Patch "drm/amdgpu: fix xclk freq on CHIP_STONEY" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    drm/amdgpu: fix xclk freq on CHIP_STONEY

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-amdgpu-fix-xclk-freq-on-chip_stoney.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From b447b079cf3a9971ea4d31301e673f49612ccc18 Mon Sep 17 00:00:00 2001
From: Chia-I Wu <olvaffe@xxxxxxxxx>
Date: Thu, 1 Jun 2023 14:48:08 -0700
Subject: drm/amdgpu: fix xclk freq on CHIP_STONEY

From: Chia-I Wu <olvaffe@xxxxxxxxx>

commit b447b079cf3a9971ea4d31301e673f49612ccc18 upstream.

According to Alex, most APUs from that time seem to have the same issue
(vbios says 48Mhz, actual is 100Mhz).  I only have a CHIP_STONEY so I
limit the fixup to CHIP_STONEY

Signed-off-by: Chia-I Wu <olvaffe@xxxxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/vi.c |   11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/vi.c
@@ -542,8 +542,15 @@ static u32 vi_get_xclk(struct amdgpu_dev
 	u32 reference_clock = adev->clock.spll.reference_freq;
 	u32 tmp;
 
-	if (adev->flags & AMD_IS_APU)
-		return reference_clock;
+	if (adev->flags & AMD_IS_APU) {
+		switch (adev->asic_type) {
+		case CHIP_STONEY:
+			/* vbios says 48Mhz, but the actual freq is 100Mhz */
+			return 10000;
+		default:
+			return reference_clock;
+		}
+	}
 
 	tmp = RREG32_SMC(ixCG_CLKPIN_CNTL_2);
 	if (REG_GET_FIELD(tmp, CG_CLKPIN_CNTL_2, MUX_TCLK_TO_XCLK))


Patches currently in stable-queue which might be from olvaffe@xxxxxxxxx are

queue-6.1/drm-amdgpu-fix-xclk-freq-on-chip_stoney.patch



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