ARM: dts: am437x: cm-t43: add spi-flash support

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 <nikita@compulab.co.il>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Benoit Cousson <bcousson@baylibre.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Dmitry Lifshitz <lifshitz@compulab.co.il>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/am437x-cm-t43.dts b/arch/arm/boot/dts/am437x-cm-t43.dts
index 27b748a763d3b4d758df690fc08fce5c0b40d1b5..27e5948238676f0a7c4104de0fdb4ca316cbf7c0 100644 (file)
--- a/arch/arm/boot/dts/am437x-cm-t43.dts
+++ b/arch/arm/boot/dts/am437x-cm-t43.dts
@@ -44,6 +44,15 @@
                        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 +155,37 @@
        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";
 };