diff options
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c index 4e06468a6284..0421b267a0b5 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c @@ -377,10 +377,16 @@ static bool setup_engine( } /** + * cntl_stuck_hw_workaround - Workaround for I2C engine stuck state + * @dce_i2c_hw: Pointer to dce_i2c_hw structure + * * If we boot without an HDMI display, the I2C engine does not get initialized * correctly. One of its symptoms is that SW_USE_I2C does not get cleared after - * acquire, so that after setting SW_DONE_USING_I2C on release, the engine gets + * acquire. After setting SW_DONE_USING_I2C on release, the engine gets * immediately reacquired by SW, preventing DMUB from using it. + * + * This function checks the I2C arbitration status and applies a release + * workaround if necessary. */ static void cntl_stuck_hw_workaround(struct dce_i2c_hw *dce_i2c_hw) { |