Add nodes for MIPI DSI and LCDIF on IMX8MM
I'm currently working with a set of patches to convert drm/exynos to a bridge [1] and add IMX8MM support [2] in order to get IMX8MM DSI working for display with a Raspberry Pi DSI touchscreen compatible with a Toshiba TC358762 DSI bridge and Powertip PH800480T013-IDF02 touchscreen.
I had this working on a 5.10 kernel with the old blk-ctl and power-domain drivers that didn't make it into mainline but my 5.15 series with blk-ctl backported from next hangs right after "[drm] Initialized mxsfb-drm 1.0.0 20160824 for 32e00000.lcdif on minor 0" so I assume I have a power-domain not getting enabled.
Please let me know if you see an issue with the way I've configured power-domain or clocks here.
Best Regards,
Tim [1] https://patchwork.kernel.org/project/dri-devel/list/?series=347439&archi... [2] https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=359775&am... --- arch/arm64/boot/dts/freescale/imx8mm.dtsi | 68 +++++++++++++++++++++++ 1 file changed, 68 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi index 208a0ed840f4..195dcbff7058 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi @@ -188,6 +188,12 @@ clock-output-names = "clk_ext4"; };
+ mipi_phy: mipi-video-phy { + compatible = "fsl,imx8mm-mipi-video-phy"; + syscon = <&disp_blk_ctrl>; + #phy-cells = <1>; + }; + psci { compatible = "arm,psci-1.0"; method = "smc"; @@ -1068,6 +1074,68 @@ #size-cells = <1>; ranges = <0x32c00000 0x32c00000 0x400000>;
+ lcdif: lcdif@32e00000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,imx8mm-lcdif", "fsl,imx6sx-lcdif"; + reg = <0x32e00000 0x10000>; + clocks = <&clk IMX8MM_CLK_LCDIF_PIXEL>, + <&clk IMX8MM_CLK_DISP_AXI_ROOT>, + <&clk IMX8MM_CLK_DISP_APB_ROOT>; + clock-names = "pix", "disp_axi", "axi"; + assigned-clocks = <&clk IMX8MM_CLK_LCDIF_PIXEL>, + <&clk IMX8MM_CLK_DISP_AXI>, + <&clk IMX8MM_CLK_DISP_APB>; + assigned-clock-parents = <&clk IMX8MM_VIDEO_PLL1_OUT>, + <&clk IMX8MM_SYS_PLL2_1000M>, + <&clk IMX8MM_SYS_PLL1_800M>; + assigned-clock-rate = <594000000>, <500000000>, <200000000>; + interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>; + power-domains = <&disp_blk_ctrl IMX8MM_DISPBLK_PD_LCDIF>; + status = "disabled"; + + port@0 { + reg = <0>; + + lcdif_to_dsim: endpoint { + remote-endpoint = <&dsim_from_lcdif>; + }; + }; + }; + + mipi_dsi: mipi_dsi@32e10000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,imx8mm-mipi-dsim"; + reg = <0x32e10000 0x400>; + clocks = <&clk IMX8MM_CLK_DSI_CORE>, + <&clk IMX8MM_CLK_DSI_PHY_REF>; + clock-names = "bus_clk", "sclk_mipi"; + assigned-clocks = <&clk IMX8MM_CLK_DSI_CORE>, + <&clk IMX8MM_VIDEO_PLL1_OUT>, + <&clk IMX8MM_CLK_DSI_PHY_REF>; + assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_266M>, + <&clk IMX8MM_VIDEO_PLL1_BYPASS>, + <&clk IMX8MM_VIDEO_PLL1_OUT>; + assigned-clock-rates = <266000000>, <594000000>, <27000000>; + interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>; + phys = <&mipi_phy 0>; + phy-names = "dsim"; + power-domains = <&disp_blk_ctrl IMX8MM_DISPBLK_PD_MIPI_DSI>; + samsung,burst-clock-frequency = <891000000>; + samsung,esc-clock-frequency = <54000000>; + samsung,pll-clock-frequency = <27000000>; + status = "disabled"; + + port@0 { + reg = <0>; + + dsim_from_lcdif: endpoint { + remote-endpoint = <&lcdif_to_dsim>; + }; + }; + }; + csi: csi@32e20000 { compatible = "fsl,imx8mm-csi", "fsl,imx7-csi"; reg = <0x32e20000 0x1000>;