From: Doug Anderson <dianders@xxxxxxxxxxxx>
Exynos5250 Snow machine has a SPI flash memory that is used to store
firmware data and different system parameters.
Add a spidev node so the flash chip can be accessed by user-space tools.
Signed-off-by: Doug Anderson <dianders@xxxxxxxxxxxx>
Reviewed-by: Olof Johansson <olofj@xxxxxxxxxxxx>
[javier.martinez: Extend commit message]
Signed-off-by: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx>
---
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 f9bc04b..bb0e04e 100644
--- a/arch/arm/boot/dts/exynos5250-snow.dts
+++ b/arch/arm/boot/dts/exynos5250-snow.dts
@@ -554,6 +554,13 @@
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>;
@@ -622,6 +629,19 @@
status = "okay";
samsung,spi-src-clk = <0>;
num-cs = <1>;
+ cs-gpios = <&gpa2 5 0>;
+
+ spidev@0 {
+ compatible = "spidev";
+ reg = <0>;
+ spi-max-frequency = <10000000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi_cs>;
+
+ controller-data {
+ samsung,spi-feedback-delay = <2>;
+ };
+ };
};
&usbdrd_phy {
--
2.1.0
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