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| author | Emanuele Ghidoli <emanuele.ghidoli@toradex.com> | 2026-03-04 12:48:04 +0100 |
|---|---|---|
| committer | Emanuele Ghidoli <emanuele.ghidoli@toradex.com> | 2026-03-06 10:01:43 +0100 |
| commit | 62ebb60137984dab21e7c4032af1b2b90d46a8be (patch) | |
| tree | d8a3976e0feebeab085f3c516a1e53b39d8c60db | |
| parent | 707040d21aa6bba808f95ef874d764290ff1f2d9 (diff) | |
Reserve lpuart2 (Smarc SER0) on the Cortex-A side, when using it for
the Cortex-M7. As per Smarc specification, this UART, together with
SER1 already used by Cortex-A, should be used for Cortex-M7 console
or debug purposes.
Consider modify MCUXpresso SDK examples to use lpuart2 instead of lpuart3
(Smarc SER2).
Related-to: ELB-6860
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
| -rw-r--r-- | overlays/Makefile | 1 | ||||
| -rw-r--r-- | overlays/toradex-smarc-imx95_reserve-cm7-uart_overlay.dts | 18 |
2 files changed, 19 insertions, 0 deletions
diff --git a/overlays/Makefile b/overlays/Makefile index 7a93c10..97584f0 100644 --- a/overlays/Makefile +++ b/overlays/Makefile @@ -81,6 +81,7 @@ dtb-y += toradex-smarc-imx8mp_spi0-cs0_spidev_overlay.dtbo dtb-y += toradex-smarc-imx8mp_spi0-cs1_spidev_overlay.dtbo dtb-y += toradex-smarc-imx8mp_spi1-cs0_spidev_overlay.dtbo dtb-y += toradex-smarc-imx8mp_spi1-cs1_spidev_overlay.dtbo +dtb-y += toradex-smarc-imx95_reserve-cm7-uart_overlay.dtbo dtb-y += toradex-smarc-imx95_spi0-cs0_spidev_overlay.dtbo dtb-y += toradex-smarc-imx95_spi0-cs1_spidev_overlay.dtbo dtb-y += toradex-smarc-imx95_spi1-cs0_spidev_overlay.dtbo diff --git a/overlays/toradex-smarc-imx95_reserve-cm7-uart_overlay.dts b/overlays/toradex-smarc-imx95_reserve-cm7-uart_overlay.dts new file mode 100644 index 0000000..870a18e --- /dev/null +++ b/overlays/toradex-smarc-imx95_reserve-cm7-uart_overlay.dts @@ -0,0 +1,18 @@ +// SPDX-License-Identifier: GPL-2.0-or-later OR MIT +/* + * Copyright (c) Toradex + * + * Disable uart to allow the Cortex-M7 to use it. + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "toradex,smarc-imx95"; +}; + +/* SMARC SER0 */ +&lpuart2 { + status = "reserved"; +}; |