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- Qualcomm MDSS EDP
- MDSS EDP is a edp driver which supports panels that are compatable with
- VESA EDP display interface specification.
- When configuring the optional properties for external backlight, one should also
- configure the gpio that drives the pwm to it.
- Required properties
- - compatible : Must be "qcom,mdss-edp".
- - reg : Offset and length of the register set for the
- device.
- - reg-names : Names to refer to register sets related to this
- device
- - vdda-supply : Phandle for vdd regulator device node.
- - gpio-panel-en : GPIO for supplying power to panel and backlight
- driver.
- - status : A string that has to be set to "okay/ok" to enable
- the driver. By default this property will be set to
- "disable". Will be set to "ok/okay" status for
- specific platforms.
- - qcom,mdss-fb-map: pHandle that specifies the framebuffer to which the
- interface is mapped.
- - gpio-panel-hpd : gpio pin use for edp hpd
- Optional properties:
- - qcom,cont-splash-enabled: Boolean used to enable continuous splash mode.
- - qcom,mdss-brightness-max-level: Specifies the max brightness level supported.
- 255 = default value.
- Example:
- mdss_edp: qcom,mdss_edp@fd923400 {
- compatible = "qcom,mdss-edp";
- reg = <0xfd923400 0x700>,
- <0xfd8c2000 0x1000>;
- reg-names = "edp_base", "mmss_cc_base";
- vdda-supply = <&pm8941_l12>;
- gpio-panel-en = <&msmgpio 58 0>;
- qcom,panel-lpg-channel = <7>; /* LPG Channel 8 */
- qcom,panel-pwm-period = <53>;
- status = "disable";
- qcom,mdss-fb-map = <&mdss_fb0>;
- gpio-panel-hpd = <&msmgpio 102 0>;
- };
- Optional properties
- - qcom,panel-lpg-channel : LPG channel for backlight.
- - qcom,panel-pwm-period : PWM period in microseconds.
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