mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 00:11:13 +00:00
8299d1f057
Rebased RPi foundation patches on linux 5.10.59, removed applied and reverted patches, wireless patches and defconfig patches. bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 4B v1.1 4G bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
101 lines
3.2 KiB
Diff
101 lines
3.2 KiB
Diff
From 7f747c53fc4afa9a25eeb3ca290b4fed4690ca3f Mon Sep 17 00:00:00 2001
|
|
From: "Sunip K. Mukherjee" <sunipkmukherjee@gmail.com>
|
|
Date: Sun, 4 Jul 2021 16:03:07 -0400
|
|
Subject: [PATCH] overlays: Add overlay for Si446x Transceiver SPI
|
|
|
|
See: https://github.com/raspberrypi/linux/pull/4430
|
|
|
|
Signed-off-by: Sunip K. Mukherjee <sunipkmukherjee@gmail.com>
|
|
---
|
|
arch/arm/boot/dts/overlays/Makefile | 1 +
|
|
arch/arm/boot/dts/overlays/README | 10 ++++
|
|
.../boot/dts/overlays/si446x-spi0-overlay.dts | 53 +++++++++++++++++++
|
|
3 files changed, 64 insertions(+)
|
|
create mode 100644 arch/arm/boot/dts/overlays/si446x-spi0-overlay.dts
|
|
|
|
--- a/arch/arm/boot/dts/overlays/Makefile
|
|
+++ b/arch/arm/boot/dts/overlays/Makefile
|
|
@@ -176,6 +176,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
|
|
seeed-can-fd-hat-v1.dtbo \
|
|
seeed-can-fd-hat-v2.dtbo \
|
|
sh1106-spi.dtbo \
|
|
+ si446x-spi0.dtbo \
|
|
smi.dtbo \
|
|
smi-dev.dtbo \
|
|
smi-nand.dtbo \
|
|
--- a/arch/arm/boot/dts/overlays/README
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
|
@@ -2733,6 +2733,16 @@ Params: speed SPI bus
|
|
height Display height (32 or 64; default 64)
|
|
|
|
|
|
+Name: si446x-spi0
|
|
+Info: Overlay for Si446x UHF Transceiver via SPI using si446x driver.
|
|
+ The driver is currently out-of-tree at
|
|
+ https://github.com/sunipkmukherjee/silabs.git
|
|
+Load: dtoverlay=si446x-spi0,<param>=<val>
|
|
+Params: speed SPI bus speed (default 4000000)
|
|
+ int_pin GPIO pin for interrupts (default 17)
|
|
+ reset_pin GPIO pin for RESET (default 27)
|
|
+
|
|
+
|
|
Name: smi
|
|
Info: Enables the Secondary Memory Interface peripheral. Uses GPIOs 2-25!
|
|
Load: dtoverlay=smi
|
|
--- /dev/null
|
|
+++ b/arch/arm/boot/dts/overlays/si446x-spi0-overlay.dts
|
|
@@ -0,0 +1,53 @@
|
|
+// Overlay for the SiLabs Si446X Controller - SPI0
|
|
+// Default Interrupt Pin: 17
|
|
+// Default SDN Pin: 27
|
|
+/dts-v1/;
|
|
+/plugin/;
|
|
+
|
|
+ / {
|
|
+ compatible = "brcm,bcm2835";
|
|
+
|
|
+ fragment@0 {
|
|
+ target = <&spi0>;
|
|
+ __overlay__ {
|
|
+ // needed to avoid dtc warning
|
|
+ #address-cells = <1>;
|
|
+ #size-cells = <0>;
|
|
+
|
|
+ status = "okay";
|
|
+
|
|
+ uhf0: si446x@0{
|
|
+ compatible = "silabs,si446x";
|
|
+ reg = <0>; // CE0
|
|
+ pinctrl-names = "default";
|
|
+ pinctrl-0 = <&uhf0_pins>;
|
|
+ interrupt-parent = <&gpio>;
|
|
+ interrupts = <17 0x2>; // falling edge
|
|
+ spi-max-frequency = <4000000>;
|
|
+ sdn_pin = <27>;
|
|
+ irq_pin = <17>;
|
|
+ status = "okay";
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@1 {
|
|
+ target = <&gpio>;
|
|
+ __overlay__ {
|
|
+ uhf0_pins: uhf0_pins {
|
|
+ brcm,pins = <17 27>;
|
|
+ brcm,function = <0 1>; // in, out
|
|
+ brcm,pull = <2 0>; // high, none
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ __overrides__ {
|
|
+ int_pin = <&uhf0>, "interrupts:0",
|
|
+ <&uhf0>, "irq_pin:0",
|
|
+ <&uhf0_pins>, "brcm,pins:0";
|
|
+ reset_pin = <&uhf0>, "sdn_pin:0",
|
|
+ <&uhf0_pins>, "brcm,pins:4";
|
|
+ speed = <&uhf0>, "spi-max-frequency:0";
|
|
+ };
|
|
+};
|