[PATCH v4 0/4] Split PCIe node to comply with hardware design

[PATCH v4 0/4] Split PCIe node to comply with hardware design

[chuanjia.liu]

There are two independent PCIe controllers in MT2712 and MT7622
platform, and each of them should contain an independent MSI
domain.

In current architecture, MSI domain will be inherited from the
root bridge, and all of the devices will share the same MSI domain.
Hence that, the PCIe devices will not work properly if the irq
number which required is more than 32.

Split the PCIe node for MT2712 and MT7622 platform to fix MSI
issue and comply with the hardware design.

change note:
  v4:change commit message due to bayes statistical bogofilter
     considers this series patch SPAM.
  v3:rebase for 5.8-rc1. Only collect ack of Ryder, No code change.
  v2:change the allocation of MT2712 PCIe MMIO space due to the
     allocation size is not right in v1.

chuanjia.liu (4):
  dt-bindings: pci: mediatek: Modified the Device tree bindings
  PCI: mediatek: Use regmap to get shared pcie-cfg base
  arm64: dts: mediatek: Split PCIe node for MT2712 and MT7622
  ARM: dts: mediatek: Modified MT7629 PCIe node

 .../bindings/pci/mediatek-pcie-cfg.yaml       |  38 +++++
 .../devicetree/bindings/pci/mediatek-pcie.txt | 144 +++++++++++-------
 arch/arm/boot/dts/mt7629-rfb.dts              |   3 +-
 arch/arm/boot/dts/mt7629.dtsi                 |  23 +--
 arch/arm64/boot/dts/mediatek/mt2712e.dtsi     |  75 +++++----
 .../dts/mediatek/mt7622-bananapi-bpi-r64.dts  |  16 +-
 arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts  |   6 +-
 arch/arm64/boot/dts/mediatek/mt7622.dtsi      |  68 ++++++---
 drivers/pci/controller/pcie-mediatek.c        |  25 ++-
 9 files changed, 258 insertions(+), 140 deletions(-)
 create mode 100644 .../bindings/pci/mediatek-pcie-cfg.yaml

-- 
2.18.0

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[PATCH v4 1/4] dt-bindings: pci: mediatek: Modified the Device tree bindings

[chuanjia.liu]

Split the PCIe node and add pciecfg node to fix MSI issue.

Acked-by:Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: chuanjia.liu <Chuanjia.Liu@mediatek.com>
---
 .../bindings/pci/mediatek-pcie-cfg.yaml       |  38 +++++
 .../devicetree/bindings/pci/mediatek-pcie.txt | 144 +++++++++++-------
 2 files changed, 129 insertions(+), 53 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/pci/mediatek-pcie-cfg.yaml

diff --git a/Documentation/devicetree/bindings/pci/mediatek-pcie-cfg.yaml b/Documentation/devicetree/bindings/pci/mediatek-pcie-cfg.yaml
new file mode 100644
index 000000000000..4d2835ab4858
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/mediatek-pcie-cfg.yaml
@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/mediatek-pcie-cfg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek PCIECFG controller
+
+maintainers:
+  - Chuanjia Liu <chuanjia.liu@mediatek.com>
+  - Jianjun Wang <jianjun.wang@mediatek.com>
+
+description: |
+  The MediaTek PCIECFG controller controls some feature about
+  LTSSM, ASPM and so on.
+
+properties:
+  compatible:
+      items:
+        - enum:
+            - mediatek,mt7622-pciecfg
+            - mediatek,mt7629-pciecfg
+        - const: syscon
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    pciecfg: pciecfg@1a140000 {
+        compatible = "mediatek,mt7622-pciecfg", "syscon";
+        reg = <0 0x1a140000 0 0x1000>;
+    };
+...
diff --git a/Documentation/devicetree/bindings/pci/mediatek-pcie.txt b/Documentation/devicetree/bindings/pci/mediatek-pcie.txt
index 7468d666763a..31e261933685 100644
--- a/Documentation/devicetree/bindings/pci/mediatek-pcie.txt
+++ b/Documentation/devicetree/bindings/pci/mediatek-pcie.txt
@@ -8,7 +8,7 @@ Required properties:
 	"mediatek,mt7623-pcie"
 	"mediatek,mt7629-pcie"
 - device_type: Must be "pci"
-- reg: Base addresses and lengths of the PCIe subsys and root ports.
+- reg: Base addresses and lengths of the root ports.
 - reg-names: Names of the above areas to use during resource lookup.
 - #address-cells: Address representation for root ports (must be 3)
 - #size-cells: Size representation for root ports (must be 2)
@@ -19,10 +19,10 @@ Required properties:
    - sys_ckN :transaction layer and data link layer clock
   Required entries for MT2701/MT7623:
    - free_ck :for reference clock of PCIe subsys
-  Required entries for MT2712/MT7622:
+  Required entries for MT2712/MT7622/MT7629:
    - ahb_ckN :AHB slave interface operating clock for CSR access and RC
 	      initiated MMIO access
-  Required entries for MT7622:
+  Required entries for MT7622/MT7629:
    - axi_ckN :application layer MMIO channel operating clock
    - aux_ckN :pe2_mac_bridge and pe2_mac_core operating clock when
 	      pcie_mac_ck/pcie_pipe_ck is turned off
@@ -47,10 +47,13 @@ Required properties for MT7623/MT2701:
 - reset-names: Must be "pcie-rst0", "pcie-rst1", "pcie-rstN".. based on the
   number of root ports.
 
