From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELv6m8t52aUOZuv2B8oCI1/SB3NaKzQYgzPLL0iaKBzA6o5sLkF+J3O5/eBYJc0RFts4zhNy ARC-Seal: i=1; a=rsa-sha256; t=1520449044; cv=none; d=google.com; s=arc-20160816; b=cgYzHsnvYQ8SLQCtc3fMcxKhao1dTjIuBpDF9HDLp/tzgrtiAE/DEJ8liuf5wsOv3U 53zPKaBL6hKerqht5eu3h1IXb5vd/KQLHvNvlQLkG/LRKtQgJVBrLoK+g1FdO67rEhcn Pij710gBXoK7KxpIpm0gKkL4rQvLM5/ceRLhDLHT3vqEfAU/64DwmWX6oK6bXyDbV3Ne CqQvck1Bav79y52k/a+GZ59hCJi+bTi1RK2OCKF3ZBpz8EhyQeYtVRjW68Cl1IIa1kAA AcwH/crnPZGYhHLsgbBHFaV5M/+zpTZVkf1Y5Qjv1IGMG07kTIhDTXKtce5eJDa38Pep 0Inw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:cc:to:from :arc-authentication-results; bh=tvpgBx58dxt8GFegU2pAoGgx9wz2SY1jFkets80T1gI=; b=cOSMWr7wHLbU8H4DmKi1DXL7EotT9IC30PZMkQHgawe+GzaEHRraTA33QRjxueCobv aYJqUPFYpk6N4cs/e0xr17Sau0MdvAKSNZjGF+u21bTJlutMBX651ylqWxud/fRjt7o9 Pxw7QXb+cEqZTHEyix/Y4atC1haqNv8sOCy8sg/am4SJPV/ebW7tMc1IvJh6fMRZ/Kar aMNqS0t5P+F6EUcATBI++FU1ZqkNGq++lksXJLUE0d0jVT+qjqC0wCOQ6Va3Dd6sKpjO h9+6BySEqmRNracIR2ouR5PjZ5zcMPM7WJLchlEfYI+I9OxPQUENLZaReqyFKJW37Pds 8W/A== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of anholt@anholt.net designates 50.246.234.109 as permitted sender) smtp.mailfrom=anholt@anholt.net Authentication-Results: mx.google.com; spf=pass (google.com: domain of anholt@anholt.net designates 50.246.234.109 as permitted sender) smtp.mailfrom=anholt@anholt.net From: Eric Anholt To: Florian Fainelli , Mark Rutland , Rob Herring , devicetree@vger.kernel.org, Greg Kroah-Hartman , Phil Elwell Cc: linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Stefan Wahren , bcm-kernel-feedback-list@broadcom.com, Eric Anholt Subject: [PATCH v2 3/6] dt-bindings: soc: Add a binding for the Broadcom VCHIQ services. Date: Wed, 7 Mar 2018 10:57:13 -0800 Message-Id: <20180307185716.17449-3-eric@anholt.net> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180307185716.17449-1-eric@anholt.net> References: <20180307185716.17449-1-eric@anholt.net> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1594306376933935522?= X-GMAIL-MSGID: =?utf-8?q?1594306376933935522?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: The VCHIQ communication channel can be provided by BCM283x and Capri SoCs, to communicate with the VPU-side OS services. Signed-off-by: Eric Anholt --- v2: dropped firmware property, added cache-line-size. .../bindings/soc/bcm/brcm,bcm2835-vchiq.txt | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt new file mode 100644 index 000000000000..cdef4abc5e47 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt @@ -0,0 +1,28 @@ +Broadcom VCHIQ firmware services + +Required properties: + +- compatible: Should be "brcm,bcm2835-vchiq" +- reg: Physical base address and length of the doorbell register pair +- interrupts: The interrupt number + See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt + +Optional properties: + +- cache-line-size: + Size of L2 cache lines. The VPU firmware detects + this property and overrides it with the actual L2 + cache line size it's using when loading the + device-tree. Determines the required alignment of + offsets/sizes of VCHIQ pagelists. If missing, the + firmware assumes an older kernel using 32-byte + alignment. + +Example: + +vchiq@7e00b840 { + compatible = "brcm,bcm2835-vchiq"; + reg = <0x7e00b840 0xf>; + interrupts = <0 2>; + cache-line-size: <32>; +}; -- 2.16.2