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From: Liang Yang <liang.yang@amlogic.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: <linux-mtd@lists.infradead.org>, Rob Herring <robh+dt@kernel.org>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Jerome Brunet <jbrunet@baylibre.com>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	Kevin Hilman <khilman@baylibre.com>,
	Jianxin Pan <jianxin.pan@amlogic.com>,
	Victor Wan <victor.wan@amlogic.com>,
	XianWei Zhao <xianwei.zhao@amlogic.com>,
	Kelvin Zhang <kelvin.zhang@amlogic.com>,
	BiChao Zheng <bichao.zheng@amlogic.com>,
	YongHui Yu <yonghui.yu@amlogic.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-amlogic@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v4 2/2] dt-bindings: nand: meson: refine Amlogic NAND controller driver
Date: Wed, 20 Apr 2022 19:55:54 +0800	[thread overview]
Message-ID: <b880c64c-7651-c445-4e5e-74cb7a1e76ee@amlogic.com> (raw)
In-Reply-To: <20220420094107.4799f15a@xps13>

Hi Miquel,

On 2022/4/20 15:41, Miquel Raynal wrote:
> [ EXTERNAL EMAIL ]
> 
> Hi Liang,
> 
> liang.yang@amlogic.com wrote on Sat, 2 Apr 2022 15:49:20 +0800:
> 
>> convert txt to yaml and refine the meson NFC clock document.
> 
> We generally prefer to split this into two changes (yaml conversion
> then modifications). You need to be very explicit on the changes you
> bring to this file afterward. Also you may s/refine/fix/ in your title
> if this really is a correction of something that does not work at all as
> you suggest.
ok
> 
> Please mention that due to the other series about the clock changes
> never being accepted the current binding was never valid/working
ok
> (again, I'm not sure it's the case on all Amlogic SoCs, so please be
> very careful about that).
of course.
> 
> And please use a Link: tag to point to the discussion with Neil and
> Jerome on your MMC/NAND subclock final discussion.
ok
> 
>> Signed-off-by: Liang Yang <liang.yang@amlogic.com>
>> ---
>>   .../bindings/mtd/amlogic,meson-nand.txt       | 60 --------------
>>   .../bindings/mtd/amlogic,meson-nand.yaml      | 80 +++++++++++++++++++
>>   2 files changed, 80 insertions(+), 60 deletions(-)
>>   delete mode 100644 Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
>>   create mode 100644 Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
>> deleted file mode 100644
>> index 5794ab1147c1..000000000000
>> --- a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
>> +++ /dev/null
>> @@ -1,60 +0,0 @@
>> -Amlogic NAND Flash Controller (NFC) for GXBB/GXL/AXG family SoCs
>> -
>> -This file documents the properties in addition to those available in
>> -the MTD NAND bindings.
>> -
>> -Required properties:
>> -- compatible : contains one of:
>> -  - "amlogic,meson-gxl-nfc"
>> -  - "amlogic,meson-axg-nfc"
>> -- clocks     :
>> -	A list of phandle + clock-specifier pairs for the clocks listed
>> -	in clock-names.
>> -
>> -- clock-names: Should contain the following:
>> -	"core" - NFC module gate clock
>> -	"device" - device clock from eMMC sub clock controller
>> -	"rx" - rx clock phase
>> -	"tx" - tx clock phase
>> -
>> -- amlogic,mmc-syscon	: Required for NAND clocks, it's shared with SD/eMMC
>> -				controller port C
>> -
>> -Optional children nodes:
>> -Children nodes represent the available nand chips.
>> -
>> -Other properties:
>> -see Documentation/devicetree/bindings/mtd/nand-controller.yaml for generic bindings.
>> -
>> -Example demonstrate on AXG SoC:
>> -
>> -	sd_emmc_c_clkc: mmc@7000 {
>> -		compatible = "amlogic,meson-axg-mmc-clkc", "syscon";
>> -		reg = <0x0 0x7000 0x0 0x800>;
>> -	};
>> -
>> -	nand-controller@7800 {
>> -		compatible = "amlogic,meson-axg-nfc";
>> -		reg = <0x0 0x7800 0x0 0x100>;
>> -		#address-cells = <1>;
>> -		#size-cells = <0>;
>> -		interrupts = <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>;
>> -
>> -		clocks = <&clkc CLKID_SD_EMMC_C>,
>> -			<&sd_emmc_c_clkc CLKID_MMC_DIV>,
>> -			<&sd_emmc_c_clkc CLKID_MMC_PHASE_RX>,
>> -			<&sd_emmc_c_clkc CLKID_MMC_PHASE_TX>;
>> -		clock-names = "core", "device", "rx", "tx";
>> -		amlogic,mmc-syscon = <&sd_emmc_c_clkc>;
>> -
>> -		pinctrl-names = "default";
>> -		pinctrl-0 = <&nand_pins>;
>> -
>> -		nand@0 {
>> -			reg = <0>;
>> -			#address-cells = <1>;
>> -			#size-cells = <1>;
>> -
>> -			nand-on-flash-bbt;
>> -		};
>> -	};
>> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>> new file mode 100644
>> index 000000000000..965a2dd20645
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>> @@ -0,0 +1,80 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/mtd/amlogic,meson-nand.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Amlogic NAND Flash Controller (NFC) for GXBB/GXL/AXG family SoCs
> 
> Maybe you need to inherit from nand-controller.yaml.
ok
> 
>> +
>> +maintainers:
>> +  - liang.yang@amlogic.com
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - "amlogic,meson-gxl-nfc"
>> +      - "amlogic,meson-axg-nfc"
>> +
>> +  reg:
>> +    maxItems: 2
>> +
>> +  '#address-cells':
>> +    const: 1
> 
> Not sure this property is needed.
this is for the subnode, such as nand@0.
> 
>> +
>> +  '#size-cells':
>> +    const: 0
> 
> Ditto. Plus, this one looks wrong anyway.
this is for the subnode, such as nand@0. do you mean s/''/""/?
> 
>> +
>> +  reg-names:
>> +    items:
>> +      - const: nfc
>> +      - const: emmc
> 
> Why do you need the emmc register map? Do you really need to perform a
> register access there?
yes, we have to access the emmc register map. because the NFC clock 
comes from SDEMMC_CLOCK register.
> 
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 2
>> +
>> +  clock-names:
>> +    items:
>> +      - const: core
>> +      - const: device
>> +
>> +  "#clock-cells":
>> +    const: 1
> 
> ?
en, it should be deleted here.
> 
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - '#address-cells'
>> +  - '#size-cells'
>> +  - reg-names
>> +  - interrupts
>> +  - clocks
>> +  - clock-names
>> +
>> +additionalProperties: false
> 
> I will let Rob check that but I think what you need is
> 
> unevaluatedProperties: false
ok
> 
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/clock/axg-clkc.h>
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +    apb {
>> +      #address-cells = <2>;
>> +      #size-cells = <2>;
> 
> Not sure you need this upper node in the example.
use the upper node to indicate the "#address-cells" and "#size-cells". 
if i do not do that, dt_binding_check will report:
  ".....reg:0: [0, 30720, 0, 256] is too long" and
  ".....reg:1: [0, 28672, 0, 2048] is too long".
> 
>> +      nand-controller@7800 {
>> +        #address-cells = <1>;
>> +        #size-cells = <0>;
>> +        compatible = "amlogic,meson-axg-nfc";
>> +        reg = <0x0 0x7800 0x0 0x100>,
>> +              <0x0 0x7000 0x0 0x800>;
>> +        reg-names = "nfc", "emmc";
>> +
>> +        interrupts = <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>;
>> +        clocks = <&clkc CLKID_SD_EMMC_C>,
>> +                 <&clkc CLKID_FCLK_DIV2>;
>> +        clock-names = "core", "device";
>> +
>> +      };
>> +    };
>> +...
> 
> 
> Thanks,
> Miquèl
> 
> .

