linux-kernel - Re: [PATCH v1 2/7] dt-bindings: spi: Add Tegra QSPI device tree binding

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Date:   Wed, 9 Dec 2020 12:28:46 -0800
From:   Sowjanya Komatineni <skomatineni@...dia.com>
To:     Rob Herring <robh@...nel.org>
CC:     <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <broonie@...nel.org>, <linux-spi@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH v1 2/7] dt-bindings: spi: Add Tegra QSPI device tree
 binding


On 12/9/20 9:26 AM, Rob Herring wrote:
> On Tue, Dec 01, 2020 at 01:12:43PM -0800, Sowjanya Komatineni wrote:
>> This patch adds YAML based device tree binding document for Tegra
>> QSPI driver.
>>
>> Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com>
>> ---
>>   .../devicetree/bindings/spi/nvidia,tegra-qspi.yaml | 77 ++++++++++++++++++++++
>>   1 file changed, 77 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/spi/nvidia,tegra-qspi.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/spi/nvidia,tegra-qspi.yaml b/Documentation/devicetree/bindings/spi/nvidia,tegra-qspi.yaml
>> new file mode 100644
>> index 0000000..038a085
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/spi/nvidia,tegra-qspi.yaml
>> @@ -0,0 +1,77 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/spi/nvidia,tegra-qspi.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Tegra Quad SPI Controller
>> +
>> +maintainers:
>> +  - Thierry Reding <thierry.reding@...il.com>
>> +  - Jonathan Hunter <jonathanh@...dia.com>
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - nvidia,tegra210-qspi
>> +      - nvidia,tegra186-qspi
>> +      - nvidia,tegra194-qspi
>> +
>> +  reg:
>> +    items:
>> +      - description: QSPI registers
> Just 'maxItems: 1'
>
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  clock-names:
>> +    items:
>> +      - const: qspi
> Kind of a pointless name.
Thanks Rob for feedback. Do you mean to change name something like 
qspi-clk instead of qspi?
>
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  reset-names:
>> +    minItems: 1
>> +    items:
>> +      - const: qspi
> Same here.
>
>> +
>> +  resets:
>> +    maxItems: 1
>> +
>> +  dmas:
>> +    maxItems: 2
>> +
>> +  dma-names:
>> +    items:
>> +      - const: rx
>> +      - const: tx
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - interrupts
>> +  - clock-names
>> +  - clocks
>> +  - reset-names
>> +  - resets
>> +
>> +additionalProperties: true
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/clock/tegra210-car.h>
>> +    #include <dt-bindings/reset/tegra210-car.h>
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +
>> +    spi@...10000 {
>> +            compatible = "nvidia,tegra210-qspi";
>> +            reg = <0x70410000 0x1000>;
>> +            interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
>> +            clocks = <&tegra_car TEGRA210_CLK_QSPI>;
>> +            clock-names = "qspi";
>> +            resets = <&tegra_car 211>;
>> +            reset-names = "qspi";
>> +            dmas = <&apbdma 5>, <&apbdma 5>;
>> +            dma-names = "rx", "tx";
>> +    };
>> -- 
>> 2.7.4
>>