dm video question

Hi Simon,

I am trying to coverting mxsfb.c to support dm.

But met the following issue.
"
mxsfb_lcd_bind: Frame buffer size 200400
Video device 'lcdif at 021c8000' cannot allocate frame buffer memory -ensure the device is set up before relocation "

I add "u-boot, dm-pre-reloc" in dts as the following, but no help.

&lcdif {
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_lcdif_dat
                     &pinctrl_lcdif_ctrl
                     &pinctrl_lcdif_reset>;
        display = <&display0>;
        status = "okay";
        u-boot,dm-pre-reloc;

        display0: display {
                bits-per-pixel = <16>;
                bus-width = <24>;
                u-boot,dm-pre-reloc;
                status = "okay";

                display-timings {
                        native-mode = <&timing0>;
                        u-boot,dm-pre-reloc;
                        timing0: timing0 {
                        u-boot,dm-pre-reloc;
                        clock-frequency = <9200000>;
                        hactive = <480>;
                        vactive = <272>;
                        hfront-porch = <8>;
                        hback-porch = <4>;
                        hsync-len = <41>;
                        vback-porch = <2>;
                        vfront-porch = <4>;
                        vsync-len = <10>;

                        hsync-active = <0>;
                        vsync-active = <0>;
                        de-active = <1>;
                        pixelclk-active = <0>;
                        };
                };
        };
};

Hi Peng,

Quoted 11 lines · Peng Fan

Hi Simon,

I am trying to coverting mxsfb.c to support dm.

But met the following issue.
"
mxsfb_lcd_bind: Frame buffer size 200400
Video device 'lcdif at 021c8000' cannot allocate frame buffer memory -ensure the device is set up before relocation "

Quoted 2 lines

I add "u-boot, dm-pre-reloc" in dts as the following, but no help.

Can you check that you have that property in each node leading to the root also? You can use fdtdump to display the tree.

Did you add a bind() method to handle the pre-relocaiton setup?

Quoted 30 lines

&lcdif {
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_lcdif_dat
                     &pinctrl_lcdif_ctrl
                     &pinctrl_lcdif_reset>;
        display = <&display0>;
        status = "okay";
        u-boot,dm-pre-reloc;

        display0: display {
                bits-per-pixel = <16>;
                bus-width = <24>;
                u-boot,dm-pre-reloc;
                status = "okay";

                display-timings {
                        native-mode = <&timing0>;
                        u-boot,dm-pre-reloc;
                        timing0: timing0 {
                        u-boot,dm-pre-reloc;
                        clock-frequency = <9200000>;
                        hactive = <480>;
                        vactive = <272>;
                        hfront-porch = <8>;
                        hback-porch = <4>;
                        hsync-len = <41>;
                        vback-porch = <2>;
                        vfront-porch = <4>;
                        vsync-len = <10>;

Quoted 8 lines

                        hsync-active = <0>;
                        vsync-active = <0>;
                        de-active = <1>;
                        pixelclk-active = <0>;
                        };
                };
        };
};

Regards,
Simon

Hi Simon,

Quoted 17 lines · Simon Glass

Hi Peng,

Quoted 13 lines · Peng Fan

Hi Simon,

I am trying to coverting mxsfb.c to support dm.

But met the following issue.
"
mxsfb_lcd_bind: Frame buffer size 200400
Video device 'lcdif at 021c8000' cannot allocate frame buffer memory -ensure the device is set up before relocation "

I add "u-boot, dm-pre-reloc" in dts as the following, but no help.

Quoted 2 lines

Can you check that you have that property in each node leading to the root also? You can use fdtdump to display the tree.

I did not know that I need to add u-boot,dm-pre-reloc for the nodes in the path of root -> lcdif.

Now I works. Thanks.

Still have a question.
When enabled DM_VIDEO, do you know how to let the screen show a logo, just like what cfb_console supports?