WARNING: multiple messages have this Message-ID
From: Liang Yang <liang.yang@amlogic.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: <linux-mtd@lists.infradead.org>, Rob Herring <robh+dt@kernel.org>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Jerome Brunet <jbrunet@baylibre.com>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	Kevin Hilman <khilman@baylibre.com>,
	Jianxin Pan <jianxin.pan@amlogic.com>,
	Victor Wan <victor.wan@amlogic.com>,
	XianWei Zhao <xianwei.zhao@amlogic.com>,
	Kelvin Zhang <kelvin.zhang@amlogic.com>,
	BiChao Zheng <bichao.zheng@amlogic.com>,
	YongHui Yu <yonghui.yu@amlogic.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-amlogic@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v4 2/2] dt-bindings: nand: meson: refine Amlogic NAND controller driver
Date: Wed, 20 Apr 2022 19:55:54 +0800	[thread overview]
Message-ID: <b880c64c-7651-c445-4e5e-74cb7a1e76ee@amlogic.com> (raw)
In-Reply-To: <20220420094107.4799f15a@xps13>

Hi Miquel,

On 2022/4/20 15:41, Miquel Raynal wrote:
> [ EXTERNAL EMAIL ]
> 
> Hi Liang,
> 
> liang.yang@amlogic.com wrote on Sat, 2 Apr 2022 15:49:20 +0800:
> 
>> convert txt to yaml and refine the meson NFC clock document.
> 
> We generally prefer to split this into two changes (yaml conversion
> then modifications). You need to be very explicit on the changes you
> bring to this file afterward. Also you may s/refine/fix/ in your title
> if this really is a correction of something that does not work at all as
> you suggest.
ok
> 
> Please mention that due to the other series about the clock changes
> never being accepted the current binding was never valid/working
ok
> (again, I'm not sure it's the case on all Amlogic SoCs, so please be
> very careful about that).
of course.
> 
> And please use a Link: tag to point to the discussion with Neil and
> Jerome on your MMC/NAND subclock final discussion.
ok
> 
>> Signed-off-by: Liang Yang <liang.yang@amlogic.com>
>> ---
>>   .../bindings/mtd/amlogic,meson-nand.txt       | 60 --------------
>>   .../bindings/mtd/amlogic,meson-nand.yaml      | 80 +++++++++++++++++++
>>   2 files changed, 80 insertions(+), 60 deletions(-)
>>   delete mode 100644 Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
>>   create mode 100644 Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
>> deleted file mode 100644
>> index 5794ab1147c1..000000000000
>> --- a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
>> +++ /dev/null
>> @@ -1,60 +0,0 @@
>> -Amlogic NAND Flash Controller (NFC) for GXBB/GXL/AXG family SoCs
>> -
>> -This file documents the properties in addition to those available in
>> -the MTD NAND bindings.
>> -
>> -Required properties:
>> -- compatible : contains one of:
>> -  - "amlogic,meson-gxl-nfc"
>> -  - "amlogic,meson-axg-nfc"
>> -- clocks     :
>> -	A list of phandle + clock-specifier pairs for the clocks listed
>> -	in clock-names.
>> -
>> -- clock-names: Should contain the following:
>> -	"core" - NFC module gate clock
>> -	"device" - device clock from eMMC sub clock controller
>> -	"rx" - rx clock phase
>> -	"tx" - tx clock phase
>> -
>> -- amlogic,mmc-syscon	: Required for NAND clocks, it's shared with SD/eMMC
>> -				controller port C
>> -
>> -Optional children nodes:
>> -Children nodes represent the available nand chips.
>> -
>> -Other properties:
>> -see Documentation/devicetree/bindings/mtd/nand-controller.yaml for generic bindings.
>> -
>> -Example demonstrate on AXG SoC:
>> -
>> -	sd_emmc_c_clkc: mmc@7000 {
>> -		compatible = "amlogic,meson-axg-mmc-clkc", "syscon";
