arm64: dts: ti: k3-am642-evm: Add support for SPI EEPROM

Add pinmux details and device tree node for the EEPROM attached to SPI0
module in main domain.

Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20210309162315.22743-1-a-govindraju@ti.com

diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index 962ef80..25fa6fb 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -154,6 +154,15 @@
                >;
        };
 
+       main_spi0_pins_default: main-spi0-pins-default {
+               pinctrl-single,pins = <
+                       AM64X_IOPAD(0x0210, PIN_INPUT, 0) /* (D13) SPI0_CLK */
+                       AM64X_IOPAD(0x0208, PIN_OUTPUT, 0) /* (D12) SPI0_CS0 */
+                       AM64X_IOPAD(0x0214, PIN_OUTPUT, 0) /* (A13) SPI0_D0 */
+                       AM64X_IOPAD(0x0218, PIN_INPUT, 0) /* (A14) SPI0_D1 */
+               >;
+       };
+
        main_i2c1_pins_default: main-i2c1-pins-default {
                pinctrl-single,pins = <
                        AM64X_IOPAD(0x0268, PIN_INPUT_PULLUP, 0) /* (C18) I2C1_SCL */
@@ -295,6 +304,19 @@
        status = "disabled";
 };
 
+&main_spi0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_spi0_pins_default>;
+       ti,pindir-d0-out-d1-in = <1>;
+       eeprom@0 {
+               compatible = "microchip,93lc46b";
+               reg = <0>;
+               spi-max-frequency = <1000000>;
+               spi-cs-high;
+               data-size = <16>;
+       };
+};
+
 &sdhci0 {
        /* emmc */
        bus-width = <8>;