-Required properties for MT2712/MT7622:
+Required properties for MT2712/MT7622/MT7629:
 -interrupts: A list of interrupt outputs of the controller, must have one
 	     entry for each PCIe port
 
+Required properties for MT7622/MT7629:
+- mediatek,pcie-subsys: Should be a phandle of the pciecfg node.
+
 In addition, the device tree node must have sub-nodes describing each
 PCIe port interface, having the following mandatory properties:
 
@@ -143,56 +146,73 @@ Examples for MT7623:
 
 Examples for MT2712:
 
-	pcie: pcie@11700000 {
+	pcie1: pcie@112ff000 {
 		compatible = "mediatek,mt2712-pcie";
 		device_type = "pci";
-		reg = <0 0x11700000 0 0x1000>,
-		      <0 0x112ff000 0 0x1000>;
-		reg-names = "port0", "port1";
+		reg = <0 0x112ff000 0 0x1000>;
+		reg-names = "port1";
 		#address-cells = <3>;
 		#size-cells = <2>;
-		interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&topckgen CLK_TOP_PE2_MAC_P0_SEL>,
-			 <&topckgen CLK_TOP_PE2_MAC_P1_SEL>,
-			 <&pericfg CLK_PERI_PCIE0>,
+		interrupts = <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "pcie_irq";
+		clocks = <&topckgen CLK_TOP_PE2_MAC_P1_SEL>,
 			 <&pericfg CLK_PERI_PCIE1>;
-		clock-names = "sys_ck0", "sys_ck1", "ahb_ck0", "ahb_ck1";
-		phys = <&pcie0_phy PHY_TYPE_PCIE>, <&pcie1_phy PHY_TYPE_PCIE>;
-		phy-names = "pcie-phy0", "pcie-phy1";
+		clock-names = "sys_ck1", "ahb_ck1";
+		phys = <&u3port1 PHY_TYPE_PCIE>;
+		phy-names = "pcie-phy1";
 		bus-range = <0x00 0xff>;
-		ranges = <0x82000000 0 0x20000000  0x0 0x20000000  0 0x10000000>;
+		ranges = <0x82000000 0 0x11400000  0x0 0x11400000  0 0x300000>;
+		status = "disabled";
 
-		pcie0: pcie@0,0 {
-			reg = <0x0000 0 0 0 0>;
+		slot1: pcie@1,0 {
+			reg = <0x0800 0 0 0 0>;
 			#address-cells = <3>;
 			#size-cells = <2>;
 			#interrupt-cells = <1>;
 			ranges;
 			interrupt-map-mask = <0 0 0 7>;
-			interrupt-map = <0 0 0 1 &pcie_intc0 0>,
-					<0 0 0 2 &pcie_intc0 1>,
-					<0 0 0 3 &pcie_intc0 2>,
-					<0 0 0 4 &pcie_intc0 3>;
-			pcie_intc0: interrupt-controller {
+			interrupt-map = <0 0 0 1 &pcie_intc1 0>,
+					<0 0 0 2 &pcie_intc1 1>,
+					<0 0 0 3 &pcie_intc1 2>,
+					<0 0 0 4 &pcie_intc1 3>;
+			pcie_intc1: interrupt-controller {
 				interrupt-controller;
 				#address-cells = <0>;
 				#interrupt-cells = <1>;
 			};
 		};
+	};
 
