CM-T43 has an on-board 2MB SPI-flash which stores U-Boot and the U-Boot
environment. Add it to the device tree.
Signed-off-by: Nikita Kiryanov <nik...@compulab.co.il>
Cc: Tony Lindgren <t...@atomide.com>
Cc: Igor Grinberg <grinb...@compulab.co.il>
Cc: Dmitry Lifshitz <lifsh...@compulab.co.il>
Cc: Ian Campbell <ijc+devicet...@hellion.org.uk>
---
arch/arm/boot/dts/am437x-cm-t43.dts | 41 +++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/arch/arm/boot/dts/am437x-cm-t43.dts
b/arch/arm/boot/dts/am437x-cm-t43.dts
index 7ef3971..0761383 100644
--- a/arch/arm/boot/dts/am437x-cm-t43.dts
+++ b/arch/arm/boot/dts/am437x-cm-t43.dts
@@ -44,6 +44,16 @@
AM4372_IOPAD(0x98c, PIN_INPUT_PULLUP | SLEWCTRL_FAST |
MUX_MODE0) /* i2c0_scl.i2c0_scl */
>;
};
+
+ spi0_pins: pinmux_spi0_pins {
+ pinctrl-single,pins = <
+ AM4372_IOPAD(0x950, PIN_INPUT | MUX_MODE0) /*
spi0_sclk.spi0_sclk */
+ AM4372_IOPAD(0x954, PIN_INPUT | MUX_MODE0) /*
spi0_d0.spi0_d0 */
+ AM4372_IOPAD(0x958, PIN_OUTPUT | MUX_MODE0) /*
spi0_d1.spi0_d1 */
+ AM4372_IOPAD(0x95C, PIN_OUTPUT | MUX_MODE0) /*
spi0_cs0.spi0_cs0 */
+ >;
+ };
+
};
&i2c0 {
@@ -146,6 +156,37 @@
status = "okay";
};
+&spi0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_pins>;
+ dmas = <&edma 16
+ &edma 17>;
+ dma-names = "tx0", "rx0";
+
+ flash: w25q64cvzpig@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <20000000>;
+ partition@0 {
+ label = "uboot";
+ reg = <0x0 0xc0000>;
+ };
+
+ partition@c0000 {
+ label = "uboot environment";
+ reg = <0xc0000 0x40000>;
+ };
+
+ partition@100000 {
+ label = "reserved";
+ reg = <0x100000 0x100000>;
+ };
+ };
+};
+
&uart0 {
status = "okay";
};
--
1.9.1
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