>> -		reg = <0x0 0x7000 0x0 0x800>;
>> -	};
>> -
>> -	nand-controller@7800 {
>> -		compatible = "amlogic,meson-axg-nfc";
>> -		reg = <0x0 0x7800 0x0 0x100>;
>> -		#address-cells = <1>;
>> -		#size-cells = <0>;
>> -		interrupts = <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>;
>> -
>> -		clocks = <&clkc CLKID_SD_EMMC_C>,
>> -			<&sd_emmc_c_clkc CLKID_MMC_DIV>,
>> -			<&sd_emmc_c_clkc CLKID_MMC_PHASE_RX>,
>> -			<&sd_emmc_c_clkc CLKID_MMC_PHASE_TX>;
>> -		clock-names = "core", "device", "rx", "tx";
>> -		amlogic,mmc-syscon = <&sd_emmc_c_clkc>;
>> -
>> -		pinctrl-names = "default";
>> -		pinctrl-0 = <&nand_pins>;
>> -
>> -		nand@0 {
>> -			reg = <0>;
>> -			#address-cells = <1>;
>> -			#size-cells = <1>;
>> -
>> -			nand-on-flash-bbt;
>> -		};
>> -	};
>> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>> new file mode 100644
>> index 000000000000..965a2dd20645
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>> @@ -0,0 +1,80 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/mtd/amlogic,meson-nand.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Amlogic NAND Flash Controller (NFC) for GXBB/GXL/AXG family SoCs
> 
> Maybe you need to inherit from nand-controller.yaml.
ok
> 
>> +
>> +maintainers:
>> +  - liang.yang@amlogic.com
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - "amlogic,meson-gxl-nfc"
>> +      - "amlogic,meson-axg-nfc"
>> +
>> +  reg:
>> +    maxItems: 2
>> +
>> +  '#address-cells':
>> +    const: 1
> 
> Not sure this property is needed.
this is for the subnode, such as nand@0.
> 
>> +
>> +  '#size-cells':
>> +    const: 0
> 
> Ditto. Plus, this one looks wrong anyway.
this is for the subnode, such as nand@0. do you mean s/''/""/?
> 
>> +
>> +  reg-names:
>> +    items:
>> +      - const: nfc
>> +      - const: emmc
> 
> Why do you need the emmc register map? Do you really need to perform a
> register access there?
yes, we have to access the emmc register map. because the NFC clock 
comes from SDEMMC_CLOCK register.
> 
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 2
>> +
>> +  clock-names:
>> +    items:
>> +      - const: core
>> +      - const: device
>> +
>> +  "#clock-cells":
>> +    const: 1
> 
> ?
en, it should be deleted here.
> 
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - '#address-cells'
>> +  - '#size-cells'
>> +  - reg-names
>> +  - interrupts
>> +  - clocks
>> +  - clock-names
>> +
>> +additionalProperties: false
> 
> I will let Rob check that but I think what you need is
> 
> unevaluatedProperties: false
ok
> 
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/clock/axg-clkc.h>
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +    apb {
>> +      #address-cells = <2>;
>> +      #size-cells = <2>;
> 
> Not sure you need this upper node in the example.
use the upper node to indicate the "#address-cells" and "#size-cells". 
if i do not do that, dt_binding_check will report:
  ".....reg:0: [0, 30720, 0, 256] is too long" and
  ".....reg:1: [0, 28672, 0, 2048] is too long".
> 
>> +      nand-controller@7800 {
>> +        #address-cells = <1>;
>> +        #size-cells = <0>;
>> +        compatible = "amlogic,meson-axg-nfc";
>> +        reg = <0x0 0x7800 0x0 0x100>,
>> +              <0x0 0x7000 0x0 0x800>;
>> +        reg-names = "nfc", "emmc";
>> +
>> +        interrupts = <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>;
>> +        clocks = <&clkc CLKID_SD_EMMC_C>,
>> +                 <&clkc CLKID_FCLK_DIV2>;
>> +        clock-names = "core", "device";
>> +
>> +      };
>> +    };
>> +...
> 
> 
> Thanks,
> Miquèl
> 
> .