-		pcie1: pcie@1,0 {
-			reg = <0x0800 0 0 0 0>;
+	pcie0: pcie@11700000 {
+		compatible = "mediatek,mt2712-pcie";
+		device_type = "pci";
+		reg = <0 0x11700000 0 0x1000>;
+		reg-names = "port0";
+		#address-cells = <3>;
+		#size-cells = <2>;
+		interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "pcie_irq";
+		clocks = <&topckgen CLK_TOP_PE2_MAC_P0_SEL>,
+			 <&pericfg CLK_PERI_PCIE0>;
+		clock-names = "sys_ck0", "ahb_ck0";
+		phys = <&u3port0 PHY_TYPE_PCIE>;
+		phy-names = "pcie-phy0";
+		bus-range = <0x00 0xff>;
+		ranges = <0x82000000 0 0x20000000 0x0 0x20000000 0 0x10000000>;
+		status = "disabled";
+
+		slot0: pcie@0,0 {
+			reg = <0x0000 0 0 0 0>;
 			#address-cells = <3>;
 			#size-cells = <2>;
 			#interrupt-cells = <1>;
 			ranges;
 			interrupt-map-mask = <0 0 0 7>;
-			interrupt-map = <0 0 0 1 &pcie_intc1 0>,
-					<0 0 0 2 &pcie_intc1 1>,
-					<0 0 0 3 &pcie_intc1 2>,
-					<0 0 0 4 &pcie_intc1 3>;
-			pcie_intc1: interrupt-controller {
+			interrupt-map = <0 0 0 1 &pcie_intc0 0>,
+					<0 0 0 2 &pcie_intc0 1>,
+					<0 0 0 3 &pcie_intc0 2>,
+					<0 0 0 4 &pcie_intc0 3>;
+			pcie_intc0: interrupt-controller {
 				interrupt-controller;
 				#address-cells = <0>;
 				#interrupt-cells = <1>;
@@ -202,39 +222,31 @@ Examples for MT2712:
 
 Examples for MT7622:
 
-	pcie: pcie@1a140000 {
+	pcie0: pcie@1a143000 {
 		compatible = "mediatek,mt7622-pcie";
 		device_type = "pci";
-		reg = <0 0x1a140000 0 0x1000>,
-		      <0 0x1a143000 0 0x1000>,
-		      <0 0x1a145000 0 0x1000>;
-		reg-names = "subsys", "port0", "port1";
+		reg = <0 0x1a143000 0 0x1000>;
+		reg-names = "port0";
+		mediatek,pcie-cfg = <&pciecfg>;
 		#address-cells = <3>;
 		#size-cells = <2>;
-		interrupts = <GIC_SPI 228 IRQ_TYPE_LEVEL_LOW>,
-			     <GIC_SPI 229 IRQ_TYPE_LEVEL_LOW>;
+		interrupts = <GIC_SPI 228 IRQ_TYPE_LEVEL_LOW>;
+		interrupt-names = "pcie_irq";
 		clocks = <&pciesys CLK_PCIE_P0_MAC_EN>,
-			 <&pciesys CLK_PCIE_P1_MAC_EN>,
 			 <&pciesys CLK_PCIE_P0_AHB_EN>,
-			 <&pciesys CLK_PCIE_P1_AHB_EN>,
 			 <&pciesys CLK_PCIE_P0_AUX_EN>,
-			 <&pciesys CLK_PCIE_P1_AUX_EN>,
 			 <&pciesys CLK_PCIE_P0_AXI_EN>,
-			 <&pciesys CLK_PCIE_P1_AXI_EN>,
 			 <&pciesys CLK_PCIE_P0_OBFF_EN>,
-			 <&pciesys CLK_PCIE_P1_OBFF_EN>,
-			 <&pciesys CLK_PCIE_P0_PIPE_EN>,
-			 <&pciesys CLK_PCIE_P1_PIPE_EN>;
-		clock-names = "sys_ck0", "sys_ck1", "ahb_ck0", "ahb_ck1",
-			      "aux_ck0", "aux_ck1", "axi_ck0", "axi_ck1",
-			      "obff_ck0", "obff_ck1", "pipe_ck0", "pipe_ck1";
-		phys = <&pcie0_phy PHY_TYPE_PCIE>, <&pcie1_phy PHY_TYPE_PCIE>;
-		phy-names = "pcie-phy0", "pcie-phy1";
+			 <&pciesys CLK_PCIE_P0_PIPE_EN>;
+		clock-names = "sys_ck0", "ahb_ck0", "aux_ck0",
+			      "axi_ck0", "obff_ck0", "pipe_ck0";
+
 		power-domains = <&scpsys MT7622_POWER_DOMAIN_HIF0>;
 		bus-range = <0x00 0xff>;
-		ranges = <0x82000000 0 0x20000000  0x0 0x20000000  0 0x10000000>;
+		ranges = <0x82000000 0 0x20000000  0x0 0x20000000  0 0x8000000>;
+		status = "disabled";
 
