linux-kernel - [PATCH AUTOSEL 6.10 3/3] drm/amd/pm: fix the pp_dpm

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Message-ID: <20240918063614.238807-3-sashal@kernel.org>
Date: Wed, 18 Sep 2024 02:36:11 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Kenneth Feng <kenneth.feng@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Sasha Levin <sashal@...nel.org>,
	evan.quan@....com,
	christian.koenig@....com,
	Xinhui.Pan@....com,
	airlied@...ux.ie,
	daniel@...ll.ch,
	amd-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.10 3/3] drm/amd/pm: fix the pp_dpm_pcie issue on smu v14.0.2/3

From: Kenneth Feng <kenneth.feng@....com>

[ Upstream commit 7a0982523cf3ff00f35b210fc3405c528a2ce7af ]

fix the pp_dpm_pcie issue on smu v14.0.2/3 as below:
0: 2.5GT/s, x4 250Mhz
1: 8.0GT/s, x4 616Mhz *
2: 8.0GT/s, x4 1143Mhz *
the middle level can be removed since it is always skipped on
smu v14.0.2/3

Signed-off-by: Kenneth Feng <kenneth.feng@....com>
Acked-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
(cherry picked from commit fedf6db3ea9dc5eda0b78cfbbb8f7a88b97e5b24)
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
index 06b65159f7b4..33c7740dd50a 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
@@ -672,6 +672,9 @@ static int smu_v14_0_2_set_default_dpm_table(struct smu_context *smu)
 		pcie_table->clk_freq[pcie_table->num_of_link_levels] =
 					skutable->LclkFreq[link_level];
 		pcie_table->num_of_link_levels++;
+
+		if (link_level == 0)
+			link_level++;
 	}
 
 	return 0;
-- 
2.43.0