Commit 5949e7c4 authored by Fangzhi Zuo's avatar Fangzhi Zuo Committed by Alex Deucher
Browse files

drm/amd/display: Enable Dynamic DTBCLK Switch 



[WHAT]
Since dcn35, DTBCLK can be disabled when no DP2 sink connected for
power saving purpose.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: default avatarAurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: default avatarFangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: default avatarAlex Hung <alex.hung@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2e976637

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+4 −0
Original line number Diff line number Diff line
@@ -2000,6 +2000,10 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) 


	init_data.flags.disable_ips_in_vpb = 0;



	/* DCN35 and above supports dynamic DTBCLK switch */

	if (amdgpu_ip_version(adev, DCE_HWIP, 0) >= IP_VERSION(3, 5, 0))

		init_data.flags.allow_0_dtb_clk = true;



	/* Enable DWB for tested platforms only */

	if (amdgpu_ip_version(adev, DCE_HWIP, 0) >= IP_VERSION(3, 0, 0))

		init_data.num_virtual_links = 1;