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patches: ncs/zephyr: add patches for nrf91-slm driver
1 parent eeba5c3 commit 9aba6b7

4 files changed

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‎zephyr/patches.yml‎

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patches:
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- path: ncs/zephyr/0001-modem-uart_isr-support-mdm-dtr-gpios.patch
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sha256sum: 53b5acb22a3471b04bb38d297ef4bd5e3a2ed0464ab74b588f30408599307785
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module: zephyr
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author: Marcin Niestroj
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email: m.niestroj@emb.dev
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date: 2026-02-11
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apply-command: >-
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bash -c 'if [ $(west config manifest.file) = "west-ncs.yml" ]; then git am $@; fi' --
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- path: ncs/zephyr/0002-dts-bindings-modem-add-common-autostarts-property.patch
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sha256sum: abbdd4193332e4160dd5c0a29eaa1d0e5fde39b2de510fa215694fcdbdc5785a
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module: zephyr
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author: Marcin Niestroj
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email: m.niestroj@emb.dev
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date: 2026-02-12
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apply-command: >-
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bash -c 'if [ $(west config manifest.file) = "west-ncs.yml" ]; then git am $@; fi' --
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- path: ncs/zephyr/0003-drivers-modem_cellular-add-Ready-signal-handling.patch
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sha256sum: a2e3946a3794f3f19c94cd401755458c48c62a306cd39c924658daa5ca769dbc
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module: zephyr
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author: Marcin Niestroj
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email: m.niestroj@emb.dev
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date: 2026-02-12
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apply-command: >-
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bash -c 'if [ $(west config manifest.file) = "west-ncs.yml" ]; then git am $@; fi' --
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- path: zephyr/zephyr/0001-drivers-net-nsos-support-nrf_bsim.patch
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sha256sum: 76ee96ad695aba17be8a96d8fe908eec937238fbd9e21be09b8ad9a524b8b90b
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module: zephyr

‎zephyr/patches/ncs/zephyr/0001-modem-uart_isr-support-mdm-dtr-gpios.patch‎

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From 741febe08c6cac19648a6c345b5c7486240a9c73 Mon Sep 17 00:00:00 2001
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From: Marcin Niestroj <m.niestroj@emb.dev>
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Date: Wed, 11 Feb 2026 22:31:46 +0100
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Subject: [PATCH] modem: uart_isr: support mdm-dtr-gpios
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---
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subsys/modem/backends/modem_backend_uart_isr.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/subsys/modem/backends/modem_backend_uart_isr.c b/subsys/modem/backends/modem_backend_uart_isr.c
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index 6c6c27c2db2..07112cb1e31 100644
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--- a/subsys/modem/backends/modem_backend_uart_isr.c
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+++ b/subsys/modem/backends/modem_backend_uart_isr.c
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@@ -11,6 +11,7 @@
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LOG_MODULE_REGISTER(modem_backend_uart_isr, CONFIG_MODEM_MODULES_LOG_LEVEL);
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#include <string.h>
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+#include <zephyr/drivers/gpio.h>
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static void modem_backend_uart_isr_flush(struct modem_backend_uart *backend)
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{
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@@ -113,6 +114,9 @@ static int modem_backend_uart_isr_open(void *data)
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ring_buf_reset(&backend->isr.transmit_rb);
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atomic_set(&backend->isr.transmit_buf_len, 0);
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modem_backend_uart_isr_flush(backend);
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+ if (backend->dtr_gpio) {
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+ gpio_pin_set_dt(backend->dtr_gpio, 1);
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+ }
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uart_irq_rx_enable(backend->uart);
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uart_irq_tx_enable(backend->uart);
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modem_pipe_notify_opened(&backend->pipe);
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@@ -228,6 +232,9 @@ static int modem_backend_uart_isr_close(void *data)
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{
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struct modem_backend_uart *backend = (struct modem_backend_uart *)data;
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+ if (backend->dtr_gpio) {
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+ gpio_pin_set_dt(backend->dtr_gpio, 0);
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+ }
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uart_irq_rx_disable(backend->uart);
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uart_irq_tx_disable(backend->uart);
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modem_pipe_notify_closed(&backend->pipe);
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--
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2.53.0
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‎zephyr/patches/ncs/zephyr/0002-dts-bindings-modem-add-common-autostarts-property.patch‎