______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

WARNING: multiple messages have this Message-ID
From: Liang Yang <liang.yang@amlogic.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: <linux-mtd@lists.infradead.org>, Rob Herring <robh+dt@kernel.org>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Jerome Brunet <jbrunet@baylibre.com>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	Kevin Hilman <khilman@baylibre.com>,
	Jianxin Pan <jianxin.pan@amlogic.com>,
	Victor Wan <victor.wan@amlogic.com>,
	XianWei Zhao <xianwei.zhao@amlogic.com>,
	Kelvin Zhang <kelvin.zhang@amlogic.com>,
	BiChao Zheng <bichao.zheng@amlogic.com>,
	YongHui Yu <yonghui.yu@amlogic.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-amlogic@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v4 2/2] dt-bindings: nand: meson: refine Amlogic NAND controller driver
Date: Wed, 20 Apr 2022 19:55:54 +0800	[thread overview]
Message-ID: <b880c64c-7651-c445-4e5e-74cb7a1e76ee@amlogic.com> (raw)
In-Reply-To: <20220420094107.4799f15a@xps13>

Hi Miquel,

On 2022/4/20 15:41, Miquel Raynal wrote:
> [ EXTERNAL EMAIL ]
> 
> Hi Liang,
> 
> liang.yang@amlogic.com wrote on Sat, 2 Apr 2022 15:49:20 +0800:
> 
>> convert txt to yaml and refine the meson NFC clock document.
> 
> We generally prefer to split this into two changes (yaml conversion
> then modifications). You need to be very explicit on the changes you
> bring to this file afterward. Also you may s/refine/fix/ in your title
> if this really is a correction of something that does not work at all as
> you suggest.
ok
> 
> Please mention that due to the other series about the clock changes
> never being accepted the current binding was never valid/working
ok
> (again, I'm not sure it's the case on all Amlogic SoCs, so please be
> very careful about that).
of course.
> 
> And please use a Link: tag to point to the discussion with Neil and
> Jerome on your MMC/NAND subclock final discussion.
ok
> 
>> Signed-off-by: Liang Yang <liang.yang@amlogic.com>
>> ---
>>   .../bindings/mtd/amlogic,meson-nand.txt       | 60 --------------
>>   .../bindings/mtd/amlogic,meson-nand.yaml      | 80 +++++++++++++++++++
>>   2 files changed, 80 insertions(+), 60 deletions(-)
>>   delete mode 100644 Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
>>   create mode 100644 Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
>> deleted file mode 100644
>> index 5794ab1147c1..000000000000
>> --- a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
>> +++ /dev/null
>> @@ -1,60 +0,0 @@
>> -Amlogic NAND Flash Controller (NFC) for GXBB/GXL/AXG family SoCs
>> -
>> -This file documents the properties in addition to those available in
>> -the MTD NAND bindings.
>> -
>> -Required properties:
>> -- compatible : contains one of:
>> -  - "amlogic,meson-gxl-nfc"
>> -  - "amlogic,meson-axg-nfc"
>> -- clocks     :
>> -	A list of phandle + clock-specifier pairs for the clocks listed
>> -	in clock-names.
>> -
>> -- clock-names: Should contain the following:
>> -	"core" - NFC module gate clock
>> -	"device" - device clock from eMMC sub clock controller
>> -	"rx" - rx clock phase
>> -	"tx" - tx clock phase
>> -
>> -- amlogic,mmc-syscon	: Required for NAND clocks, it's shared with SD/eMMC
>> -				controller port C
>> -
>> -Optional children nodes:
>> -Children nodes represent the available nand chips.
>> -
>> -Other properties:
>> -see Documentation/devicetree/bindings/mtd/nand-controller.yaml for generic bindings.
>> -
>> -Example demonstrate on AXG SoC:
>> -
>> -	sd_emmc_c_clkc: mmc@7000 {
>> -		compatible = "amlogic,meson-axg-mmc-clkc", "syscon";
