brcm2708: update to latest patches from RPi Foundation

[openwrt/staging/chunkeey.git] / target / linux / brcm2708 / patches-4.19 / 950-0461-dt-bindings-pci-Add-DT-docs-for-Brcmstb-PCIe-device.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0461-dt-bindings-pci-Add-DT-docs-for-Brcmstb-PCIe-device.patch b/target/linux/brcm2708/patches-4.19/950-0461-dt-bindings-pci-Add-DT-docs-for-Brcmstb-PCIe-device.patch
new file mode 100644 (file)
index 0000000..632e986
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0461-dt-bindings-pci-Add-DT-docs-for-Brcmstb-PCIe-device.patch
@@ -0,0 +1,77 @@
+From cb1acabb459677efbf95c54ce1dc5252be30a018 Mon Sep 17 00:00:00 2001
+From: Jim Quinlan <jim2101024@gmail.com>
+Date: Mon, 15 Jan 2018 18:28:39 -0500
+Subject: [PATCH] dt-bindings: pci: Add DT docs for Brcmstb PCIe device
+
+The DT bindings description of the Brcmstb PCIe device is described.  This
+node can be used by almost all Broadcom settop box chips, using
+ARM, ARM64, or MIPS CPU architectures.
+
+Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
+---
+ .../devicetree/bindings/pci/brcmstb-pcie.txt  | 59 +++++++++++++++++++
+ 1 file changed, 59 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/pci/brcmstb-pcie.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/pci/brcmstb-pcie.txt
+@@ -0,0 +1,59 @@
++Brcmstb PCIe Host Controller Device Tree Bindings
++
++Required Properties:
++- compatible
++  "brcm,bcm7425-pcie" -- for 7425 family MIPS-based SOCs.
++  "brcm,bcm7435-pcie" -- for 7435 family MIPS-based SOCs.
++  "brcm,bcm7445-pcie" -- for 7445 and later ARM based SOCs (not including
++      the 7278).
++  "brcm,bcm7278-pcie"  -- for 7278 family ARM-based SOCs.
++
++- reg -- the register start address and length for the PCIe reg block.
++- interrupts -- two interrupts are specified; the first interrupt is for
++     the PCI host controller and the second is for MSI if the built-in
++     MSI controller is to be used.
++- interrupt-names -- names of the interrupts (above): "pcie" and "msi".
++- #address-cells -- set to <3>.
++- #size-cells -- set to <2>.
++- #interrupt-cells: set to <1>.
++- interrupt-map-mask and interrupt-map, standard PCI properties to define the
++     mapping of the PCIe interface to interrupt numbers.
++- ranges: ranges for the PCI memory and I/O regions.
++- linux,pci-domain -- should be unique per host controller.
++
++Optional Properties:
++- clocks -- phandle of pcie clock.
++- clock-names -- set to "sw_pcie" if clocks is used.
++- dma-ranges -- Specifies the inbound memory mapping regions when
++     an "identity map" is not possible.
++- msi-controller -- this property is typically specified to have the
++     PCIe controller use its internal MSI controller.
++- msi-parent -- set to use an external MSI interrupt controller.
++- brcm,enable-ssc -- (boolean) indicates usage of spread-spectrum clocking.
++- max-link-speed --  (integer) indicates desired generation of link:
++     1 => 2.5 Gbps (gen1), 2 => 5.0 Gbps (gen2), 3 => 8.0 Gbps (gen3).
++
++Example Node:
++
++pcie0: pcie@f0460000 {
++              reg = <0x0 0xf0460000 0x0 0x9310>;
++              interrupts = <0x0 0x0 0x4>;
++              compatible = "brcm,bcm7445-pcie";
++              #address-cells = <3>;
++              #size-cells = <2>;
++              ranges = <0x02000000 0x00000000 0x00000000 0x00000000 0xc0000000 0x00000000 0x08000000
++                        0x02000000 0x00000000 0x08000000 0x00000000 0xc8000000 0x00000000 0x08000000>;
++              #interrupt-cells = <1>;
++              interrupt-map-mask = <0 0 0 7>;
++              interrupt-map = <0 0 0 1 &intc 0 47 3
++                               0 0 0 2 &intc 0 48 3
++                               0 0 0 3 &intc 0 49 3
++                               0 0 0 4 &intc 0 50 3>;
++              clocks = <&sw_pcie0>;
++              clock-names = "sw_pcie";
++              msi-parent = <&pcie0>;  /* use PCIe's internal MSI controller */
++              msi-controller;         /* use PCIe's internal MSI controller */
++              brcm,ssc;
++              max-link-speed = <1>;
++              linux,pci-domain = <0>;
++      };