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dt-bindings: ufs: qcom,ufs: convert to dtschema

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Convert the Qualcomm Universal Flash Storage (UFS) Controller to DT
schema format.

Except the conversion, add also properties already present in DTS:
iommus, interconnects and power-domains.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220306111125.116455-6-krzysztof.kozlowski@canonical.com
This commit is contained in:
Krzysztof Kozlowski
2022-03-06 12:11:18 +01:00
committed by Rob Herring
parent 578f116b7a
commit 462c5c0aa7
2 changed files with 242 additions and 90 deletions
Download Patch File Download Diff File Expand all files Collapse all files

242
Documentation/devicetree/bindings/ufs/qcom,ufs.yaml Normal file
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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/ufs/qcom,ufs.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm Universal Flash Storage (UFS) Controller
maintainers:
- Bjorn Andersson <bjorn.andersson@linaro.org>
- Andy Gross <agross@kernel.org>
# Select only our matches, not all jedec,ufs-2.0
select:
properties:
compatible:
contains:
const: qcom,ufshc
required:
- compatible
properties:
compatible:
items:
- enum:
- qcom,msm8994-ufshc
- qcom,msm8996-ufshc
- qcom,msm8998-ufshc
- qcom,sdm845-ufshc
- qcom,sm8150-ufshc
- qcom,sm8250-ufshc
- qcom,sm8350-ufshc
- qcom,sm8450-ufshc
- const: qcom,ufshc
- const: jedec,ufs-2.0
clocks:
minItems: 8
maxItems: 11
clock-names:
minItems: 8
maxItems: 11
interconnects:
minItems: 2
maxItems: 2
interconnect-names:
items:
- const: ufs-ddr
- const: cpu-ufs
iommus:
minItems: 1
maxItems: 2
phys:
maxItems: 1
phy-names:
items:
- const: ufsphy
power-domains:
maxItems: 1
reg:
minItems: 1
maxItems: 2
resets:
maxItems: 1
'#reset-cells':
const: 1
reset-names:
items:
- const: rst
reset-gpios:
maxItems: 1
description:
GPIO connected to the RESET pin of the UFS memory device.
required:
- compatible
- reg
allOf:
- $ref: ufs-common.yaml
- if:
properties:
compatible:
contains:
enum:
- qcom,msm8998-ufshc
- qcom,sm8250-ufshc
- qcom,sm8350-ufshc
- qcom,sm8450-ufshc
then:
properties:
clocks:
minItems: 8
maxItems: 8
clock-names:
items:
- const: core_clk
- const: bus_aggr_clk
- const: iface_clk
- const: core_clk_unipro
- const: ref_clk
- const: tx_lane0_sync_clk
- const: rx_lane0_sync_clk
- const: rx_lane1_sync_clk
reg:
minItems: 1
maxItems: 1
- if:
properties:
compatible:
contains:
enum:
- qcom,sdm845-ufshc
- qcom,sm8150-ufshc
then:
properties:
clocks:
minItems: 9
maxItems: 9
clock-names:
items:
- const: core_clk
- const: bus_aggr_clk
- const: iface_clk
- const: core_clk_unipro
- const: ref_clk
- const: tx_lane0_sync_clk
- const: rx_lane0_sync_clk
- const: rx_lane1_sync_clk
- const: ice_core_clk
reg:
minItems: 2
maxItems: 2
- if:
properties:
compatible:
contains:
enum:
- qcom,msm8996-ufshc
then:
properties:
clocks:
minItems: 11
maxItems: 11
clock-names:
items:
- const: core_clk_src
- const: core_clk
- const: bus_clk
- const: bus_aggr_clk
- const: iface_clk
- const: core_clk_unipro_src
- const: core_clk_unipro
- const: core_clk_ice
- const: ref_clk
- const: tx_lane0_sync_clk
- const: rx_lane0_sync_clk
reg:
minItems: 1
maxItems: 1
# TODO: define clock bindings for qcom,msm8994-ufshc
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/clock/qcom,gcc-sm8450.h>
#include <dt-bindings/clock/qcom,rpmh.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interconnect/qcom,sm8450.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
soc {
#address-cells = <2>;
#size-cells = <2>;
ufs@1d84000 {
compatible = "qcom,sm8450-ufshc", "qcom,ufshc",
"jedec,ufs-2.0";
reg = <0 0x01d84000 0 0x3000>;
interrupts = <GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH>;
phys = <&ufs_mem_phy_lanes>;
phy-names = "ufsphy";
lanes-per-direction = <2>;
#reset-cells = <1>;
resets = <&gcc GCC_UFS_PHY_BCR>;
reset-names = "rst";
reset-gpios = <&tlmm 210 GPIO_ACTIVE_LOW>;
vcc-supply = <&vreg_l7b_2p5>;
vcc-max-microamp = <1100000>;
vccq-supply = <&vreg_l9b_1p2>;
vccq-max-microamp = <1200000>;
power-domains = <&gcc UFS_PHY_GDSC>;
iommus = <&apps_smmu 0xe0 0x0>;
interconnects = <&aggre1_noc MASTER_UFS_MEM &mc_virt SLAVE_EBI1>,
<&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_UFS_MEM_CFG>;
interconnect-names = "ufs-ddr", "cpu-ufs";
clock-names = "core_clk",
"bus_aggr_clk",
"iface_clk",
"core_clk_unipro",
"ref_clk",
"tx_lane0_sync_clk",
"rx_lane0_sync_clk",
"rx_lane1_sync_clk";
clocks = <&gcc GCC_UFS_PHY_AXI_CLK>,
<&gcc GCC_AGGRE_UFS_PHY_AXI_CLK>,
<&gcc GCC_UFS_PHY_AHB_CLK>,
<&gcc GCC_UFS_PHY_UNIPRO_CORE_CLK>,
<&rpmhcc RPMH_CXO_CLK>,
<&gcc GCC_UFS_PHY_TX_SYMBOL_0_CLK>,
<&gcc GCC_UFS_PHY_RX_SYMBOL_0_CLK>,
<&gcc GCC_UFS_PHY_RX_SYMBOL_1_CLK>;
freq-table-hz = <75000000 300000000>,
<0 0>,
<0 0>,
<75000000 300000000>,
<75000000 300000000>,
<0 0>,
<0 0>,
<0 0>;
};
};