>> -		reg = <0x0 0x7000 0x0 0x800>;
>> -	};
>> -
>> -	nand-controller@7800 {
>> -		compatible = "amlogic,meson-axg-nfc";
>> -		reg = <0x0 0x7800 0x0 0x100>;
>> -		#address-cells = <1>;
>> -		#size-cells = <0>;
>> -		interrupts = <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>;
>> -
>> -		clocks = <&clkc CLKID_SD_EMMC_C>,
>> -			<&sd_emmc_c_clkc CLKID_MMC_DIV>,
>> -			<&sd_emmc_c_clkc CLKID_MMC_PHASE_RX>,
>> -			<&sd_emmc_c_clkc CLKID_MMC_PHASE_TX>;
>> -		clock-names = "core", "device", "rx", "tx";
>> -		amlogic,mmc-syscon = <&sd_emmc_c_clkc>;
>> -
>> -		pinctrl-names = "default";
>> -		pinctrl-0 = <&nand_pins>;
>> -
>> -		nand@0 {
>> -			reg = <0>;
>> -			#address-cells = <1>;
>> -			#size-cells = <1>;
>> -
>> -			nand-on-flash-bbt;
>> -		};
>> -	};
>> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>> new file mode 100644
>> index 000000000000..965a2dd20645
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>> @@ -0,0 +1,80 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/mtd/amlogic,meson-nand.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Amlogic NAND Flash Controller (NFC) for GXBB/GXL/AXG family SoCs
> 
> Maybe you need to inherit from nand-controller.yaml.
ok
> 
>> +
>> +maintainers:
>> +  - liang.yang@amlogic.com
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - "amlogic,meson-gxl-nfc"
>> +      - "amlogic,meson-axg-nfc"
>> +
>> +  reg:
>> +    maxItems: 2
>> +
>> +  '#address-cells':
>> +    const: 1
> 
> Not sure this property is needed.
this is for the subnode, such as nand@0.
> 
>> +
>> +  '#size-cells':
>> +    const: 0
> 
> Ditto. Plus, this one looks wrong anyway.
this is for the subnode, such as nand@0. do you mean s/''/""/?
> 
>> +
>> +  reg-names:
>> +    items:
>> +      - const: nfc
>> +      - const: emmc
> 
> Why do you need the emmc register map? Do you really need to perform a
> register access there?
yes, we have to access the emmc register map. because the NFC clock 
comes from SDEMMC_CLOCK register.
> 
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 2
>> +
>> +  clock-names:
>> +    items:
>> +      - const: core
>> +      - const: device
>> +
>> +  "#clock-cells":
>> +    const: 1
> 
> ?
en, it should be deleted here.
> 
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - '#address-cells'
>> +  - '#size-cells'
>> +  - reg-names
>> +  - interrupts
>> +  - clocks
>> +  - clock-names
>> +
>> +additionalProperties: false
> 
> I will let Rob check that but I think what you need is
> 
> unevaluatedProperties: false
ok
> 
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/clock/axg-clkc.h>
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +    apb {
>> +      #address-cells = <2>;
>> +      #size-cells = <2>;
> 
> Not sure you need this upper node in the example.
use the upper node to indicate the "#address-cells" and "#size-cells". 
if i do not do that, dt_binding_check will report:
  ".....reg:0: [0, 30720, 0, 256] is too long" and
  ".....reg:1: [0, 28672, 0, 2048] is too long".
> 
>> +      nand-controller@7800 {
>> +        #address-cells = <1>;
>> +        #size-cells = <0>;
>> +        compatible = "amlogic,meson-axg-nfc";
>> +        reg = <0x0 0x7800 0x0 0x100>,
>> +              <0x0 0x7000 0x0 0x800>;
>> +        reg-names = "nfc", "emmc";
>> +
>> +        interrupts = <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>;
>> +        clocks = <&clkc CLKID_SD_EMMC_C>,
>> +                 <&clkc CLKID_FCLK_DIV2>;
>> +        clock-names = "core", "device";
>> +
>> +      };
>> +    };
>> +...
> 
> 
> Thanks,
> Miquèl
> 
> .

