meson64-6.19: use llm suggestion for overlay README

patch/kernel/archive/meson64-6.19/overlay/README.meson-overlays

@@ -4,28 +4,106 @@ https://docs.armbian.com/User-Guide_Armbian_overlays/
 
 ### Platform:
 
-meson (Amlogic)
+meson / meson64 (Amlogic)
 
 ### Provided overlays:
 
-- i2c8
+#### Generic Meson overlays (works on multiple boards):
+- meson-i2cA
+- meson-i2cB
+- meson-uartA
+- meson-uartC
+- meson-w1-gpio
+- meson-w1AB-gpio
+- meson-g12-gxl-cma-pool-896MB
+- meson-g12-pwm-gpiox-5-fan
+
+#### Radxa Zero (G12A) overlays:
+- meson-g12a-radxa-zero-gpio-8-led
+- meson-g12a-radxa-zero-gpio-10-led
+- meson-g12a-radxa-zero-i2c-ao-m0-gpioao-2-gpioao-3
+- meson-g12a-radxa-zero-i2c-ee-m1-gpioh-6-gpioh-7
+- meson-g12a-radxa-zero-i2c-ee-m1-gpiox-10-gpiox-11
+- meson-g12a-radxa-zero-i2c-ee-m3-gpioa-14-gpioa-15
+- meson-g12a-radxa-zero-pwm-c-on-gpiox-8
+- meson-g12a-radxa-zero-pwmao-a-on-gpioao-11
+- meson-g12a-radxa-zero-spi-spidev
+- meson-g12a-radxa-zero-uart-ao-a-on-gpioao-0-gpioao-1
+- meson-g12a-radxa-zero-uart-ao-b-on-gpioao-2-gpioao-3
+- meson-g12a-radxa-zero-uart-ao-b-on-gpioao-8-gpioao-9
+- meson-g12a-radxa-zero-uart-ee-c
+
+#### Banana Pi (G12B/SM1) overlays:
+- meson-g12b-bananapi-cm4-i2c2
+- meson-g12b-bananapi-cm4-pwm-gpioh-5-fan
+- meson-g12b-bananapi-m2s-rtl8822cs
+- meson-sm1-bananapi-m5-rtl8822cs
+- meson-sm1-bananapi-uartA
+- meson-sm1-bananapi-uartAO_B
+- meson-sm1-bananapi-uartA_cts_rts
+
+#### Odroid overlays:
+- meson-g12b-odroid-n2-spi
 - meson-sm1-odroid-c4-i2c0
 - meson-sm1-odroid-c4-i2c1
 
+#### Other board-specific overlays:
+- meson-g12b-waveshare-cm4-io-base-usb
+- meson-sm1-jethome-jethub-j200-spi
+
 ### Overlay details:
 
-### i2c8
+#### Generic I2C overlays
 
-Activates TWI/I2C bus 8
+**meson-i2cA** / **meson-i2cB**
+Activates I2C bus A or B on compatible Meson boards.
 
-I2C8 pins (SCL, SDA): GPIO1-C4, GPIO1-C5
+#### Generic UART overlays
 
-### meson-sm1-odroid-c4-i2c0
+**meson-uartA** / **meson-uartC**
+Activates UART A or C on compatible Meson boards.
 
-Activates i2c2 bus over GPIOX-17(D3/SDA) and GPIOX-18(D5/SCL)
-Aliased to i2c0 for hardkernel odroid-c4 compatibility
+#### Generic 1-Wire overlays
 
-### meson-sm1-odroid-c4-i2c1
+**meson-w1-gpio** / **meson-w1AB-gpio**
+Activates 1-Wire bus on GPIO pins.
 
-Activates i2c3 bus over GPIOA-14(D27/SDA) and GPIOA-15(D28/SCL)
-Aliased to i2c1 for hardkernel odroid-c4 compatibility
+#### CMA memory pool
+
+**meson-g12-gxl-cma-pool-896MB**
+Configures a 896MB CMA (Contiguous Memory Allocator) pool for G12/GXL platforms, useful for video decoding/encoding.
+
+#### PWM fan control
+
+**meson-g12-pwm-gpiox-5-fan**
+Enables PWM-controlled fan on GPIOX_5 with thermal control for G12 series SoCs (A311D/G12A/G12B/SM1).
+
+#### Radxa Zero overlays
+
+All Radxa Zero overlays are prefixed with `meson-g12a-radxa-zero-` and enable various peripherals:
+- **gpio-8-led** / **gpio-10-led**: GPIO LEDs on GPIOAO_8 or GPIOAO_10
+- **i2c-*** overlays: Enable I2C buses on different pin combinations
+- **pwm-*** overlays: Enable PWM outputs for various purposes
+- **spi-spidev**: Enable SPI with spidev interface
+- **uart-*** overlays: Enable UART interfaces on different pin sets
+
+#### Odroid C4 overlays
+
+**meson-sm1-odroid-c4-i2c0** / **meson-sm1-odroid-c4-i2c1**
+Activates I2C bus 0 or 1 on Odroid C4.
+
+#### Wireless module overlays
+
+**meson-g12b-bananapi-m2s-rtl8822cs** / **meson-sm1-bananapi-m5-rtl8822cs**
+Enables RTL8822CS WiFi/Bluetooth module on Banana Pi M2S and M5 boards.
+
+### GPIO naming convention:
+
+Meson/Amlogic SoCs use the following GPIO naming:
+- GPIOAO_x: Always-On GPIO bank
+- GPIOX_x: Main GPIO bank X
+- GPIOH_x: Main GPIO bank H  
+- GPIOA_x: Main GPIO bank A
+- GPIOBOOT_x: Boot GPIO bank
+
+Refer to your board's pinout diagram for specific pin locations.