topic Re: 1024 x 720 support imx8mplus in i.MX Processors

1024 x 720 support imx8mplus

redwanmohamed — Tue, 01 Nov 2022 19:15:25 GMT

Dear NXP team,

want to know support of 1024 x 720 resolution with imx8mplus soc. We have a requiremebt with this non standard resolution hope the dedicated controllers are capable of rescaling to these resolution from the other resolutions received from the cameras to the available display

thanks

AMR

Re: 1024 x 720 support imx8mplus

joanxie — Wed, 02 Nov 2022 02:38:31 GMT

what display do you use? HDMI or LVDS? and what pixel clock of your display?

Re: 1024 x 720 support imx8mplus

redwanmohamed — Wed, 02 Nov 2022 07:00:02 GMT

Thanks @joanxie @for the quick response

for poc we are planning to use https://www.variscite.com/wp-content/uploads/2017/12/VLCD-CAP-GLD-LVDS.pdf but for production it will change

Re: 1024 x 720 support imx8mplus

joanxie — Wed, 02 Nov 2022 07:48:23 GMT

for GKTW70SDAE4SE, this is 800x480 LCD panel, you can refer to the link as below:

"https://variwiki.com/index.php?title=DART-MX8M-PLUS_Display"

"https://github.com/Embedfire/ebf-buster-linux/blob/master/Documentation/devicetree/bindings/display/panel/sgd%2Cgktw70sdae4se.txt"

for imx8mp lvds support, the lvds is sourced from limited PLL as below

static const struct imx_pll14xx_rate_table imx_pll1443x_tbl[] = {
	PLL_1443X_RATE(1039500000U, 173, 2, 1, 16384),
	PLL_1443X_RATE(650000000U, 325, 3, 2, 0),
	PLL_1443X_RATE(594000000U, 198, 2, 2, 0),
	PLL_1443X_RATE(519750000U, 173, 2, 2, 16384),
	PLL_1443X_RATE(393216000U, 262, 2, 3, 9437),
	PLL_1443X_RATE(361267200U, 361, 3, 3, 17511),
};

so couldn't support any pixel clock lvds, you can check if your display meets this or not, if yes, current bsp can support this

Re: 1024 x 720 support imx8mplus

redwanmohamed — Wed, 02 Nov 2022 09:04:16 GMT

So I understand that if display has the capability bsp already has the support

Thanks once again for the quickest response

Re: 1024 x 720 support imx8mplus

joanxie — Fri, 04 Nov 2022 03:03:31 GMT

yes, if you mean GKTW70SDAE4SE