From: Aurabindo Pillai <[email protected]> [Why] When unused, all memory blocks should be put in a low power state
[How] Check the value of enable_mem_low_power.bits.vga and set corresponding bit in the hardware register Acked-by: Stylon Wang <[email protected]> Signed-off-by: Aurabindo Pillai <[email protected]> Reviewed-by: Rodrigo Siqueira <[email protected]> --- drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c index 4cd4ae07d73d..6cef62d7a2e5 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c @@ -461,6 +461,11 @@ void dcn30_init_hw(struct dc *dc) REG_SET_2(ODM_MEM_PWR_CTRL3, 0, ODM_MEM_UNASSIGNED_PWR_MODE, 3, ODM_MEM_VBLANK_PWR_MODE, 1); } + if (dc->debug.enable_mem_low_power.bits.vga) { + // Power down VGA memory + REG_UPDATE(MMHUBBUB_MEM_PWR_CNTL, VGA_MEM_PWR_FORCE, 1); + } + if (dc->ctx->dc_bios->fw_info_valid) { res_pool->ref_clocks.xtalin_clock_inKhz = dc->ctx->dc_bios->fw_info.pll_info.crystal_frequency; -- 2.41.0
