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difos/target/linux/bcm27xx/patches-4.19/950-0791-Add-universal-device-tree-overlay-for-SPI-devices.patch
Adrian Schmutzler 7d7aa2fd92 brcm2708: rename target to bcm27xx 
This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
2020-02-14 14:10:51 +01:00

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From 4d19be9132ca10cf582450a86dcb2c41f227f589 Mon Sep 17 00:00:00 2001
From: Ed Spiridonov <edo.rus@gmail.com>
Date: Tue, 10 Dec 2019 22:45:04 +0300
Subject: [PATCH] Add universal device tree overlay for SPI devices
Just specify the SPI address and device name ("compatible" property).
This overlay lacks any device-specific parameter support!
(some of them could be added later)
Examples:
1. SPI NOR flash on spi0.1, maximum SPI clock frequency 45MHz:
dtoverlay=anyspi:spi0-1,dev="jedec,spi-nor",speed=45000000
2. MCP3204 ADC on spi1.2, maximum SPI clock frequency 500kHz:
dtoverlay=anyspi:spi1-2,dev="microchip,mcp3204"
Signed-off-by: Ed Spiridonov <edo.rus@gmail.com>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 23 ++
arch/arm/boot/dts/overlays/anyspi-overlay.dts | 205 ++++++++++++++++++
3 files changed, 229 insertions(+)
create mode 100755 arch/arm/boot/dts/overlays/anyspi-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -15,6 +15,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
allo-katana-dac-audio.dtbo \
allo-piano-dac-pcm512x-audio.dtbo \
allo-piano-dac-plus-pcm512x-audio.dtbo \
+ anyspi.dtbo \
apds9960.dtbo \
applepi-dac.dtbo \
at86rf233.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -441,6 +441,29 @@ Params: 24db_digital_gain Allow ga
better voice quality. (default Off)
+Name: anyspi
+Info: Universal device tree overlay for SPI devices
+
+ Just specify the SPI address and device name ("compatible" property).
+ This overlay lacks any device-specific parameter support!
+
+ For devices on spi1 or spi2, the interfaces should be enabled
+ with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
+
+ Examples:
+ 1. SPI NOR flash on spi0.1, maximum SPI clock frequency 45MHz:
+ dtoverlay=anyspi:spi0-1,dev="jedec,spi-nor",speed=45000000
+ 2. MCP3204 ADC on spi1.2, maximum SPI clock frequency 500kHz:
+ dtoverlay=anyspi:spi1-2,dev="microchip,mcp3204"
+Load: dtoverlay=anyspi,<param>=<val>
+Params: spi<n>-<m> Configure device at spi<n>, cs<m>
+ (boolean, required)
+ dev Set device name to search compatible module
+ (string, required)
+ speed Set SPI clock frequency in Hz
+ (integer, optional, default 500000)
+
+
Name: apds9960
Info: Configures the AVAGO APDS9960 digital proximity, ambient light, RGB and
gesture sensor
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/anyspi-overlay.dts
@@ -0,0 +1,205 @@
+/*
+ * Universal device tree overlay for SPI devices
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835";
+
+ fragment@0 {
+ target = <&spidev0>;
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ fragment@1 {
+ target = <&spidev1>;
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ fragment@2 {
+ target-path = "spi1/spidev@0";
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ fragment@3 {
+ target-path = "spi1/spidev@1";
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ fragment@4 {
+ target-path = "spi1/spidev@2";
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ fragment@5 {
+ target-path = "spi2/spidev@0";
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ fragment@6 {
+ target-path = "spi2/spidev@1";
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ fragment@7 {
+ target-path = "spi2/spidev@2";
+ __dormant__ {
+ status = "disabled";
+ };
+ };
+
+ fragment@8 {
+ target = <&spi0>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ anyspi_00: anyspi@0 {
+ reg = <0>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ fragment@9 {
+ target = <&spi0>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ anyspi_01: anyspi@1 {
+ reg = <1>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ fragment@10 {
+ target = <&spi1>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ anyspi_10: anyspi@0 {
+ reg = <0>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ fragment@11 {
+ target = <&spi1>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ anyspi_11: anyspi@1 {
+ reg = <1>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ fragment@12 {
+ target = <&spi1>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ anyspi_12: anyspi@2 {
+ reg = <2>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ fragment@13 {
+ target = <&spi2>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ anyspi_20: anyspi@0 {
+ reg = <0>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ fragment@14 {
+ target = <&spi2>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ anyspi_21: anyspi@1 {
+ reg = <1>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ fragment@15 {
+ target = <&spi2>;
+ __dormant__ {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ anyspi_22: anyspi@2 {
+ reg = <2>;
+ spi-max-frequency = <500000>;
+ };
+ };
+ };
+
+ __overrides__ {
+ spi0-0 = <0>, "+0+8";
+ spi0-1 = <0>, "+1+9";
+ spi1-0 = <0>, "+2+10";
+ spi1-1 = <0>, "+3+11";
+ spi1-2 = <0>, "+4+12";
+ spi2-0 = <0>, "+5+13";
+ spi2-1 = <0>, "+6+14";
+ spi2-2 = <0>, "+7+15";
+ dev = <&anyspi_00>,"compatible",
+ <&anyspi_01>,"compatible",
+ <&anyspi_10>,"compatible",
+ <&anyspi_11>,"compatible",
+ <&anyspi_12>,"compatible",
+ <&anyspi_20>,"compatible",
+ <&anyspi_21>,"compatible",
+ <&anyspi_22>,"compatible";
+ speed = <&anyspi_00>, "spi-max-frequency:0",
+ <&anyspi_01>, "spi-max-frequency:0",
+ <&anyspi_10>, "spi-max-frequency:0",
+ <&anyspi_11>, "spi-max-frequency:0",
+ <&anyspi_12>, "spi-max-frequency:0",
+ <&anyspi_20>, "spi-max-frequency:0",
+ <&anyspi_21>, "spi-max-frequency:0",
+ <&anyspi_22>, "spi-max-frequency:0";
+ };
+};
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