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From 00bad68c943c8cea837fd5a862c55dd06289d641 Mon Sep 17 00:00:00 2001
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From: Marcin Niestroj <m.niestroj@emb.dev>
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Date: Thu, 12 Feb 2026 09:44:44 +0100
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Subject: [PATCH] dts: bindings: modem: add common 'autostarts' property
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This property can be used by various modems. Used it successfully with
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nRF91-SLM when waiting for "Ready" signal after automatic power-on.
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Signed-off-by: Marcin Niestroj <m.niestroj@emb.dev>
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---
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dts/bindings/modem/quectel,bg95.yaml | 8 --------
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dts/bindings/modem/zephyr,cellular-modem-device.yaml | 7 +++++++
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2 files changed, 7 insertions(+), 8 deletions(-)
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diff --git a/dts/bindings/modem/quectel,bg95.yaml b/dts/bindings/modem/quectel,bg95.yaml
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index 940cd41ea27..8011dd05fbf 100644
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--- a/dts/bindings/modem/quectel,bg95.yaml
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+++ b/dts/bindings/modem/quectel,bg95.yaml
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@@ -10,11 +10,3 @@ include: zephyr,cellular-modem-device.yaml
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properties:
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mdm-power-gpios:
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type: phandle-array
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-
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- autostarts:
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- type: boolean
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- description: |
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- Set for modem variants or carrier boards that start the module
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- automatically when supply voltage is applied—that is, the modem
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- asserts PWRKEY internally and does not require an external PWRKEY
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- pulse.
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diff --git a/dts/bindings/modem/zephyr,cellular-modem-device.yaml b/dts/bindings/modem/zephyr,cellular-modem-device.yaml
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index d2ab0056841..205c0d3e0fb 100644
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--- a/dts/bindings/modem/zephyr,cellular-modem-device.yaml
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+++ b/dts/bindings/modem/zephyr,cellular-modem-device.yaml
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@@ -44,6 +44,13 @@ properties:
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When runtime power management is enabled, this closes the UART.
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This requires modem to support waking up the UART using RING signal.
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+ autostarts:
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+ type: boolean
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+ description: |
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+ Set when the modem starts automatically at power-on without requiring
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+ an external power or reset pulse. When set, the host waits for a ready
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+ indication from the modem before sending AT commands.
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+
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cmux-idle-timeout-ms:
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type: int
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description: Time in milliseconds after which CMUX will enter power save mode.
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--
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2.53.0
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‎zephyr/patches/ncs/zephyr/0003-drivers-modem_cellular-add-Ready-signal-handling.patch‎

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From f39324378c5ecfd4c37153ad0a5793dcf38a115b Mon Sep 17 00:00:00 2001
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From: Marcin Niestroj <m.niestroj@emb.dev>
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Date: Thu, 12 Feb 2026 09:46:16 +0100
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Subject: [PATCH] drivers: modem_cellular: add "Ready" signal handling
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This is the same as "APP RDY", but for other modems, such as nRF-SLM.
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Signed-off-by: Marcin Niestroj <m.niestroj@emb.dev>
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---
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drivers/modem/modem_cellular.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/drivers/modem/modem_cellular.c b/drivers/modem/modem_cellular.c
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index 412ced1dfa8..be075c11070 100644
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--- a/drivers/modem/modem_cellular.c
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+++ b/drivers/modem/modem_cellular.c
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@@ -622,7 +622,8 @@ MODEM_CHAT_MATCHES_DEFINE(unsol_matches,
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MODEM_CHAT_MATCH("+CREG: ", ",", modem_cellular_chat_on_cxreg),
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MODEM_CHAT_MATCH("+CEREG: ", ",", modem_cellular_chat_on_cxreg),
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MODEM_CHAT_MATCH("+CGREG: ", ",", modem_cellular_chat_on_cxreg),
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- MODEM_CHAT_MATCH("APP RDY", "", modem_cellular_chat_on_modem_ready));
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+ MODEM_CHAT_MATCH("APP RDY", "", modem_cellular_chat_on_modem_ready),
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+ MODEM_CHAT_MATCH("Ready", "", modem_cellular_chat_on_modem_ready));
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MODEM_CHAT_MATCHES_DEFINE(abort_matches, MODEM_CHAT_MATCH("ERROR", "", NULL));
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--
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2.53.0
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