Hello Nvidia, I have identified a discrepancy in the CPHY pin connections documented in the Jetson Thor Series Modules Design Guide (DG12084001_v1.2.pdf). Documented Pin Connections: Figure 10-2. Camera CSI C-PHY Connections: CSI_0_CLK_N connects to CPHY_01_A CSI_0_D1_P connects to CPHY_01_B C…

Fixed by changing hardware to match Table 10-1 configuration. Thank you for the support.

Hello, Jetpak: R38.2.1 When i modify the csi5_fops.c file as follows /* Lane polarity */ if (!is_cphy) { unsigned int index = 0; printk("-----------------------------------------------------DPHY\n"); for (index = 0; index < NVCSI_BRICK_NUM_LANES; index++) brick_config.lane_po…

CPHY polarity swizzle support is not yet available. Expected to be supported in future releases.

Hi sgursal, I’ve made further modifications. /* Lane polarity */ if (!is_cphy) { unsigned int index = 0; printk("-----------------------------------------------------DPHY\n"); for (index = 0; index < NVCSI_BRICK_NUM_LANES; index++) brick_config.lane_polarity[index] = (lane_pola…

@sgursal @ShaneCCC [image] Jetson agx orin(32g&64g) cannot light up the camera successfully in cphy mode Jetson AGX Orin The address is incorrect, it’s 11ce0 instead of4738 15a11ce0: NVCSI_PHY_0_NVCSI_CIL_A_POLARITY_SWIZZLE_CTRL_0 = 0x00000000 // 15a1…

hello norman_xu, FYI, there’s correction of [Figure 10-2. Camera CSI C-PHY Connections], the pattern should be CPHY_01_C/CPHY_01_A/CPHY_01_B, which as same as Table 10-1. Thor CSI pin description. [image] norman_xu: CPHY polarity swizzle on AGX Thor may I know which PHY you’re asking? for…

Hi JerryChang, Thank you for the reply. Brick: PHY 0, Mode: C-PHY Could you share the full register addresses (base address + offset) since we lack the TRM documentation?

Argus pipeline don’t support lane swizzle. Your modification in csi5_fops.c/vi5_fops.c only for v4l2-ctl but Argus. Thanks

hello norman_xu, 0x8188000000 is the NVCSI engine base address. NVCSI_PHY_0_NVCSI_CIL_A_POLARITY_SWIZZLE_CTRL_0’s address = 0x818800473a swizzle control same as Orin’s spec, please give it a try, thanks

Hi JerryChang, But 0x818800473a is invalid and cannot be read. [image]

hello norman_xu, when you access to NVCSI engine 0x8188000000 it’s shown 0xff.., it means it cannot be accessed.

Discrepancy in CPHY Pin Mapping Documentation - Jetson Thor Design Guide

Robotics & Edge Computing Jetson Systems Jetson Thor

norman_xu October 28, 2025, 9:34am 8

@sgursal @ShaneCCC

Referring to the AGX Orin register settings mentioned in the forum post.
Is it possible to provide the devmem command for CPHY polarity swizzle on AGX Thor to fix argus_camera display?

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Discrepancy in CPHY Pin Mapping Documentation - Jetson Thor Design Guide

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