linux-kernel - [PATCH AUTOSEL 6.6 38/51] accel/ivpu: Disable d3hot

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Message-ID: <20240213002052.670571-38-sashal@kernel.org>
Date: Mon, 12 Feb 2024 19:20:15 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Jacek Lawrynowicz <jacek.lawrynowicz@...ux.intel.com>,
	Jeffrey Hugo <quic_jhugo@...cinc.com>,
	Sasha Levin <sashal@...nel.org>,
	stanislaw.gruszka@...ux.intel.com,
	ogabbay@...nel.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.6 38/51] accel/ivpu: Disable d3hot_delay on all NPU generations

From: Jacek Lawrynowicz <jacek.lawrynowicz@...ux.intel.com>

[ Upstream commit a7f31091ddf457352e3dd7ac183fdbd26b4dcd04 ]

NPU does not require this delay regardless of the generation.
All generations are integrated into the SOC.

Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@...ux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@...cinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240126122804.2169129-4-jacek.lawrynowicz@linux.intel.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/accel/ivpu/ivpu_drv.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/accel/ivpu/ivpu_drv.c b/drivers/accel/ivpu/ivpu_drv.c
index 7e9359611d69..8fb70e3c7b9c 100644
--- a/drivers/accel/ivpu/ivpu_drv.c
+++ b/drivers/accel/ivpu/ivpu_drv.c
@@ -467,9 +467,8 @@ static int ivpu_pci_init(struct ivpu_device *vdev)
 	/* Clear any pending errors */
 	pcie_capability_clear_word(pdev, PCI_EXP_DEVSTA, 0x3f);
 
-	/* VPU 37XX does not require 10m D3hot delay */
-	if (ivpu_hw_gen(vdev) == IVPU_HW_37XX)
-		pdev->d3hot_delay = 0;
+	/* NPU does not require 10m D3hot delay */
+	pdev->d3hot_delay = 0;
 
 	ret = pcim_enable_device(pdev);
 	if (ret) {
-- 
2.43.0