Thread (4 messages) 4 messages, 3 authors, 2021-03-09

Re: [PATCH] arm64: dts: ti: k3-am642-evm: Add support for SPI EEPROM

From: Vignesh Raghavendra <vigneshr@ti.com>
Date: 2021-03-09 14:49:23
Also in: linux-devicetree, lkml


On 3/1/21 11:35 AM, Aswath Govindraju wrote:
Add pinmux details and device tree node for the EEPROM attached to SPI0
module in main domain.

Signed-off-by: Aswath Govindraju <redacted>
---
Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>

Regards
Vignesh
quoted hunk ↗ jump to hunk
This patch depends on,
https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210301055109.17626-3-a-govindraju@ti.com/

 arch/arm64/boot/dts/ti/k3-am642-evm.dts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index bfd849a29655..bc5bd7f896ab 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -139,6 +139,15 @@
 			AM64X_IOPAD(0x02a8, PIN_OUTPUT, 0) /* (E19) USB0_DRVVBUS */
 		>;
 	};
+
+	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_uart0 {
@@ -245,6 +254,19 @@
 	pinctrl-0 = <&main_usb0_pins_default>;
 };
 
+&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>;
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