gtxaspec

/dts-v1/;

/ {
        #address-cells = <0x01>;
        #size-cells = <0x01>;
        compatible = "ingenic,marmot", "ingenic,t41";

        aliases {
                i2c0 = "/apb/i2c@0x10050000";

Native IPv6 behind InCoax (MoCA Access) modems

If your building delivers internet over coax with an InCoax Access modem (for example the A251, fed by an in:xtnd Control C254 in the building's wiring closet), you probably get IPv4 but no IPv6. This is common in apartment buildings served by Webpass / Google Fiber, but the problem is in the InCoax equipment, so other ISPs using it are likely affected too.

This write-up explains why, and shows a workaround that gives you native IPv6, including a prefix delegation, with no tunnel. It was measured with packet captures on both sides of the InCoax controller in one building. Your building may differ, so test before you rely on it.

U-Boot 2013.07-H20250211a (Jun 09 2025 - 21:30:32)

apll_freq = 1200000000 
mpll_freq = 840000000 
vpll_freq = 1000000000

sdram init start
DDR clk rate 840000000
80000e5c 00000000 00000000

[root@Ingenic-uc1_1:~]# mount -t debugfs none /sys/kernel/debug; cat /sys/kernel
/debug/gpio
mount: mounting none on /sys/kernel/debug failed: Device or resource busy
GPIOs 0-31, platform/10010000.pinctrl, GPA:
 gpio-0   (                    |wifi_reset          ) out hi    
 gpio-6   (                    |wl_reg_on           ) out hi    

GPIOs 32-63, platform/10010000.pinctrl, GPB:
 gpio-40  (                    |Power               ) in  hi IRQ

U-Boot SPL 2013.07
Board info: T41NQ

apll_freq = 1104000000 
mpll_freq = 1440000000 
vpll_freq = 1188000000 
sdram init start
DDR clk rate 720000000
DDRP_INNOPHY_PLL_CTRL: 00000028

Clock is the rate the driver requests; in parentheses, the effective rate where the PLL divider rounds it down (inferred from the U-Boot PLL settings, not measured).

SoC	Kernel driver	VPU IP	Clock	Encode	Decode
T10	`soc_vpu` + `jz_nvpu`	Helix family, oldest revision	350 MHz (300)	H.264, JPEG	JPEG
T20	`soc_vpu` + `jz_nvpu`	Helix family ("Hilex")	350 MHz (333)	H.264, JPEG	JPEG
T21	`soc_vpu` + `helix`	Helix	350 MHz (300)	H.264, JPEG	JPEG
T23	`soc_vpu` + `helix` (+IVDC)	Helix, T23 revision + IVDC	450 MHz (400) on thingino 3.10; 600 MHz on SDK 1.3.0 and 4.4	H.264, JPEG	JPEG
T30	`soc_vpu` + `helix` + `radix`	Helix (H.264+JPEG) + Radix (H.265)	350 MHz, one clock for both (333)	H.264, H.265, JPEG	JPEG
T32	`soc_vpu` (3.10) or `ingenic_vpu` (4.4/5.15) + `helix` + `radix`	Hera-v1.2 (H.264+H.265) + JPEG engine + IVDC	500 MHz	H.264, H.265, JPEG	none

root:EeA5H4cQvy0gc:19220:0:99999:7:::
decoded password: v4Ayp>52

[root@Ingenic-uc1_1:~]#         cat /sys/kernel/debug/gpio
GPIOs 0-31, GPIO A:
 gpio-10  (ADC_PIN             ) in  lo
 gpio-20  (sc4336p_reset_1     ) out hi

-- buildroot --
-jX doesn't work as make arguments
cant delete parent folder due to chmod -R a-w $(BR2_EXTERNAL)/buildroot in makefile running make is very slow, randomly, possibly not using jobserver
add build time to finalize screen at the end of the build? update make edit, to work with the new config file format
buildroot sysupgrade forces remap, this should not be enforced, optional.

-- menuconfig --
image sensor qty should be a menu, with 1-4, not a text box

Ingenic SoC Comparison: T23 / T33 / T32Pro Series

1.1 Processor Cores and AI Computing Power

Technical Parameters	T23 Series	T33 Series	T32Pro Series
CPU Architecture	Xburst® 1, MIPS32 ISA	Xburst® 1, MIPS32 ISA + SIMD128 instruction set	Xburst® 1, MIPS32 ISA + SIMD128 instruction set
CPU Clock Speed	1.2 GHz ~ 1.4 GHz	1.0 GHz	1.2 GHz
Cache Configuration	16K I-Cache + 16K D-Cache, 64KB L2 Cache	32KB I-Cache + 32KB D-Cache, 128KB L2 Cache	32KB I-Cache + 32KB D-Cache, 128KB L2 Cache
MCU Configuration	600 MHz RISC-V coprocessor, supporting RV32IMC instruction set	600 MHz RISC-V coprocessor, supporting RV32IMC instruction set	600 MHz RISC-V coprocessor, supporting RV32IMC instruction set

	#!/bin/sh

	LOGTAG="8821_run.sh"

	# Global variables
	RTL_IFACE=""
	WORK_DIR=""

	# ---------------------------------------------------------------------------
	# Supported USB WiFi adapters