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dm: tegra: cros_ec: Enable Chrome OS EC on Nyan-big

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Enable the EC and keyboard, using the SPI bus.

The EC driver requires a particular format and a deactivation delay. Also
U-Boot does not support interrupts.

For now, adjust the device tree to comply. At some point we should tidy
this up to support interrupts and make tegra and exynos use the same setup.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Simon Glass 2015-06-05 14:39:34 -06:00 committed by Tom Warren
parent 635c2515c3
commit b3b9d7ca32
3 changed files with 10 additions and 0 deletions
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3
arch/arm/dts/tegra124-nyan-big.dts
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@ -163,12 +163,15 @@
spi@7000d400 {
status = "okay";
spi-deactivate-delay = <200>;
spi-max-frequency = <3000000>;
cros_ec: cros-ec@0 {
compatible = "google,cros-ec-spi";
spi-max-frequency = <3000000>;
interrupt-parent = <&gpio>;
interrupts = <TEGRA_GPIO(C, 7) IRQ_TYPE_LEVEL_LOW>;
ec-interrupt = <&gpio TEGRA_GPIO(C, 7) GPIO_ACTIVE_LOW>;
reg = <0>;
google,cros-ec-spi-msg-delay = <2000>;

5
configs/nyan-big_defconfig
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@ -6,3 +6,8 @@ CONFIG_DEFAULT_DEVICE_TREE="tegra124-nyan-big"
CONFIG_CMD_NET=y
CONFIG_DISPLAY_PORT=y
CONFIG_VIDEO_TEGRA124=y
CONFIG_DM_CROS_EC=y
CONFIG_CROS_EC=y
CONFIG_CROS_EC_SPI=y
CONFIG_CROS_EC_KEYB=y
CONFIG_CMD_CROS_EC=y

2
include/configs/nyan-big.h
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@ -79,6 +79,8 @@
#define CONFIG_FIT
#define CONFIG_OF_LIBFDT
#define CONFIG_KEYBOARD
#include "tegra-common-usb-gadget.h"
#include "tegra-common-post.h"