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WARNING: multiple messages have this Message-ID
From: Liang Yang <liang.yang@amlogic.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: <linux-mtd@lists.infradead.org>, Rob Herring <robh+dt@kernel.org>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Jerome Brunet <jbrunet@baylibre.com>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	Kevin Hilman <khilman@baylibre.com>,
	Jianxin Pan <jianxin.pan@amlogic.com>,
	Victor Wan <victor.wan@amlogic.com>,
	XianWei Zhao <xianwei.zhao@amlogic.com>,
	Kelvin Zhang <kelvin.zhang@amlogic.com>,
	BiChao Zheng <bichao.zheng@amlogic.com>,
	YongHui Yu <yonghui.yu@amlogic.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-amlogic@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v4 2/2] dt-bindings: nand: meson: refine Amlogic NAND controller driver
Date: Wed, 20 Apr 2022 19:55:54 +0800	[thread overview]
Message-ID: <b880c64c-7651-c445-4e5e-74cb7a1e76ee@amlogic.com> (raw)
In-Reply-To: <20220420094107.4799f15a@xps13>

Hi Miquel,

On 2022/4/20 15:41, Miquel Raynal wrote:
> [ EXTERNAL EMAIL ]
> 
> Hi Liang,
> 
> liang.yang@amlogic.com wrote on Sat, 2 Apr 2022 15:49:20 +0800:
> 
>> convert txt to yaml and refine the meson NFC clock document.
> 
> We generally prefer to split this into two changes (yaml conversion
> then modifications). You need to be very explicit on the changes you
> bring to this file afterward. Also you may s/refine/fix/ in your title
> if this really is a correction of something that does not work at all as
> you suggest.
ok
> 
> Please mention that due to the other series about the clock changes
> never being accepted the current binding was never valid/working
ok
> (again, I'm not sure it's the case on all Amlogic SoCs, so please be
> very careful about that).
of course.
> 
> And please use a Link: tag to point to the discussion with Neil and
> Jerome on your MMC/NAND subclock final discussion.
ok
> 
>> Signed-off-by: Liang Yang <liang.yang@amlogic.com>
>> ---
>>   .../bindings/mtd/amlogic,meson-nand.txt       | 60 --------------
>>   .../bindings/mtd/amlogic,meson-nand.yaml      | 80 +++++++++++++++++++
>>   2 files changed, 80 insertions(+), 60 deletions(-)
>>   delete mode 100644 Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
>>   create mode 100644 Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
>> deleted file mode 100644
>> index 5794ab1147c1..000000000000
>> --- a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
>> +++ /dev/null
>> @@ -1,60 +0,0 @@
>> -Amlogic NAND Flash Controller (NFC) for GXBB/GXL/AXG family SoCs
>> -
>> -This file documents the properties in addition to those available in
>> -the MTD NAND bindings.
>> -
>> -Required properties:
>> -- compatible : contains one of:
>> -  - "amlogic,meson-gxl-nfc"
>> -  - "amlogic,meson-axg-nfc"
>> -- clocks     :
>> -	A list of phandle + clock-specifier pairs for the clocks listed
>> -	in clock-names.
>> -
>> -- clock-names: Should contain the following:
>> -	"core" - NFC module gate clock
>> -	"device" - device clock from eMMC sub clock controller
>> -	"rx" - rx clock phase
>> -	"tx" - tx clock phase
>> -
>> -- amlogic,mmc-syscon	: Required for NAND clocks, it's shared with SD/eMMC
>> -				controller port C
>> -
>> -Optional children nodes:
>> -Children nodes represent the available nand chips.
>> -
>> -Other properties:
>> -see Documentation/devicetree/bindings/mtd/nand-controller.yaml for generic bindings.
>> -
>> -Example demonstrate on AXG SoC:
>> -
>> -	sd_emmc_c_clkc: mmc@7000 {
>> -		compatible = "amlogic,meson-axg-mmc-clkc", "syscon";
