From: Simon Glass <sjg@xxxxxxxxxxxx>
Peach Pit and Pi machines have 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: Simon Glass <sjg@xxxxxxxxxxxx>
Reviewed-by: Doug Anderson <dianders@xxxxxxxxxxxx>
[javier.martinez: Extend commit message]
Signed-off-by: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx>
---
arch/arm/boot/dts/exynos5420-peach-pit.dts | 26 ++++++++++++++++++++++++++
arch/arm/boot/dts/exynos5800-peach-pi.dts | 26 ++++++++++++++++++++++++++
2 files changed, 52 insertions(+)
diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts
index 9a050e1..e7c2a9f 100644
--- a/arch/arm/boot/dts/exynos5420-peach-pit.dts
+++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts
@@ -703,6 +703,13 @@
samsung,pin-drv = <2>;
};
+ spi_flash_cs: spi-flash-cs {
+ samsung,pins = "gpa2-5";
+ samsung,pin-function = <1>;
+ samsung,pin-pud = <0>;
+ samsung,pin-drv = <3>;
+ };
+
usb300_vbus_en: usb300-vbus-en {
samsung,pins = "gph0-0";
samsung,pin-function = <1>;
@@ -732,6 +739,25 @@
clock-names = "rtc", "rtc_src";
};
+&spi_1 {
+ status = "okay";
+ samsung,spi-src-clk = <0>;
+ num-cs = <1>;
+ cs-gpios = <&gpa2 5 0>;
+
+ spidev@0 {
+ compatible = "spidev";
+ reg = <0>;
+ spi-max-frequency = <50000000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi_flash_cs>;
+
+ controller-data {
+ samsung,spi-feedback-delay = <2>;
+ };
+ };
+};
+
&spi_2 {
status = "okay";
num-cs = <1>;
diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts
index e8fdda8..7a0a2a6 100644
--- a/arch/arm/boot/dts/exynos5800-peach-pi.dts
+++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts
@@ -691,6 +691,13 @@
samsung,pin-drv = <2>;
};
+ spi_flash_cs: spi-flash-cs {
+ samsung,pins = "gpa2-5";
+ samsung,pin-function = <1>;
+ samsung,pin-pud = <0>;
+ samsung,pin-drv = <3>;
+ };
+
usb300_vbus_en: usb300-vbus-en {
samsung,pins = "gph0-0";
samsung,pin-function = <1>;
@@ -720,6 +727,25 @@
clock-names = "rtc", "rtc_src";
};
+&spi_1 {
+ status = "okay";
+ samsung,spi-src-clk = <0>;
+ num-cs = <1>;
+ cs-gpios = <&gpa2 5 0>;
+
+ spidev@0 {
+ compatible = "spidev";
+ reg = <0>;
+ spi-max-frequency = <50000000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi_flash_cs>;
+
+ controller-data {
+ samsung,spi-feedback-delay = <2>;
+ };
+ };
+};
+
&spi_2 {
status = "okay";
num-cs = <1>;
--
2.1.0
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