[RFC PATCH 3/4] ARM: dts: Add SPI flash node to exynos5250-snow

Javier Martinez Canillas
2015-05-19T13:34:13Z

From: Doug Anderson <dianders@chromium.org>

Exynos5250 Snow machine has a SPI flash memory that is used to
store firmware and different system parameters and data.

Add information about the SPI flash chip so that user-space tools
can access it.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Olof Johansson <olofj@chromium.org>
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
---
arch/arm/boot/dts/exynos5250-snow.dts | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts
index 1eca97ee4bd6..e9a2dbe2e0b9 100644
--- a/arch/arm/boot/dts/exynos5250-snow.dts
+++ b/arch/arm/boot/dts/exynos5250-snow.dts
@@ -615,6 +615,13 @@
samsung,pin-drv = <0>;
};

+ spi_cs: spi-cs {
+ samsung,pins = "gpa2-5";
+ samsung,pin-function = <1>;
+ samsung,pin-pud = <0>;
+ samsung,pin-drv = <3>;
+ };
+
tps65090_irq: tps65090-irq {
samsung,pins = "gpx2-6";
samsung,pin-function = <0>;
@@ -690,6 +697,19 @@
status = "okay";
samsung,spi-src-clk = <0>;
num-cs = <1>;
+ cs-gpios = <&gpa2 5 0>;
+
+ spidev@0 {
+ compatible = "google,spi-flash";
+ reg = <0>;
+ spi-max-frequency = <10000000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi_cs>;
+
+ controller-data {
+ samsung,spi-feedback-delay = <2>;
+ };
+ };
};

&usbdrd_dwc3 {
--
2.1.4