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

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>

diff --git a/arch/arm/dts/tegra124-nyan-big.dts b/arch/arm/dts/tegra124-nyan-big.dts
index 5a39e93..8be6adb 100644 (file)
--- a/arch/arm/dts/tegra124-nyan-big.dts
+++ b/arch/arm/dts/tegra124-nyan-big.dts
@@ -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>;

diff --git a/configs/nyan-big_defconfig b/configs/nyan-big_defconfig
index 92acab2..81949e8 100644 (file)
--- a/configs/nyan-big_defconfig
+++ b/configs/nyan-big_defconfig
@@ -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

diff --git a/include/configs/nyan-big.h b/include/configs/nyan-big.h
index a92112f..515704f 100644 (file)
--- a/include/configs/nyan-big.h
+++ b/include/configs/nyan-big.h
@@ -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"