>> -		reg = <0x0 0x7000 0x0 0x800>;
>> -	};
>> -
>> -	nand-controller@7800 {
>> -		compatible = "amlogic,meson-axg-nfc";
>> -		reg = <0x0 0x7800 0x0 0x100>;
>> -		#address-cells = <1>;
>> -		#size-cells = <0>;
>> -		interrupts = <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>;
>> -
>> -		clocks = <&clkc CLKID_SD_EMMC_C>,
>> -			<&sd_emmc_c_clkc CLKID_MMC_DIV>,
>> -			<&sd_emmc_c_clkc CLKID_MMC_PHASE_RX>,
>> -			<&sd_emmc_c_clkc CLKID_MMC_PHASE_TX>;
>> -		clock-names = "core", "device", "rx", "tx";
>> -		amlogic,mmc-syscon = <&sd_emmc_c_clkc>;
>> -
>> -		pinctrl-names = "default";
>> -		pinctrl-0 = <&nand_pins>;
>> -
>> -		nand@0 {
>> -			reg = <0>;
>> -			#address-cells = <1>;
>> -			#size-cells = <1>;
>> -
>> -			nand-on-flash-bbt;
>> -		};
>> -	};
>> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>> new file mode 100644
>> index 000000000000..965a2dd20645
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>> @@ -0,0 +1,80 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/mtd/amlogic,meson-nand.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Amlogic NAND Flash Controller (NFC) for GXBB/GXL/AXG family SoCs
> 
> Maybe you need to inherit from nand-controller.yaml.
ok
> 
>> +
>> +maintainers:
>> +  - liang.yang@amlogic.com
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - "amlogic,meson-gxl-nfc"
>> +      - "amlogic,meson-axg-nfc"
>> +
>> +  reg:
>> +    maxItems: 2
>> +
>> +  '#address-cells':
>> +    const: 1
> 
> Not sure this property is needed.
this is for the subnode, such as nand@0.
> 
>> +
>> +  '#size-cells':
>> +    const: 0
> 
> Ditto. Plus, this one looks wrong anyway.
this is for the subnode, such as nand@0. do you mean s/''/""/?
> 
>> +
>> +  reg-names:
>> +    items:
>> +      - const: nfc
>> +      - const: emmc
> 
> Why do you need the emmc register map? Do you really need to perform a
> register access there?
yes, we have to access the emmc register map. because the NFC clock 
comes from SDEMMC_CLOCK register.
> 
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 2
>> +
>> +  clock-names:
>> +    items:
>> +      - const: core
>> +      - const: device
>> +
>> +  "#clock-cells":
>> +    const: 1
> 
> ?
en, it should be deleted here.
> 
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - '#address-cells'
>> +  - '#size-cells'
>> +  - reg-names
>> +  - interrupts
>> +  - clocks
>> +  - clock-names
>> +
>> +additionalProperties: false
> 
> I will let Rob check that but I think what you need is
> 
> unevaluatedProperties: false
ok
> 
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/clock/axg-clkc.h>
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +    apb {
>> +      #address-cells = <2>;
>> +      #size-cells = <2>;
> 
> Not sure you need this upper node in the example.
use the upper node to indicate the "#address-cells" and "#size-cells". 
if i do not do that, dt_binding_check will report:
  ".....reg:0: [0, 30720, 0, 256] is too long" and
  ".....reg:1: [0, 28672, 0, 2048] is too long".
> 
>> +      nand-controller@7800 {
>> +        #address-cells = <1>;
>> +        #size-cells = <0>;
>> +        compatible = "amlogic,meson-axg-nfc";
>> +        reg = <0x0 0x7800 0x0 0x100>,
>> +              <0x0 0x7000 0x0 0x800>;
>> +        reg-names = "nfc", "emmc";
>> +
>> +        interrupts = <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>;
>> +        clocks = <&clkc CLKID_SD_EMMC_C>,
>> +                 <&clkc CLKID_FCLK_DIV2>;
>> +        clock-names = "core", "device";
>> +
>> +      };
>> +    };
>> +...
> 
> 
> Thanks,
> Miquèl
> 
> .

