This adds cros_ec to exynos5420-peach-pit and exynos5800-peach-pi,
including:
* The keyboard
* The i2c tunnel
* The tps65090 under the i2c tunnel
* The battery under the i2c tunnel
To add extra motivation, it should be noted that tps65090 is one of
the things needed to get display-related FETs turned on for pit and
pi.
Note that this relies on a few outstanding changes:
* Needs cros-ec-keyboard.dtsi in order to compile properly. See
(ARM: dts: Create a cros-ec-keyboard fragment) at
https://patchwork.kernel.org/patch/4297451/.
* Needs (mfd: cros_ec: spi: Fix end of transfer on devices with no
spi-msg-delay) from this series to work properly.
* Needs (spi: s3c64xx: fix broken cs_gpios usage in the driver) and
(spi: s3c64xx: for DT platofrms always get the chipselect info from
DT node) to work properly and match the documented bindings. See
https://patchwork.kernel.org/patch/4346701/ and
https://patchwork.kernel.org/patch/4346711/
Signed-off-by: Doug Anderson diand...@chromium.org
---
arch/arm/boot/dts/exynos5420-peach-pit.dts | 146 +
arch/arm/boot/dts/exynos5800-peach-pi.dts | 146 +
2 files changed, 292 insertions(+)
diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts
b/arch/arm/boot/dts/exynos5420-peach-pit.dts
index 1c5b8f9..67b7c32 100644
--- a/arch/arm/boot/dts/exynos5420-peach-pit.dts
+++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts
@@ -25,6 +25,11 @@
google,pit, google,peach,samsung,exynos5420,
samsung,exynos5;
+ aliases {
+ /* Assign 20 so we don't get confused w/ builtin ones */
+ i2c20 = /spi@12d4/cros-ec@0/i2c-tunnel;
+ };
+
memory {
reg = 0x2000 0x8000;
};
@@ -87,6 +92,13 @@
pinctrl-0 = usb301_vbus_en;
enable-active-high;
};
+
+ vbat: fixed-regulator {
+ compatible = regulator-fixed;
+ regulator-name = vbat-supply;
+ regulator-boot-on;
+ regulator-always-on;
+ };
};
pinctrl_0 {
@@ -111,6 +123,20 @@
samsung,pin-drv = 0;
};
+ ec_irq: ec-irq {
+ samsung,pins = gpx1-5;
+ samsung,pin-function = 0;
+ samsung,pin-pud = 0;
+ samsung,pin-drv = 0;
+ };
+
+ tps65090_irq: tps65090-irq {
+ samsung,pins = gpx2-5;
+ samsung,pin-function = 0;
+ samsung,pin-pud = 0;
+ samsung,pin-drv = 0;
+ };
+
hdmi_hpd_irq: hdmi-hpd-irq {
samsung,pins = gpx3-7;
samsung,pin-function = 0;
@@ -127,6 +153,19 @@
};
pinctrl_3 {
+ /* Drive SPI lines at x2 for better integrity */
+ spi2-bus {
+ samsung,pin-drv = 2;
+ };
+
+ /* Drive SPI chip select at x2 for better integrity */
+ ec_spi_cs: ec-spi-cs {
+ samsung,pins = gpb1-2;
+ samsung,pin-function = 1;
+ samsung,pin-pud = 0;
+ samsung,pin-drv = 2;
+ };
+
usb300_vbus_en: usb300-vbus-en {
samsung,pins = gph0-0;
samsung,pin-function = 1;
@@ -189,6 +228,111 @@
};
};
+spi_2 {
+ status = okay;
+ num-cs = 1;
+ samsung,spi-src-clk = 0;
+ cs-gpios = gpb1 2 0;
+
+ cros_ec: cros-ec@0 {
+ compatible = google,cros-ec-spi;
+ interrupt-parent = gpx1;
+ interrupts = 5 0;
+ pinctrl-names = default;
+ pinctrl-0 = ec_spi_cs ec_irq;
+ reg = 0;
+ spi-max-frequency = 3125000;
+
+ controller-data {
+ samsung,spi-feedback-delay = 1;
+ };
+
+ i2c-tunnel {
+ compatible = google,cros-ec-i2c-tunnel;
+ #address-cells = 1;
+ #size-cells = 0;
+ google,remote-bus = 0;
+
+ battery: sbs-battery@b {
+ compatible = sbs,sbs-battery;
+ reg = 0xb;
+ sbs,poll-retry-count = 1;
+ sbs,i2c-retry-count = 2;
+ };
+
+ power-regulator@48 {
+ compatible = ti,tps65090;
+ reg = 0x48;
+
+ /*
+* Config irq to disable internal pulls
+* even though we run in polling mode.
+*/
+ pinctrl-names = default;
+ pinctrl-0 = tps65090_irq;
+
+ vsys1-supply = vbat;
+ vsys2-supply = vbat;
+
