[PATCH 00/17] video: dw_hdmi: Support Vendor PHY

[Jagan Teki]

Hi Heiko/Kerver/Anatoloj,

On Mon, Dec 11, 2023 at 2:30 PM Jagan Teki <jagan at amarulasolutions.com> wrote:
>
> Unlike RK3399, Sunxi/Meson DW HDMI the new Rockchip SoC Rk3328 would
> support external vendor PHY with DW HDMI chip.
>
> Support this vendor PHY by adding new platform PHY ops via DW HDMI
> driver and call the respective generic phy from platform driver code.
>
> This series tested in RK3328 with 1080p (1920x1080) resolution.
>
> Patch 0001/0005: Support Vendor PHY
> Patch 0006/0008: VOP extension for win, dsp offsets
> Patch 0009/0010: RK3328 VOP, HDMI clocks
> Patch 0011:      Rockchip Inno HDMI PHY
> Patch 0012:      RK3328 HDMI driver
> Patch 0013:      RK3328 VOP driver
> Patch 0014/0017: Enable HDMI Out for RK3328
>
> Importent:
> One pontential issues is that Linux HDMI out on RK3328 has effected by
> this patchset as I wouldn't find any relation or clue.
>
> [    0.752016] Loading compiled-in X.509 certificates
> [    0.787796] inno_hdmi_phy_rk3328_clk_recalc_rate: parent 24000000
> [    0.788391] inno-hdmi-phy ff430000.phy: inno_hdmi_phy_rk3328_clk_recalc_rate rate 148500000 vco 148500000
> [    0.798353] rockchip-drm display-subsystem: bound ff370000.vop (ops vop_component_ops)
> [    0.799403] dwhdmi-rockchip ff3c0000.hdmi: supply avdd-0v9 not found, using dummy regulator
> [    0.800288] rk_iommu ff373f00.iommu: Enable stall request timed out, status: 0x00004b
> [    0.801131] dwhdmi-rockchip ff3c0000.hdmi: supply avdd-1v8 not found, using dummy regulator
> [    0.802056] rk_iommu ff373f00.iommu: Disable paging request timed out, status: 0x00004b
> [    0.803233] dwhdmi-rockchip ff3c0000.hdmi: Detected HDMI TX controller v2.11a with HDCP (inno_dw_hdmi_phy2)
> [    0.805355] dwhdmi-rockchip ff3c0000.hdmi: registered DesignWare HDMI I2C bus driver
> [    0.808769] rockchip-drm display-subsystem: bound ff3c0000.hdmi (ops dw_hdmi_rockchip_ops)
> [    0.810869] [drm] Initialized rockchip 1.0.0 20140818 for display-subsystem on minor 0
>
> The only way I can use Linux HDMI by disabling IOMMU or support
> disable-iommu link for RK3328 via DT [1].
>
> [1] https://www.spinics.net/lists/devicetree/msg605124.html

Is anyone aware of this issue? I did post the patches for Linux IOMMU
but seems not a proper solution. Any suggestions?

Thanks,
Jagan.