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Message-ID: <1jilemo1r9.fsf@starbuckisacylon.baylibre.com>
Date: Mon, 27 Mar 2023 13:39:03 +0200
From: Jerome Brunet <jbrunet@...libre.com>
To: Dmitry Rokosov <ddrokosov@...rdevices.ru>
Cc: neil.armstrong@...aro.org, mturquette@...libre.com,
sboyd@...nel.org, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, khilman@...libre.com,
martin.blumenstingl@...glemail.com, jian.hu@...ogic.com,
kernel@...rdevices.ru, rockosov@...il.com,
linux-amlogic@...ts.infradead.org, linux-clk@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v11 3/5] dt-bindings: clock: meson: add A1 PLL and
Peripherals clkcs bindings
On Mon 27 Mar 2023 at 13:51, Dmitry Rokosov <ddrokosov@...rdevices.ru> wrote:
> On Mon, Mar 27, 2023 at 11:51:21AM +0200, Jerome Brunet wrote:
>>
>> On Tue 21 Mar 2023 at 22:30, Dmitry Rokosov <ddrokosov@...rdevices.ru> wrote:
>>
>> > Add the documentation for Amlogic A1 PLL and Amlogic A1 Peripherals
>> > clock drivers.
>> > Introduce Amlogic A1 PLL and Amlogic A1 Peripherals device tree
>> > bindings and include them to MAINTAINERS.
>> >
>> > Signed-off-by: Jian Hu <jian.hu@...ogic.com>
>> > Signed-off-by: Dmitry Rokosov <ddrokosov@...rdevices.ru>
>> > ---
>> > .../bindings/clock/amlogic,a1-clkc.yaml | 73 +++++++++++
>> > .../bindings/clock/amlogic,a1-pll-clkc.yaml | 59 +++++++++
>> > MAINTAINERS | 1 +
>> > include/dt-bindings/clock/amlogic,a1-clkc.h | 113 ++++++++++++++++++
>> > .../dt-bindings/clock/amlogic,a1-pll-clkc.h | 21 ++++
>> > 5 files changed, 267 insertions(+)
>> > create mode 100644 Documentation/devicetree/bindings/clock/amlogic,a1-clkc.yaml
>> > create mode 100644 Documentation/devicetree/bindings/clock/amlogic,a1-pll-clkc.yaml
>>
>> There is two drivers (and 2 independent patches). There should be 2
>> bindings patches as well.
>>
>
> Before, in previous versions I had two versions, but it wasn't bisectable
> approach.
You are confusing bisectable and Rob's robot. Splitting patches is more
that likely to help bisect (and patches backport) - not the other way around.
> a1-clkc schema depends on a1-pll-clkc headers and vice versa.
> It means dt schemas checkers will show us failure if we split them into two
> patchsets.
Only because you are patches are not upstream yet ...
> I know, that we can use raw digits instead of CLKID names, but IMO it doesn't
> look like production schema and it requires one more patchset above the
> series with proper CLKID definitons usage and proper header including.
>
> BTW, there is an example of Rob's test bot failure found in the previous
> v10 patch series due to chicken or the egg problem.
> https://lore.kernel.org/all/167769997208.7087.5344356236212731922.robh@kernel.org/
>
> Please advise what's the best practice to resolve that..
Don't use the header in your example would solve the problem and
still be correct DT wise.
The examples are just examples, they are not required to actually
matches a real HW, as far as I know.
