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Message-Id: <1464113250-15629-2-git-send-email-rob.rice@broadcom.com> Date: Tue, 24 May 2016 14:07:28 -0400 From: Rob Rice <rob.rice@...adcom.com> To: Jassi Brar <jassisinghbrar@...il.com>, Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>, Mark Rutland <mark.rutland@....com>, Ian Campbell <ijc+devicetree@...lion.org.uk>, Kumar Gala <galak@...eaurora.org> Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, bcm-kernel-feedback-list@...adcom.com, linux-kernel@...r.kernel.org, Ray Jui <rjui@...adcom.com>, Scott Branden <sbranden@...adcom.com>, Jon Mason <jonmason@...adcom.com>, Florian Fainelli <f.fainelli@...il.com>, Anup Patel <anup.patel@...adcom.com>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <will.deacon@....com>, Rob Rice <rrice@...adcom.com>, Rob Rice <rob.rice@...adcom.com> Subject: [PATCH 1/3] dt-bindings: add bindings documentation for PDC driver. From: Rob Rice <rrice@...adcom.com> Add the device tree binding documentation for the PDC hardware in Broadcom iProc SoCs. Signed-off-by: Rob Rice <rob.rice@...adcom.com> Reviewed-by: Ray Jui <ray.jui@...adcom.com> Reviewed-by: Anup Patel <anup.patel@...adcom.com> Reviewed-by: Scott Branden <scott.branden@...adcom.com> --- .../bindings/mailbox/brcm,iproc-pdc-mbox.txt | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/brcm,iproc-pdc-mbox.txt diff --git a/Documentation/devicetree/bindings/mailbox/brcm,iproc-pdc-mbox.txt b/Documentation/devicetree/bindings/mailbox/brcm,iproc-pdc-mbox.txt new file mode 100644 index 0000000..411ccf4 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/brcm,iproc-pdc-mbox.txt @@ -0,0 +1,23 @@ +The PDC driver manages data transfer to and from various offload engines +on some Broadcom SoCs. An SoC may have multiple PDC hardware blocks. There is +one device tree entry per block. + +Required properties: +- compatible : Should be "brcm,iproc-pdc-mbox". +- reg: Should contain PDC registers location and length. +- interrupts: Should contain the IRQ line for the PDC. +- #mbox-cells: 1 +- brcm,rx-status-len: Length of metadata preceding received frames, in bytes. + +Optional properties: +- brcm,use-bcm-hdr: present if a BCM header precedes each frame. + +Example: + pdc0: iproc-pdc0@...12c0000 { + compatible = "brcm,iproc-pdc-mbox"; + reg = <0 0x612c0000 0 0x445>; /* PDC FS0 regs */ + interrupts = <GIC_SPI 187 IRQ_TYPE_LEVEL_HIGH>; + #mbox-cells = <1>; /* one cell per mailbox channel */ + brcm,rx-status-len = <32>; + brcm,use-bcm-hdr; + }; -- 2.1.0
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