+++ /dev/null
-From 9c0f4b3e3b197d5c81f4bd6679f2c2456ab45c9e Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.org>
-Date: Wed, 17 Jul 2019 10:08:55 +0100
-Subject: [PATCH] overlays: Add i2c0 and i2c1 for regularity
-
-The new i2c overlays for pi4 (i2c3, i2c4, i2c5, i2c6) have a
-standardised interface that allows pin groups to be chosen
-atomically rather than as individual pins. Add i2c0 and i2c1
-overlays to fit the naming scheme and parameter usage, deprecating
-i2c0-bcm2708 and i2c1-bcm2708.
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.org>
----
- arch/arm/boot/dts/overlays/Makefile | 2 +
- arch/arm/boot/dts/overlays/README | 33 +++++---
- .../dts/overlays/i2c0-bcm2708-overlay.dts | 77 +++----------------
- arch/arm/boot/dts/overlays/i2c0-overlay.dts | 61 +++++++++++++++
- .../dts/overlays/i2c1-bcm2708-overlay.dts | 46 ++---------
- arch/arm/boot/dts/overlays/i2c1-overlay.dts | 44 +++++++++++
- 6 files changed, 147 insertions(+), 116 deletions(-)
- create mode 100644 arch/arm/boot/dts/overlays/i2c0-overlay.dts
- create mode 100644 arch/arm/boot/dts/overlays/i2c1-overlay.dts
-
---- a/arch/arm/boot/dts/overlays/Makefile
-+++ b/arch/arm/boot/dts/overlays/Makefile
-@@ -66,7 +66,9 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
- i2c-rtc.dtbo \
- i2c-rtc-gpio.dtbo \
- i2c-sensor.dtbo \
-+ i2c0.dtbo \
- i2c0-bcm2708.dtbo \
-+ i2c1.dtbo \
- i2c1-bcm2708.dtbo \
- i2c3.dtbo \
- i2c4.dtbo \
---- a/arch/arm/boot/dts/overlays/README
-+++ b/arch/arm/boot/dts/overlays/README
-@@ -1151,14 +1151,12 @@ Params: addr Set the
- sensor
-
-
--Name: i2c0-bcm2708
-+Name: i2c0
- Info: Change i2c0 pin usage. Not all pin combinations are usable on all
- platforms - platforms other then Compute Modules can only use this
- to disable transaction combining.
--Load: dtoverlay=i2c0-bcm2708,<param>=<val>
--Params: sda0_pin GPIO pin for SDA0 (deprecated - use pins_*)
-- scl0_pin GPIO pin for SCL0 (deprecated - use pins_*)
-- pins_0_1 Use pins 0 and 1 (default)
-+Load: dtoverlay=i2c0,<param>=<val>
-+Params: pins_0_1 Use pins 0 and 1 (default)
- pins_28_29 Use pins 28 and 29
- pins_44_45 Use pins 44 and 45
- pins_46_47 Use pins 46 and 47
-@@ -1166,18 +1164,33 @@ Params: sda0_pin GPIO pin
- "yes")
-
-
--Name: i2c1-bcm2708
-+Name: i2c0-bcm2708
-+Info: Deprecated, legacy version of i2c0, from which it inherits its
-+ parameters, just adding the explicit individual pin specifiers.
-+Load: <Deprecated>
-+Params: sda0_pin GPIO pin for SDA0 (deprecated - use pins_*)
-+ scl0_pin GPIO pin for SCL0 (deprecated - use pins_*)
-+
-+
-+Name: i2c1
- Info: Change i2c1 pin usage. Not all pin combinations are usable on all
- platforms - platforms other then Compute Modules can only use this
- to disable transaction combining.
--Info: Enable the i2c_bcm2708 driver for the i2c1 bus
--Load: dtoverlay=i2c1-bcm2708,<param>=<val>
-+Load: dtoverlay=i2c1,<param>=<val>
-+Params: pins_2_3 Use pins 2 and 3 (default)
-+ pins_44_45 Use pins 44 and 45
-+ combine Allow transactions to be combined (default
-+ "yes")
-+
-+
-+Name: i2c1-bcm2708
-+Info: Deprecated, legacy version of i2c1, from which it inherits its
-+ parameters, just adding the explicit individual pin specifiers.