-		pcie0: pcie@0,0 {
+		slot0: pcie@0,0 {
 			reg = <0x0000 0 0 0 0>;
 			#address-cells = <3>;
 			#size-cells = <2>;
@@ -251,8 +263,34 @@ Examples for MT7622:
 				#interrupt-cells = <1>;
 			};
 		};
+	};
+
+	pcie1: pcie@1a145000 {
+		compatible = "mediatek,mt7622-pcie";
+		device_type = "pci";
+		reg = <0 0x1a145000 0 0x1000>;
+		reg-names = "port1";
+		mediatek,pcie-cfg = <&pciecfg>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+		interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_LOW>;
+		interrupt-names = "pcie_irq";
+		clocks = <&pciesys CLK_PCIE_P1_MAC_EN>,
+			 /* designer has connect RC1 with p0_ahb clock */
+			 <&pciesys CLK_PCIE_P0_AHB_EN>,
+			 <&pciesys CLK_PCIE_P1_AUX_EN>,
+			 <&pciesys CLK_PCIE_P1_AXI_EN>,
+			 <&pciesys CLK_PCIE_P1_OBFF_EN>,
+			 <&pciesys CLK_PCIE_P1_PIPE_EN>;
+		clock-names = "sys_ck1", "ahb_ck1", "aux_ck1",
+			      "axi_ck1", "obff_ck1", "pipe_ck1";
+
+		power-domains = <&scpsys MT7622_POWER_DOMAIN_HIF0>;
+		bus-range = <0x00 0xff>;
+		ranges = <0x82000000 0 0x28000000  0x0 0x28000000  0 0x8000000>;
+		status = "disabled";
 
-		pcie1: pcie@1,0 {
+		slot1: pcie@1,0 {
 			reg = <0x0800 0 0 0 0>;
 			#address-cells = <3>;
 			#size-cells = <2>;
-- 
2.18.0
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[PATCH v4 2/4] PCI: mediatek: Use regmap to get shared pcie-cfg base

[chuanjia.liu]

Use regmap to get shared pcie-cfg base and change
the method to get pcie irq.

Acked-by:Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: chuanjia.liu <Chuanjia.Liu@mediatek.com>
---
 drivers/pci/controller/pcie-mediatek.c | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c
index ebfa7d5a4e2d..659ff9a685b0 100644
--- a/drivers/pci/controller/pcie-mediatek.c
+++ b/drivers/pci/controller/pcie-mediatek.c
@@ -14,6 +14,7 @@
 #include <linux/irqchip/chained_irq.h>
 #include <linux/irqdomain.h>
 #include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
 #include <linux/msi.h>
 #include <linux/module.h>
 #include <linux/of_address.h>
@@ -23,6 +24,7 @@
 #include <linux/phy/phy.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/regmap.h>
 #include <linux/reset.h>
 
 #include "../pci.h"
@@ -205,6 +207,7 @@ struct mtk_pcie_port {
  * struct mtk_pcie - PCIe host information
  * @dev: pointer to PCIe device
  * @base: IO mapped register base
+ * @cfg: IO mapped register map for PCIe config
  * @free_ck: free-run reference clock
  * @mem: non-prefetchable memory resource
  * @ports: pointer to PCIe port information
@@ -214,6 +217,7 @@ struct mtk_pcie_port {
 struct mtk_pcie {
 	struct device *dev;
 	void __iomem *base;
+	struct regmap *cfg;
 	struct clk *free_ck;
 
 	struct list_head ports;
@@ -650,7 +654,7 @@ static int mtk_pcie_setup_irq(struct mtk_pcie_port *port,
 		return err;
 	}
 
-	port->irq = platform_get_irq(pdev, port->slot);
+	port->irq = platform_get_irq_byname(pdev, "pcie_irq");
 	if (port->irq < 0)
 		return port->irq;
 
@@ -676,12 +680,11 @@ static int mtk_pcie_startup_port_v2(struct mtk_pcie_port *port)
 	if (!mem)
 		return -EINVAL;
 
-	/* MT7622 platforms need to enable LTSSM and ASPM from PCIe subsys */
-	if (pcie->base) {
-		val = readl(pcie->base + PCIE_SYS_CFG_V2);
-		val |= PCIE_CSR_LTSSM_EN(port->slot) |
-		       PCIE_CSR_ASPM_L1_EN(port->slot);
-		writel(val, pcie->base + PCIE_SYS_CFG_V2);
+	/* MT7622/MT7629 platforms need to enable LTSSM and ASPM. */
+	if (pcie->cfg) {
+		val = PCIE_CSR_LTSSM_EN(port->slot) |
+		      PCIE_CSR_ASPM_L1_EN(port->slot);
+		regmap_update_bits(pcie->cfg, PCIE_SYS_CFG_V2, val, val);
 	}
 
 	/* Assert all reset signals */
@@ -987,6 +990,7 @@ static int mtk_pcie_subsys_powerup(struct mtk_pcie *pcie)
 	struct device *dev = pcie->dev;
 	struct platform_device *pdev = to_platform_device(dev);
 	struct resource *regs;
+	struct device_node *cfg_node;
 	int err;
 
 	/* get shared registers, which are optional */
@@ -999,6 +1003,13 @@ static int mtk_pcie_subsys_powerup(struct mtk_pcie *pcie)
 		}
 	}
 
