LT9611C Device Driver#762
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Merge Check Failed: No CR Numbers Found Error: No Change Request numbers were found. Please add Change Request numbers to your pull request description in the format CRs-Fixed: 12345 or link GitHub issues that are associated with Change Requests. |
…o HDMI driver LT9611C(EX/UXD) is an I2C-controlled chip that Receiver signal/dual port mipi dsi and output hdmi, differences in hardware features: - LT9611C: supports 1-port mipi dsi to hdmi 1.4 - LT9611EX: supports 2-port mipi dsi to hdmi 1.4 - LT9611UXD: supports 2-port mipi dsi to hdmi 1.4/2.0 Link : https://lore.kernel.org/lkml/20260508134009.4582-3-syyang@lontium.com/ Signed-off-by: Sunyun Yang <syyang@lontium.com> Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
…iver LT9611C(EX/UXD) is an I2C-controlled chip that Receiver signal/dual port mipi dsi and output hdmi, differences in hardware features: - LT9611C: supports 1-port mipi dsi to hdmi 1.4 - LT9611EX: supports 2-port mipi dsi to hdmi 1.4 - LT9611UXD: supports 2-port mipi dsi to hdmi 1.4/2.0 Link : https://lore.kernel.org/lkml/20260508134009.4582-3-syyang@lontium.com/ Signed-off-by: Sunyun Yang <syyang@lontium.com> Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
…T9611C Add a new optional `lontium,port-select` property to describe the DSI input port configuration for the LT9611C variant, which supports single-port (A or B) and dual-port (A+B) operation. This property allows explicitly selecting the active DSI input port(s): 0 = port A (default) 1 = port B 2 = ports A and B (dual-port) Link: https://patch.msgid.link/20260611-lt9611-b4-send-v1-1-42abbcd3bb1e@oss.qualcomm.com Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
…00ms The on-chip MCU may take longer than 100ms to respond on some hardware variants or slower I2C buses, causing spurious -ETIMEDOUT errors during normal operation. Double the poll timeout from 100ms to 200ms to improve reliability without changing the poll interval. Link: https://patch.msgid.link/20260611-lt9611-b4-send-v1-2-42abbcd3bb1e@oss.qualcomm.com Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
Remove two redundant lt9611c_reset() calls: 1. In lt9611c_bridge_atomic_pre_enable(): a reset is already performed during probe and resume; calling it again on every display enable adds ~440ms of unnecessary latency. 2. At the end of lt9611c_probe(): a reset was already performed earlier in probe before lt9611c_lock(). The second reset is redundant. Also, the DRM HDMI bridge framework requires hdmi_write_hdmi_infoframe and hdmi_clear_hdmi_infoframe callbacks for HDMI vendor-specific infoframe (VSI) support, used for features such as HDR metadata signalling. This patch add stub implementations that return success. Wire them into the bridge function table. Also, Store the chip variant enum value in the of_match_table .data field and retrieve it via of_device_get_match_data() when probing from a DT node. Fall back to i2c_device_id.driver_data for non-DT (e.g. ACPI) probe paths. This is the standard kernel pattern for passing per-compatible data through the OF match table, and avoids relying solely on the I2C device ID table for chip type detection when DT is available. Populate bridge.vendor and bridge.product so the DRM HDMI framework can report the correct manufacturer and product name in the HDMI connector properties (visible via xrandr --prop and related sysfs entries). Link: https://patch.msgid.link/20260611-lt9611-b4-send-v1-3-42abbcd3bb1e@oss.qualcomm.com Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
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Merge Check Failed: No CR Numbers Found Error: No Change Request numbers were found. Please add Change Request numbers to your pull request description in the format CRs-Fixed: 12345 or link GitHub issues that are associated with Change Requests. |
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Merge Check Failed: No Change Task Found No associated change tasks found for CR 4552827 on any of the following entities: Entities:
CR: 4552827 Please ensure the CR has a change task associated with at least one of the entities for this branch. |
This driver provides access to LT9611C bridge driver to access Lontium LT9611UXD DSI to HDMI chip. Link: https://patch.msgid.link/20260618-shikra-work-v1-1-dc30381263f9@oss.qualcomm.com Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
…property Some board designs connect only DSI port B, or both DSI ports A and B, to the LT9611C. Add support for a 'lontium,port-select' DT property that allows the board DTS to specify which DSI port(s) the chip should use: 0 = PORT_SELECT_A (default, single DSI port A) 1 = PORT_SELECT_B (single DSI port B) 2 = PORT_SELECT_AB (dual DSI ports A+B) When the property is absent the driver defaults to PORT_SELECT_A (0), preserving backward compatibility with existing DTS files. The selected port is programmed into the chip via lt9611c_select_port() during probe, after the chip ID has been verified. Link: https://patch.msgid.link/20260611-lt9611-b4-send-v1-4-42abbcd3bb1e@oss.qualcomm.com Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
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Device Driver changes for lt9611c
CRs-Fixed: 4552827