Hi allen. On Thu, Jun 23, 2022 at 05:31:54PM +0800, allen wrote: > From: allen chen <allen.chen@xxxxxxxxxx> > > add read max-lane and max-pixel-clock from dt property > > Signed-off-by: Allen-kh Cheng <allen-kh.cheng@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> Can you fix so your s-o-b mail and author mail matches? As it is now an error is flagged as they do not match. Sam > Signed-off-by: Pin-yen Lin <treapking@xxxxxxxxxxxx> > --- > drivers/gpu/drm/bridge/ite-it6505.c | 35 ++++++++++++++++++++++++++--- > 1 file changed, 32 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c > index 4b673c4792d77..c9121d4635a52 100644 > --- a/drivers/gpu/drm/bridge/ite-it6505.c > +++ b/drivers/gpu/drm/bridge/ite-it6505.c > @@ -436,6 +436,8 @@ struct it6505 { > bool powered; > bool hpd_state; > u32 afe_setting; > + u32 max_dpi_pixel_clock; > + u32 max_lane_count; > enum hdcp_state hdcp_status; > struct delayed_work hdcp_work; > struct work_struct hdcp_wait_ksv_list; > @@ -1466,7 +1468,8 @@ static void it6505_parse_link_capabilities(struct it6505 *it6505) > it6505->lane_count = link->num_lanes; > DRM_DEV_DEBUG_DRIVER(dev, "Sink support %d lanes training", > it6505->lane_count); > - it6505->lane_count = min_t(int, it6505->lane_count, MAX_LANE_COUNT); > + it6505->lane_count = min_t(int, it6505->lane_count, > + it6505->max_lane_count); > > it6505->branch_device = drm_dp_is_branch(it6505->dpcd); > DRM_DEV_DEBUG_DRIVER(dev, "Sink %sbranch device", > @@ -2895,7 +2898,7 @@ it6505_bridge_mode_valid(struct drm_bridge *bridge, > if (mode->flags & DRM_MODE_FLAG_INTERLACE) > return MODE_NO_INTERLACE; > > - if (mode->clock > DPI_PIXEL_CLK_MAX) > + if (mode->clock > it6505->max_dpi_pixel_clock) > return MODE_CLOCK_HIGH; > > it6505->video_info.clock = mode->clock; > @@ -3057,6 +3060,8 @@ static void it6505_parse_dt(struct it6505 *it6505) > { > struct device *dev = &it6505->client->dev; > u32 *afe_setting = &it6505->afe_setting; > + u32 *max_lane_count = &it6505->max_lane_count; > + u32 *max_dpi_pixel_clock = &it6505->max_dpi_pixel_clock; > > it6505->lane_swap_disabled = > device_property_read_bool(dev, "no-laneswap"); > @@ -3072,7 +3077,31 @@ static void it6505_parse_dt(struct it6505 *it6505) > } else { > *afe_setting = 0; > } > - DRM_DEV_DEBUG_DRIVER(dev, "using afe_setting: %d", *afe_setting); > + > + if (device_property_read_u32(dev, "max-lane-count", > + max_lane_count) == 0) { > + if (*max_lane_count > 4 || *max_lane_count == 3) { > + dev_err(dev, "max lane count error, use default"); > + *max_lane_count = MAX_LANE_COUNT; > + } > + } else { > + *max_lane_count = MAX_LANE_COUNT; > + } > + > + if (device_property_read_u32(dev, "max-dpi-pixel-clock", > + max_dpi_pixel_clock) == 0) { > + if (*max_dpi_pixel_clock > 297000) { > + dev_err(dev, "max pixel clock error, use default"); > + *max_dpi_pixel_clock = DPI_PIXEL_CLK_MAX; > + } > + } else { > + *max_dpi_pixel_clock = DPI_PIXEL_CLK_MAX; > + } > + > + DRM_DEV_DEBUG_DRIVER(dev, "using afe_setting: %u, max_lane_count: %u", > + it6505->afe_setting, it6505->max_lane_count); > + DRM_DEV_DEBUG_DRIVER(dev, "using max_dpi_pixel_clock: %u kHz", > + it6505->max_dpi_pixel_clock); > } > > static ssize_t receive_timing_debugfs_show(struct file *file, char __user *buf, > -- > 2.25.1