+	cfg_node = of_parse_phandle(dev->of_node, "mediatek,pcie-cfg", 0);
+	if (cfg_node) {
+		pcie->cfg = syscon_node_to_regmap(cfg_node);
+		if (IS_ERR(pcie->cfg))
+			return PTR_ERR(pcie->cfg);
+	}
+
 	pcie->free_ck = devm_clk_get(dev, "free_ck");
 	if (IS_ERR(pcie->free_ck)) {
 		if (PTR_ERR(pcie->free_ck) == -EPROBE_DEFER)
-- 
2.18.0
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[PATCH v4 3/4] arm64: dts: mediatek: Split PCIe node for MT2712 and MT7622

[chuanjia.liu]

There are two independent PCIe controllers in MT2712 and MT7622
platform. Split the PCIe node for MT2712 and MT7622 platform to
fix MSI issue and comply with the hardware design.

Acked-by:Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: chuanjia.liu <Chuanjia.Liu@mediatek.com>
---
 arch/arm64/boot/dts/mediatek/mt2712e.dtsi     | 75 +++++++++++--------
 .../dts/mediatek/mt7622-bananapi-bpi-r64.dts  | 16 ++--
 arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts  |  6 +-
 arch/arm64/boot/dts/mediatek/mt7622.dtsi      | 68 +++++++++++------
 4 files changed, 96 insertions(+), 69 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
index db17d0a4ed57..337e56bdbd08 100644
--- a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
@@ -915,60 +915,73 @@
 		};
 	};
 
-	pcie: pcie@11700000 {
+	pcie1: pcie@112ff000 {
 		compatible = "mediatek,mt2712-pcie";
 		device_type = "pci";
-		reg = <0 0x11700000 0 0x1000>,
-		      <0 0x112ff000 0 0x1000>;
-		reg-names = "port0", "port1";
+		reg = <0 0x112ff000 0 0x1000>;
+		reg-names = "port1";
 		#address-cells = <3>;
 		#size-cells = <2>;
-		interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&topckgen CLK_TOP_PE2_MAC_P0_SEL>,
-			 <&topckgen CLK_TOP_PE2_MAC_P1_SEL>,
-			 <&pericfg CLK_PERI_PCIE0>,
+		interrupts = <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "pcie_irq";
+		clocks = <&topckgen CLK_TOP_PE2_MAC_P1_SEL>,
 			 <&pericfg CLK_PERI_PCIE1>;
-		clock-names = "sys_ck0", "sys_ck1", "ahb_ck0", "ahb_ck1";
-		phys = <&u3port0 PHY_TYPE_PCIE>, <&u3port1 PHY_TYPE_PCIE>;
-		phy-names = "pcie-phy0", "pcie-phy1";
+		clock-names = "sys_ck1", "ahb_ck1";
+		phys = <&u3port1 PHY_TYPE_PCIE>;
+		phy-names = "pcie-phy1";
 		bus-range = <0x00 0xff>;
-		ranges = <0x82000000 0 0x20000000  0x0 0x20000000  0 0x10000000>;
+		ranges = <0x82000000 0 0x11400000  0x0 0x11400000  0 0x300000>;
+		status = "disabled";
 
-		pcie0: pcie@0,0 {
-			device_type = "pci";
-			status = "disabled";
-			reg = <0x0000 0 0 0 0>;
+		slot1: pcie@1,0 {
+			reg = <0x0800 0 0 0 0>;
 			#address-cells = <3>;
 			#size-cells = <2>;
 			#interrupt-cells = <1>;
 			ranges;
 			interrupt-map-mask = <0 0 0 7>;
-			interrupt-map = <0 0 0 1 &pcie_intc0 0>,
-					<0 0 0 2 &pcie_intc0 1>,
-					<0 0 0 3 &pcie_intc0 2>,
-					<0 0 0 4 &pcie_intc0 3>;
-			pcie_intc0: interrupt-controller {
+			interrupt-map = <0 0 0 1 &pcie_intc1 0>,
+					<0 0 0 2 &pcie_intc1 1>,
+					<0 0 0 3 &pcie_intc1 2>,
+					<0 0 0 4 &pcie_intc1 3>;
+			pcie_intc1: interrupt-controller {
 				interrupt-controller;
 				#address-cells = <0>;
 				#interrupt-cells = <1>;
 			};
 		};
+	};
 
