linux-kernel - [PATCH v4 1/6] Revert "ARM: dts: imx7d: Invert legacy PCI irq mapping"

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Date:   Tue, 14 Aug 2018 19:50:15 +0300
From:   Leonard Crestez <leonard.crestez@....com>
To:     Shawn Guo <shawnguo@...nel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Lucas Stach <l.stach@...gutronix.de>
Cc:     Andrey Smirnov <andrew.smirnov@...il.com>,
        Richard Zhu <hongxing.zhu@....com>,
        Anson Huang <Anson.Huang@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        linux-pci@...r.kernel.org, linux-imx@....com,
        kernel@...gutronix.de, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Subject: [PATCH v4 1/6] Revert "ARM: dts: imx7d: Invert legacy PCI irq mapping"

This reverts commit 1c86c9dd82f859b474474a7fee0d5195da2c9c1d.

That commit followed the reference manual but unfortunately the imx7d
manual is incorrect.

Tested with ath9k pcie card and confirmed internally.

Signed-off-by: Leonard Crestez <leonard.crestez@....com>
Acked-by: Lucas Stach <l.stach@...gutronix.de>
---
 arch/arm/boot/dts/imx7d.dtsi | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/imx7d.dtsi b/arch/arm/boot/dts/imx7d.dtsi
index 7cbc2ffa4b3a..7234e8330a57 100644
--- a/arch/arm/boot/dts/imx7d.dtsi
+++ b/arch/arm/boot/dts/imx7d.dtsi
@@ -124,14 +124,18 @@
 		num-lanes = <1>;
 		interrupts = <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>;
 		interrupt-names = "msi";
 		#interrupt-cells = <1>;
 		interrupt-map-mask = <0 0 0 0x7>;
-		interrupt-map = <0 0 0 1 &intc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
-				<0 0 0 2 &intc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
-				<0 0 0 3 &intc GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
-				<0 0 0 4 &intc GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>;
+		/*
+		 * Reference manual lists pci irqs incorrectly
+		 * Real hardware ordering is same as imx6: D+MSI, C, B, A
+		 */
+		interrupt-map = <0 0 0 1 &intc GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
+				<0 0 0 2 &intc GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
+				<0 0 0 3 &intc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
+				<0 0 0 4 &intc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&clks IMX7D_PCIE_CTRL_ROOT_CLK>,
 			 <&clks IMX7D_PLL_ENET_MAIN_100M_CLK>,
 			 <&clks IMX7D_PCIE_PHY_ROOT_CLK>;
 		clock-names = "pcie", "pcie_bus", "pcie_phy";
 		assigned-clocks = <&clks IMX7D_PCIE_CTRL_ROOT_SRC>,
-- 
2.17.1