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SubjectRe: [PATCH v6 1/5] dt-bindings: clock: meson: add A1 PLL clock controller bindings
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Hi Rob

Thanks for your review

On 2020/1/17 4:48, Rob Herring wrote:
> On Thu, Jan 16, 2020 at 04:04:36PM +0800, Jian Hu wrote:
>> Add the documentation to support Amlogic A1 PLL clock driver,
>> and add A1 PLL clock controller bindings.
>>
>> Signed-off-by: Jian Hu <jian.hu@amlogic.com>
>> ---
>> .../bindings/clock/amlogic,a1-pll-clkc.yaml | 54 +++++++++++++++++++
>> include/dt-bindings/clock/a1-pll-clkc.h | 16 ++++++
>> 2 files changed, 70 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/clock/amlogic,a1-pll-clkc.yaml
>> create mode 100644 include/dt-bindings/clock/a1-pll-clkc.h
>>
>> diff --git a/Documentation/devicetree/bindings/clock/amlogic,a1-pll-clkc.yaml b/Documentation/devicetree/bindings/clock/amlogic,a1-pll-clkc.yaml
>> new file mode 100644
>> index 000000000000..071240b65e70
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/amlogic,a1-pll-clkc.yaml
>> @@ -0,0 +1,54 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: "http://devicetree.org/schemas/amlogic,a1-pll-clkc.yaml#"
>> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
>> +
>> +title: Amlogic Meson A/C serials PLL Clock Control Unit Device Tree Bindings
>> +
>> +maintainers:
>> + - Neil Armstrong <narmstrong@baylibre.com>
>> + - Jerome Brunet <jbrunet@baylibre.com>
>> + - Jian Hu <jian.hu@jian.hu.com>
>> +
>> +properties:
>> + compatible:
>> + const: amlogic,a1-pll-clkc
>> +
>> + "#clock-cells":
>> + const: 1
>> +
>> + reg:
>> + maxItems: 1
>> +
>> + clocks:
>> + maxItems: 2
>
> Not necessary, so drop. Implied by the length of 'items'.
>
Ok, I will remove it.
>> + items:
>> + - description: input xtal_fixpll
>> + - description: input xtal_hifipll
>> +
>> + clock-names:
>> + maxItems: 2
>
> Same here.
OK, remove it.
>
>> + items:
>> + - const: xtal_fixpll
>> + - const: xtal_hifipll
>> +
>> +required:
>> + - compatible
>> + - "#clock-cells"
>> + - reg
>> + - clocks
>> + - clock-names
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> + - |
>> + clkc_pll: pll-clock-controller@7c80 {
>> + compatible = "amlogic,a1-pll-clkc";
>> + reg = <0 0x7c80 0 0x18c>;
>> + #clock-cells = <1>;
>> + clocks = <&clkc_periphs CLKID_XTAL_FIXPLL>,
>> + <&clkc_periphs CLKID_XTAL_HIFIPLL>;
>
> The example will fail to build because these aren't defined.
>
> Run 'make dt_binding_check'.
>
I have verified it, it is caused by CLKID_XTAL_FIXPLL and
CLKID_XTAL_HIFIPLL. They are defined in
include/dt-bindings/clock/a1-clkc.h in another patch [4/5].

The same with patch [4/5], there will be compiling error, too.

If change CLKID_XTAL_FIXPLL to '1', and change CLKID_XTAL_HIFIPLL to
'4', it can be compiled successfully.

Should I use macros or numbers?

>> + clock-names = "xtal_fixpll", "xtal_hifipll";
>> + };
>> diff --git a/include/dt-bindings/clock/a1-pll-clkc.h b/include/dt-bindings/clock/a1-pll-clkc.h
>> new file mode 100644
>> index 000000000000..58eae237e503
>> --- /dev/null
>> +++ b/include/dt-bindings/clock/a1-pll-clkc.h
>> @@ -0,0 +1,16 @@
>> +/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
>> +/*
>> + * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
>> + */
>> +
>> +#ifndef __A1_PLL_CLKC_H
>> +#define __A1_PLL_CLKC_H
>> +
>> +#define CLKID_FIXED_PLL 1
>> +#define CLKID_FCLK_DIV2 6
>> +#define CLKID_FCLK_DIV3 7
>> +#define CLKID_FCLK_DIV5 8
>> +#define CLKID_FCLK_DIV7 9
>> +#define CLKID_HIFI_PLL 10
>> +
>> +#endif /* __A1_PLL_CLKC_H */
>> --
>> 2.24.0
>>
>
> .
>

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