i2cdetect and GPIO does not work

Autonomous Machines Jetson & Embedded Systems Jetson TX1
1

Hey, I have two questions:

  1. I am using jetson tx1 P2597 to develop my imx258 driver. I am using oscilloscope to detect CAM_I2C_SCL and CAM_I2C_SDA, and use sudo i2cdetect -r -y 0, sudo i2cdetect -r -y 1 and sudo i2cdetect -r -y 2. Sudo i2cdetect -r -y 3 to detect my TCA9548 device, but no waveform is detected. Which I2C is CAM_I2C_SCL and CAM_I2C_SDA?
  2. I need to pull the GPIO5_CAM_FLASH_EN pin high. I use #define TCA9548_RST_L TEGRA_GPIO(S, 6) and set reset-gpios = <&gpio TCA9548_RST_L GPIO_ACTIVE_HIGH> in TCA9548. Why is this pin not pulled high?
2
  1. CAM_I2C should be the bus 6 have a try i2cdetect -r -y 6
  2. Make sure tca9548 have toggle this gpio pin. Also you can use gpio debugfs to verify this pin. GPIO - eLinux.org