->pp1800); > + if (ret < 0) > + return ret; > + > + usleep_range(3000, 5000); > + > + ret = regulator_enable(ctx->avdd); > + if (ret < 0) > + goto poweroff1v8; > + ret = regulator_enable(ctx->avee); > + if (ret < 0) > + goto poweroffavdd; > + > + usleep_range(10000, 11000); > + > + mipi_dsi_dcs_nop(ctx->dsi); > + usleep_range(1000, 2000); > + > + gpiod_set_value(ctx->enable_gpio, 1); > + usleep_range(1000, 2000); > + gpiod_set_value(ctx->enable_gpio, 0); > + usleep_range(1000, 2000); > + gpiod_set_value(ctx->enable_gpio, 1); > + usleep_range(6000, 10000); > + > + ret = ctx->desc->init(ctx); > + if (ret < 0) > + goto poweroff; > + > + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); > + if (ret) { > + dev_err(dev, "Failed to exit sleep mode: %d\n", ret); > + return ret; > + } The above "return ret" should be "goto poweroff". Please send a v8. -Doug