50 lines
1.6 KiB
Diff
50 lines
1.6 KiB
Diff
From 8d0afa1a93be2da954c85392bbc7b2264c9d241c Mon Sep 17 00:00:00 2001
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From: Ray Jui <rjui@broadcom.com>
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Date: Tue, 15 Sep 2015 17:39:20 -0700
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Subject: [PATCH 6/7] PCI: iproc: Update PCIe device tree bindings
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Update the device tree bindings with added support for outbound mapping
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configurations.
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Signed-off-by: Ray Jui <rjui@broadcom.com>
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Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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---
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.../devicetree/bindings/pci/brcm,iproc-pcie.txt | 20 ++++++++++++++++++++
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1 file changed, 20 insertions(+)
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--- a/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
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+++ b/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
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@@ -17,6 +17,21 @@ Optional properties:
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- phys: phandle of the PCIe PHY device
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- phy-names: must be "pcie-phy"
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+- brcm,pcie-ob: Some iProc SoCs do not have the outbound address mapping done
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+by the ASIC after power on reset. In this case, SW needs to configure it
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+
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+If the brcm,pcie-ob property is present, the following properties become
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+effective:
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+
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+Required:
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+- brcm,pcie-ob-axi-offset: The offset from the AXI address to the internal
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+address used by the iProc PCIe core (not the PCIe address)
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+- brcm,pcie-ob-window-size: The outbound address mapping window size (in MB)
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+
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+Optional:
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+- brcm,pcie-ob-oarr-size: Some iProc SoCs need the OARR size bit to be set to
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+increase the outbound window size
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+
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Example:
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pcie0: pcie@18012000 {
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compatible = "brcm,iproc-pcie";
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@@ -38,6 +53,11 @@ Example:
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phys = <&phy 0 5>;
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phy-names = "pcie-phy";
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+
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+ brcm,pcie-ob;
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+ brcm,pcie-ob-oarr-size;
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+ brcm,pcie-ob-axi-offset = <0x00000000>;
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+ brcm,pcie-ob-window-size = <256>;
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};
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pcie1: pcie@18013000 {
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