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  reply	other threads:[~2022-04-20 11:56 UTC|newest]

Thread overview: 88+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-02  7:49 [PATCH v4 0/2] refine the NFC clock framework Liang Yang
2022-04-02  7:49 ` Liang Yang
2022-04-02  7:49 ` Liang Yang
2022-04-02  7:49 ` Liang Yang
2022-04-02  7:49 ` [PATCH v4 1/2] mtd: rawnand: meson: discard the common MMC sub " Liang Yang
2022-04-02  7:49   ` Liang Yang
2022-04-02  7:49   ` Liang Yang
2022-04-02  7:49   ` Liang Yang
2022-04-04  8:30   ` Miquel Raynal
2022-04-04  8:30     ` Miquel Raynal
2022-04-04  8:30     ` Miquel Raynal
2022-04-04  8:30     ` Miquel Raynal
2022-04-11  2:40     ` Liang Yang
2022-04-11  2:40       ` Liang Yang
2022-04-11  2:40       ` Liang Yang
2022-04-11  2:40       ` Liang Yang
2022-04-11  7:00       ` Miquel Raynal
2022-04-11  7:00         ` Miquel Raynal
2022-04-11  7:00         ` Miquel Raynal
2022-04-11  7:00         ` Miquel Raynal
2022-04-11  9:03         ` Liang Yang
2022-04-11  9:03           ` Liang Yang
2022-04-11  9:03           ` Liang Yang
2022-04-11  9:03           ` Liang Yang
2022-04-18  3:40       ` Liang Yang
2022-04-18  3:40         ` Liang Yang
2022-04-18  3:40         ` Liang Yang
2022-04-18  3:40         ` Liang Yang
2022-04-19  8:26         ` Miquel Raynal
2022-04-19  8:26           ` Miquel Raynal
2022-04-19  8:26           ` Miquel Raynal
2022-04-19  8:26           ` Miquel Raynal
2022-04-19  9:17           ` Liang Yang
2022-04-19  9:17             ` Liang Yang
2022-04-19  9:17             ` Liang Yang
2022-04-19  9:17             ` Liang Yang
2022-04-19 15:25             ` Miquel Raynal
2022-04-19 15:25               ` Miquel Raynal
2022-04-19 15:25               ` Miquel Raynal
2022-04-19 15:25               ` Miquel Raynal
2022-04-20  5:44               ` Liang Yang
2022-04-20  5:44                 ` Liang Yang
2022-04-20  5:44                 ` Liang Yang
2022-04-20  5:44                 ` Liang Yang
2022-04-20  7:29                 ` Miquel Raynal
2022-04-20  7:29                   ` Miquel Raynal
2022-04-20  7:29                   ` Miquel Raynal
2022-04-20  7:29                   ` Miquel Raynal
2022-04-20  8:19                   ` Liang Yang
2022-04-20  8:19                     ` Liang Yang
2022-04-20  8:19                     ` Liang Yang
2022-04-20  8:19                     ` Liang Yang
2022-04-04 12:40   ` Neil Armstrong
2022-04-04 12:40     ` Neil Armstrong
2022-04-04 12:40     ` Neil Armstrong
2022-04-04 12:40     ` Neil Armstrong
2022-04-11  2:44     ` Liang Yang
2022-04-11  2:44       ` Liang Yang
2022-04-11  2:44       ` Liang Yang
2022-04-11  2:44       ` Liang Yang
2022-04-04 14:26   ` kernel test robot
2022-04-04 14:26     ` kernel test robot
2022-04-04 14:26     ` kernel test robot
2022-04-04 14:26     ` kernel test robot
2022-04-05 11:48   ` kernel test robot
2022-04-05 11:48     ` kernel test robot
2022-04-05 11:48     ` kernel test robot
2022-04-05 11:48     ` kernel test robot
2022-04-02  7:49 ` [PATCH v4 2/2] dt-bindings: nand: meson: refine Amlogic NAND controller driver Liang Yang
2022-04-02  7:49   ` Liang Yang
2022-04-02  7:49   ` Liang Yang
2022-04-02  7:49   ` Liang Yang
2022-04-20  7:41   ` Miquel Raynal
2022-04-20  7:41     ` Miquel Raynal
2022-04-20  7:41     ` Miquel Raynal
2022-04-20  7:41     ` Miquel Raynal
2022-04-20 11:55     ` Liang Yang [this message]
2022-04-20 11:55       ` Liang Yang
2022-04-20 11:55       ` Liang Yang
2022-04-20 11:55       ` Liang Yang
2022-04-20 12:16       ` Miquel Raynal
2022-04-20 12:16         ` Miquel Raynal
2022-04-20 12:16         ` Miquel Raynal
2022-04-20 12:16         ` Miquel Raynal
2022-04-20 12:35         ` Liang Yang
2022-04-20 12:35           ` Liang Yang
2022-04-20 12:35           ` Liang Yang
2022-04-20 12:35           ` Liang Yang

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