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Date: Mon, 4 May 2020 11:44:51 +0530
From: Sivaprakash Murugesan <sivaprak@...eaurora.org>
To: Rob Herring <robh@...nel.org>
Cc: agross@...nel.org, bjorn.andersson@...aro.org,
mturquette@...libre.com, sboyd@...nel.org,
jassisinghbrar@...il.com, linux-arm-msm@...r.kernel.org,
linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH V3 1/8] dt-bindings: mailbox: Add YAML schemas for QCOM
APCS global block
On 4/21/2020 2:29 AM, Rob Herring wrote:
> On Tue, Apr 14, 2020 at 08:25:15AM +0530, Sivaprakash Murugesan wrote:
>> Qualcomm APCS global block provides a bunch of generic properties which
>> are required in a device tree. Add YAML schema for these properties.
>>
>> Signed-off-by: Sivaprakash Murugesan <sivaprak@...eaurora.org>
>> ---
>> .../bindings/mailbox/qcom,apcs-kpss-global.txt | 88 ----------------------
>> .../bindings/mailbox/qcom,apcs-kpss-global.yaml | 88 ++++++++++++++++++++++
>> 2 files changed, 88 insertions(+), 88 deletions(-)
>> delete mode 100644 Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt
>> create mode 100644 Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt
>> deleted file mode 100644
>> index beec612..0000000
>> --- a/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt
>> +++ /dev/null
>> @@ -1,88 +0,0 @@
>> -Binding for the Qualcomm APCS global block
>> -==========================================
>> -
>> -This binding describes the APCS "global" block found in various Qualcomm
>> -platforms.
>> -
>> -- compatible:
>> - Usage: required
>> - Value type: <string>
>> - Definition: must be one of:
>> - "qcom,msm8916-apcs-kpss-global",
>> - "qcom,msm8996-apcs-hmss-global"
>> - "qcom,msm8998-apcs-hmss-global"
>> - "qcom,qcs404-apcs-apps-global"
>> - "qcom,sc7180-apss-shared"
>> - "qcom,sdm845-apss-shared"
>> - "qcom,sm8150-apss-shared"
>> - "qcom,ipq8074-apcs-apps-global"
>> -
>> -- reg:
>> - Usage: required
>> - Value type: <prop-encoded-array>
>> - Definition: must specify the base address and size of the global block
>> -
>> -- clocks:
>> - Usage: required if #clock-names property is present
>> - Value type: <phandle array>
>> - Definition: phandles to the two parent clocks of the clock driver.
>> -
>> -- #mbox-cells:
>> - Usage: required
>> - Value type: <u32>
>> - Definition: as described in mailbox.txt, must be 1
>> -
>> -- #clock-cells:
>> - Usage: optional
>> - Value type: <u32>
>> - Definition: as described in clock.txt, must be 0
>> -
>> -- clock-names:
>> - Usage: required if the platform data based clock driver needs to
>> - retrieve the parent clock names from device tree.
>> - This will requires two mandatory clocks to be defined.
>> - Value type: <string-array>
>> - Definition: must be "pll" and "aux"
>> -
>> -= EXAMPLE
>> -The following example describes the APCS HMSS found in MSM8996 and part of the
>> -GLINK RPM referencing the "rpm_hlos" doorbell therein.
>> -
>> - apcs_glb: mailbox@...0000 {
>> - compatible = "qcom,msm8996-apcs-hmss-global";
>> - reg = <0x9820000 0x1000>;
>> -
>> - #mbox-cells = <1>;
>> - };
>> -
>> - rpm-glink {
>> - compatible = "qcom,glink-rpm";
>> -
>> - interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
>> -
>> - qcom,rpm-msg-ram = <&rpm_msg_ram>;
>> -
>> - mboxes = <&apcs_glb 0>;
>> - mbox-names = "rpm_hlos";
>> - };
>> -
>> -Below is another example of the APCS binding on MSM8916 platforms:
>> -
>> - apcs: mailbox@...1000 {
>> - compatible = "qcom,msm8916-apcs-kpss-global";
>> - reg = <0xb011000 0x1000>;
>> - #mbox-cells = <1>;
>> - clocks = <&a53pll>;
>> - #clock-cells = <0>;
>> - };
>> -
>> -Below is another example of the APCS binding on QCS404 platforms:
>> -
>> - apcs_glb: mailbox@...1000 {
>> - compatible = "qcom,qcs404-apcs-apps-global", "syscon";
>> - reg = <0x0b011000 0x1000>;
>> - #mbox-cells = <1>;
>> - clocks = <&apcs_hfpll>, <&gcc GCC_GPLL0_AO_OUT_MAIN>;
>> - clock-names = "pll", "aux";
>> - #clock-cells = <0>;
>> - };
>> diff --git a/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.yaml b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.yaml
>> new file mode 100644
>> index 0000000..b46474b
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.yaml
>> @@ -0,0 +1,88 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: "http://devicetree.org/schemas/mailbox/qcom,apcs-kpss-global.yaml#"
>> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
>> +
>> +title: Qualcomm APCS global block bindings
>> +
>> +description:
>> + This binding describes the APCS "global" block found in various Qualcomm
>> + platforms.
>> +
>> +maintainers:
>> + - Sivaprakash Murugesan <sivaprak@...eaurora.org>
>> +
>> +properties:
>> + compatible:
>> + enum:
>> + - qcom,ipq8074-apcs-apps-global
>> + - qcom,msm8916-apcs-kpss-global
>> + - qcom,msm8996-apcs-hmss-global
>> + - qcom,msm8998-apcs-hmss-global
>> + - qcom,qcs404-apcs-apps-global
>> + - qcom,sc7180-apss-shared
>> + - qcom,sdm845-apss-shared
>> + - qcom,sm8150-apss-shared
>> +
>> + reg:
>> + description: specifies the base address and size of the global block
> Can drop this.
ok.
>
>> + maxItems: 1
>> +
>> + clocks:
>> + description: phandles to the parent clocks of the clock driver
> Need to define how many and what each one is.
ok.
>
>> +
>> + '#mbox-cells':
>> + const: 1
>> +
>> + '#clock-cells':
>> + const: 0
>> +
>> + clock-names:
>> + description:
>> + parent clock names, required if the platform data based clock driver
>> + needs to retrieve the parent clock names from device tree.
> Drop.
ok.
>
>> + maxItems: 2
> Not needed as 'items' implies this.
ok.
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