zynq i2c读取高频读数系统异常 背景:zynq7020 按照1KHz i2c 读取iam20680的数据。 异常结果: cdns-i2c e0004000.i2c: timeout waiting on completion Unable to handle kernel paging request at virtual address 6e1247a0 pgd = c7cb0000[6e1247a0] *pgd=00000000 Internal error: Oops - BUG: 80000005 [#1] ...
"timeout waiting on completion\n"); return -ETIMEDOUT; } cdns_i2c_writereg(CDNS_I2C_IXR_ALL_INTR_MASK, CDNS_I2C_IDR_OFFSET); /* If it is bus arbitration error, try again */ if (id->err_status & CDNS_I2C_IXR_ARB_LOST) return -EAGAIN; Jul 24, 2022 i2c: cadence: Support PEC...
}if(r <0)gotoout;/* * When waiting for completion of a i2c transfer, we need to * set a wake up latency constraint for the MPU. This is to * ensure quick enough wakeup from idle, when transfer * completes. */if(dev->pm_qos) ...
5:Function timed out waiting for ACK/NACK while addressing slave in receiver mode (MR) 6:Function timed out waiting for ACK/NACK while receiving data from the slave 7:Function timed out waiting for successful completion of the Stop bit ...
It should recieve a NAK but it NOT, untill timeout (waited about 1 second). No signal occurs on I2C6 pins. While on other working I2C bus, for example, on i2c-4(Tegra’s I2C5), the result is : ubuntu@tegra-ubuntu:~$ sudo ./i2cset 4 0x03 0x00 ...
dev_warn(dev->dev,"timeout waiting ""for controller reset\n");return-ETIMEDOUT; } mdelay(1); }/* SYSC register is cleared by the reset; rewrite it */if(dev->rev == OMAP_I2C_REV_ON_2430) {omap_i2c_write_reg(dev, OMAP_I2C_SYSC_REG, ...
|/*Let the user know if i2c is in a bad state*/|if(time_after(jiffies, delay)) { |dev_err(dev->dev,"controller timed out"|"waiting for start condition to finish\n"); |return-ETIMEDOUT; |}|cpu_relax();|}| |w|= OMAP_I2C_CON_STP; |w&= ~OMAP_I2C_CON_STT; |omap_i2c_wri...
iproc_smb_reg_write((unsignedlong)dev->block_base_addr +CCB_SMB_MSTRCMD_REG, regval);if(dev->enable_evts ==ENABLE_INTR) {/** Block waiting for the transaction to finish. When it's finished, * we'll be signaled by an interrupt*/time_left= wait_for_completion_timeout(&dev->ses_...
After booting, I can see the device file: /dev/i2c-0, but when I use i2cdetect to test it, timeout messages are printed: root@zynq7020:~ # i2cdetect -y -r 0 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: cdns-i2c e0004000.i2c: timeout waiting...
i2c: timeout waiting on completion cdns-i2c e0004000.i2c: timeout waiting on completion xlnx-pl-disp amba_pl:xlnx_pl_disp: [drm] Cannot find any crtc or sizes Check your i2c hardware connection again Usually i2c timeout is caused by connection problem Expand Post Selected as Best...