90
Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
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@@ -1,90 +0,0 @@
* Universal Flash Storage (UFS) Host Controller
UFSHC nodes are defined to describe on-chip UFS host controllers.
Each UFS controller instance should have its own node.
Required properties:
- compatible : must contain "jedec,ufs-1.1" or "jedec,ufs-2.0"
For Qualcomm SoCs must contain, as below, an
SoC-specific compatible along with "qcom,ufshc" and
the appropriate jedec string:
"qcom,msm8994-ufshc", "qcom,ufshc", "jedec,ufs-2.0"
"qcom,msm8996-ufshc", "qcom,ufshc", "jedec,ufs-2.0"
"qcom,msm8998-ufshc", "qcom,ufshc", "jedec,ufs-2.0"
"qcom,sdm845-ufshc", "qcom,ufshc", "jedec,ufs-2.0"
"qcom,sm8150-ufshc", "qcom,ufshc", "jedec,ufs-2.0"
"qcom,sm8250-ufshc", "qcom,ufshc", "jedec,ufs-2.0"
"qcom,sm8350-ufshc", "qcom,ufshc", "jedec,ufs-2.0"
"qcom,sm8450-ufshc", "qcom,ufshc", "jedec,ufs-2.0"
- interrupts : <interrupt mapping for UFS host controller IRQ>
- reg : <registers mapping>
Optional properties:
- phys : phandle to UFS PHY node
- phy-names : the string "ufsphy" when is found in a node, along
with "phys" attribute, provides phandle to UFS PHY node
- vdd-hba-supply : phandle to UFS host controller supply regulator node
- vcc-supply : phandle to VCC supply regulator node
- vccq-supply : phandle to VCCQ supply regulator node
- vccq2-supply : phandle to VCCQ2 supply regulator node
- vcc-supply-1p8 : 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 : specifies max. load that can be drawn from vcc supply
- vccq-max-microamp : specifies max. load that can be drawn from vccq supply
- vccq2-max-microamp : specifies max. load that can be drawn from vccq2 supply
- clocks : List of phandle and clock specifier pairs
- clock-names : List of clock input name strings sorted in the same
order as the clocks property.
"ref_clk" indicates reference clock frequency.
UFS host supplies reference clock to UFS device and UFS device
specification allows host to provide one of the 4 frequencies (19.2 MHz,
26 MHz, 38.4 MHz, 52MHz) for reference clock. This "ref_clk" entry is
parsed and used to update the reference clock setting in device.
Defaults to 26 MHz(as per specification) if not specified by host.
- freq-table-hz : Array of <min max> operating frequencies 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.
-lanes-per-direction : number of lanes available per direction - either 1 or 2.
Note that it is assume same number of lanes is used both
directions at once. If not specified, default is 2 lanes per direction.
- #reset-cells : Must be <1> for Qualcomm UFS controllers that expose
PHY reset from the UFS controller.
- resets : reset node register
- reset-names : describe reset node register, the "rst" corresponds to reset the whole UFS IP.
- reset-gpios : A phandle and gpio specifier denoting the GPIO connected
to the RESET pin of the UFS memory device.
Note: If above properties are not defined it can be assumed that the supply
regulators or clocks are always on.
Example:
ufshc@fc598000 {
compatible = "jedec,ufs-1.1";
reg = <0xfc598000 0x800>;
interrupts = <0 28 0>;
vdd-hba-supply = <&xxx_reg0>;
vcc-supply = <&xxx_reg1>;
vcc-supply-1p8;
vccq-supply = <&xxx_reg2>;
vccq2-supply = <&xxx_reg3>;
vcc-max-microamp = 500000;
vccq-max-microamp = 200000;
vccq2-max-microamp = 200000;
clocks = <&core 0>, <&ref 0>, <&phy 0>, <&iface 0>;
clock-names = "core_clk", "ref_clk", "phy_clk", "iface_clk";
freq-table-hz = <100000000 200000000>, <0 0>, <0 0>, <0 0>;
resets = <&reset 0 1>;
reset-names = "rst";
phys = <&ufsphy1>;
phy-names = "ufsphy";
#reset-cells = <1>;
};