e-ink display initialize value

kawaguchijunich — Thu, 07 Sep 2017 04:47:47 GMT

I want to rebuild the firmware of I.MX7 sabre board, and to
control the e-ink display of 6.25inch/13.3inch/31.2/42inch.

The Yocto project was introduced according to the following manual.
i.MX Yocto Project User's Guide, Rev. 0, 10/2016

Please let me question here about the EPD control in Japan,
because it was a thing that it is not possible to support it.

e-ink display name is following.
ES063TD1　 6.25 inch BW
ED133UT2 13.3 inch BW
ED312TT2 31.2 inch BW
EC312TT2 31.2 inch Color
ED420TT1 42 inch BW

I want you to know these parameters that controls each e-ink display.
･kernel boot parameters
･struct fb_videomode
･imx_epdc_fb_mode panel_modes

mxc_epdc_v2_fb.c show default e-ink display
static struct fb_videomode ed060xh2c1mode = {
.name = "ED060XH2C1",
.refresh = 85,
.xres = 1024,
.yres = 758,
.pixclock = 40000000,
.left_margin = 12,
.right_margin = 76,
.upper_margin = 4,
.lower_margin = 5,
.hsync_len = 12,
.vsync_len = 2,
.sync = 0,
.vmode = FB_VMODE_NONINTERLACED,
.flag = 0,
};

static struct imx_epdc_fb_mode panel_modes[] = {
{
  &ed060xh2c1mode, /* struct fb_videomode *mode */
  4, /* vscan_holdoff */
  10, /* sdoed_width */
  20, /* sdoed_delay */
  10, /* sdoez_width */
  20, /* sdoez_delay */
  524, /* GDCLK_HP */
  327, /* GDSP_OFF */
  0, /* GDOE_OFF */
  19, /* gdclk_offs */
  1, /* num_ce */
},

I am being interested in this thread.
https://community.nxp.com/thread/456655
I.MX7Dual - EPDC ED133UT2 - display problem

best regards.

Re: e-ink display initialize value

gusarambula — Thu, 14 Sep 2017 21:26:25 GMT

Hello Kawaguchi Junichi,

You should ask eInk of the EPD manufacturer for the panel’s waveform (.wfb) and the parameters (clock frequency, resolution etc.) and open a Case in nxp.com/support with both items attached. You should then receive a parsed waveform and also the right structure for your panel.

I hope this information helps.

Regards,

Re: e-ink display initialize value

kawaguchijunich — Fri, 15 Sep 2017 09:18:34 GMT

Hello gusarambula-san,

I understood what you said.
I newly issue the ticket to NXP Technical Support.

Best Regards,

Junichi

topic Re: e-ink display initialize value in i.MX Processors

e-ink display initialize value

Re: e-ink display initialize value

Re: e-ink display initialize value