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Message-ID: <000401d83252$41d5fe40$c581fac0$@samsung.com>
Date: Tue, 8 Mar 2022 00:06:24 +0530
From: "Alim Akhtar" <alim.akhtar@...sung.com>
To: "'Krzysztof Kozlowski'" <krzysztof.kozlowski@...onical.com>,
"'Avri Altman'" <avri.altman@....com>,
"'Rob Herring'" <robh+dt@...nel.org>,
"'Andy Gross'" <agross@...nel.org>,
"'Bjorn Andersson'" <bjorn.andersson@...aro.org>,
"'Wei Xu'" <xuwei5@...ilicon.com>,
"'Matthias Brugger'" <matthias.bgg@...il.com>,
"'Jan Kotas'" <jank@...ence.com>, "'Li Wei'" <liwei213@...wei.com>,
"'Stanley Chu'" <stanley.chu@...iatek.com>,
"'Vignesh Raghavendra'" <vigneshr@...com>,
<linux-scsi@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-samsung-soc@...r.kernel.org>,
<linux-mediatek@...ts.infradead.org>
Subject: RE: [PATCH v3 01/12] dt-bindings: ufs: add common platform bindings
Hi Krzysztof
>-----Original Message-----
>From: Krzysztof Kozlowski [mailto:krzysztof.kozlowski@...onical.com]
>Sent: Sunday, March 6, 2022 4:41 PM
>To: Alim Akhtar <alim.akhtar@...sung.com>; Avri Altman
><avri.altman@....com>; Rob Herring <robh+dt@...nel.org>; Krzysztof
>Kozlowski <krzysztof.kozlowski@...onical.com>; Andy Gross
><agross@...nel.org>; Bjorn Andersson <bjorn.andersson@...aro.org>; Wei
>Xu <xuwei5@...ilicon.com>; Matthias Brugger <matthias.bgg@...il.com>;
>Jan Kotas <jank@...ence.com>; Li Wei <liwei213@...wei.com>; Stanley Chu
><stanley.chu@...iatek.com>; Vignesh Raghavendra <vigneshr@...com>;
>linux-scsi@...r.kernel.org; devicetree@...r.kernel.org; linux-
>kernel@...r.kernel.org; linux-arm-msm@...r.kernel.org; linux-arm-
>kernel@...ts.infradead.org; linux-samsung-soc@...r.kernel.org; linux-
>mediatek@...ts.infradead.org
>Subject: [PATCH v3 01/12] dt-bindings: ufs: add common platform bindings
>
>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 <krzysztof.kozlowski@...onical.com>
>---
Reviewed-by: Alim Akhtar <alim.akhtar@...sung.com>
> .../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:
>+https://protect2.fireeye.com/v1/url?k=1c5f8d40-43c4b442-1c5e060f-0cc47a
>+31381a-044442c4c340dc87&q=1&e=f6b89910-3420-4a58-a18d-
>4ca02e079c2b&u=ht
>+tp%3A%2F%2Fdevicetree.org%2Fschemas%2Fufs%2Fufs-common.yaml%23
>+$schema:
>+https://protect2.fireeye.com/v1/url?k=bc24c591-e3bffc93-bc254ede-0cc47a
>+31381a-e9aaf10c3795a198&q=1&e=f6b89910-3420-4a58-a18d-
>4ca02e079c2b&u=ht
>+tp%3A%2F%2Fdevicetree.org%2Fmeta-schemas%2Fcore.yaml%23
>+
>+title: Common properties for Universal Flash Storage (UFS) Host
>+Controllers
>+
>+maintainers:
>+ - Alim Akhtar <alim.akhtar@...sung.com>
>+ - Avri Altman <avri.altman@....com>
>+
>+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 <min max> 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 <alim.akhtar@...sung.com>
> R: Avri Altman <avri.altman@....com>
> L: linux-scsi@...r.kernel.org
> S: Supported
>+F: Documentation/devicetree/bindings/ufs/
> F: Documentation/scsi/ufs.rst
> F: drivers/scsi/ufs/
>
>--
>2.32.0
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