150 lines
4.6 KiB
Plaintext
150 lines
4.6 KiB
Plaintext
Qualcomm Technologies, Inc. MDSS EDP
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MDSS EDP is a edp driver which supports panels that are compatible with
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VESA EDP display interface specification.
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When configuring the optional properties for external backlight, one should also
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configure the gpio that drives the pwm to it.
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Required properties
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- compatible : Must be "qcom,mdss-edp".
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- reg : Offset and length of the register set for the
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device.
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- reg-names : Names to refer to register sets related to this
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device
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- vdda-supply : Phandle for vdd regulator device node.
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- gpio-panel-en : GPIO for supplying power to panel and backlight
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driver.
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- gpio-lvl-en : GPIO to enable HPD be received by host.
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- status : A string that has to be set to "okay/ok" to enable
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the driver. By default this property will be set to
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"disable". Will be set to "ok/okay" status for
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specific platforms.
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- qcom,mdss-fb-map: pHandle that specifies the framebuffer to which the
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interface is mapped.
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- gpio-panel-hpd : gpio pin use for edp hpd
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Optional properties
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- qcom,panel-lpg-channel : LPG channel for backlight.
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- qcom,panel-pwm-period : PWM period in microseconds.
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Optional properties:
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- qcom,mdss-brightness-max-level: Specifies the max brightness level supported.
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255 = default value.
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Example:
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mdss_edp: qcom,mdss_edp@fd923400 {
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compatible = "qcom,mdss-edp";
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reg = <0xfd923400 0x700>,
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<0xfd8c2000 0x1000>;
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reg-names = "edp_base", "mmss_cc_base";
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vdda-supply = <&pm8941_l12>;
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gpio-panel-en = <&msmgpio 58 0>;
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gpio-lvl-en = <&msmgpio 91 0>;
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qcom,panel-lpg-channel = <7>; /* LPG Channel 8 */
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qcom,panel-pwm-period = <53>;
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status = "disable";
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qcom,mdss-fb-map = <&mdss_fb0>;
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gpio-panel-hpd = <&msmgpio 102 0>;
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};
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Example:
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mdss_dp_ctrl: qcom,dp_ctrl@c990000 {
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cell-index = <0>;
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compatible = "qcom,mdss-dp";
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qcom,mdss-fb-map = <&mdss_fb3>;
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gdsc-supply = <&gdsc_mdss>;
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vdda-1p2-supply = <&pm8998_l2>;
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vdda-0p9-supply = <&pm8998_l1>;
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reg = <0xc990000 0xa84>,
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<0xc011000 0x910>,
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<0x1fcb200 0x050>;
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reg-names = "dp_ctrl", "dp_phy", "tcsr_regs";
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clocks = <&clock_mmss clk_mmss_mnoc_ahb_clk>,
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<&clock_mmss clk_mmss_mdss_ahb_clk>,
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<&clock_mmss clk_mmss_mdss_axi_clk>,
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<&clock_mmss clk_mmss_mdss_mdp_clk>,
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<&clock_mmss clk_mmss_mdss_hdmi_dp_ahb_clk>,
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<&clock_mmss clk_mmss_mdss_dp_aux_clk>,
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<&clock_gcc clk_gcc_usb_phy_cfg_ahb2phy_clk>,
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<&clock_mmss clk_mmss_mdss_dp_link_clk>,
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<&clock_mmss clk_mmss_mdss_dp_link_intf_clk>,
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<&clock_mmss clk_mmss_mdss_dp_crypto_clk>,
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<&clock_mmss clk_mmss_mdss_dp_pixel_clk>;
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clock-names = "core_mnoc_clk", "core_iface_clk", "core_bus_clk",
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"core_mdp_core_clk", "core_alt_iface_clk",
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"core_aux_clk", "core_cfg_ahb_clk", "ctrl_link_clk",
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"ctrl_link_iface_clk", "ctrl_crypto_clk", "ctrl_pixel_clk";
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qcom,aux-cfg0-settings = [1c 00];
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qcom,aux-cfg1-settings = [20 13 23 1d];
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qcom,aux-cfg2-settings = [24 00];
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qcom,aux-cfg3-settings = [28 00];
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qcom,aux-cfg4-settings = [2c 0a];
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qcom,aux-cfg5-settings = [30 26];
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qcom,aux-cfg6-settings = [34 0a];
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qcom,aux-cfg7-settings = [38 03];
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qcom,aux-cfg8-settings = [3c bb];
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qcom,aux-cfg9-settings = [40 03];
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qcom,logical2physical-lane-map = [02 03 01 00];
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qcom,phy-register-offset = <0x4>;
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qcom,max-pclk-frequency-khz = <593470>;
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qcom,core-supply-entries {
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#address-cells = <1>;
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#size-cells = <0>;
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qcom,core-supply-entry@0 {
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reg = <0>;
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qcom,supply-name = "gdsc";
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qcom,supply-min-voltage = <0>;
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qcom,supply-max-voltage = <0>;
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qcom,supply-enable-load = <0>;
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qcom,supply-disable-load = <0>;
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};
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};
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qcom,ctrl-supply-entries {
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#address-cells = <1>;
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#size-cells = <0>;
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qcom,ctrl-supply-entry@0 {
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reg = <0>;
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qcom,supply-name = "vdda-1p2";
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qcom,supply-min-voltage = <1200000>;
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qcom,supply-max-voltage = <1200000>;
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qcom,supply-enable-load = <12560>;
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qcom,supply-disable-load = <4>;
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};
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};
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qcom,phy-supply-entries {
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#address-cells = <1>;
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#size-cells = <0>;
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qcom,phy-supply-entry@0 {
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reg = <0>;
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qcom,supply-name = "vdda-0p9";
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qcom,supply-min-voltage = <880000>;
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qcom,supply-max-voltage = <880000>;
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qcom,supply-enable-load = <73400>;
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qcom,supply-disable-load = <32>;
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};
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};
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pinctrl-names = "mdss_dp_active", "mdss_dp_sleep";
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pinctrl-0 = <&mdss_dp_aux_active &mdss_dp_usbplug_cc_active
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&mdss_dp_hpd_active>;
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pinctrl-1 = <&mdss_dp_aux_suspend &mdss_dp_usbplug_cc_suspend
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&mdss_dp_hpd_suspend>;
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qcom,aux-en-gpio = <&tlmm 77 0>;
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qcom,aux-sel-gpio = <&tlmm 78 0>;
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qcom,usbplug-cc-gpio = <&tlmm 38 0>;
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qcom,hpd-gpio = <&tlmm 34 0>;
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};
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