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From: "Pali Rohár" <pali@kernel.org>
To: Andrew Lunn <andrew@lunn.ch>,
	Gregory Clement <gregory.clement@bootlin.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Marek Behun <marek.behun@nic.cz>
Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] ARM: dts: turris-omnia: Add mcu node
Date: Fri, 19 Aug 2022 15:11:52 +0200	[thread overview]
Message-ID: <20220819131152.6513-1-pali@kernel.org> (raw)

At i2c address 0x2a is MCU command interface which provides access to GPIOs
connected to Turris Omnia MCU. So define mcu node in Turris Omnia DTS file.

Signed-off-by: Pali Rohár <pali@kernel.org>

---
Same change was already sent to U-Boot project together with driver. As
Turris Omnia DTS file is shared between Linux kernel U-Boot, I'm sending
this change also in Linux. There is a plan to write also Linux driver for
Turris Omnia MCU, like there is already in U-Boot.

https://source.denx.de/u-boot/u-boot/-/commit/832738974806e6264a3d0ac2aaa92d0f662fd128
https://source.denx.de/u-boot/u-boot/-/blob/master/drivers/gpio/turris_omnia_mcu.c
---
 arch/arm/boot/dts/armada-385-turris-omnia.dts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/armada-385-turris-omnia.dts b/arch/arm/boot/dts/armada-385-turris-omnia.dts
index f4878df39753..f655e9229d68 100644
--- a/arch/arm/boot/dts/armada-385-turris-omnia.dts
+++ b/arch/arm/boot/dts/armada-385-turris-omnia.dts
@@ -184,7 +184,13 @@
 			#size-cells = <0>;
 			reg = <0>;
 
-			/* STM32F0 command interface at address 0x2a */
+			/* MCU command i2c API */
+			mcu: mcu@2a {
+				compatible = "cznic,turris-omnia-mcu";
+				reg = <0x2a>;
+				gpio-controller;
+				#gpio-cells = <3>;
+			};
 
 			led-controller@2b {
 				compatible = "cznic,turris-omnia-leds";
-- 
2.20.1


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WARNING: multiple messages have this Message-ID (diff)
From: "Pali Rohár" <pali@kernel.org>
To: Andrew Lunn <andrew@lunn.ch>,
	Gregory Clement <gregory.clement@bootlin.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Marek Behun <marek.behun@nic.cz>
Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] ARM: dts: turris-omnia: Add mcu node
Date: Fri, 19 Aug 2022 15:11:52 +0200	[thread overview]
Message-ID: <20220819131152.6513-1-pali@kernel.org> (raw)

At i2c address 0x2a is MCU command interface which provides access to GPIOs
connected to Turris Omnia MCU. So define mcu node in Turris Omnia DTS file.

Signed-off-by: Pali Rohár <pali@kernel.org>

---
Same change was already sent to U-Boot project together with driver. As
Turris Omnia DTS file is shared between Linux kernel U-Boot, I'm sending
this change also in Linux. There is a plan to write also Linux driver for
Turris Omnia MCU, like there is already in U-Boot.

https://source.denx.de/u-boot/u-boot/-/commit/832738974806e6264a3d0ac2aaa92d0f662fd128
https://source.denx.de/u-boot/u-boot/-/blob/master/drivers/gpio/turris_omnia_mcu.c
---
 arch/arm/boot/dts/armada-385-turris-omnia.dts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/armada-385-turris-omnia.dts b/arch/arm/boot/dts/armada-385-turris-omnia.dts
index f4878df39753..f655e9229d68 100644
--- a/arch/arm/boot/dts/armada-385-turris-omnia.dts
+++ b/arch/arm/boot/dts/armada-385-turris-omnia.dts
@@ -184,7 +184,13 @@
 			#size-cells = <0>;
 			reg = <0>;
 
-			/* STM32F0 command interface at address 0x2a */
+			/* MCU command i2c API */
+			mcu: mcu@2a {
+				compatible = "cznic,turris-omnia-mcu";
+				reg = <0x2a>;
+				gpio-controller;
+				#gpio-cells = <3>;
+			};
 
 			led-controller@2b {
 				compatible = "cznic,turris-omnia-leds";
-- 
2.20.1


             reply	other threads:[~2022-08-19 13:22 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-19 13:11 Pali Rohár [this message]
2022-08-19 13:11 ` [PATCH] ARM: dts: turris-omnia: Add mcu node Pali Rohár
2022-08-31 14:28 ` Pali Rohár
2022-08-31 14:28   ` Pali Rohár
2022-09-01 22:45   ` Andrew Lunn
2022-09-01 22:45     ` Andrew Lunn
2022-09-03  2:39     ` Marek Behún
2022-09-03  2:39       ` Marek Behún
2022-09-03 15:12       ` Andrew Lunn
2022-09-03 15:12         ` Andrew Lunn
2022-09-03 15:27     ` Pali Rohár
2022-09-03 15:27       ` Pali Rohár
2022-09-04  1:02       ` Andrew Lunn
2022-09-04  1:02         ` Andrew Lunn
2022-09-05 16:19       ` Florian Fainelli
2022-09-05 16:19         ` Florian Fainelli
2022-09-05 16:34         ` Krzysztof Kozlowski
2022-09-05 16:34           ` Krzysztof Kozlowski
2022-09-05 17:12           ` Pali Rohár
2022-09-05 17:12             ` Pali Rohár
2022-09-06  6:34             ` Krzysztof Kozlowski
2022-09-06  6:34               ` Krzysztof Kozlowski
2022-09-06  7:24               ` Pali Rohár
2022-09-06  7:24                 ` Pali Rohár

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