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[188.155.181.108]) by smtp.gmail.com with ESMTPSA id a9-20020a1709066d4900b006da888c3ef0sm3720444ejt.108.2022.03.06.03.11.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 06 Mar 2022 03:11:30 -0800 (PST) From: Krzysztof Kozlowski To: Alim Akhtar , Avri Altman , Rob Herring , Krzysztof Kozlowski , Andy Gross , Bjorn Andersson , Wei Xu , Matthias Brugger , Jan Kotas , Li Wei , Stanley Chu , Vignesh Raghavendra , linux-scsi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-mediatek@lists.infradead.org Subject: [PATCH v3 01/12] dt-bindings: ufs: add common platform bindings Date: Sun, 6 Mar 2022 12:11:14 +0100 Message-Id: <20220306111125.116455-2-krzysztof.kozlowski@canonical.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220306111125.116455-1-krzysztof.kozlowski@canonical.com> References: <20220306111125.116455-1-krzysztof.kozlowski@canonical.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Add bindings for common parts (platform) of Universal Flash Storage (UFS) Host Controllers in dtschema format. Include also the bindings directory in the UFS maintainers entry. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Alim Akhtar --- .../devicetree/bindings/ufs/ufs-common.yaml | 82 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 83 insertions(+) create mode 100644 Documentation/devicetree/bindings/ufs/ufs-common.yaml diff --git a/Documentation/devicetree/bindings/ufs/ufs-common.yaml b/Documentation/devicetree/bindings/ufs/ufs-common.yaml new file mode 100644 index 000000000000..47a4e9e1a775 --- /dev/null +++ b/Documentation/devicetree/bindings/ufs/ufs-common.yaml @@ -0,0 +1,82 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/ufs/ufs-common.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Common properties for Universal Flash Storage (UFS) Host Controllers + +maintainers: + - Alim Akhtar + - Avri Altman + +properties: + clocks: true + + clock-names: true + + freq-table-hz: + items: + items: + - description: Minimum frequency for given clock in Hz + - description: Maximum frequency for given clock in Hz + description: | + Array of operating frequencies in Hz stored in the same order + as the clocks property. If this property is not defined or a value in the + array is "0" then it is assumed that the frequency is set by the parent + clock or a fixed rate clock source. + + interrupts: + maxItems: 1 + + lanes-per-direction: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [1, 2] + default: 2 + description: + Number of lanes available per direction. Note that it is assume same + number of lanes is used both directions at once. + + vdd-hba-supply: + description: + Phandle to UFS host controller supply regulator node. + + vcc-supply: + description: + Phandle to VCC supply regulator node. + + vccq-supply: + description: + Phandle to VCCQ supply regulator node. + + vccq2-supply: + description: + Phandle to VCCQ2 supply regulator node. + + vcc-supply-1p8: + type: boolean + description: + For embedded UFS devices, valid VCC range is 1.7-1.95V or 2.7-3.6V. This + boolean property when set, specifies to use low voltage range of + 1.7-1.95V. Note for external UFS cards this property is invalid and valid + VCC range is always 2.7-3.6V. + + vcc-max-microamp: + description: + Specifies max. load that can be drawn from VCC supply. + + vccq-max-microamp: + description: + Specifies max. load that can be drawn from VCCQ supply. + + vccq2-max-microamp: + description: + Specifies max. load that can be drawn from VCCQ2 supply. + +dependencies: + freq-table-hz: [ 'clocks' ] + +required: + - interrupts + +additionalProperties: true diff --git a/MAINTAINERS b/MAINTAINERS index d7ea92ce1b1d..ef16268b6ca6 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -20100,6 +20100,7 @@ R: Alim Akhtar R: Avri Altman L: linux-scsi@vger.kernel.org S: Supported +F: Documentation/devicetree/bindings/ufs/ F: Documentation/scsi/ufs.rst F: drivers/scsi/ufs/