[PATCH v3 2/2] dt-bindings: nand: meson: refine Amlogic NAND controller driver
Liang.Yang
liang.yang at amlogic.com
Fri Mar 18 23:17:08 PDT 2022
Hi Neil,
On 2022/3/18 21:59, Neil Armstrong wrote:
> [ EXTERNAL EMAIL ]
>
> Hi,
>
> On 18/03/2022 13:41, Liang Yang wrote:
>> convert txt to yaml and refine the meson NFC clock document.
>>
>> Signed-off-by: Liang Yang <liang.yang at amlogic.com>
>> ---
>> .../bindings/mtd/amlogic,meson-nand.txt | 60 ----------------
>> .../bindings/mtd/amlogic,meson-nand.yaml | 71 +++++++++++++++++++
>> 2 files changed, 71 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 at 7000 {
>> - compatible = "amlogic,meson-axg-mmc-clkc", "syscon";
>> - reg = <0x0 0x7000 0x0 0x800>;
>> - };
>> -
>> - nand-controller at 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 at 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..4de4962a40b7
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>> @@ -0,0 +1,71 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/clock/amlogic,mmc-clkc.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Amlogic NAND Flash Controller (NFC) for GXBB/GXL/AXG family SoCs
>> +
>> +maintainers:
>> + - liang.yang at amlogic.com
>> +
>> +properties:
>> + compatible:
>> + enum:
>> + - "amlogic,meson-gxl-nfc"
>> + - "amlogic,meson-axg-nfc"
>> +
>> + reg:
>> + maxItems: 2
>
> reg-names:
> items:
> - const: nfc
> - const: mmc
>
> Is missing to conform to the example
ok, i will add it.
>
>> +
>> + interrupts:
>> + maxItems: 1
>> +
>> + clocks:
>> + maxItems: 2
>> +
>> + clock-names:
>> + items:
>> + - const: "core", "device"
>
> This should be:
> clock-names:
> items:
> - const: core
> - const: device
ok, i will fix it.
>
>> +
>> + "#clock-cells":
>> + const: 1
>> +
>> +required:
>> + - compatible
>> + - reg
>
> + reg-names
ok
>
>> + - interrupts
>> + - clocks
>> + - clock-names
>> + - "#clock-cells"
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> + - |
>> + nand-controller at 7800 {
>> + compatible = "amlogic,meson-axg-nfc";
>> + reg = <0x0 0x7800 0x0 0x100>,
>> + <0x0 0x7000 0x0 0x800>;
>> + reg-names = "nfc", "emmc";
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + interrupts = <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>;
>> +
>> + clocks = <&clkc CLKID_SD_EMMC_C>,
>> + <&clkc CLKID_FCLK_DIV2>;
>> + clock-names = "core", "device";
>> +
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&nand_pins>;
>> +
>> + nand at 0 {
>> + reg = <0>;
>> + #address-cells = <1>;
>> + #size-cells = <1>;
>> +
>> + nand-on-flash-bbt;
>> + };
>> + };
>> +
>> +...
>
> Don't forgot to run :
> make ARCH=-arm64 dt_binding_check
> DT_SCHEMA_FILES=Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>
>
> after installing the DT schema validator:
> pip3 install git+https://github.com/devicetree-org/dt-schema.git@master
>
> as documented at
> https://www.kernel.org/doc/html/v5.9/devicetree/writing-schema.html
ok
>
> Thanks !
> Neil
>
> .
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