>
>> > create mode 100644 include/dt-bindings/clock/amlogic,a1-clkc.h
>> > create mode 100644 include/dt-bindings/clock/amlogic,a1-pll-clkc.h
>> >
>> > diff --git a/Documentation/devicetree/bindings/clock/amlogic,a1-clkc.yaml b/Documentation/devicetree/bindings/clock/amlogic,a1-clkc.yaml
>> > new file mode 100644
>> > index 000000000000..cb6d8f4eb959
>> > --- /dev/null
>> > +++ b/Documentation/devicetree/bindings/clock/amlogic,a1-clkc.yaml
>> > @@ -0,0 +1,73 @@
>> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
>> > +%YAML 1.2
>> > +---
>> > +$id: http://devicetree.org/schemas/clock/amlogic,a1-clkc.yaml#
>> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> > +
>> > +title: Amlogic Meson A/C serials Peripheral Clock Control Unit
>> > +
>> > +maintainers:
>> > + - Neil Armstrong <neil.armstrong@...aro.org>
>> > + - Jerome Brunet <jbrunet@...libre.com>
>> > + - Jian Hu <jian.hu@...n.hu.com>
>> > + - Dmitry Rokosov <ddrokosov@...rdevices.ru>
>> > +
>> > +properties:
>> > + compatible:
>> > + const: amlogic,a1-clkc
>> > +
>> > + '#clock-cells':
>> > + const: 1
>> > +
>> > + reg:
>> > + maxItems: 1
>> > +
>> > + clocks:
>> > + items:
>> > + - description: input fixed pll div2
>> > + - description: input fixed pll div3
>> > + - description: input fixed pll div5
>> > + - description: input fixed pll div7
>> > + - description: input hifi pll
>> > + - description: input oscillator (usually at 24MHz)
>> > +
>> > + clock-names:
>> > + items:
>> > + - const: fclk_div2
>> > + - const: fclk_div3
>> > + - const: fclk_div5
>> > + - const: fclk_div7
>> > + - const: hifi_pll
>> > + - const: xtal
>> > +
>> > +required:
>> > + - compatible
>> > + - '#clock-cells'
>> > + - reg
>> > + - clocks
>> > + - clock-names
>> > +
>> > +additionalProperties: false
>> > +
>> > +examples:
>> > + - |
>> > + #include <dt-bindings/clock/amlogic,a1-pll-clkc.h>
>> > + apb {
>> > + #address-cells = <2>;
>> > + #size-cells = <2>;
>> > +
>> > + clock-controller@800 {
>> > + compatible = "amlogic,a1-clkc";
>> > + reg = <0 0x800 0 0x104>;
>> > + #clock-cells = <1>;
>> > + clocks = <&clkc_pll CLKID_FCLK_DIV2>,
>> > + <&clkc_pll CLKID_FCLK_DIV3>,
>> > + <&clkc_pll CLKID_FCLK_DIV5>,
>> > + <&clkc_pll CLKID_FCLK_DIV7>,
>> > + <&clkc_pll CLKID_HIFI_PLL>,
>> > + <&xtal>;
>> > + clock-names = "fclk_div2", "fclk_div3",
>> > + "fclk_div5", "fclk_div7",
>> > + "hifi_pll", "xtal";
>> > + };
>> > + };
>> > 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..77a13b1f9d5a
>> > --- /dev/null
>> > +++ b/Documentation/devicetree/bindings/clock/amlogic,a1-pll-clkc.yaml
>> > @@ -0,0 +1,59 @@
>> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
>> > +%YAML 1.2
>> > +---
>> > +$id: http://devicetree.org/schemas/clock/amlogic,a1-pll-clkc.yaml#
>> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> > +
>> > +title: Amlogic Meson A/C serials PLL Clock Control Unit
>> > +
>> > +maintainers:
>> > + - Neil Armstrong <neil.armstrong@...aro.org>
>> > + - Jerome Brunet <jbrunet@...libre.com>
>> > + - Jian Hu <jian.hu@...n.hu.com>
>> > + - Dmitry Rokosov <ddrokosov@...rdevices.ru>
