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zephyr-cp: add board buses to the nRF54L DKs and the nRF54L15 Tag #11618

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Merged
tannewt merged 1 commit into from
Oct 20, 2026
+73 −2
Merged

zephyr-cp: add board buses to the nRF54L DKs and the nRF54L15 Tag #11618

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6 changes: 6 additions & 0 deletions ports/zephyr-cp/boards/nordic/nrf54l15dk/circuitpython.toml
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Original file line number Diff line number Diff line change
@@ -1 +1,7 @@
CIRCUITPY_BUILD_EXTENSIONS = ["hex", "signed.bin"]

# QFN48 package pin numbers.
[pins]
# board.UART() pins: P0.00/P0.01, the debugger's VCOM0 serial port.
TX = 23
RX = 24
51 changes: 49 additions & 2 deletions ports/zephyr-cp/boards/nordic/nrf54l15tag/board.overlay
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Original file line number Diff line number Diff line change
Expand Up @@ -49,13 +49,44 @@
// See "nRF serial instances" in internal-modules/iobroker/README.md for how
// the instances are shared and allocated.
//
// Instance 21 stays with the fixed i2c21 (bme688 and adxl367 hang off it) and
// instance 22 with the fixed spi22 (bmi270). Instance 30 is left alone:
// Instance 21 is i2c21, the bus the bme688 and adxl367 hang off, and instance
// 22 is spi22, the bmi270's bus (its CS is P1.07). Their Zephyr sensor nodes
// are disabled, so both are routed like the others. Instance 30 is left alone:
// uart30 is the console above and i2c30/spi30 share that same peripheral, so
// they must not be enabled. There is no i2c00 on this SoC, so instance 00 can
// only carry spi00 (or uart00).

&pinctrl {
i2c21_dyn_default: i2c21_dyn_default {
group1 {
psels = <NRF_PSEL_DISCONNECTED(TWIM_SDA)>,
<NRF_PSEL_DISCONNECTED(TWIM_SCL)>;
};
};

i2c21_dyn_sleep: i2c21_dyn_sleep {
group1 {
psels = <NRF_PSEL_DISCONNECTED(TWIM_SDA)>,
<NRF_PSEL_DISCONNECTED(TWIM_SCL)>;
};
};

spi22_dyn_default: spi22_dyn_default {
group1 {
psels = <NRF_PSEL_DISCONNECTED(SPIM_SCK)>,
<NRF_PSEL_DISCONNECTED(SPIM_MOSI)>,
<NRF_PSEL_DISCONNECTED(SPIM_MISO)>;
};
};

spi22_dyn_sleep: spi22_dyn_sleep {
group1 {
psels = <NRF_PSEL_DISCONNECTED(SPIM_SCK)>,
<NRF_PSEL_DISCONNECTED(SPIM_MOSI)>,
<NRF_PSEL_DISCONNECTED(SPIM_MISO)>;
};
};

i2c20_dyn_default: i2c20_dyn_default {
group1 {
psels = <NRF_PSEL_DISCONNECTED(TWIM_SDA)>,
Expand Down Expand Up @@ -87,6 +118,22 @@
};
};

&i2c21 {
status = "okay";
zephyr,deferred-init;
pinctrl-0 = <&i2c21_dyn_default>;
pinctrl-1 = <&i2c21_dyn_sleep>;
pinctrl-names = "default", "sleep";
};

&spi22 {
status = "okay";
zephyr,deferred-init;
pinctrl-0 = <&spi22_dyn_default>;
pinctrl-1 = <&spi22_dyn_sleep>;
pinctrl-names = "default", "sleep";
};

&i2c20 {
status = "okay";
zephyr,deferred-init;
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10 changes: 10 additions & 0 deletions ports/zephyr-cp/boards/nordic/nrf54l15tag/circuitpython.toml
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Original file line number Diff line number Diff line change
@@ -1 +1,11 @@
CIRCUITPY_BUILD_EXTENSIONS = ["hex"]

# QFN48 package pin numbers.
[pins]
# board.I2C() pins: the sensor I2C bus, P1.11/P1.12.
SCL = 39
SDA = 40
# board.SPI() pins: the bmi270's bus, P1.08/P1.06/P1.05.
SCK = 9
MOSI = 7
MISO = 6
8 changes: 8 additions & 0 deletions ports/zephyr-cp/boards/nordic/nrf54lm20dk/circuitpython.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -85,6 +85,14 @@ BUTTON1 = "E8"
BUTTON2 = "F8"
BUTTON3 = "H3"

# board.SPI() pins: the expansion header's SPI positions (header D3/D0/D1).
SCK = "H4"
MOSI = "H7"
MISO = "H6"
# board.UART() pins: P0.06/P0.07, the debugger's VCOM0 serial port.
TX = "H2"
RX = "G3"

# Nordic expansion board header (P17), named per the board silkscreen.
# Positions key the gpio-map order (header GPIO 00-21, odd/even columns from
# the A0/B0 end); I0 sits opposite the header's mid GND and has no gpio-map
Expand Down
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