-+Load: <Deprecated>
- Params: sda1_pin GPIO pin for SDA1 (2 or 44 - default 2)
- scl1_pin GPIO pin for SCL1 (3 or 45 - default 3)
- pin_func Alternative pin function (4 (alt0), 6 (alt2) -
- default 4)
-- combine Allow transactions to be combined (default
-- "yes")
-
-
- Name: i2c3
---- a/arch/arm/boot/dts/overlays/i2c0-bcm2708-overlay.dts
-+++ b/arch/arm/boot/dts/overlays/i2c0-bcm2708-overlay.dts
-@@ -1,69 +1,14 @@
--/*
-- * Device tree overlay for i2c_bcm2708, i2c0 bus
-- *
-- * Compile:
-- * dtc -@ -I dts -O dtb -o i2c0-bcm2708-overlay.dtb i2c0-bcm2708-overlay.dts
-- */
--
--/dts-v1/;
--/plugin/;
-+#include "i2c0-overlay.dts"
-
- /{
-- compatible = "brcm,bcm2835";
--
-- fragment@0 {
-- target = <&i2c0>;
-- __overlay__ {
-- status = "okay";
-- };
-- };
--
-- fragment@1 {
-- target = <&i2c0_pins>;
-- frag1: __overlay__ {
-- brcm,pins = <0 1>;
-- brcm,function = <4>; /* alt0 */
-- };
-- };
--
-- fragment@2 {
-- target = <&i2c0_pins>;
-- __dormant__ {
-- brcm,pins = <28 29>;
-- brcm,function = <4>; /* alt0 */
-- };
-- };
--
-- fragment@3 {
-- target = <&i2c0_pins>;
-- __dormant__ {
-- brcm,pins = <44 45>;
-- brcm,function = <5>; /* alt1 */
-- };
-- };
--
-- fragment@4 {
-- target = <&i2c0_pins>;
-- __dormant__ {
-- brcm,pins = <46 47>;
-- brcm,function = <4>; /* alt0 */
-- };
-- };
--
-- fragment@5 {
-- target = <&i2c0>;
-- __dormant__ {
-- compatible = "brcm,bcm2708-i2c";
-- };
-- };
--
-- __overrides__ {
-- sda0_pin = <&frag1>,"brcm,pins:0";
-- scl0_pin = <&frag1>,"brcm,pins:4";
-- pins_0_1 = <0>,"+1-2-3-4";
-- pins_28_29 = <0>,"-1+2-3-4";
-- pins_44_45 = <0>,"-1-2+3-4";
-- pins_46_47 = <0>,"-1-2-3+4";
-- combine = <0>, "!5";
-- };
-+ __overrides__ {
-+ sda0_pin = <&pins1>,"brcm,pins:0",
-+ <&pins2>,"brcm,pins:0",
-+ <&pins3>,"brcm,pins:0",
-+ <&pins4>,"brcm,pins:0";
-+ scl0_pin = <&pins1>,"brcm,pins:4",
-+ <&pins2>,"brcm,pins:4",
-+ <&pins3>,"brcm,pins:4",
-+ <&pins4>,"brcm,pins:4";
-+ };
- };
---- /dev/null
-+++ b/arch/arm/boot/dts/overlays/i2c0-overlay.dts
-@@ -0,0 +1,61 @@
-+/dts-v1/;
-+/plugin/;
-+
-+/{
-+ compatible = "brcm,bcm2835";
-+
-+ fragment@0 {
-+ target = <&i2c0>;
-+ __overlay__ {
-+ status = "okay";
-+ pinctrl-0 = <&i2c0_pins>;
-+ };
-+ };
-+
-+ fragment@1 {
-+ target = <&i2c0_pins>;
-+ pins1: __overlay__ {
-+ brcm,pins = <0 1>;
-+ brcm,function = <4>; /* alt0 */
-+ };
-+ };
-+
-+ fragment@2 {
-+ target = <&i2c0_pins>;
-+ pins2: __dormant__ {
-+ brcm,pins = <28 29>;
-+ brcm,function = <4>; /* alt0 */
-+ };
-+ };
-+
-+ fragment@3 {
-+ target = <&i2c0_pins>;
