This is a note to let you know that I've just added the patch titled
drm/amd: Fix initialization for nbio 7.5.1
to the 6.2-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-amd-fix-initialization-for-nbio-7.5.1.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 65a24000808f70ac69bd2a96381fa0c7341f20c0 Mon Sep 17 00:00:00 2001
From: Mario Limonciello <mario.limonciello@xxxxxxx>
Date: Sun, 19 Feb 2023 23:04:04 -0600
Subject: drm/amd: Fix initialization for nbio 7.5.1
From: Mario Limonciello <mario.limonciello@xxxxxxx>
commit 65a24000808f70ac69bd2a96381fa0c7341f20c0 upstream.
A mistake has been made in the BIOS for some ASICs with NBIO 7.5.1
where some NBIO registers aren't properly setup.
Ensure that they're set during initialization.
Tested-by: Richard Gong <richard.gong@xxxxxxx>
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # 6.1.x
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c
@@ -382,6 +382,11 @@ static void nbio_v7_2_init_registers(str
if (def != data)
WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regBIF1_PCIE_MST_CTRL_3), data);
break;
+ case IP_VERSION(7, 5, 1):
+ data = RREG32_SOC15(NBIO, 0, regRCC_DEV2_EPF0_STRAP2);
+ data &= ~RCC_DEV2_EPF0_STRAP2__STRAP_NO_SOFT_RESET_DEV2_F0_MASK;
+ WREG32_SOC15(NBIO, 0, regRCC_DEV2_EPF0_STRAP2, data);
+ fallthrough;
default:
def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CONFIG_CNTL));
data = REG_SET_FIELD(data, PCIE_CONFIG_CNTL,
Patches currently in stable-queue which might be from mario.limonciello@xxxxxxx are
queue-6.2/drm-amd-avoid-assert-for-some-message-failures.patch
queue-6.2/acpica-drop-port-i-o-validation-for-some-regions.patch
queue-6.2/drm-amd-fix-initialization-for-nbio-7.5.1.patch
queue-6.2/bluetooth-btusb-add-new-pid-vid-0489-e0f2-for-mt7921.patch
queue-6.2/drm-amd-avoid-bug-for-case-of-sriov-missing-ip-versi.patch