-		pcie1: pcie@1,0 {
-			device_type = "pci";
-			status = "disabled";
-			reg = <0x0800 0 0 0 0>;
+	pcie0: pcie@11700000 {
+		compatible = "mediatek,mt2712-pcie";
+		device_type = "pci";
+		reg = <0 0x11700000 0 0x1000>;
+		reg-names = "port0";
+		#address-cells = <3>;
+		#size-cells = <2>;
+		interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "pcie_irq";
+		clocks = <&topckgen CLK_TOP_PE2_MAC_P0_SEL>,
+			 <&pericfg CLK_PERI_PCIE0>;
+		clock-names = "sys_ck0", "ahb_ck0";
+		phys = <&u3port0 PHY_TYPE_PCIE>;
+		phy-names = "pcie-phy0";
+		bus-range = <0x00 0xff>;
+		ranges = <0x82000000 0 0x20000000 0x0 0x20000000 0 0x10000000>;
+		status = "disabled";
+
+		slot0: pcie@0,0 {
+			reg = <0x0000 0 0 0 0>;
 			#address-cells = <3>;
 			#size-cells = <2>;
 			#interrupt-cells = <1>;
 			ranges;
 			interrupt-map-mask = <0 0 0 7>;
-			interrupt-map = <0 0 0 1 &pcie_intc1 0>,
-					<0 0 0 2 &pcie_intc1 1>,
-					<0 0 0 3 &pcie_intc1 2>,
-					<0 0 0 4 &pcie_intc1 3>;
-			pcie_intc1: interrupt-controller {
+			interrupt-map = <0 0 0 1 &pcie_intc0 0>,
+					<0 0 0 2 &pcie_intc0 1>,
+					<0 0 0 3 &pcie_intc0 2>,
+					<0 0 0 4 &pcie_intc0 3>;
+			pcie_intc0: interrupt-controller {
 				interrupt-controller;
 				#address-cells = <0>;
 				#interrupt-cells = <1>;
diff --git a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
index d174ad214857..83baab46f060 100644
--- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
@@ -207,18 +207,16 @@
 	};
 };
 
-&pcie {
+&pcie0 {
 	pinctrl-names = "default";
-	pinctrl-0 = <&pcie0_pins>, <&pcie1_pins>;
+	pinctrl-0 = <&pcie0_pins>;
 	status = "okay";
+};
 
-	pcie@0,0 {
-		status = "okay";
-	};
-
-	pcie@1,0 {
-		status = "okay";
-	};
+&pcie1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie1_pins>;
+	status = "okay";
 };
 
 &pio {
diff --git a/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts b/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts
index 0b4de627f96e..8e98b78ba232 100644
--- a/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts
@@ -183,14 +183,10 @@
 	};
 };
 
-&pcie {
+&pcie0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pcie0_pins>;
 	status = "okay";
-
-	pcie@0,0 {
-		status = "okay";
-	};
 };
 
 &pio {
diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
index 1a39e0ef776b..638b9260b215 100644
--- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
@@ -777,45 +777,41 @@
 		#reset-cells = <1>;
 	};
 
-	pcie: pcie@1a140000 {
+	pciecfg: pciecfg@1a140000 {
+		compatible = "mediatek,mt7622-pciecfg", "syscon";
+		reg = <0 0x1a140000 0 0x1000>;
+	};
+
+	pcie0: pcie@1a143000 {
 		compatible = "mediatek,mt7622-pcie";
 		device_type = "pci";
-		reg = <0 0x1a140000 0 0x1000>,
-		      <0 0x1a143000 0 0x1000>,
-		      <0 0x1a145000 0 0x1000>;
-		reg-names = "subsys", "port0", "port1";
+		reg = <0 0x1a143000 0 0x1000>;
+		reg-names = "port0";
+		mediatek,pcie-cfg = <&pciecfg>;
 		#address-cells = <3>;
 		#size-cells = <2>;
-		interrupts = <GIC_SPI 228 IRQ_TYPE_LEVEL_LOW>,
-			     <GIC_SPI 229 IRQ_TYPE_LEVEL_LOW>;
+		interrupts = <GIC_SPI 228 IRQ_TYPE_LEVEL_LOW>;
+		interrupt-names = "pcie_irq";
 		clocks = <&pciesys CLK_PCIE_P0_MAC_EN>,
-			 <&pciesys CLK_PCIE_P1_MAC_EN>,
-			 <&pciesys CLK_PCIE_P0_AHB_EN>,
 			 <&pciesys CLK_PCIE_P0_AHB_EN>,
 			 <&pciesys CLK_PCIE_P0_AUX_EN>,
-			 <&pciesys CLK_PCIE_P1_AUX_EN>,
 			 <&pciesys CLK_PCIE_P0_AXI_EN>,
-			 <&pciesys CLK_PCIE_P1_AXI_EN>,
 			 <&pciesys CLK_PCIE_P0_OBFF_EN>,
-			 <&pciesys CLK_PCIE_P1_OBFF_EN>,
-			 <&pciesys CLK_PCIE_P0_PIPE_EN>,
-			 <&pciesys CLK_PCIE_P1_PIPE_EN>;
-		clock-names = "sys_ck0", "sys_ck1", "ahb_ck0", "ahb_ck1",
-			      "aux_ck0", "aux_ck1", "axi_ck0", "axi_ck1",
-			      "obff_ck0", "obff_ck1", "pipe_ck0", "pipe_ck1";
+			 <&pciesys CLK_PCIE_P0_PIPE_EN>;
+		clock-names = "sys_ck0", "ahb_ck0", "aux_ck0",
+			      "axi_ck0", "obff_ck0", "pipe_ck0";
+
 		power-domains = <&scpsys MT7622_POWER_DOMAIN_HIF0>;
 		bus-range = <0x00 0xff>;
-		ranges = <0x82000000 0 0x20000000 0x0 0x20000000 0 0x10000000>;
+		ranges = <0x82000000 0 0x20000000  0x0 0x20000000  0 0x8000000>;
 		status = "disabled";
 
