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[104.57.184.186]) by smtp.gmail.com with ESMTPSA id k6sm727416otf.80.2021.09.30.11.19.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Sep 2021 11:19:25 -0700 (PDT) From: Bjorn Andersson To: Andy Gross , Bjorn Andersson , Rob Herring , Frank Rowand Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Chris Lew , Deepak Kumar Singh Subject: [PATCH v2 2/4] dt-bindings: soc: smem: Make indirection optional Date: Thu, 30 Sep 2021 11:21:09 -0700 Message-Id: <20210930182111.57353-3-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210930182111.57353-1-bjorn.andersson@linaro.org> References: <20210930182111.57353-1-bjorn.andersson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In the olden days the Qualcomm shared memory (SMEM) region consisted of multiple chunks of memory, so SMEM was described as a standalone node with references to its various memory regions. But practically all modern Qualcomm platforms has a single reserved memory region used for SMEM. So rather than having to use two nodes to describe the one SMEM region, update the binding to allow the reserved-memory region alone to describe SMEM. The olden format is preserved as valid, as this is widely used already. Signed-off-by: Bjorn Andersson --- Changes since v1: - None .../bindings/soc/qcom/qcom,smem.yaml | 34 ++++++++++++++++--- 1 file changed, 30 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,smem.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,smem.yaml index f7e17713b3d8..4149cf2b66be 100644 --- a/Documentation/devicetree/bindings/soc/qcom/qcom,smem.yaml +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,smem.yaml @@ -10,14 +10,18 @@ maintainers: - Andy Gross - Bjorn Andersson -description: | - This binding describes the Qualcomm Shared Memory Manager, used to share data - between various subsystems and OSes in Qualcomm platforms. +description: + This binding describes the Qualcomm Shared Memory Manager, a region of + reserved-memory used to share data between various subsystems and OSes in + Qualcomm platforms. properties: compatible: const: qcom,smem + reg: + maxItems: 1 + memory-region: maxItems: 1 description: handle to memory reservation for main SMEM memory region. @@ -29,11 +33,19 @@ properties: $ref: /schemas/types.yaml#/definitions/phandle description: handle to RPM message memory resource + no-map: true + required: - compatible - - memory-region - hwlocks +oneOf: + - required: + - reg + - no-map + - required: + - memory-region + additionalProperties: false examples: @@ -43,6 +55,20 @@ examples: #size-cells = <1>; ranges; + smem@fa00000 { + compatible = "qcom,smem"; + reg = <0xfa00000 0x200000>; + no-map; + + hwlocks = <&tcsr_mutex 3>; + }; + }; + - | + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + smem_region: smem@fa00000 { reg = <0xfa00000 0x200000>; no-map; -- 2.29.2