mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 14:13:16 +00:00
195 lines
4.7 KiB
Diff
195 lines
4.7 KiB
Diff
From 114845b6010b6e6a320804f2d86ab4d5dc5a06de Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Mon, 5 Aug 2019 14:17:14 +0100
|
|
Subject: [PATCH 747/806] overlays: Add baudrate parameter to i2c3-i2c6
|
|
|
|
The overlays for enabling the new BCM2711 I2C interfaces were lacking
|
|
the means to configure the baud/clock rate.
|
|
|
|
Also explictly set the default pins, rather than relying on the values
|
|
in the base DTB.
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
arch/arm/boot/dts/overlays/README | 8 ++++++++
|
|
arch/arm/boot/dts/overlays/i2c3-overlay.dts | 15 ++++++++++++---
|
|
arch/arm/boot/dts/overlays/i2c4-overlay.dts | 15 ++++++++++++---
|
|
arch/arm/boot/dts/overlays/i2c5-overlay.dts | 15 ++++++++++++---
|
|
arch/arm/boot/dts/overlays/i2c6-overlay.dts | 15 ++++++++++++---
|
|
5 files changed, 56 insertions(+), 12 deletions(-)
|
|
|
|
--- a/arch/arm/boot/dts/overlays/README
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
|
@@ -1221,6 +1221,8 @@ Info: Enable the i2c3 bus
|
|
Load: dtoverlay=i2c3,<param>
|
|
Params: pins_2_3 Use GPIOs 2 and 3
|
|
pins_4_5 Use GPIOs 4 and 5 (default)
|
|
+ baudrate Set the baudrate for the interface (default
|
|
+ "100000")
|
|
|
|
|
|
Name: i2c4
|
|
@@ -1228,6 +1230,8 @@ Info: Enable the i2c4 bus
|
|
Load: dtoverlay=i2c4,<param>
|
|
Params: pins_6_7 Use GPIOs 6 and 7
|
|
pins_8_9 Use GPIOs 8 and 9 (default)
|
|
+ baudrate Set the baudrate for the interface (default
|
|
+ "100000")
|
|
|
|
|
|
Name: i2c5
|
|
@@ -1235,6 +1239,8 @@ Info: Enable the i2c5 bus
|
|
Load: dtoverlay=i2c5,<param>
|
|
Params: pins_10_11 Use GPIOs 10 and 11
|
|
pins_12_13 Use GPIOs 12 and 13 (default)
|
|
+ baudrate Set the baudrate for the interface (default
|
|
+ "100000")
|
|
|
|
|
|
Name: i2c6
|
|
@@ -1242,6 +1248,8 @@ Info: Enable the i2c6 bus
|
|
Load: dtoverlay=i2c6,<param>
|
|
Params: pins_0_1 Use GPIOs 0 and 1
|
|
pins_22_23 Use GPIOs 22 and 23 (default)
|
|
+ baudrate Set the baudrate for the interface (default
|
|
+ "100000")
|
|
|
|
|
|
Name: i2s-gpio28-31
|
|
--- a/arch/arm/boot/dts/overlays/i2c3-overlay.dts
|
|
+++ b/arch/arm/boot/dts/overlays/i2c3-overlay.dts
|
|
@@ -6,10 +6,11 @@
|
|
|
|
fragment@0 {
|
|
target = <&i2c3>;
|
|
- __overlay__ {
|
|
+ frag0: __overlay__ {
|
|
status = "okay";
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&i2c3_pins>;
|
|
+ clock-frequency = <100000>;
|
|
};
|
|
};