-		pcie0: pcie@0,0 {
+		slot0: pcie@0,0 {
 			reg = <0x0000 0 0 0 0>;
 			#address-cells = <3>;
 			#size-cells = <2>;
 			#interrupt-cells = <1>;
 			ranges;
-			status = "disabled";
-
 			interrupt-map-mask = <0 0 0 7>;
 			interrupt-map = <0 0 0 1 &pcie_intc0 0>,
 					<0 0 0 2 &pcie_intc0 1>,
@@ -827,15 +823,39 @@
 				#interrupt-cells = <1>;
 			};
 		};
+	};
 
-		pcie1: pcie@1,0 {
+	pcie1: pcie@1a145000 {
+		compatible = "mediatek,mt7622-pcie";
+		device_type = "pci";
+		reg = <0 0x1a145000 0 0x1000>;
+		reg-names = "port1";
+		mediatek,pcie-cfg = <&pciecfg>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+		interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_LOW>;
+		interrupt-names = "pcie_irq";
+		clocks = <&pciesys CLK_PCIE_P1_MAC_EN>,
+			 /* designer has connect RC1 with p0_ahb clock */
+			 <&pciesys CLK_PCIE_P0_AHB_EN>,
+			 <&pciesys CLK_PCIE_P1_AUX_EN>,
+			 <&pciesys CLK_PCIE_P1_AXI_EN>,
+			 <&pciesys CLK_PCIE_P1_OBFF_EN>,
+			 <&pciesys CLK_PCIE_P1_PIPE_EN>;
+		clock-names = "sys_ck1", "ahb_ck1", "aux_ck1",
+			      "axi_ck1", "obff_ck1", "pipe_ck1";
+
+		power-domains = <&scpsys MT7622_POWER_DOMAIN_HIF0>;
+		bus-range = <0x00 0xff>;
+		ranges = <0x82000000 0 0x28000000  0x0 0x28000000  0 0x8000000>;
+		status = "disabled";
+
+		slot1: pcie@1,0 {
 			reg = <0x0800 0 0 0 0>;
 			#address-cells = <3>;
 			#size-cells = <2>;
 			#interrupt-cells = <1>;
 			ranges;
-			status = "disabled";
-
 			interrupt-map-mask = <0 0 0 7>;
 			interrupt-map = <0 0 0 1 &pcie_intc1 0>,
 					<0 0 0 2 &pcie_intc1 1>,
-- 
2.18.0
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[PATCH v4 4/4] ARM: dts: mediatek: Modified MT7629 PCIe node

[chuanjia.liu]

Remove unused property and add pciecfg node.

Acked-by:Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: chuanjia.liu <Chuanjia.Liu@mediatek.com>
---
 arch/arm/boot/dts/mt7629-rfb.dts |  3 ++-
 arch/arm/boot/dts/mt7629.dtsi    | 23 +++++++++++++----------
 2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/arch/arm/boot/dts/mt7629-rfb.dts b/arch/arm/boot/dts/mt7629-rfb.dts
index 9980c10c6e29..eb536cbebd9b 100644
--- a/arch/arm/boot/dts/mt7629-rfb.dts
+++ b/arch/arm/boot/dts/mt7629-rfb.dts
@@ -140,9 +140,10 @@
 	};
 };
 
-&pcie {
+&pcie1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pcie_pins>;
+	status = "okay";
 };
 
 &pciephy1 {
diff --git a/arch/arm/boot/dts/mt7629.dtsi b/arch/arm/boot/dts/mt7629.dtsi
index 5cbb3d244c75..94567307b842 100644
--- a/arch/arm/boot/dts/mt7629.dtsi
+++ b/arch/arm/boot/dts/mt7629.dtsi
@@ -360,16 +360,21 @@
 			#reset-cells = <1>;
 		};
 
