topic Re: IPUv3 Dump Reg in i.MX Processors

IPUv3 Dump Reg

cagrisma — Mon, 21 Jan 2013 08:14:50 GMT

Hi everybody,

i have a sabre-lite board which has imx6q. i am using ipu to play video on tv (via tv encoder)

but something problem on video about colors, vibration etc.

So, i decided to dump ipu registers with kernel module programing, shuch as dp or di.

when i write that code, on prink, its hanging

#include <asm/io.h>

#include <linux/module.h>

#include <mach/hardware.h>

MODULE_LICENSE("GPL v2");

static int __init g_init(void)

{

volatile u32 *ipu_base = ioremap(MX6Q_IPU1_ARB_BASE_ADDR , 32);

printk(KERN_ERR "IPU_BASE= %08x\n", *ipu_base);

iounmap(ipu_base);

return 0;

}

// #define MX6Q_IPU1_ARB_BASE_ADDR 0x02400000 declerated in "\arch\arm\plat-mxc\include\mach|mx6.h"

static void __exit g_exit(void)

{

printk(KERN_ERR "exit from module...\n");

}

module_init(g_init);

module_exit(g_exit);

fabio_estevam — Fri, 25 Jan 2013 00:35:41 GMT

Maybe you could share exactly what you are trying to achieve.

There are lots of debug printk's throught the IPU driver that you can use for reference.

cagrisma — Fri, 25 Jan 2013 10:20:21 GMT

On tv that we connect via tv encoder, the video's color confused.

So, i just wanna see the IPU Registers to see how its configured. To understand its configure RGB or YUV, or anything else.

fabio_estevam — Wed, 06 Feb 2013 12:42:56 GMT

Are you using the HDMI output of mx6qsabrelite? Please look carefully at the BSP Release Notes where you can find the correct kernel command line.