From: Charlene Liu <charlene.liu@xxxxxxx> [Description] This is for DC_I2c arbitration use between HW use/SW use and DMCU use. Signed-off-by: Charlene Liu <charlene.liu@xxxxxxx> Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@xxxxxxx> Reviewed-by: Tony Cheng <Tony.Cheng@xxxxxxx> Acked-by: Bhawanpreet Lakha <Bhawanpreet Lakha@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> --- drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c | 2 ++ 1 file changed, 2 insertions(+) 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 d658b862430a..b2786a704708 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 @@ -306,6 +306,8 @@ static bool setup_engine( #if defined(CONFIG_DRM_AMD_DC_DCN2_0) uint32_t reset_length = 0; #endif + /* we have checked I2c not used by DMCU, set SW use I2C REQ to 1 to indicate SW using it*/ + REG_UPDATE(DC_I2C_ARBITRATION, DC_I2C_SW_USE_I2C_REG_REQ, 1); /* we have checked I2c not used by DMCU, set SW use I2C REQ to 1 to indicate SW using it*/ REG_UPDATE(DC_I2C_ARBITRATION, DC_I2C_SW_USE_I2C_REG_REQ, 1); -- 2.20.1 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