-		pcie: pcie@1a140000 {
+		pciecfg: pciecfg@1a140000 {
+			compatible = "mediatek,mt7629-pciecfg", "syscon";
+			reg = <0x1a140000 0x1000>;
+		};
+
+		pcie1: pcie@1a145000 {
 			compatible = "mediatek,mt7629-pcie";
 			device_type = "pci";
-			reg = <0x1a140000 0x1000>,
-			      <0x1a145000 0x1000>;
-			reg-names = "subsys","port1";
+			reg = <0x1a145000 0x1000>;
+			reg-names = "port1";
+			mediatek,pcie-cfg = <&pciecfg>;
 			#address-cells = <3>;
 			#size-cells = <2>;
-			interrupts = <GIC_SPI 176 IRQ_TYPE_LEVEL_LOW>,
-				     <GIC_SPI 229 IRQ_TYPE_LEVEL_LOW>;
+			interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_LOW>;
+			interrupt-names = "pcie_irq";
 			clocks = <&pciesys CLK_PCIE_P1_MAC_EN>,
 				 <&pciesys CLK_PCIE_P0_AHB_EN>,
 				 <&pciesys CLK_PCIE_P1_AUX_EN>,
@@ -390,21 +395,19 @@
 			power-domains = <&scpsys MT7622_POWER_DOMAIN_HIF0>;
 			bus-range = <0x00 0xff>;
 			ranges = <0x82000000 0 0x20000000 0x20000000 0 0x10000000>;
+			status = "disabled";
 
-			pcie1: pcie@1,0 {
-				device_type = "pci";
+			slot1: pcie@1,0 {
 				reg = <0x0800 0 0 0 0>;
 				#address-cells = <3>;
 				#size-cells = <2>;
 				#interrupt-cells = <1>;
 				ranges;
-				num-lanes = <1>;
 				interrupt-map-mask = <0 0 0 7>;
 				interrupt-map = <0 0 0 1 &pcie_intc1 0>,
 						<0 0 0 2 &pcie_intc1 1>,
 						<0 0 0 3 &pcie_intc1 2>,
 						<0 0 0 4 &pcie_intc1 3>;
-
 				pcie_intc1: interrupt-controller {
 					interrupt-controller;
 					#address-cells = <0>;
-- 
2.18.0
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Re: [PATCH v4 0/4] Split PCIe node to comply with hardware design

[Chuanjia Liu]

On Tue, 2020-07-21 at 15:49 +0800, chuanjia.liu wrote:
> There are two independent PCIe controllers in MT2712 and MT7622
> platform, and each of them should contain an independent MSI
> domain.
> 
> In current architecture, MSI domain will be inherited from the
> root bridge, and all of the devices will share the same MSI domain.
> Hence that, the PCIe devices will not work properly if the irq
> number which required is more than 32.
> 
> Split the PCIe node for MT2712 and MT7622 platform to fix MSI
> issue and comply with the hardware design.


Hi Lorenzo,

       gentle ping for this patchset.


       BTW. I don't see it in [1],but is ok in [2], I don't know why.

[1]https://lore.kernel.org/linux-pci/
[2]https://lore.kernel.org/linux-arm-kernel/20200721074915.14516-1-Chuanjia.Liu@mediatek.com/

Best Regards,
Chuanjia

> 
> change note:
>   v4:change commit message due to bayes statistical bogofilter
>      considers this series patch SPAM.
>   v3:rebase for 5.8-rc1. Only collect ack of Ryder, No code change.
>   v2:change the allocation of MT2712 PCIe MMIO space due to the
>      allocation size is not right in v1.
> 
> chuanjia.liu (4):
>   dt-bindings: pci: mediatek: Modified the Device tree bindings
>   PCI: mediatek: Use regmap to get shared pcie-cfg base
>   arm64: dts: mediatek: Split PCIe node for MT2712 and MT7622
>   ARM: dts: mediatek: Modified MT7629 PCIe node
> 
>  .../bindings/pci/mediatek-pcie-cfg.yaml       |  38 +++++
>  .../devicetree/bindings/pci/mediatek-pcie.txt | 144 +++++++++++-------
>  arch/arm/boot/dts/mt7629-rfb.dts              |   3 +-
>  arch/arm/boot/dts/mt7629.dtsi                 |  23 +--
>  arch/arm64/boot/dts/mediatek/mt2712e.dtsi     |  75 +++++----
>  .../dts/mediatek/mt7622-bananapi-bpi-r64.dts  |  16 +-
>  arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts  |   6 +-
>  arch/arm64/boot/dts/mediatek/mt7622.dtsi      |  68 ++++++---
>  drivers/pci/controller/pcie-mediatek.c        |  25 ++-
>  9 files changed, 258 insertions(+), 140 deletions(-)
>  create mode 100644 .../bindings/pci/mediatek-pcie-cfg.yaml
> 

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Aw: Re: [PATCH v4 0/4] Split PCIe node to comply with hardware design

[Frank Wunderlich]

Hi,

i don't see this Patchset in 5.9-rc4

is anything missing?

regards Frank

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