linux-kernel - [PATCH 2/5] drivers: spi: spidev: add compatible for arduino spi mcu interface

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Message-ID: <20251106153119.266840-3-r.mereu@arduino.cc>
Date: Thu,  6 Nov 2025 16:31:16 +0100
From: Riccardo Mereu <r.mereu.kernel@...uino.cc>
To: andersson@...nel.org,
	konradybcio@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	broonie@...nel.org
Cc: linux@...ck-us.net,
	Jonathan.Cameron@...wei.com,
	wenswang@...h.net,
	naresh.solanki@...ements.com,
	michal.simek@....com,
	nuno.sa@...log.com,
	chou.cosmo@...il.com,
	grantpeltier93@...il.com,
	eajames@...ux.ibm.com,
	farouk.bouabid@...rry.de,
	linux-arm-msm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-spi@...r.kernel.org,
	mm.facchin@...uino.cc,
	Riccardo Mereu <r.mereu@...uino.cc>
Subject: [PATCH 2/5] drivers: spi: spidev: add compatible for arduino spi mcu interface

Add compatible entry in spidev describing in Arduino boards one of the
interfaces between microprocessor and  microcontroller.

Signed-off-by: Riccardo Mereu <r.mereu@...uino.cc>
---
 drivers/spi/spidev.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 5300c942a2a4..f0dd516c2083 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -704,6 +704,7 @@ static const struct class spidev_class = {
  */
 static const struct spi_device_id spidev_spi_ids[] = {
 	{ .name = /* abb */ "spi-sensor" },
+	{ .name = /* arduino */ "mcu" },
 	{ .name = /* cisco */ "spi-petra" },
 	{ .name = /* dh */ "dhcom-board" },
 	{ .name = /* elgin */ "jg10309-01" },
@@ -737,6 +738,7 @@ static int spidev_of_check(struct device *dev)
 
 static const struct of_device_id spidev_dt_ids[] = {
 	{ .compatible = "abb,spi-sensor", .data = &spidev_of_check },
+	{ .compatible = "arduino,mcu", .data = &spidev_of_check },
 	{ .compatible = "cisco,spi-petra", .data = &spidev_of_check },
 	{ .compatible = "dh,dhcom-board", .data = &spidev_of_check },
 	{ .compatible = "elgin,jg10309-01", .data = &spidev_of_check },
-- 
2.51.2