Commit c764b7af authored by Yang Wang's avatar Yang Wang Committed by Alex Deucher
Browse files

drm/amd/pm: fix smu v13 soft clock frequency setting issue 



v1:
resolve the issue where some freq frequencies cannot be set correctly
due to insufficient floating-point precision.

v2:
patch this convert on 'max' value only.

Signed-off-by: default avatarYang Wang <kevinyang.wang@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 6194f60c)
Cc: stable@vger.kernel.org
parent 63804fed

drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0.h

+1 −0
Original line number Diff line number Diff line
@@ -56,6 +56,7 @@ 
#define SMUQ10_TO_UINT(x) ((x) >> 10)

#define SMUQ10_FRAC(x) ((x) & 0x3ff)

#define SMUQ10_ROUND(x) ((SMUQ10_TO_UINT(x)) + ((SMUQ10_FRAC(x)) >= 0x200))

#define SMU_V13_SOFT_FREQ_ROUND(x)	((x) + 1)



extern const int pmfw_decoded_link_speed[5];

extern const int pmfw_decoded_link_width[7];

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c

+1 −0
Original line number Diff line number Diff line
@@ -1555,6 +1555,7 @@ int smu_v13_0_set_soft_freq_limited_range(struct smu_context *smu, 
		return clk_id;



	if (max > 0) {

		max = SMU_V13_SOFT_FREQ_ROUND(max);

		if (automatic)

			param = (uint32_t)((clk_id << 16) | 0xffff);

		else