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NVIDIA TEGRA114 Display Serial Interface
========================================
1) The dsi node:
dsi node must be contained in host1x parent node. This node represents NVIDIA Tegra114 Display
Serial Interface.
Required properties
- name: dsi
- compatible: Should contain "nvidia,tegra114-dsi".
- reg: Physical base address and length of the controller's registers.
- nvidia,dsi-controller-vs: DSI version. Write 0, 1 for DSI_VS_0 and DSI_VS_1, respectively. For TEGRA114,
it should be 1.
- Child node represents dsi panel node.
1.A) dsi panel node:
dsi panel node must be contained in dsi parent node. This node represents dsi panel node.
Required properties
- name: Can be arbitrary.
- compatible: Can be arbitrary. One panel has its own unique compatible.
- nvidia,dsi-panel-rst-gpio: panel reset gpio.
- nvidia,dsi-panel-bl-en-gpio: backlight enabling gpio.
- nvidia,dsi-panel-bl-pwm-gpio: gpio for backlight pwm signal.
- nvidia,dsi-te-gpio: gpio for panel TE(Tearing Effect) signal.
- nvidia,dsi-n-data-lanes: Number of DSI lanes in use. Should be one of 2, 3, 4, and 8
- nvidia,dsi-video-burst-mode: Video mode. Write 0, 1, 2, 3, 4, 5 and 6 for TEGRA_DSI_VIDEO_NONE_BURST_MODE,
TEGRA_DSI_VIDEO_NONE_BURST_MODE_WITH_SYNC_END, TEGRA_DSI_VIDEO_BURST_MODE_LOWEST_SPEED,
TEGRA_DSI_VIDEO_BURST_MODE_LOW_SPEED, TEGRA_DSI_VIDEO_BURST_MODE_MEDIUM_SPEED,
TEGRA_DSI_VIDEO_BURST_MODE_FAST_SPEED and TEGRA_DSI_VIDEO_BURST_MODE_FASTEST_SPEED,
respectively.
- nvidia,dsi-pixel-format: DSI pixel data format. Write 0, 1, 2, 3 for TEGRA_DSI_PIXEL_FORMAT_16BIT_P,
TEGRA_DSI_PIXEL_FORMAT_18BIT_P, TEGRA_DSI_PIXEL_FORMAT_18BIT_NP and TEGRA_DSI_PIXEL_FORMAT_24BIT_P,
respectively.
- nvidia,dsi-refresh-rate: Refresh rate.
- nvidia,dsi-virtual-channel: DSI virtual channel number. Write 0, 1, 2 and 3 for TEGRA_DSI_VIRTUAL_CHANNEL_0,
TEGRA_DSI_VIRTUAL_CHANNEL_1, TEGRA_DSI_VIRTUAL_CHANNEL_2 and TEGRA_DSI_VIRTUAL_CHANNEL_3, respectively.
- nvidia,dsi-instance: Should be 0 or 1: DSI controller or DSIB controller.
- nvidia,dsi-panel-reset: Indicate if dsi output device requires hardware reset or not.
- nvidia,dsi-power-saving-suspend: With enabled, set dsi controller ultra low power mode in suspend.
- nvidia,dsi-video-data-type: The DSI operates in two transmission modes: video and host/command.
Write 0, 1 for TEGRA_DSI_VIDEO_TYPE_VIDEO_MODE, TEGRA_DSI_VIDEO_TYPE_COMMAND_MODE, respectively.
- nvidia,dsi-video-clock-mode: Control for the hs clock lane. Continuous means hs clock on all the time.
Txonly means only hs clock active during hs transmissions. Write 0, 1 for TEGRA_DSI_VIDEO_CLOCK_CONTINUOUS,
and TEGRA_DSI_VIDEO_CLOCK_TX_ONLY, respectively.
- nvidia,dsi-init-cmd: panel required init command sequence.
- nvidia,dsi-n-init-cmd: command counts of init command sequence, including delay set.
- nvidia,dsi-suspend-cmd: panel required suspend command sequence.
- nvidia,dsi-n-suspend-cmd: command counts of suspend command sequence, including delay set.
- nvidia,dsi-early-suspend-cmd: panel required early suspend command sequence.
