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leds: reduce the SWTG018AS-V2.1.0 custom init to the effective registers

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Measured against the generic leds_setup() output on the board: eight of
the 21 stock values are identical to what leds_setup() computes from
the machine's led_mux table, and eight more revert to the generic
values with no change in LED behaviour in any tested link state (copper
2.5G, SFP 2.5G, SFP 10G). Keep the five with a measurable effect: 6528
selects blue over green at 10G, 6540/6548 carry the SFP and copper LED
set behaviour, 65dc enables the LED outputs, and PIN_MUX_0 routes the
blue pin.

Verified from a clean boot on a SWTG018AS-V2.1.0 board: copper solid
green with activity blink at 2.5G on two ports, SFP green at 2.5G,
SFP blue at 10G, LEDs off on link down.
This commit is contained in:
bloqaudio
2026-08-24 23:44:36 -05:00
parent 425283b774
commit 1a743b3889
1 changed files with 8 additions and 27 deletions
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machine_init.c
+8 -27
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@@ -20,34 +20,15 @@ void machine_custom_init(void) __banked
}
#elif defined MACHINE_PCB_SWTG018AS_V2_1_0
// The LED-set encoding cannot express this board's bi-color SFP LED (green <= 2.5G,
// blue at 10G), so program the LED register block with the values the stock firmware
// uses. Runs after leds_setup() and overrides the values computed there.
// The final entry routes the blue-LED pin to the LED controller via PIN_MUX_0;
// as a GPIO (the default) no LED register can drive it. PIN_MUX_1/2 stay
// untouched so SFP detect (GPIO38) and i2c remain GPIOs.
// Stock-firmware values for what the LED-set encoding cannot express: the
// bi-color SFP LED (blue pin at 10G) and the PIN_MUX_0 routing of that pin
// to the LED controller. Runs after leds_setup(), which covers the rest.
static __code const struct { uint16_t reg; uint32_t val; } custom_init_regs[] = {
{ 0x6520, 0x0023e430UL }, // LED_MODE
{ 0x6524, 0xff001400UL }, // LED3_0_SET3
{ 0x6528, 0x00100000UL }, // LED3_0_SET1
{ 0x652c, 0x007f013fUL }, // LED3_2_SET3
{ 0x6530, 0x02000400UL }, // LED1_0_SET3
{ 0x6534, 0x01400141UL }, // LED3_2_SET2
{ 0x6538, 0x01440170UL }, // LED1_0_SET2
{ 0x653c, 0x18000041UL }, // LED3_2_SET1
{ 0x6540, 0x01400155UL }, // LED1_0_SET1
{ 0x6544, 0x01411000UL }, // LED3_2_SET0
{ 0x6548, 0x01740141UL }, // LED1_0_SET0
{ 0x654c, 0x00010000UL }, // LED_PORT_SET_SEL
{ 0x65d8, 0x3ffb6dffUL }, // LED_GLB_ACTIVE
{ 0x65dc, 0x7f24977fUL }, // LED_GLB_IO_EN
{ 0x65e0, 0x08144040UL }, // LED_GLB_MUX_1
{ 0x65e4, 0x10349309UL }, // LED_GLB_MUX_2
{ 0x65e8, 0x12454391UL }, // LED_GLB_MUX_3
{ 0x65ec, 0x19616555UL }, // LED_GLB_MUX_4
{ 0x65f0, 0x1c79d65aUL }, // LED_GLB_MUX_5
{ 0x65f4, 0x0002181dUL }, // LED_GLB_MUX_6
{ 0x7f8c, 0x20db6880UL }, // PIN_MUX_0
{ RTL837X_REG_LED3_0_SET1, 0x00100000UL },
{ RTL837X_REG_LED1_0_SET1, 0x01400155UL },
{ RTL837X_REG_LED1_0_SET0, 0x01740141UL },
{ RTL837X_REG_LED_GLB_IO_EN, 0x7f24977fUL },
{ RTL837X_PIN_MUX_0, 0x20db6880UL },
};
void machine_custom_init(void) __banked