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112 lines
3.4 KiB
Diff
112 lines
3.4 KiB
Diff
From 99d43bf91a8b8ef7135ae25c87b96825fca47d7d Mon Sep 17 00:00:00 2001
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From: Stefan Wahren <stefan.wahren@in-tech.com>
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Date: Thu, 19 Aug 2021 15:34:34 +0200
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Subject: [PATCH 552/552] overlays: Add overlay for QCA7000 via UART0
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This adds an overlay to connect the QCA7000 in UART mode via UART0.
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The qcauart driver uses the serial device bus instead of deprecated
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line disciplines.
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Signed-off-by: Stefan Wahren <stefan.wahren@in-tech.com>
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 11 +++++
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.../dts/overlays/qca7000-uart0-overlay.dts | 46 +++++++++++++++++++
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3 files changed, 58 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/qca7000-uart0-overlay.dts
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diff --git a/arch/arm/boot/dts/overlays/Makefile b/arch/arm/boot/dts/overlays/Makefile
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index fbcc3e35a747..44aedc149ff0 100644
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -157,6 +157,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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pwm-2chan.dtbo \
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pwm-ir-tx.dtbo \
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qca7000.dtbo \
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+ qca7000-uart0.dtbo \
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rotary-encoder.dtbo \
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rpi-backlight.dtbo \
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rpi-cirrus-wm5102.dtbo \
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diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
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index d50d694c9e77..ec769b2d6040 100644
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -2505,12 +2505,23 @@ Params: gpio_pin Output GPIO (default 18)
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Name: qca7000
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Info: in-tech's Evaluation Board for PLC Stamp micro
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+ This uses spi0 and a separate GPIO interrupt to connect the QCA7000.
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Load: dtoverlay=qca7000,<param>=<val>
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Params: int_pin GPIO pin for interrupt signal (default 23)
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speed SPI bus speed (default 12 MHz)
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+Name: qca7000-uart0
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+Info: in-tech's Evaluation Board for PLC Stamp micro (UART)
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+ This uses uart0/ttyAMA0 over GPIOs 14 & 15 to connect the QCA7000.
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+ But it requires disabling of onboard Bluetooth on
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+ Pi 3B, 3B+, 3A+, 4B and Zero W.
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+Load: dtoverlay=qca7000-uart0,<param>=<val>
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+Params: baudrate Set the baudrate for the UART (default
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+ "115200")
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+
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+
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Name: rotary-encoder
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Info: Overlay for GPIO connected rotary encoder.
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Load: dtoverlay=rotary-encoder,<param>=<val>
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diff --git a/arch/arm/boot/dts/overlays/qca7000-uart0-overlay.dts b/arch/arm/boot/dts/overlays/qca7000-uart0-overlay.dts
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new file mode 100644
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index 000000000000..5dee70853289
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/qca7000-uart0-overlay.dts
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@@ -0,0 +1,46 @@
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+// Overlay for the Qualcomm Atheros QCA7000 on PLC Stamp micro EVK
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+// Visit: https://in-tech-smartcharging.com/products/evaluation-tools/plc-stamp-micro-2-evaluation-board for details
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+
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2835";
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+
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+ fragment@0 {
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+ target = <&uart0>;
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+ __overlay__ {
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&uart0_pins>;
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+ status = "okay";
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+
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+ eth2: qca7000 {
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+ compatible = "qca,qca7000";
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+ current-speed = <115200>;
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+ };
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+ };
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+ };
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+
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+ fragment@1 {
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+ target = <&gpio>;
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+ __overlay__ {
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+ uart0_pins: uart0_pins {
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+ brcm,pins = <14 15>;
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+ brcm,function = <4>; /* alt0 */
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+ brcm,pull = <0 2>;
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+ };
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+ };
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+ };
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+
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+ fragment@2 {
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+ target-path = "/aliases";
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+ __overlay__ {
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+ serial0 = "/soc/serial@7e201000";
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+ serial1 = "/soc/serial@7e215040";
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+ };
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+ };
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+
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+ __overrides__ {
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+ baudrate = <ð2>, "current-speed:0";
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+ };
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+};
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--
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2.33.0
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