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[88.156.142.67]) by smtp.gmail.com with ESMTPSA id p13-20020a2eb98d000000b0027a02d2d4ecsm574058ljp.24.2022.12.14.02.31.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 14 Dec 2022 02:31:34 -0800 (PST) Message-ID: <149db463-bc54-7a12-eb95-eeef5be137ba@linaro.org> Date: Wed, 14 Dec 2022 11:31:33 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.1 Subject: Re: [PATCH 1/2] dt-bindings: reserved-memory: rmtfs: Document qcom,assign-to-nav Content-Language: en-US To: Konrad Dybcio , linux-arm-msm@vger.kernel.org, andersson@kernel.org, agross@kernel.org Cc: marijn.suijten@somainline.org, Rob Herring , Krzysztof Kozlowski , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20221213170340.456252-1-konrad.dybcio@linaro.org> <005d073c-a937-5ef8-a97b-09bc17d6f354@linaro.org> From: Krzysztof Kozlowski In-Reply-To: <005d073c-a937-5ef8-a97b-09bc17d6f354@linaro.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 14/12/2022 10:55, Konrad Dybcio wrote: > > > On 14.12.2022 09:11, Krzysztof Kozlowski wrote: >> On 13/12/2022 18:03, Konrad Dybcio wrote: >>> Some SoCs mandate that the RMTFS is also assigned to the NAV VM, while >>> others really don't want that. Since it has to be conditional, add a >>> bool property to toggle this behavior. >>> >>> Signed-off-by: Konrad Dybcio >>> --- >>> .../devicetree/bindings/reserved-memory/qcom,rmtfs-mem.yaml | 5 +++++ >>> 1 file changed, 5 insertions(+) >>> >>> diff --git a/Documentation/devicetree/bindings/reserved-memory/qcom,rmtfs-mem.yaml b/Documentation/devicetree/bindings/reserved-memory/qcom,rmtfs-mem.yaml >>> index 2998f1c8f0db..1d8c4621178a 100644 >>> --- a/Documentation/devicetree/bindings/reserved-memory/qcom,rmtfs-mem.yaml >>> +++ b/Documentation/devicetree/bindings/reserved-memory/qcom,rmtfs-mem.yaml >>> @@ -31,6 +31,11 @@ properties: >>> description: > >>> vmid of the remote processor, to set up memory protection >>> >>> + qcom,assign-to-nav: >>> + type: boolean >>> + description: > >> >> No need for '>' >> >>> + whether to also assign the region to the NAV VM >> >> Here and in property name you express desired Linux driver action, but >> it is better to express the property of the hardware. What is >> different/special in these SoCs or their configuration that additional >> assignment is needed? > Honestly, I have no clue.. probably there's something more complex > than was there before connected to GPS.. One thing could be number of VMs - if it is even something known. Best regards, Krzysztof