>> > +
>> > +properties:
>> > + compatible:
>> > + const: amlogic,a1-pll-clkc
>> > +
>> > + '#clock-cells':
>> > + const: 1
>> > +
>> > + reg:
>> > + maxItems: 1
>> > +
>> > + clocks:
>> > + items:
>> > + - description: input fixpll_in
>> > + - description: input hifipll_in
>> > +
>> > + clock-names:
>> > + items:
>> > + - const: fixpll_in
>> > + - const: hifipll_in
>> > +
>> > +required:
>> > + - compatible
>> > + - '#clock-cells'
>> > + - reg
>> > + - clocks
>> > + - clock-names
>> > +
>> > +additionalProperties: false
>> > +
>> > +examples:
>> > + - |
>> > + #include <dt-bindings/clock/amlogic,a1-clkc.h>
>> > + apb {
>> > + #address-cells = <2>;
>> > + #size-cells = <2>;
>> > +
>> > + clock-controller@...0 {
>> > + compatible = "amlogic,a1-pll-clkc";
>> > + reg = <0 0x7c80 0 0x18c>;
>> > + #clock-cells = <1>;
>> > + clocks = <&clkc_periphs CLKID_FIXPLL_IN>,
>> > + <&clkc_periphs CLKID_HIFIPLL_IN>;
>> > + clock-names = "fixpll_in", "hifipll_in";
>> > + };
>> > + };
>> > diff --git a/MAINTAINERS b/MAINTAINERS
>> > index 39ff1a717625..8438bc9bd636 100644
>> > --- a/MAINTAINERS
>> > +++ b/MAINTAINERS
>> > @@ -1895,6 +1895,7 @@ L: linux-amlogic@...ts.infradead.org
>> > S: Maintained
>> > F: Documentation/devicetree/bindings/clock/amlogic*
>> > F: drivers/clk/meson/
>> > +F: include/dt-bindings/clock/a1*
>> > F: include/dt-bindings/clock/gxbb*
>> > F: include/dt-bindings/clock/meson*
>> >
>> > diff --git a/include/dt-bindings/clock/amlogic,a1-clkc.h b/include/dt-bindings/clock/amlogic,a1-clkc.h
>> > new file mode 100644
>> > index 000000000000..95131779982c
>> > --- /dev/null
>> > +++ b/include/dt-bindings/clock/amlogic,a1-clkc.h
>> > @@ -0,0 +1,113 @@
>> > +/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
>> > +/*
>> > + * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
>> > + * Author: Jian Hu <jian.hu@...ogic.com>
>> > + *
>> > + * Copyright (c) 2023, SberDevices. All Rights Reserved.
>> > + * Author: Dmitry Rokosov <ddrokosov@...rdevices.ru>
>> > + */
>> > +
>> > +#ifndef __A1_CLKC_H
>> > +#define __A1_CLKC_H
>> > +
>> > +#define CLKID_FIXPLL_IN 0
>> > +#define CLKID_USB_PHY_IN 1
>> > +#define CLKID_USB_CTRL_IN 2
>> > +#define CLKID_HIFIPLL_IN 3
>> > +#define CLKID_SYSPLL_IN 4
>> > +#define CLKID_DDS_IN 5
>> > +#define CLKID_SYS 6
>> > +#define CLKID_CLKTREE 7
>> > +#define CLKID_RESET_CTRL 8
>> > +#define CLKID_ANALOG_CTRL 9
>> > +#define CLKID_PWR_CTRL 10
>> > +#define CLKID_PAD_CTRL 11
>> > +#define CLKID_SYS_CTRL 12
>> > +#define CLKID_TEMP_SENSOR 13
>> > +#define CLKID_AM2AXI_DIV 14
>> > +#define CLKID_SPICC_B 15
>> > +#define CLKID_SPICC_A 16
>> > +#define CLKID_MSR 17
>> > +#define CLKID_AUDIO 18
>> > +#define CLKID_JTAG_CTRL 19
>> > +#define CLKID_SARADC_EN 20
>> > +#define CLKID_PWM_EF 21
>> > +#define CLKID_PWM_CD 22
>> > +#define CLKID_PWM_AB 23
>> > +#define CLKID_CEC 24
>> > +#define CLKID_I2C_S 25
>> > +#define CLKID_IR_CTRL 26
>> > +#define CLKID_I2C_M_D 27
>> > +#define CLKID_I2C_M_C 28
>> > +#define CLKID_I2C_M_B 29
>> > +#define CLKID_I2C_M_A 30
>> > +#define CLKID_ACODEC 31
>> > +#define CLKID_OTP 32
