openwrt/target/linux/bcm27xx/patches-6.1/950-1185-overlays-ADS1115-allow-specification-of-the-i2c-bus.patch
Marty Jones 2e715fb4fc bcm27xx: update 6.1 patches to latest version
Add support for BCM2712 (Raspberry Pi 5).
3bb5880ab3
Patches were generated from the diff between linux kernel branch linux-6.1.y
and rpi-6.1.y from raspberry pi kernel source:
- git format-patch linux-6.1.y...rpi-6.1.y

Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
[Remove applied and reverted patches, squash patches and config commits]
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-01-25 17:46:45 +01:00

160 lines
4.3 KiB
Diff

From a477a6351575aa173f9f82857f5797e384fbc704 Mon Sep 17 00:00:00 2001
From: JinShil <slavo5150@yahoo.com>
Date: Tue, 28 Nov 2023 17:05:44 +0900
Subject: [PATCH] overlays: ADS1115: allow specification of the i2c bus
---
arch/arm/boot/dts/overlays/README | 10 +++
.../arm/boot/dts/overlays/ads1115-overlay.dts | 80 +++++++++++++------
2 files changed, 66 insertions(+), 24 deletions(-)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -489,6 +489,16 @@ Params: addr I2C bus
cha_gain Set the gain of the Programmable Gain
Amplifier for this channel. (Default 1 sets the
full scale of the channel to 4.096 Volts)
+ i2c0 Choose the I2C0 bus on GPIOs 0&1
+ i2c_csi_dsi Choose the I2C0 bus on GPIOs 44&45
+ i2c3 Choose the I2C3 bus (configure with the i2c3
+ overlay - BCM2711 only)
+ i2c4 Choose the I2C4 bus (configure with the i2c4
+ overlay - BCM2711 only)
+ i2c5 Choose the I2C5 bus (configure with the i2c5
+ overlay - BCM2711 only)
+ i2c6 Choose the I2C6 bus (configure with the i2c6
+ overlay - BCM2711 only)
Channel parameters can be set for each enabled channel.
A maximum of 4 channels can be enabled (letters a thru d).
--- a/arch/arm/boot/dts/overlays/ads1115-overlay.dts
+++ b/arch/arm/boot/dts/overlays/ads1115-overlay.dts
@@ -9,23 +9,6 @@
compatible = "brcm,bcm2835";
fragment@0 {
- target = <&i2c_arm>;
- __overlay__ {
- #address-cells = <1>;
- #size-cells = <0>;
- status = "okay";
-
- ads1115: ads1115@48 {
- compatible = "ti,ads1115";
- status = "okay";
- #address-cells = <1>;
- #size-cells = <0>;
- reg = <0x48>;
- };
- };
- };
-
- fragment@1 {
target = <&ads1115>;
__dormant__ {
#address-cells = <1>;
@@ -39,7 +22,7 @@
};
};
- fragment@2 {
+ fragment@1 {
target = <&ads1115>;
__dormant__ {
#address-cells = <1>;
@@ -53,7 +36,7 @@
};
};
- fragment@3 {
+ fragment@2 {
target = <&ads1115>;
__dormant__ {
#address-cells = <1>;
@@ -67,7 +50,7 @@
};
};
- fragment@4 {
+ fragment@3 {
target = <&ads1115>;
__dormant__ {
#address-cells = <1>;
@@ -81,23 +64,72 @@
};
};
+ fragment@4 {
+ target = <&i2cbus>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ ads1115: ads1115@48 {
+ compatible = "ti,ads1115";
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x48>;
+ };
+ };
+ };
+
+ frag100: fragment@100 {
+ target = <&i2c1>;
+ i2cbus: __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@101 {
+ target = <&i2c0if>;
+ __dormant__ {
+ status = "okay";
+ };
+ };
+
+ fragment@102 {
+ target = <&i2c0mux>;
+ __dormant__ {
+ status = "okay";
+ };
+ };
+
__overrides__ {
addr = <&ads1115>,"reg:0";
- cha_enable = <0>,"=1";
+ cha_enable = <0>,"=0";
cha_cfg = <&channel_a>,"reg:0";
cha_gain = <&channel_a>,"ti,gain:0";
cha_datarate = <&channel_a>,"ti,datarate:0";
- chb_enable = <0>,"=2";
+ chb_enable = <0>,"=1";
chb_cfg = <&channel_b>,"reg:0";
chb_gain = <&channel_b>,"ti,gain:0";
chb_datarate = <&channel_b>,"ti,datarate:0";
- chc_enable = <0>,"=3";
+ chc_enable = <0>,"=2";
chc_cfg = <&channel_c>,"reg:0";
chc_gain = <&channel_c>,"ti,gain:0";
chc_datarate = <&channel_c>,"ti,datarate:0";
- chd_enable = <0>,"=4";
+ chd_enable = <0>,"=3";
chd_cfg = <&channel_d>,"reg:0";
chd_gain = <&channel_d>,"ti,gain:0";
chd_datarate = <&channel_d>,"ti,datarate:0";
+ i2c0 = <&frag100>, "target:0=",<&i2c0>;
+ i2c_csi_dsi = <&frag100>, "target:0=",<&i2c_csi_dsi>,
+ <0>,"+101+102";
+ i2c3 = <&frag100>, "target?=0",
+ <&frag100>, "target-path=i2c3";
+ i2c4 = <&frag100>, "target?=0",
+ <&frag100>, "target-path=i2c4";
+ i2c5 = <&frag100>, "target?=0",
+ <&frag100>, "target-path=i2c5";
+ i2c6 = <&frag100>, "target?=0",
+ <&frag100>, "target-path=i2c6";
};
};