Does or has anyone been able to export and use the CSI CAM gpios? If so, what is their sysfs gpio number? I have checked the wiki on how to use GPIO, and it does claim that it is possible to use the CSI camera GPIOs if one decides not to use the CSI cameras. I have looked into the 5/1/2014 Jetson QA and some of the diffs for the Grinch Kernel and I have found nothing.
Linux tegra-ubuntu 3.10.24-grinch-19.3.7 #2 SMP PREEMPT Sat Nov 1 18:37:58 UTC 2014 armv7l armv7l armv7l GNU/Linux
If that helps.
Thank you for the help.
Here are some notes on GPIO POSSIBLY used for reassignable pursposes…these are “candidates” (or directly useful):
#define sysfs/Serial connector PM375 pin Note
TEGRA_GPIO_PH1 57 J3A1 50 LCD_BL_PWM
TEGRA_GPIO_PH2 58 J3A1 48 LCD_BL_EN
TEGRA_GPIO_PK1 81 J3A1 11 TS_SHDN_L
TEGRA_GPIO_PK2 82 J3A1 17 GPIO_PK2
TEGRA_GPIO_PK4 84 J3A1 13 TS_RESET_L
TEGRA_GPIO_PU0 160 J3A2 40 GPIO_PU0
TEGRA_GPIO_PU1 161 J3A2 43 GPIO_PU1
TEGRA_GPIO_PU2 162 J3A2 46 GPIO_PU2
TEGRA_GPIO_PU3 163 J3A2 49 GPIO_PU3
TEGRA_GPIO_PU4 164 J3A2 52 GPIO_PU4
TEGRA_GPIO_PU5 165 J3A2 55 GPIO_PU5
TEGRA_GPIO_PU6 166 J3A2 58 GPIO_PU6
TEGRA_GPIO_PBB0 216 J3A2 4 CAM2_MCLK
TEGRA_GPIO_PBB3 219 J3A2 5 CAM_RST_L
TEGRA_GPIO_PBB4 220 J3A2 63 CAM_FLASH
TEGRA_GPIO_PBB5 221 J3A2 66 CAM1_PWDN
TEGRA_GPIO_PBB6 222 J3A2 2 CAM2_PWDN
TEGRA_GPIO_PBB7 223 J3A2 60 CAM1_AF_PWDN
TEGRA_GPIO_PCC1 225 J3A2 57 CAM1_GPIO
TEGRA_GPIO_PCC2 226 J3A2 7 CAM2_GPIO
Thank you for reply. This has helped me a lot.
I did some testing and discovered that with my current system PK1,PK2, and PK4 can be used as Outputs. GPIO_PH2 returns as busy. I cannot get PBB0-PBB7 to do anything (input or output). PCC1 and PCC2 work only as inputs. And it is already known that PH1, PU0-PU7 work as GPIOs.