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Message-Id: <20240911-mikrobus-dt-v1-5-3ded4dc879e7@beagleboard.org>
Date: Wed, 11 Sep 2024 19:57:22 +0530
From: Ayush Singh <ayush@...gleboard.org>
To: fabien.parent@...aro.org, d-gole@...com, lorforlinux@...gleboard.org,
jkridner@...gleboard.org, robertcnelson@...gleboard.org,
Andrew Davis <afd@...com>, Miguel Ojeda <ojeda@...nel.org>,
Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>,
Gary Guo <gary@...yguo.net>,
Björn Roy Baron <bjorn3_gh@...tonmail.com>,
Benno Lossin <benno.lossin@...ton.me>,
Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>,
Trevor Gross <tmgross@...ch.edu>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Derek Kiernan <derek.kiernan@....com>,
Dragan Cvetic <dragan.cvetic@....com>, Arnd Bergmann <arnd@...db.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Nishanth Menon <nm@...com>,
Vignesh Raghavendra <vigneshr@...com>, Tero Kristo <kristo@...nel.org>
Cc: linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
Ayush Singh <ayush@...gleboard.org>
Subject: [PATCH 5/8] dts: ti: beagleplay: Add mikrobus connector symbols
- I2C, UART, PWM symbols
- MIKROBUS_GPIO defines a gpio-controller that defines the pins in the
following order:
0: PWM
1: INT
2: RX
3: TX
4: SCL
5: SDA
6: MOSI
7: MISO
8: SCK
9: CS
10: RST
11: AN
- PWM should always use channel 0. Use nexus node for routing
Signed-off-by: Ayush Singh <ayush@...gleboard.org>
---
MAINTAINERS | 1 +
arch/arm64/boot/dts/ti/Makefile | 1 +
.../k3-am625-beagleplay-mikrobus-connector0.dtso | 49 ++++++++++++++++++++++
3 files changed, 51 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index d0c18bd7b558..95f228c85a40 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15432,6 +15432,7 @@ F: drivers/usb/image/microtek.*
MIKROBUS CONNECTOR
M: Ayush Singh <ayush@...gleboard.org>
S: Maintained
+F: arch/arm64/boot/dts/ti/k3-am625-beagleplay-mikrobus-connector0.dtso
F: Documentation/devicetree/bindings/connector/mikrobus-connector.yaml
F: drivers/misc/mikrobus.rs
diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index bcd392c3206e..c628954a357b 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -12,6 +12,7 @@
dtb-$(CONFIG_ARCH_K3) += k3-am625-beagleplay.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am625-beagleplay-csi2-ov5640.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-am625-beagleplay-csi2-tevi-ov5640.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-am625-beagleplay-mikrobus-connector0.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-am625-phyboard-lyra-rdk.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am625-sk.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-dahlia.dtb
diff --git a/arch/arm64/boot/dts/ti/k3-am625-beagleplay-mikrobus-connector0.dtso b/arch/arm64/boot/dts/ti/k3-am625-beagleplay-mikrobus-connector0.dtso
new file mode 100644
index 000000000000..81d370249f64
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am625-beagleplay-mikrobus-connector0.dtso
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/**
+ * MikroBUS Overlay for BeaglePlay MikroBUS Connector 0
+ *
+ * Copyright (C) 2024 Ayush Singh <ayush@...gleboard.org>
+ */
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+ __symbols__ {
+ MIKROBUS_CONNECTOR = "/mikrobus-connector0";
+
+ /* GPIO controller for all pins */
+ MIKROBUS_ALL_GPIO = "/mikrobus-connector0";
+
+ /* MikroBUS connector 0 SCL Pin options */
+ MIKROBUS_SCL_MUX_I2C_SCL = "/bus@...00/pinctrl@...00/mikrobus-i2c-default-pins";
+ MIKROBUS_SCL_MUX_DIGITAL = "/bus@...00/pinctrl@...00/mikrobus-i2c-gpio-pins";
+
+ /* MikroBUS connector 0 SDA Pin options */
+ MIKROBUS_SDA_MUX_I2C_SDA = "/bus@...00/pinctrl@...00/mikrobus-i2c-default-pins";
+ MIKROBUS_SDA_MUX_DIGITAL = "/bus@...00/pinctrl@...00/mikrobus-i2c-gpio-pins";
+
+ /* MikroBUS connector 0 UART_TX Pin options */
+ MIKROBUS_TX_MUX_UART_TX = "/bus@...00/pinctrl@...00/mikrobus-uart-default-pins";
+ MIKROBUS_TX_MUX_DIGITAL = "/bus@...00/pinctrl@...00/mikrobus-uart-gpio-pins";
+
+ /* MikroBUS connector 0 UART_RX Pin options */
+ MIKROBUS_RX_MUX_UART_RX = "/bus@...00/pinctrl@...00/mikrobus-uart-default-pins";
+ MIKROBUS_RX_MUX_DIGITAL = "/bus@...00/pinctrl@...00/mikrobus-uart-gpio-pins";
+
+ /* MikroBUS connector 0 PWM Pin options */
+ MIKROBUS_PWM_MUX_PWM = "/bus@...00/pinctrl@...00/mikrobus-pwm-default-pins";
+ MIKROBUS_PWM_MUX_DIGITAL = "/bus@...00/pinctrl@...00/mikrobus-pwm-gpio-pins";
+
+ /* MikroBUS connector 0 uses main_i2c3 for I2C on BeaglePlay */
+ MIKROBUS_SCL_I2C = "/bus@...00/i2c@...30000";
+ MIKROBUS_SDA_I2C = "/bus@...00/i2c@...30000";
+
+ /* MikroBUS connector 0 uses main_uart5 for UART on BeaglePlay */
+ MIKROBUS_TX_UART = "/bus@...00/serial@...0000";
+ MIKROBUS_RX_UART = "/bus@...00/serial@...0000";
+
+ /* MikroBUS connector 0 uses ecap2 for PWM on BeaglePlay */
+ MIKROBUS_PWM_PWM = "/bus@...00/pwm@...20000";
+ };
+};
--
2.46.0
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