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Date: Fri, 25 Feb 2022 14:24:32 +0800
From: Chen-Yu Tsai <wenst@...omium.org>
To: xinlei.lee@...iatek.com
Cc: thierry.reding@...il.com, u.kleine-koenig@...gutronix.de,
lee.jones@...aro.org, robh+dt@...nel.org, matthias.bgg@...il.com,
jitao.shi@...iatek.com, allen-kh.cheng@...iatek.com,
linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org,
Project_Global_Chrome_Upstream_Group@...iatek.com,
Xinlei Lee <xinlei.lee@...iatek.corp-partner.google.com>
Subject: Re: [v2, 1/4] dt-bindings: pwm: Convert pwm-mtk-disp.txt to mediatek,
pwm-disp.yaml format
On Wed, Feb 16, 2022 at 5:43 PM <xinlei.lee@...iatek.com> wrote:
>
> From: Xinlei Lee <xinlei.lee@...iatek.corp-partner.google.com>
>
> Convert pwm-mtk-disp.txt to mediatek,pwm-disp.yaml format as suggested by maintainer
>
> Signed-off-by: Xinlei Lee <xinlei.lee@...iatek.corp-partner.google.com>
> ---
> .../bindings/pwm/mediatek,pwm-disp.yaml | 71 +++++++++++++++++++
> .../devicetree/bindings/pwm/pwm-mtk-disp.txt | 44 ------------
> 2 files changed, 71 insertions(+), 44 deletions(-)
> create mode 100755 Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml
> delete mode 100644 Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt
>
> diff --git a/Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml b/Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml
> new file mode 100755
> index 000000000000..edf2a2e9ea72
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml
> @@ -0,0 +1,71 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pwm/mediatek,pwm-disp.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek PWM Controller Device Tree Bindings
> +
> +maintainers:
> + - Jitao Shi <jitao.shi@...iatek.com>
> + - Xinlei Lee <xinlei.lee@...iatek.com>
> +
> +properties:
> + compatible:
> + enum:
> + - mediatek,mt2701-disp-pwm
> + - mediatek,mt6595-disp-pwm
> + - mediatek,mt8173-disp-pwm
> + - mediatek,mt8183-disp-pwm
mt8183 was not in the original text file binding. Please split this out.
Also, the combination "mediatek,mt8167-disp-pwm", "mediatek,mt8173-disp-pwm"
is missing.
ChenYu
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + power-domains:
> + maxItems: 1
> +
> + "#pwm-cells":
> + description:
> + Number of cells in a PWM specifier.
> +
> + clocks:
> + items:
> + - description: Main Clock
> + - description: Mm Clock
> +
> + clock-names:
> + items:
> + - const: main
> + - const: mm
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - power-domains
> + - "#pwm-cells"
> + - clocks
> + - clock-names
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/clock/mt8183-clk.h>
> + #include <dt-bindings/interrupt-controller/irq.h>
> + #include <dt-bindings/power/mt8183-power.h>
> +
> + pwm: pwm@...0e000 {
> + compatible = "mediatek,mt8183-disp-pwm";
> + reg = <0x1100e000 0x1000>;
> + interrupts = <GIC_SPI 128 IRQ_TYPE_LEVEL_LOW>;
> + power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
> + #pwm-cells = <2>;
> + clocks = <&topckgen CLK_TOP_MUX_DISP_PWM>,
> + <&infracfg CLK_INFRA_DISP_PWM>;
> + clock-names = "main", "mm";
> + };
> diff --git a/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt b/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt
> deleted file mode 100644
> index 902b271891ae..000000000000
> --- a/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt
> +++ /dev/null
> @@ -1,44 +0,0 @@
> -MediaTek display PWM controller
> -
> -Required properties:
> - - compatible: should be "mediatek,<name>-disp-pwm":
> - - "mediatek,mt2701-disp-pwm": found on mt2701 SoC.
> - - "mediatek,mt6595-disp-pwm": found on mt6595 SoC.
> - - "mediatek,mt8167-disp-pwm", "mediatek,mt8173-disp-pwm": found on mt8167 SoC.
> - - "mediatek,mt8173-disp-pwm": found on mt8173 SoC.
> - - reg: physical base address and length of the controller's registers.
> - - #pwm-cells: must be 2. See pwm.yaml in this directory for a description of
> - the cell format.
> - - clocks: phandle and clock specifier of the PWM reference clock.
> - - clock-names: must contain the following:
> - - "main": clock used to generate PWM signals.
> - - "mm": sync signals from the modules of mmsys.
> - - pinctrl-names: Must contain a "default" entry.
> - - pinctrl-0: One property must exist for each entry in pinctrl-names.
> - See pinctrl/pinctrl-bindings.txt for details of the property values.
> -
> -Example:
> - pwm0: pwm@...1e000 {
> - compatible = "mediatek,mt8173-disp-pwm",
> - "mediatek,mt6595-disp-pwm";
> - reg = <0 0x1401e000 0 0x1000>;
> - #pwm-cells = <2>;
> - clocks = <&mmsys CLK_MM_DISP_PWM026M>,
> - <&mmsys CLK_MM_DISP_PWM0MM>;
> - clock-names = "main", "mm";
> - pinctrl-names = "default";
> - pinctrl-0 = <&disp_pwm0_pins>;
> - };
> -
> - backlight_lcd: backlight_lcd {
> - compatible = "pwm-backlight";
> - pwms = <&pwm0 0 1000000>;
> - brightness-levels = <
> - 0 16 32 48 64 80 96 112
> - 128 144 160 176 192 208 224 240
> - 255
> - >;
> - default-brightness-level = <9>;
> - power-supply = <&mt6397_vio18_reg>;
> - enable-gpios = <&pio 95 GPIO_ACTIVE_HIGH>;
> - };
> --
> 2.18.0
>
>
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> Linux-mediatek@...ts.infradead.org
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