>> > +#define CLKID_SD_EMMC_A 33
>> > +#define CLKID_USB_PHY 34
>> > +#define CLKID_USB_CTRL 35
>> > +#define CLKID_SYS_DSPB 36
>> > +#define CLKID_SYS_DSPA 37
>> > +#define CLKID_DMA 38
>> > +#define CLKID_IRQ_CTRL 39
>> > +#define CLKID_NIC 40
>> > +#define CLKID_GIC 41
>> > +#define CLKID_UART_C 42
>> > +#define CLKID_UART_B 43
>> > +#define CLKID_UART_A 44
>> > +#define CLKID_SYS_PSRAM 45
>> > +#define CLKID_RSA 46
>> > +#define CLKID_CORESIGHT 47
>> > +#define CLKID_AM2AXI_VAD 48
>> > +#define CLKID_AUDIO_VAD 49
>> > +#define CLKID_AXI_DMC 50
>> > +#define CLKID_AXI_PSRAM 51
>> > +#define CLKID_RAMB 52
>> > +#define CLKID_RAMA 53
>> > +#define CLKID_AXI_SPIFC 54
>> > +#define CLKID_AXI_NIC 55
>> > +#define CLKID_AXI_DMA 56
>> > +#define CLKID_CPU_CTRL 57
>> > +#define CLKID_ROM 58
>> > +#define CLKID_PROC_I2C 59
>> > +#define CLKID_DSPA_EN 60
>> > +#define CLKID_DSPA_EN_NIC 61
>> > +#define CLKID_DSPB_EN 62
>> > +#define CLKID_DSPB_EN_NIC 63
>> > +#define CLKID_RTC 64
>> > +#define CLKID_CECA_32K 65
>> > +#define CLKID_CECB_32K 66
>> > +#define CLKID_24M 67
>> > +#define CLKID_12M 68
>> > +#define CLKID_FCLK_DIV2_DIVN 69
>> > +#define CLKID_GEN 70
>> > +#define CLKID_SARADC 71
>> > +#define CLKID_PWM_A 72
>> > +#define CLKID_PWM_B 73
>> > +#define CLKID_PWM_C 74
>> > +#define CLKID_PWM_D 75
>> > +#define CLKID_PWM_E 76
>> > +#define CLKID_PWM_F 77
>> > +#define CLKID_SPICC 78
>> > +#define CLKID_TS 79
>> > +#define CLKID_SPIFC 80
>> > +#define CLKID_USB_BUS 81
>> > +#define CLKID_SD_EMMC 82
>> > +#define CLKID_PSRAM 83
>> > +#define CLKID_DMC 84
>> > +#define CLKID_GEN_SEL 85
>> > +#define CLKID_PWM_A_SEL 86
>> > +#define CLKID_PWM_B_SEL 87
>> > +#define CLKID_PWM_C_SEL 88
>> > +#define CLKID_PWM_D_SEL 89
>> > +#define CLKID_PWM_E_SEL 90
>> > +#define CLKID_PWM_F_SEL 91
>> > +#define CLKID_DSPA_A_SEL 92
>> > +#define CLKID_DSPA_B_SEL 93
>> > +#define CLKID_DSPB_A_SEL 94
>> > +#define CLKID_DSPB_B_SEL 95
>> > +#define CLKID_CECA_32K_SEL 96
>> > +#define CLKID_CECB_32K_SEL 97
>> > +#define NR_CLKS 98
>> > +
>> > +#endif /* __A1_CLKC_H */
>> > diff --git a/include/dt-bindings/clock/amlogic,a1-pll-clkc.h b/include/dt-bindings/clock/amlogic,a1-pll-clkc.h
>> > new file mode 100644
>> > index 000000000000..740fe8c4db5d
>> > --- /dev/null
>> > +++ b/include/dt-bindings/clock/amlogic,a1-pll-clkc.h
>> > @@ -0,0 +1,21 @@
>> > +/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
>> > +/*
>> > + * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
>> > + * Author: Jian Hu <jian.hu@...ogic.com>
>> > + *
>> > + * Copyright (c) 2023, SberDevices. All Rights Reserved.
>> > + * Author: Dmitry Rokosov <ddrokosov@...rdevices.ru>
>> > + */
>> > +
>> > +#ifndef __A1_PLL_CLKC_H
>> > +#define __A1_PLL_CLKC_H
>> > +
>> > +#define CLKID_FIXED_PLL 0
>> > +#define CLKID_FCLK_DIV2 1
>> > +#define CLKID_FCLK_DIV3 2
>> > +#define CLKID_FCLK_DIV5 3
>> > +#define CLKID_FCLK_DIV7 4
>> > +#define CLKID_HIFI_PLL 5
>> > +#define NR_PLL_CLKS 6
>> > +
>> > +#endif /* __A1_PLL_CLKC_H */
>>
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