|
|
|
|
@@ -20,8 +21,16 @@
|
|
};
|
|
};
|
|
|
|
+ fragment@2 {
|
|
+ target = <&i2c3_pins>;
|
|
+ __overlay__ {
|
|
+ brcm,pins = <4 5>;
|
|
+ };
|
|
+ };
|
|
+
|
|
__overrides__ {
|
|
- pins_2_3 = <0>,"=1";
|
|
- pins_4_5 = <0>,"!1";
|
|
+ pins_2_3 = <0>,"=1!2";
|
|
+ pins_4_5 = <0>,"!1=2";
|
|
+ baudrate = <&frag0>, "clock-frequency:0";
|
|
};
|
|
};
|
|
--- a/arch/arm/boot/dts/overlays/i2c4-overlay.dts
|
|
+++ b/arch/arm/boot/dts/overlays/i2c4-overlay.dts
|
|
@@ -6,10 +6,11 @@
|
|
|
|
fragment@0 {
|
|
target = <&i2c4>;
|
|
- __overlay__ {
|
|
+ frag0: __overlay__ {
|
|
status = "okay";
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&i2c4_pins>;
|
|
+ clock-frequency = <100000>;
|
|
};
|
|
};
|
|
|
|
@@ -20,8 +21,16 @@
|
|
};
|
|
};
|
|
|
|
+ fragment@2 {
|
|
+ target = <&i2c4_pins>;
|
|
+ __overlay__ {
|
|
+ brcm,pins = <8 9>;
|
|
+ };
|
|
+ };
|
|
+
|
|
__overrides__ {
|
|
- pins_6_7 = <0>,"=1";
|
|
- pins_8_9 = <0>,"!1";
|
|
+ pins_6_7 = <0>,"=1!2";
|
|
+ pins_8_9 = <0>,"!1=2";
|
|
+ baudrate = <&frag0>, "clock-frequency:0";
|
|
};
|
|
};
|
|
--- a/arch/arm/boot/dts/overlays/i2c5-overlay.dts
|
|
+++ b/arch/arm/boot/dts/overlays/i2c5-overlay.dts
|
|
@@ -6,10 +6,11 @@
|
|
|
|
fragment@0 {
|
|
target = <&i2c5>;
|
|
- __overlay__ {
|
|
+ frag0: __overlay__ {
|
|
status = "okay";
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&i2c5_pins>;
|
|
+ clock-frequency = <100000>;
|
|
};
|
|
};
|
|
|
|
@@ -20,8 +21,16 @@
|
|
};
|
|
};
|
|
|
|
+ fragment@2 {
|
|
+ target = <&i2c5_pins>;
|
|
+ __overlay__ {
|
|
+ brcm,pins = <12 13>;
|
|
+ };
|
|
+ };
|
|
+
|
|
__overrides__ {
|
|
- pins_10_11 = <0>,"=1";
|
|
- pins_12_13 = <0>,"!1";
|
|
+ pins_10_11 = <0>,"=1!2";
|
|
+ pins_12_13 = <0>,"!1=2";
|
|
+ baudrate = <&frag0>, "clock-frequency:0";
|
|
};
|
|
};
|
|
--- a/arch/arm/boot/dts/overlays/i2c6-overlay.dts
|
|
+++ b/arch/arm/boot/dts/overlays/i2c6-overlay.dts
|
|
@@ -6,10 +6,11 @@
|
|
|
|
fragment@0 {
|
|
target = <&i2c6>;
|
|
- __overlay__ {
|
|
+ frag0: __overlay__ {
|
|
status = "okay";
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&i2c6_pins>;
|
|
+ clock-frequency = <100000>;
|
|
};
|
|
};
|
|
|
|
@@ -20,8 +21,16 @@
|
|
};
|
|
};
|
|
|
|
+ fragment@2 {
|
|
+ target = <&i2c6_pins>;
|
|
+ __overlay__ {
|
|
+ brcm,pins = <22 23>;
|
|
+ };
|
|
+ };
|
|
+
|
|
__overrides__ {
|
|
- pins_0_1 = <0>,"=1";
|
|
- pins_22_23 = <0>,"!1";
|
|
+ pins_0_1 = <0>,"=1!2";
|
|
+ pins_22_23 = <0>,"!1=2";
|
|
+ baudrate = <&frag0>, "clock-frequency:0";
|
|
};
|
|
};
|