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[PATCH v4 0/3] arm64: Juno: Add support for PCIe on R1 board

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  [PATCH v4 0/3] arm64: Juno: Add support for PCIe on R1 board Liviu Dudau <Liviu.Dudau@arm.com> - 2015-10-16 17:40 +0200
    [PATCH v4 2/3] arm64: Juno: Add support for the PCIe host bridge on Juno R1 Liviu Dudau <Liviu.Dudau@arm.com> - 2015-10-16 17:40 +0200
    [PATCH v4 3/3] arm64: defconfig: Enable PCI generic host bridge by default Liviu Dudau <Liviu.Dudau@arm.com> - 2015-10-16 17:40 +0200

#1248903 — [PATCH v4 0/3] arm64: Juno: Add support for PCIe on R1 board

Changes in v4 vs v3:
 - Dropped the quirks patches as the fixup can be done in firmware.
Changes in v3 vs v2:
 - Add Documentation files describing the DT bindings for plda,xpressrich3-axi
   and arm,juno-r1-pcie properties.
 - Cosmetic changes in the .dts to bracket range and interrupt-map entries
   individually.
Changes in v2 vs v1:
 - Add plda as OF vendor prefix
 - Add more specific compatible values to the Juno R1 DT
 

Juno R1 board has a working PCIe host bridge that can be enabled and
configured by the firmware and made use of by Linux. For UEFI, the
Linaro releases contain firmware that configure the XpressRICH3 host
bridge correctly. For U-Boot based setups, one needs the patchset
posted here[1].

This patchset adds a quirk for setting the correct class to the host
bridge device and the device tree changes that enable PCIe on Juno R1.
We also update the defconfig to enable the generic PCI host bridge driver.

The changes can also available in the git repository at:

  git://linux-arm.org/linux-ld.git for-upstream/juno-pcie

They are based on v4.3-rc5.

Catalin, Will: This series has got Mark's ACKs for the DT changes and
now with the quirks dropped it can be pulled into whatever arm64 -next
branch you want to prepare. Do you want a formal pull request for this?

Best regards,
Liviu

1. http://lists.denx.de/pipermail/u-boot/2015-October/229669.html

Liviu Dudau (3):
  Documentation: of: Document the bindings used by Juno R1 PCIe host bridge
  arm64: Juno: Add support for the PCIe host bridge on Juno R1
  arm64: defconfig: Enable PCI generic host bridge by default

 .../devicetree/bindings/pci/arm,juno-r1-pcie.txt     | 10 ++++++++++
 .../devicetree/bindings/pci/plda,xpressrich3-axi.txt | 12 ++++++++++++
 .../devicetree/bindings/vendor-prefixes.txt          |  1 +
 arch/arm64/boot/dts/arm/juno-r1.dts                  | 20 ++++++++++++++++++++
 arch/arm64/configs/defconfig                         |  1 +
 5 files changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/arm,juno-r1-pcie.txt
 create mode 100644 Documentation/devicetree/bindings/pci/plda,xpressrich3-axi.txt

-- 
2.6.0

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#1248907 — [PATCH v4 2/3] arm64: Juno: Add support for the PCIe host bridge on Juno R1

Juno R1 board sports a functional PCIe host bridge that is
compliant with the SBSA standard found [1] here. With the right
firmware that initialises the XpressRICH3 controller one can
use the generic Host Bridge driver to use the PCIe hardware.

Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>

[1] http://infocenter.arm.com/help/topic/com.arm.doc.den0029a/
---
 arch/arm64/boot/dts/arm/juno-r1.dts | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/arm/juno-r1.dts b/arch/arm64/boot/dts/arm/juno-r1.dts
index c627511..a25964d 100644
--- a/arch/arm64/boot/dts/arm/juno-r1.dts
+++ b/arch/arm64/boot/dts/arm/juno-r1.dts
@@ -109,6 +109,26 @@
 
 	#include "juno-base.dtsi"
 
+	pcie-controller@40000000 {
+		compatible = "arm,juno-r1-pcie", "plda,xpressrich3-axi", "pci-host-ecam-generic";
+		device_type = "pci";
+		reg = <0 0x40000000 0 0x10000000>;	/* ECAM config space */
+		bus-range = <0 255>;
+		linux,pci-domain = <0>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+		dma-coherent;
+		ranges = <0x01000000 0x00 0x5f800000 0x00 0x5f800000 0x0 0x00800000>,
+			 <0x02000000 0x00 0x50000000 0x00 0x50000000 0x0 0x08000000>,
+			 <0x42000000 0x40 0x00000000 0x40 0x00000000 0x1 0x00000000>;
+		#interrupt-cells = <1>;
+		interrupt-map-mask = <0 0 0 7>;
+		interrupt-map = <0 0 0 1 &gic 0 0 0 136 4>,
+				<0 0 0 2 &gic 0 0 0 137 4>,
+				<0 0 0 3 &gic 0 0 0 138 4>,
+				<0 0 0 4 &gic 0 0 0 139 4>;
+		msi-parent = <&v2m_0>;
+	};
 };
 
 &memtimer {
-- 
2.6.0

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#1248909 — [PATCH v4 3/3] arm64: defconfig: Enable PCI generic host bridge by default

Now that pci-host-generic can be used under arm64, enable it by
default so that SBSA compliant systems can use it.

Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 34d71dd..7c9455a 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -49,6 +49,7 @@ CONFIG_ARCH_XGENE=y
 CONFIG_ARCH_ZYNQMP=y
 CONFIG_PCI=y
 CONFIG_PCI_MSI=y
+CONFIG_PCI_HOST_GENERIC=y
 CONFIG_PCI_XGENE=y
 CONFIG_SMP=y
 CONFIG_PREEMPT=y
-- 
2.6.0

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