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HDMI

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Lee Lup Yuen 2023-08-24 14:13:21 +08:00
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@ -5643,6 +5643,8 @@ Here's our analysis of the HDMI Driver in U-Boot:
- [inno_hdmi_enable](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_hdmi.c#L444-L457): Power on HDMI Tx Phy and HDMI TDMS. Start Data Sync. Call [inno_hdmi_detect](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_hdmi.c#L32-L58) and [inno_hdmi_tx_phy_param_config](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_hdmi.c#L389-L425)
([inno_hdmi_enable](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_hdmi.c#L444-L457) is called by [display_enable](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/display-uclass.c#L23-L40), which is called by [sf_display_init](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_vop.c#L369-L655))
- [inno_hdmi_detect](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_hdmi.c#L32-L58): Enable Pre-PLL, Post-PLL, LDO, Serializer
- [inno_hdmi_tx_phy_param_config](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_hdmi.c#L389-L425): Call [inno_hdmi_config_1920x1080p60](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_hdmi.c#L245-L288) and [inno_hdmi_tx_ctrl](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_hdmi.c#L376-L387)
@ -5659,7 +5661,7 @@ And here's our analysis of the Display Driver in U-Boot (which calls the HDMI Dr
- [vout_probe_resources_jh7110](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_vop.c#L250-L367): Enable Clocks noc_disp, vout_src, top_vout_axi, top_vout_ahb, dc_pix0, dc_pix1, dc_axi, dc_core, dc_ahb, hdmitx0_pixelclk. Deassert Resets noc_disp, rst_vout_src, dc8200_rst_axi, dc8200_rst_core, dc8200_rst_ahb. (Similar to [Linux Driver vs_dc_enable](https://lupyuen.github.io/articles/display2#vs_dc_enable))
- [sf_display_init](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_vop.c#L369-L655): Call [dc_hw_init](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_vop.c#L237-L248). Set HDMI Clock Rate. Write to HDMI Registers.
- [sf_display_init](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_vop.c#L369-L655): Call [dc_hw_init](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_vop.c#L237-L248) and [display_enable](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/display-uclass.c#L23-L40). Set HDMI Clock Rate. Write to HDMI Registers.
- [dc_hw_init](https://github.com/starfive-tech/u-boot/blob/JH7110_VisionFive2_devel/drivers/video/starfive/sf_vop.c#L237-L248): Read Hardware Revision and Chip ID (similar to [Linux Driver dc_hw_init](https://lupyuen.github.io/articles/display2))