linux-kernel - [PATCH 2/3] arm64: dts: amlogic: Fix the register name of the 'DBI' region

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Message-Id: <20251031-pci-meson-fix-v1-2-ed29ee5b54f9@oss.qualcomm.com>
Date: Fri, 31 Oct 2025 23:13:00 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>
To: Bjorn Helgaas <bhelgaas@...gle.com>, 
 Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Krzysztof Wilczyński <kwilczynski@...nel.org>, 
 Manivannan Sadhasivam <mani@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Hanjie Lin <hanjie.lin@...ogic.com>, Yue Wang <yue.wang@...ogic.com>, 
 Kevin Hilman <khilman@...libre.com>, Jerome Brunet <jbrunet@...libre.com>, 
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>, 
 Andrew Murray <amurray@...goodpenguin.co.uk>, 
 Jingoo Han <jingoohan1@...il.com>, 
 Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
Cc: linux-pci@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-amlogic@...ts.infradead.org, 
 Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>, 
 stable+noautosel@...nel.org
Subject: [PATCH 2/3] arm64: dts: amlogic: Fix the register name of the
 'DBI' region

DT incorrectly specifies the 'DBI' region as 'ELBI'. DBI is a must have
region for DWC controllers as it has the Root Port and controller specific
registers, while ELBI has optional registers.

Hence, fix the DT for both Meson platforms.

Cc: stable+noautosel@...nel.org # Driver dependency
Fixes: 5b3a9c20926e ("arm64: dts: meson-axg: add PCIe nodes")
Fixes: 1f8607d59763 ("arm64: dts: meson-g12a: Add PCIe node")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>
---
 arch/arm64/boot/dts/amlogic/meson-axg.dtsi        | 4 ++--
 arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
index 04fb130ac7c6a498f7e8029aeaa7e511cbfe815d..e95c91894968b2c8b3b8e96a5f5e85cd60f3e085 100644
--- a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
@@ -208,7 +208,7 @@ pcieA: pcie@...00000 {
 			reg = <0x0 0xf9800000 0x0 0x400000>,
 			      <0x0 0xff646000 0x0 0x2000>,
 			      <0x0 0xf9f00000 0x0 0x100000>;
-			reg-names = "elbi", "cfg", "config";
+			reg-names = "dbi", "cfg", "config";
 			interrupts = <GIC_SPI 177 IRQ_TYPE_EDGE_RISING>;
 			#interrupt-cells = <1>;
 			interrupt-map-mask = <0 0 0 0>;
@@ -234,7 +234,7 @@ pcieB: pcie@...00000 {
 			reg = <0x0 0xfa000000 0x0 0x400000>,
 			      <0x0 0xff648000 0x0 0x2000>,
 			      <0x0 0xfa400000 0x0 0x100000>;
-			reg-names = "elbi", "cfg", "config";
+			reg-names = "dbi", "cfg", "config";
 			interrupts = <GIC_SPI 167 IRQ_TYPE_EDGE_RISING>;
 			#interrupt-cells = <1>;
 			interrupt-map-mask = <0 0 0 0>;
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
index dcc927a9da80246da43391f9f90049c3570f10d2..ca455f634834b5a52db8ff4e6ebca35a87ea17b7 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
@@ -138,7 +138,7 @@ pcie: pcie@...00000 {
 			reg = <0x0 0xfc000000 0x0 0x400000>,
 			      <0x0 0xff648000 0x0 0x2000>,
 			      <0x0 0xfc400000 0x0 0x200000>;
-			reg-names = "elbi", "cfg", "config";
+			reg-names = "dbi", "cfg", "config";
 			interrupts = <GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>;
 			#interrupt-cells = <1>;
 			interrupt-map-mask = <0 0 0 0>;

-- 
2.48.1