-+ pins3: __dormant__ {
-+ brcm,pins = <44 45>;
-+ brcm,function = <5>; /* alt1 */
-+ };
-+ };
-+
-+ fragment@4 {
-+ target = <&i2c0_pins>;
-+ pins4: __dormant__ {
-+ brcm,pins = <46 47>;
-+ brcm,function = <4>; /* alt0 */
-+ };
-+ };
-+
-+ fragment@5 {
-+ target = <&i2c0>;
-+ __dormant__ {
-+ compatible = "brcm,bcm2708-i2c";
-+ };
-+ };
-+
-+ __overrides__ {
-+ pins_0_1 = <0>,"+1-2-3-4";
-+ pins_28_29 = <0>,"-1+2-3-4";
-+ pins_44_45 = <0>,"-1-2+3-4";
-+ pins_46_47 = <0>,"-1-2-3+4";
-+ combine = <0>, "!5";
-+ };
-+};
---- a/arch/arm/boot/dts/overlays/i2c1-bcm2708-overlay.dts
-+++ b/arch/arm/boot/dts/overlays/i2c1-bcm2708-overlay.dts
-@@ -1,43 +1,9 @@
--/*
-- * Device tree overlay for i2c_bcm2708, i2c1 bus
-- *
-- * Compile:
-- * dtc -@ -I dts -O dtb -o i2c1-bcm2708-overlay.dtb i2c1-bcm2708-overlay.dts
-- */
--
--/dts-v1/;
--/plugin/;
-+#include "i2c1-overlay.dts"
-
- /{
-- compatible = "brcm,bcm2835";
--
-- fragment@0 {
-- target = <&i2c1>;
-- __overlay__ {
-- pinctrl-0 = <&i2c1_pins>;
-- status = "okay";
-- };
-- };
--
-- fragment@1 {
-- target = <&i2c1_pins>;
-- pins: __overlay__ {
-- brcm,pins = <2 3>;
-- brcm,function = <4>; /* alt 0 */
-- };
-- };
--
-- fragment@2 {
-- target = <&i2c1>;
-- __dormant__ {
-- compatible = "brcm,bcm2708-i2c";
-- };
-- };
--
-- __overrides__ {
-- sda1_pin = <&pins>,"brcm,pins:0";
-- scl1_pin = <&pins>,"brcm,pins:4";
-- pin_func = <&pins>,"brcm,function:0";
-- combine = <0>, "!2";
-- };
-+ __overrides__ {
-+ sda1_pin = <&pins1>,"brcm,pins:0", <&pins2>,"brcm,pins:0";
-+ scl1_pin = <&pins1>,"brcm,pins:4", <&pins1>,"brcm,pins:4";
-+ pin_func = <&pins1>,"brcm,function:0", <&pins2>,"brcm,function:0";
-+ };
- };
---- /dev/null
-+++ b/arch/arm/boot/dts/overlays/i2c1-overlay.dts
-@@ -0,0 +1,44 @@
-+/dts-v1/;
-+/plugin/;
-+
-+/{
-+ compatible = "brcm,bcm2835";
-+
-+ fragment@0 {
-+ target = <&i2c1>;
-+ __overlay__ {
-+ status = "okay";
-+ pinctrl-names = "default";
-+ pinctrl-0 = <&i2c1_pins>;
-+ };
-+ };
-+
-+ fragment@1 {
-+ target = <&i2c1_pins>;
-+ pins1: __overlay__ {
-+ brcm,pins = <2 3>;
-+ brcm,function = <4>; /* alt 0 */
-+ };
-+ };
-+
-+ fragment@2 {
-+ target = <&i2c1_pins>;
-+ pins2: __dormant__ {
-+ brcm,pins = <44 45>;
-+ brcm,function = <6>; /* alt 2 */
-+ };
-+ };
-+
-+ fragment@3 {
-+ target = <&i2c1>;
-+ __dormant__ {
-+ compatible = "brcm,bcm2708-i2c";
-+ };
-+ };
-+
-+ __overrides__ {
-+ pins_2_3 = <0>,"=1!2";
-+ pins_44_45 = <0>,"!1=2";
-+ combine = <0>, "!3";
-+ };
-+};
projects / openwrt / staging / dedeckeh.git / blobdiff