Linux
LCDs (LVDS) Bring-Up on RK3568: A Study of the Data Flow
Aug 18, 2025 in Linux
Categories:
5 minute read
Background Knowledge Reference: How-to: Display Interface Debugging Standard Operating Procedure (SOP) Reference: Analysis of Key Concepts in the Rockchip Display Subsystem Example: Using LVDS as a case study Data Flow - (Hardware Perspective) Okay, …
How-to: Forcing HDMI Configuration on RK3568
Aug 18, 2025 in Linux
Categories:
5 minute read
How-to: Keep HDMI Connected No Matter What Schematic: Analysis: Not controlled by GPIO Setting either hpd-state or force_hpd has no effect. Using display-timings also doesn’t work. The next step would be to consider changing the cmdline… …
Analysis of Key Concepts in the Rockchip Display Subsystem
Aug 18, 2025 in Linux
Categories:
3 minute read
Calculation Formula for “Frame Rate” in DTS The frame rate of a mode is not written directly as a field in the timings; instead, it is calculated based on the clock frequency. The calculation formula is as follows: $$ \begin{aligned} …
GMAC Bring Up Work Flow
Jul 25, 2025 in Linux
4 minute read
1. Identifying the GMAC from the Schematic From the default DTS provided by the SDK, it can be seen that there are two GMACs, gmac0 and gmac1. 1.1 First, check the schematic from the hardware engineer, search for GMAC, and see if gmac1 or gmac0 is …