Convert the atmel,hlcdc binding to DT schema format. Align clocks and clock-names properties to clearly indicate that the LCD controller expects lvds_pll_clk when interfaced with the lvds display. This alignment with the specific hardware requirements ensures accurate device tree configuration for systems utilizing the HLCDC IP. Signed-off-by: Dharma Balasubiramani <dharma.b@xxxxxxxxxxxxx> --- Changelog v4 -> v5 - Revert v3 dropping lvds_pll_clk instead add it as an optional clock. - Update minItems to 3. - Update commit message accordingly. v3 -> v4 - Drop lvds_pll_clk, It can be enabled in lvds driver itself. - Update commit message. Note: Since there is no complexities now, I believe that specifying maxitems in the clocks property should be sufficient. v2 -> v3 - Rename hlcdc-display-controller and hlcdc-pwm to generic names. - Modify the description by removing the unwanted comments and '|'. - Modify clock-names simpler. v1 -> v2 - Remove the explicit copyrights. - Modify title (not include words like binding/driver). - Modify description actually describing the hardware and not the driver. - Add details of lvds_pll addition in commit message. - Ref endpoint and not endpoint-base. - Fix coding style. ... .../devicetree/bindings/mfd/atmel,hlcdc.yaml | 99 +++++++++++++++++++ .../devicetree/bindings/mfd/atmel-hlcdc.txt | 56 ----------- 2 files changed, 99 insertions(+), 56 deletions(-) create mode 100644 Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml delete mode 100644 Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt diff --git a/Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml b/Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml new file mode 100644 index 000000000000..4aa36903e755 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml @@ -0,0 +1,99 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/atmel,hlcdc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Atmel's HLCD Controller + +maintainers: + - Nicolas Ferre <nicolas.ferre@xxxxxxxxxxxxx> + - Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx> + - Claudiu Beznea <claudiu.beznea@xxxxxxxxx> + +description: + The Atmel HLCDC (HLCD Controller) IP available on Atmel SoCs exposes two + subdevices, a PWM chip and a Display Controller. + +properties: + compatible: + enum: + - atmel,at91sam9n12-hlcdc + - atmel,at91sam9x5-hlcdc + - atmel,sama5d2-hlcdc + - atmel,sama5d3-hlcdc + - atmel,sama5d4-hlcdc + - microchip,sam9x60-hlcdc + - microchip,sam9x75-xlcdc + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + minItems: 3 + + clock-names: + items: + - const: periph_clk + - const: sys_clk + - const: slow_clk + - const: lvds_pll_clk + minItems: 3 + + display-controller: + $ref: /schemas/display/atmel/atmel,hlcdc-display-controller.yaml + + pwm: + $ref: /schemas/pwm/atmel,hlcdc-pwm.yaml + +required: + - compatible + - reg + - clocks + - clock-names + - interrupts + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/at91.h> + #include <dt-bindings/dma/at91.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + + lcd_controller: lcd-controller@f0030000 { + compatible = "atmel,sama5d3-hlcdc"; + reg = <0xf0030000 0x2000>; + clocks = <&lcdc_clk>, <&lcdck>, <&clk32k>; + clock-names = "periph_clk", "sys_clk", "slow_clk"; + interrupts = <36 IRQ_TYPE_LEVEL_HIGH 0>; + + display-controller { + compatible = "atmel,hlcdc-display-controller"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb888>; + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + + hlcdc_panel_output: endpoint@0 { + reg = <0>; + remote-endpoint = <&panel_input>; + }; + }; + }; + + pwm { + compatible = "atmel,hlcdc-pwm"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lcd_pwm>; + #pwm-cells = <3>; + }; + }; diff --git a/Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt b/Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt deleted file mode 100644 index 7de696eefaed..000000000000 --- a/Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt +++ /dev/null @@ -1,56 +0,0 @@ -Device-Tree bindings for Atmel's HLCDC (High LCD Controller) MFD driver - -Required properties: - - compatible: value should be one of the following: - "atmel,at91sam9n12-hlcdc" - "atmel,at91sam9x5-hlcdc" - "atmel,sama5d2-hlcdc" - "atmel,sama5d3-hlcdc" - "atmel,sama5d4-hlcdc" - "microchip,sam9x60-hlcdc" - "microchip,sam9x75-xlcdc" - - reg: base address and size of the HLCDC device registers. - - clock-names: the name of the 3 clocks requested by the HLCDC device. - Should contain "periph_clk", "sys_clk" and "slow_clk". - - clocks: should contain the 3 clocks requested by the HLCDC device. - - interrupts: should contain the description of the HLCDC interrupt line - -The HLCDC IP exposes two subdevices: - - a PWM chip: see ../pwm/atmel-hlcdc-pwm.txt - - a Display Controller: see ../display/atmel/hlcdc-dc.txt - -Example: - - hlcdc: hlcdc@f0030000 { - compatible = "atmel,sama5d3-hlcdc"; - reg = <0xf0030000 0x2000>; - clocks = <&lcdc_clk>, <&lcdck>, <&clk32k>; - clock-names = "periph_clk","sys_clk", "slow_clk"; - interrupts = <36 IRQ_TYPE_LEVEL_HIGH 0>; - - hlcdc-display-controller { - compatible = "atmel,hlcdc-display-controller"; - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb888>; - #address-cells = <1>; - #size-cells = <0>; - - port@0 { - #address-cells = <1>; - #size-cells = <0>; - reg = <0>; - - hlcdc_panel_output: endpoint@0 { - reg = <0>; - remote-endpoint = <&panel_input>; - }; - }; - }; - - hlcdc_pwm: hlcdc-pwm { - compatible = "atmel,hlcdc-pwm"; - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_lcd_pwm>; - #pwm-cells = <3>; - }; - }; -- 2.25.1
