Linux/AM5718: Question about the HDMI error log.

henry kim

Intellectual 590 points

Part Number: AM5718

Tool/software: Linux

Hi,

The customer connected the LCD board to the HDMI port of AM5718 using an HDMI cable(about 10cm).

HDMI_receiver_LCD.pdf

MDCU_HDMI.pdf

An error occurs intermittently as follows.

When the following log occurs, a process using HDMI goes into a standby status and a delay occurs.

HDMIWP: omapdss HDMIWP error: Failed to set PHY power mode to 1

So I wonder what makes the log.

SDK version : ti-processor-sdk-linux-rt-am57xx-evm-05.02.00.10

over 6 years ago

0 Margarita Gashova over 6 years ago

TI__Guru* 80190 points

Hello,

From what I see the error comes from here(hdmi_wp.c):
int hdmi_wp_set_phy_pwr(struct hdmi_wp_data *wp, enum hdmi_phy_pwr val)
{
...
/* Status of the power control of HDMI PHY */
if (hdmi_wait_for_bit_change(wp->base, HDMI_WP_PWR_CTRL, 5, 4, val)
!= val) {
DSSERR("Failed to set PHY power mode to %d\n", val);
return -ETIMEDOUT;
}
...

www.ti.com/.../sprs957g.pdf

BR
Margarita

Processors

Processors forum

Linux/AM5718: Question about the HDMI error log.