- nvidia,dsi-n-early-suspend-cmd: command counts of early suspend command sequence, including delay set.
- nvidia,dsi-late-resume-cmd: panel required late resume command sequence.
- nvidia,dsi-n-late-resume-cmd: command counts of late resume command sequence, including delay set.
- nvidia,dsi-pkt-seq: custom packet sequence since some panels need non standard packet sequence.
- nvidia,dsi-te-gpio: specifies a GPIO used for dsi panel TE signal.
- nvidia,nvidia,dsi-ganged-type: specifies dsi ganged type. 1 for TEGRA_DSI_GANGED_SYMMETRIC_LEFT_RIGHT,
2 for TEGRA_DSI_GANGED_SYMMETRIC_EVEN_ODD.
- nvidia,dsi-phy-hsdexit: dsi phy timing, t_hsdexit_ns.
- nvidia,dsi-phy-hstrail: dsi phy timing, t_hstrail_ns.
- nvidia,dsi-phy-datzero: dsi phy timing, t_datzero_ns.
- nvidia,dsi-phy-hsprepare: dsi phy timing, t_hsprepare_ns.
- nvidia,dsi-phy-clktrail: dsi phy timing, t_clktrail_ns.
- nvidia,dsi-phy-clkpost: dsi phy timing, t_clkpost_ns.
- nvidia,dsi-phy-clkzero: dsi phy timing, t_clkzero_ns.
- nvidia,dsi-phy-tlpx: dsi phy timing, t_tlpx_ns.
- nvidia,dsi-phy-clkprepare: dsi phy timing, t_clkprepare_ns.
- nvidia,dsi-phy-clkpre: dsi phy timing, t_clkpre_ns.
- nvidia,dsi-phy-wakeup: dsi phy timing, t_wakeup_ns.
- nvidia,dsi-phy-taget: dsi phy timing, t_taget_ns.
- nvidia,dsi-phy-tasure: dsi phy timing, t_tasure_ns.
- nvidia,dsi-phy-tago: dsi phy timing, t_tago_ns.
Example
host1x {
dsi {
compatible = "nvidia,tegra114-dsi";
reg = <0x54300000 0x00040000>,
<0x54400000 0x00040000>;
status = "okay";
nvidia,dsi-controller-vs = <1>;
panel-l-wxga-7 {
status = "okay";
compatible = "lg,wxga-7";
nvidia,dsi-instance = <0>;
nvidia,dsi-n-data-lanes = <4>;
nvidia,dsi-pixel-format = <3>;
nvidia,dsi-refresh-rate = <60>;
nvidia,dsi-video-data-type = <0>;
nvidia,dsi-video-clock-mode = <0>;
nvidia,dsi-video-burst-mode = <0>;
nvidia,dsi-virtual-channel = <0>;
nvidia,dsi-power-saving-suspend = <1>;
nvidia,dsi-phy-datzero = <270>;
nvidia,dsi-phy-hsprepare = <30>;
nvidia,dsi-phy-clkzero = <330>;
nvidia,dsi-phy-clkprepare = <27>;
nvidia,dsi-init-cmd = <0x0 0x15 0x01 0x0 0x0>,
<1 20>,
<0x0 0x15 0xae 0x0b 0x0>,
<0x0 0x15 0xee 0xea 0x0>,
<0x0 0x15 0xef 0x5f 0x0>,
<0x0 0x15 0xf2 0x68 0x0>,
<0x0 0x15 0xee 0x0 0x0>,
<0x0 0x15 0xef 0x0 0x0>;
nvidia,dsi-n-init-cmd = <8>;
nvidia,dsi-suspend-cmd = <0x0 0x15 0x11 0x0 0x0>,
<1 160>;
nvidia,dsi-n-suspend-cmd = <2>;
nvidia,dsi-late-resume-cmd = <0x0 0x15 0x10 0x0 0x0>,
<1 120>;
nvidia,dsi-n-late-resume-cmd = <2>;
nvidia,dsi-early-suspend-cmd = <0x0 0x15 0x11 0x0 0x0>,
<1 160>;
nvidia,dsi-n-early-suspend-cmd = <2>;
};
};
};
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