From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5E086C43219 for ; Thu, 3 Nov 2022 23:53:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230182AbiKCXxl (ORCPT ); Thu, 3 Nov 2022 19:53:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36310 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229823AbiKCXxk (ORCPT ); Thu, 3 Nov 2022 19:53:40 -0400 Received: from relay01.th.seeweb.it (relay01.th.seeweb.it [IPv6:2001:4b7a:2000:18::162]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22CC51DA7C for ; Thu, 3 Nov 2022 16:53:40 -0700 (PDT) Received: from [192.168.31.208] (unknown [194.29.137.22]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by m-r1.th.seeweb.it (Postfix) with ESMTPSA id 024551F4F6; Fri, 4 Nov 2022 00:53:36 +0100 (CET) Message-ID: Date: Fri, 4 Nov 2022 00:53:37 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.4.1 Subject: Re: [PATCH v2 3/4] dt-bindings: firmware: scm: add sdm670 compatible To: Richard Acayan , Rob Herring , Krzysztof Kozlowski , Andy Gross , Bjorn Andersson , Vinod Koul , Robin Murphy , Chanho Park , Thierry Reding , Stephan Gerhold , Lorenzo Pieralisi , Robert Marko , Das Srinagesh , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Cc: ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org References: <20221103230349.212861-1-mailingradian@gmail.com> <20221103230349.212861-4-mailingradian@gmail.com> From: Konrad Dybcio In-Reply-To: <20221103230349.212861-4-mailingradian@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On 04/11/2022 00:03, Richard Acayan wrote: > The Snapdragon 670 uses SCM as for PSCI power management. Document the > appropriate compatible string for it. SCM and SMC (and SMCCC) are closely related but not the same. SMC (secure monitor call) is the standard mechanism of invoking communication with TZ. SCM (secure channel manager) is a QC mechanism of communicating with their vast vast vast HYP and TZ implementations, using HVC (hypervisor call) and SMC respectively. SMCCC (secure monitor call calling convention) is a standard for how to structure SMCs and HVCs. PSCI uses SMC calls on sdm670. Konrad > > Signed-off-by: Richard Acayan > Acked-by: Rob Herring > Reviewed-by: Guru Das Srinagesh > --- > Documentation/devicetree/bindings/firmware/qcom,scm.yaml | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/Documentation/devicetree/bindings/firmware/qcom,scm.yaml b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml > index be1b5746eddb..25688571ee7c 100644 > --- a/Documentation/devicetree/bindings/firmware/qcom,scm.yaml > +++ b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml > @@ -41,6 +41,7 @@ properties: > - qcom,scm-sc7180 > - qcom,scm-sc7280 > - qcom,scm-sc8280xp > + - qcom,scm-sdm670 > - qcom,scm-sdm845 > - qcom,scm-sdx55 > - qcom,scm-sdx65