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[209.85.220.65]) by mx.google.com with SMTPS id q22sor23117609pll.36.2018.12.18.04.37.56 for (Google Transport Security); Tue, 18 Dec 2018 04:37:56 -0800 (PST) Received-SPF: pass (google.com: domain of sumit.garg@linaro.org designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=UJrnSvt4; spf=pass (google.com: domain of sumit.garg@linaro.org designates 209.85.220.65 as permitted sender) smtp.mailfrom=sumit.garg@linaro.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=dF7w3Iz4no/GB1OJhGsoU5IeShQF3P1gFHJ0K9wiEq4=; b=UJrnSvt4VkH8wHFWnwItmgRQuW/pklKLMBtM5/20q0TrTsw91ahUBjUq8WwVxuhif5 k8b3WFaahGZDZDMs9I2pfsUA+VPb2Q6RNhn9KGRA2OWXjOOs1LEgPnC+3fXjL91WHLhQ iDaDmoNSokN1DvsqP0A79cObJGzgtY1w3QObE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=dF7w3Iz4no/GB1OJhGsoU5IeShQF3P1gFHJ0K9wiEq4=; b=B2q4P+glF6WxRQKMZ8snW+wt4vAT9xWeNSijShnoVVr+TonsGu5g0yhC/k+kWQc/9R Qj9PUThprdCCcVwhIGRDtQCsU4Oi8KCTfHMwOWAKaS5dyvo6SHndJaMAC1nzU5UbHL/Z 0dv/66Y21UFkdOWLLh2NhbZ6i99Qnk/fcKqU9Dk+NiaA+2vtckmEPlnH7cZ34bWRVqp9 o2TQP63YjP3YZTJRXyrfdtkjCL+agAeuNQGbqp26qbPtTS9r4ECHhGObGEchhDN81ftF +jYi2DaTAE9QEp7IwEh+y2zmUFAMshcj1HPqyuDhWxBXdlsPzAMo8woucDs6eexDsvcA ygMw== X-Gm-Message-State: AA+aEWZgT9r0rCPVrFUvTOJO1J1Ec99Izxhw6GXRvEpEyozSmyZIdb3O rzQJaH7A2nuCNqGHBWgjno1LoUZR X-Google-Smtp-Source: AFSGD/Vut9qi4Jp9mD3dqvH0HavtBUVVbcggDwmjQFsG1PZenVml9SRTSL/YWE1i5VB9OBZ7J0kPdQ== X-Received: by 2002:a17:902:9a02:: with SMTP id v2mr16678806plp.180.1545136676522; Tue, 18 Dec 2018 04:37:56 -0800 (PST) Return-Path: Received: from localhost.localdomain ([117.196.232.175]) by smtp.gmail.com with ESMTPSA id a15sm21880529pgb.1.2018.12.18.04.37.54 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 18 Dec 2018 04:37:56 -0800 (PST) From: Sumit Garg To: daniel.thompson@linaro.org Cc: patches@linaro.org, Sumit Garg Subject: [PATCH 1/2] dt/bindings: add bindings for optional optee hw-rng node Date: Tue, 18 Dec 2018 18:07:30 +0530 Message-Id: <1545136651-25776-2-git-send-email-sumit.garg@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1545136651-25776-1-git-send-email-sumit.garg@linaro.org> References: <1545136651-25776-1-git-send-email-sumit.garg@linaro.org> Add bindings for OP-TEE based optional hardware random number generator. It could be used on ARM based devices where entropy source is not accessible to normal world (linux in this case). Signed-off-by: Sumit Garg --- .../devicetree/bindings/arm/firmware/linaro,optee-tz.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) -- 2.7.4 diff --git a/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt b/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt index d38834c..f567566 100644 --- a/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt +++ b/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt @@ -20,12 +20,28 @@ the reference implementation maintained by Linaro. "hvc" : HVC #0, with the register assignments specified in drivers/tee/optee/optee_smc.h +- hw-rng : Optional OP-TEE based hardware RNG in case hardware + entropy source is not accesible to normal world (Linux). + - uuid: Trusted Application identifier which implements + hw-rng + + - data-rate: Hardware RNG data generation rate in bytes per + second + + - quality: Hardware RNG entropy estimation per 1024 bits of + input Example: firmware { optee { compatible = "linaro,optee-tz"; method = "smc"; + + hw-rng { + uuid = "ab7a617c-b8e7-4d8f-8301-d09b61036b64"; + data-rate = <125>; + quality = <999>; + }; }; };