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From: Florian Eckert <fe@dev.tdt.de>
To: "Chuanhua Lei" <lchuanhua@maxlinear.com>,
	"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
	"Manivannan Sadhasivam" <mani@kernel.org>,
	"Rob Herring" <robh@kernel.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Johan Hovold" <johan+linaro@kernel.org>,
	"Sajid Dalvi" <sdalvi@google.com>,
	"Ajay Agarwal" <ajayagarwal@google.com>
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
	Florian Eckert <fe@dev.tdt.de>
Subject: [PATCH 4/5] PCI: intel-gw: Remove atu base assignment
Date: Tue, 17 Mar 2026 11:12:52 +0100	[thread overview]
Message-ID: <20260317-pcie-intel-gw-v1-4-7fe13726ad4f@dev.tdt.de> (raw)
In-Reply-To: <20260317-pcie-intel-gw-v1-0-7fe13726ad4f@dev.tdt.de>

In the current implementation, only one PCIe bridge is recognised. This
change removes the assignment of the ATU base address during host setup.
Instead, the ATU base address is read from the device tree. To do this,
the 'atu' range of the DTS entry must be changed for PCIe.

Old DTS entry for PCIe:
reg = <0xd1000000 0x1000>,
	<0xd3000000 0x20000>,
	<0xd0c41000.0x1000>;
reg-names = "dbi", "config", "app";

New DTS entry for PCIe
reg = <0xd1000000 0x1000>,
	<0xd10c0000 0x1000>,
	<0xd3000000 0x20000>,
	<0xd0c41000.0x1000>;
reg-names = "dbi", "atu", "config", "app";

Signed-off-by: Florian Eckert <fe@dev.tdt.de>
---
 drivers/pci/controller/dwc/pcie-intel-gw.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c b/drivers/pci/controller/dwc/pcie-intel-gw.c
index 6bd25f8da605032bfdb97596fb3a1f6a03e88bfc..cec972d5aa9107d4708338bd7349415a31f0e688 100644
--- a/drivers/pci/controller/dwc/pcie-intel-gw.c
+++ b/drivers/pci/controller/dwc/pcie-intel-gw.c
@@ -311,8 +311,6 @@ static int intel_pcie_host_setup(struct intel_pcie *pcie)
 		goto clk_err;
 	}
 
-	pci->atu_base = pci->dbi_base + 0xC0000;
-
 	ret = phy_init(pcie->phy);
 	if (ret)
 		goto phy_err;

-- 
2.47.3


  parent reply	other threads:[~2026-03-17 10:30 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-17 10:12 [PATCH 0/5] PCI: intel-gw: Fixes to make the driver working again Florian Eckert
2026-03-17 10:12 ` [PATCH 1/5] PCI: intel-gw: Move interrupt enable to own function Florian Eckert
2026-03-26 14:00   ` Manivannan Sadhasivam
2026-03-27  8:18     ` Florian Eckert
2026-03-27 10:00       ` Manivannan Sadhasivam
2026-03-17 10:12 ` [PATCH 2/5] PCI: intel-gw: Enable clock before phy init Florian Eckert
2026-03-26 16:08   ` Manivannan Sadhasivam
2026-03-27  7:42     ` Florian Eckert
2026-03-27 10:02       ` Manivannan Sadhasivam
2026-03-17 10:12 ` [PATCH 3/5] PCI: intel-gw: Add start_link callback function Florian Eckert
2026-03-26 16:13   ` Manivannan Sadhasivam
2026-03-17 10:12 ` Florian Eckert [this message]
2026-03-26 16:15   ` [PATCH 4/5] PCI: intel-gw: Remove atu base assignment Manivannan Sadhasivam
2026-03-27 11:44     ` Florian Eckert
2026-03-30  7:14       ` Manivannan Sadhasivam
2026-03-17 10:12 ` [PATCH 5/5] PCI: intel-gw: Remove unused define Florian Eckert

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