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| author | David Lechner <david@lechnology.com> | 2017-05-15 18:21:23 -0500 |
|---|---|---|
| committer | Peter Korsgaard <peter@korsgaard.com> | 2017-05-16 22:55:37 +0200 |
| commit | da6d09788133bf10dccf6482ee812ff30060f86e (patch) | |
| tree | 80409d8259df22932afa9544fe3622fd06af3afe /board/lego/ev3/patches/linux/0001-adc-device-tree-node.patch | |
| parent | 09dfdd07c52c7b01f41635cd035b5743a8a40b21 (diff) | |
| download | buildroot-da6d09788133bf10dccf6482ee812ff30060f86e.tar.gz buildroot-da6d09788133bf10dccf6482ee812ff30060f86e.zip | |
lego: ev3: use mainline kernel
It is finally possible to boot LEGO MINDSTORMS EV3 from the mainline
Linux kernel. This patch updates the defconfg to use the mainline kernel
instead of the custom ev3dev kernel.
[Peter: lock kernel headers version]
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Diffstat (limited to 'board/lego/ev3/patches/linux/0001-adc-device-tree-node.patch')
| -rw-r--r-- | board/lego/ev3/patches/linux/0001-adc-device-tree-node.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/board/lego/ev3/patches/linux/0001-adc-device-tree-node.patch b/board/lego/ev3/patches/linux/0001-adc-device-tree-node.patch new file mode 100644 index 0000000000..dabda1e962 --- /dev/null +++ b/board/lego/ev3/patches/linux/0001-adc-device-tree-node.patch @@ -0,0 +1,56 @@ +From 8a81ff173c5c9a0ab1df84fab17971dbcce8490a Mon Sep 17 00:00:00 2001 +From: David Lechner <david@lechnology.com> +Date: Tue, 7 Feb 2017 13:22:07 -0600 +Subject: ARM: da850-lego-ev3: Add device tree node for A/DC + +This adds a node for the TI ADS7957 analog/digital converter on LEGO +MINDSTORMS EV3 as well as a regulator node that is used by the A/DC node. + +Signed-off-by: David Lechner <david@lechnology.com> +Signed-off-by: Sekhar Nori <nsekhar@ti.com> +--- + arch/arm/boot/dts/da850-lego-ev3.dts | 21 +++++++++++++++++++++ + 1 file changed, 21 insertions(+) + +diff --git a/arch/arm/boot/dts/da850-lego-ev3.dts b/arch/arm/boot/dts/da850-lego-ev3.dts +index 112ec92..0309537 100644 +--- a/arch/arm/boot/dts/da850-lego-ev3.dts ++++ b/arch/arm/boot/dts/da850-lego-ev3.dts +@@ -139,6 +139,19 @@ + enable-active-high; + regulator-boot-on; + }; ++ ++ /* ++ * This is a simple voltage divider on VCC5V to provide a 2.5V ++ * reference signal to the ADC. ++ */ ++ adc_ref: regulator2 { ++ compatible = "regulator-fixed"; ++ regulator-name = "adc ref"; ++ regulator-min-microvolt = <2500000>; ++ regulator-max-microvolt = <2500000>; ++ regulator-boot-on; ++ vin-supply = <&vcc5v>; ++ }; + }; + + &pmx_core { +@@ -293,6 +306,14 @@ + }; + }; + }; ++ ++ adc: adc@3 { ++ compatible = "ti,ads7957"; ++ reg = <3>; ++ #io-channel-cells = <1>; ++ spi-max-frequency = <10000000>; ++ vref-supply = <&adc_ref>; ++ }; + }; + + &gpio { +-- +cgit v1.1 + |
