From a8d4d71c41ff0158c2026cac5981e39702167da9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Thu, 7 Apr 2016 21:25:10 +0200 Subject: brcm2708: update to latest version MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit As usual these patches were extracted from the raspberry pi repo: https://github.com/raspberrypi/linux/commits/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas --- ...162-DT-Add-overlays-to-configure-I2C-pins.patch | 134 +++++++++++++++++++++ 1 file changed, 134 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.4/0162-DT-Add-overlays-to-configure-I2C-pins.patch (limited to 'target/linux/brcm2708/patches-4.4/0162-DT-Add-overlays-to-configure-I2C-pins.patch') diff --git a/target/linux/brcm2708/patches-4.4/0162-DT-Add-overlays-to-configure-I2C-pins.patch b/target/linux/brcm2708/patches-4.4/0162-DT-Add-overlays-to-configure-I2C-pins.patch new file mode 100644 index 0000000000..fdd38383f2 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0162-DT-Add-overlays-to-configure-I2C-pins.patch @@ -0,0 +1,134 @@ +From 6014b99c7f39813c76b51e940677219c7dd41041 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <6by9@users.noreply.github.com> +Date: Mon, 8 Feb 2016 23:49:41 +0000 +Subject: [PATCH 162/232] DT: Add overlays to configure I2C pins + +Lifted from +https://www.raspberrypi.org/forums/viewtopic.php?f=107&t=120938&p=825883 +so not claiming this to be my own work. +Adds overlays i2c0-bcm2708 and i2c1-bcm2708 that allow the pin +allocations for i2c-0 and i2c-1 to be changed. +--- + arch/arm/boot/dts/overlays/Makefile | 2 ++ + arch/arm/boot/dts/overlays/README | 16 ++++++++++ + .../arm/boot/dts/overlays/i2c0-bcm2708-overlay.dts | 36 +++++++++++++++++++++ + .../arm/boot/dts/overlays/i2c1-bcm2708-overlay.dts | 37 ++++++++++++++++++++++ + 4 files changed, 91 insertions(+) + create mode 100644 arch/arm/boot/dts/overlays/i2c0-bcm2708-overlay.dts + create mode 100644 arch/arm/boot/dts/overlays/i2c1-bcm2708-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -29,6 +29,8 @@ dtb-$(RPI_DT_OVERLAYS) += hy28a-overlay. + dtb-$(RPI_DT_OVERLAYS) += hy28b-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += i2c-rtc-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += i2c-gpio-overlay.dtb ++dtb-$(RPI_DT_OVERLAYS) += i2c0-bcm2708-overlay.dtb ++dtb-$(RPI_DT_OVERLAYS) += i2c1-bcm2708-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += i2s-mmap-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += iqaudio-dac-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += iqaudio-dacplus-overlay.dtb +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -371,6 +371,22 @@ Params: ds1307 Select t + pcf8563 Select the PCF8563 device + + ++Name: i2c0-bcm2708 ++Info: Enable the i2c_bcm2708 driver for the i2c0 bus ++Load: dtoverlay=i2c0-bcm2708,= ++Params: sda0_pin GPIO pin for SDA0 (0, 28 [or 44] - default 0) ++ scl0_pin GPIO pin for SCL0 (1, 29 [or 45] - default 1) ++ ++ ++Name: i2c1-bcm2708 ++Info: Enable the i2c_bcm2708 driver for the i2c1 bus ++Load: dtoverlay=i2c1-bcm2708,= ++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) ++ ++ + Name: i2s-mmap + Info: Enables mmap support in the bcm2708-i2s driver + Load: dtoverlay=i2s-mmap +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/i2c0-bcm2708-overlay.dts +@@ -0,0 +1,36 @@ ++/* ++ * 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/; ++ ++/{ ++ compatible = "brcm,bcm2708"; ++ ++ fragment@0 { ++ target = <&i2c0>; ++ __overlay__ { ++ pinctrl-0 = <&i2c0_pins>; ++ status = "okay"; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&gpio>; ++ __overlay__ { ++ i2c0_pins: i2c0 { ++ brcm,pins = <0 1>; ++ brcm,function = <4>; /* alt0 */ ++ }; ++ }; ++ }; ++ ++ __overrides__ { ++ sda0_pin = <&i2c0_pins>,"brcm,pins:0"; ++ scl0_pin = <&i2c0_pins>,"brcm,pins:4"; ++ }; ++}; +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/i2c1-bcm2708-overlay.dts +@@ -0,0 +1,37 @@ ++/* ++ * 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/; ++ ++/{ ++ compatible = "brcm,bcm2708"; ++ ++ fragment@0 { ++ target = <&i2c1>; ++ __overlay__ { ++ pinctrl-0 = <&i2c1_pins>; ++ status = "okay"; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&gpio>; ++ __overlay__ { ++ i2c1_pins: i2c1 { ++ brcm,pins = <2 3>; ++ brcm,function = <4>; /* alt0 */ ++ }; ++ }; ++ }; ++ ++ __overrides__ { ++ sda1_pin = <&i2c1_pins>,"brcm,pins:0"; ++ scl1_pin = <&i2c1_pins>,"brcm,pins:4"; ++ pin_func = <&i2c1_pins>,"brcm,function:0"; ++ }; ++}; -- cgit v1.2.3